{"type": "FeatureCollection", "features": [{"id": "2011.03767", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:00Z", "type": "Journal Article", "created": "2020-09-01", "title": "Tree species effects on topsoil carbon stock and concentration are mediated by tree species type, mycorrhizal association, and N-fixing ability at the global scale", "description": "Open AccessSelection of appropriate tree species is an important forest management decision that may affect sequestration of carbon (C) in soil. However, information about tree species effects on soil C stocks at the global scale remains unclear. Here, we quantitatively synthesized 850 observations from field studies that were conducted in a common garden or monoculture plantations to assess how tree species type (broadleaf vs. conifer), mycorrhizal association (arbuscular mycorrhizal (AM) vs. ectomycorrhizal (ECM)), and N-fixing ability (N-fixing vs. non-N-fixing), directly and indirectly, affect topsoil (with a median depth of 10 cm) C concentration and stock, and how such effects were influenced by environmental factors such as geographical location and climate. We found that (1) tree species type, mycorrhizal association, and N-fixing ability were all important factors affecting soil C, with lower forest floor C stocks under broadleaved (44%), AM (39%), or N-fixing (28%) trees respectively, but higher mineral soil C concentration (11%, 22%, and 156%) and stock (9%, 10%, and 6%) under broadleaved, AM, and N-fixing trees respectively; (2) tree species type, mycorrhizal association, and N-fixing ability affected forest floor C stock and mineral soil C concentration and stock directly or indirectly through impacting soil properties such as microbial biomass C and nitrogen; (3) tree species effects on mineral soil C concentration and stock were mediated by latitude, MAT, MAP, and forest stand age. These results reveal how tree species and their specific traits influence forest floor C stock and mineral soil C concentration and stock at a global scale. Insights into the underlying mechanisms of tree species effects found in our study would be useful to inform tree species selection in forest management or afforestation aiming to sequester more atmospheric C in soil for mitigation of climate change.", "keywords": ["2. Zero hunger", "Linear mixed model", "Climate", "Soil property", "Global", "04 agricultural and veterinary sciences", "15. Life on land", "Quantitative Biology - Quantitative Methods", "Meta-analysis", "13. Climate action", "FOS: Biological sciences", "0401 agriculture", " forestry", " and fisheries", "Forest floor", "Mineral soil", "Quantitative Methods (q-bio.QM)"]}, "links": [{"href": "https://doi.org/2011.03767"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Forest%20Ecology%20and%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2011.03767", "name": "item", "description": "2011.03767", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2011.03767"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-12-01T00:00:00Z"}}, {"id": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/251365", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:00Z", "type": "Journal Article", "created": "2017-05-17", "title": "Global perturbation of organic carbon cycling by river damming", "description": "Abstract<p>The damming of rivers represents one of the most far-reaching human modifications of the flows of water and associated matter from land to sea. Dam reservoirs are hotspots of sediment accumulation, primary productivity (P) and carbon mineralization (R) along the river continuum. Here we show that for the period 1970\uffe2\uff80\uff932030, global carbon mineralization in reservoirs exceeds carbon fixation (P&lt;R); the global P/R ratio, however, varies significantly, from 0.20 to 0.58 because of the changing age distribution of dams. We further estimate that at the start of the twenty-first century, in-reservoir burial plus mineralization eliminated 4.0\uffc2\uffb10.9\uffe2\uff80\uff89Tmol per year (48\uffc2\uffb111 Tg C per year) or 13% of total organic carbon (OC) carried by rivers to the oceans. Because of the ongoing boom in dam building, in particular in emerging economies, this value could rise to 6.9\uffc2\uffb11.5\uffe2\uff80\uff89Tmol per year (83\uffc2\uffb118 Tg C per year) or 19% by 2030.</p", "keywords": ["Environnement et pollution", "13. Climate action", "Science", "Q", "Earth Sciences", "G\u00e9ochimie", "01 natural sciences", "Article", "6. Clean water", "Atmospheric Sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://escholarship.org/content/qt341579vd/qt341579vd.pdf"}, {"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/251365/3/doi_234992.pdf"}, {"href": "https://doi.org/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/251365"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Communications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/251365", "name": "item", "description": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/251365", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/251365"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-05-17T00:00:00Z"}}, {"id": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/273667", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:00Z", "type": "Journal Article", "created": "2017-09-11", "title": "CO2 evasion from boreal lakes: Revised estimate, drivers of spatial variability, and future projections", "description": "Abstract<p>Lakes (including reservoirs) are an important component of the global carbon (C) cycle, as acknowledged by the fifth assessment report of the IPCC. In the context of lakes, the boreal region is disproportionately important contributing to 27% of the worldwide lake area, despite representing just 14% of global land surface area. In this study, we used a statistical approach to derive a prediction equation\uffc2\uffa0for the partial pressure of CO2 (pCO2) in lakes as a function of lake area, terrestrial net primary productivity (NPP), and precipitation (r2\uffc2\uffa0=\uffc2\uffa0.56), and to create the first high\uffe2\uff80\uff90resolution, circumboreal map (0.5\uffc2\uffb0) of lake pCO2. The map of\uffc2\uffa0pCO2 was combined with lake area from the recently published GLOWABO database and three different estimates of the gas transfer velocity k to produce a resulting map of CO2 evasion (FCO2). For the boreal region, we estimate an average, lake area weighted, pCO2 of 966 (678\uffe2\uff80\uff931,325) \uffce\uffbcatm and a total\uffc2\uffa0FCO2 of 189 (74\uffe2\uff80\uff93347) Tg\uffc2\uffa0C\uffc2\uffa0year\uffe2\uff88\uff921, and evaluate the corresponding uncertainties based on Monte Carlo simulation. Our estimate of FCO2 is approximately twofold greater than previous estimates, as a result of methodological and data source differences. We use our results along with published estimates of the other C fluxes through inland waters to derive a C budget for the boreal region, and find that FCO2 from lakes is the most significant flux of the land\uffe2\uff80\uff90ocean aquatic continuum, and of a similar magnitude as emissions from forest fires. Using the model and applying it to spatially resolved projections of terrestrial NPP and precipitation while keeping everything else constant, we predict a 107% increase in boreal lake FCO2 under emission scenario RCP8.5 by 2100. Our projections are largely driven by increases in terrestrial NPP over the same period, showing the very close connection between the terrestrial and aquatic C cycle.</p", "keywords": ["0106 biological sciences", "Precipitation", "precipitation", "01 natural sciences", "Lake", "Environnement et pollution", "carbon budget", "Carbon budget", "Geovetenskap och relaterad milj\u00f6vetenskap", "terrestrial NPP", "boreal", "Climate change", "Boreal", "lake", "Ecosystem", "Future projections", "0105 earth and related environmental sciences", "Ecologie", "Arctic Regions", "Terrestrial NPP", "Carbon Dioxide", "Models", " Theoretical", "15. Life on land", "6. Clean water", "Carbon", "Lakes", "climate change", "13. Climate action", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "contr\u00f4le de la pollution", "CO2", "Technologie de l'environnement", "Earth and Related Environmental Sciences", "future projections", "Forecasting"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.13902"}, {"href": "https://doi.org/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/273667"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/273667", "name": "item", "description": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/273667", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/273667"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-10-16T00:00:00Z"}}, {"id": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/279784", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:00Z", "type": "Journal Article", "created": "2018-07-20", "title": "Global soil organic carbon removal by water erosion under climate change and land use change during AD\u20091850\u20132005", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. Erosion is an Earth system process that transports carbon laterally across the land surface and is currently accelerated by anthropogenic activities. Anthropogenic land cover change has accelerated soil erosion rates by rainfall and runoff substantially, mobilizing vast quantities of soil organic carbon (SOC) globally. At timescales of decennia to millennia this mobilized SOC can significantly alter previously estimated carbon emissions from land use change (LUC). However, a full understanding of the impact of erosion on land\u2013atmosphere carbon exchange is still missing. The aim of this study is to better constrain the terrestrial carbon fluxes by developing methods compatible with land surface models (LSMs) in order to explicitly represent the links between soil erosion by rainfall and runoff and carbon dynamics. For this we use an emulator that represents the carbon cycle of a LSM, in combination with the Revised Universal Soil Loss Equation (RUSLE) model. We applied this modeling framework at the global scale to evaluate the effects of potential soil erosion (soil removal only) in the presence of other perturbations of the carbon cycle: elevated atmospheric CO2, climate variability, and LUC. We find that over the period AD\u20091850\u20132005 acceleration of soil erosion leads to a total potential SOC removal flux of 74\u00b118\u2009Pg\u2009C, of which 79\u2009%\u201385\u2009% occurs on agricultural land and grassland. Using our best estimates for soil erosion we find that including soil erosion in the SOC-dynamics scheme results in an increase of 62\u2009% of the cumulative loss of SOC over 1850\u20132005 due to the combined effects of climate variability, increasing atmospheric CO2 and LUC. This additional erosional loss decreases the cumulative global carbon sink on land by 2\u2009Pg of carbon for this specific period, with the largest effects found for the tropics, where deforestation and agricultural expansion increased soil erosion rates significantly. We conclude that the potential effect of soil erosion on the global SOC stock is comparable to the effects of climate or LUC. It is thus necessary to include soil erosion in assessments of LUC and evaluations of the terrestrial carbon cycle.</p></article>", "keywords": ["[SDE] Environmental Sciences", "2. Zero hunger", "QE1-996.5", "550", "Ecologie", "G\u00e9ologie et min\u00e9ralogie", "Ecology", "0207 environmental engineering", "Geology", "02 engineering and technology", "Evolution des esp\u00e8ces", "15. Life on land", "01 natural sciences", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "Life", "13. Climate action", "QH501-531", "[SDE]Environmental Sciences", "14. Life underwater", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "QH540-549.5", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/279784/1/doi_263411.pdf"}, {"href": "https://doi.org/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/279784"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeosciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/279784", "name": "item", "description": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/279784", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/279784"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-07-20T00:00:00Z"}}, {"id": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/282703", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:00Z", "type": "Journal Article", "created": "2018-03-15", "title": "ORCHIDEE-SOM: modeling soil organic carbon (SOC) and dissolved organic carbon (DOC) dynamics along vertical soil profiles in Europe", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. Current land surface models (LSMs) typically represent soils in a\u00a0very simplistic way, assuming soil organic carbon (SOC) as a\u00a0bulk, and thus impeding a\u00a0correct representation of deep soil carbon dynamics. Moreover, LSMs generally neglect the production and export of dissolved organic carbon (DOC) from soils to rivers, leading to overestimations of the potential carbon sequestration on land. This common oversimplified processing of SOC in LSMs is partly responsible for the large uncertainty in the predictions of the soil carbon response to climate change. In this study, we present a\u00a0new soil carbon module called ORCHIDEE-SOM, embedded within the land surface model ORCHIDEE, which is able to reproduce the DOC and SOC dynamics in a\u00a0vertically discretized soil to 2\u202fm. The model includes processes of biological production and consumption of SOC and DOC, DOC adsorption on and desorption from soil minerals, diffusion of SOC and DOC, and DOC transport with water through and out of the soils to rivers. We evaluated ORCHIDEE-SOM against observations of DOC concentrations and SOC stocks from four European sites with different vegetation covers: a\u00a0coniferous forest, a\u00a0deciduous forest, a\u00a0grassland, and a\u00a0cropland. The model was able to reproduce the SOC stocks along their vertical profiles at the four sites and the DOC concentrations within the range of measurements, with the exception of the DOC concentrations in the upper soil horizon at the coniferous forest. However, the model was not able to fully capture the temporal dynamics of DOC concentrations. Further model improvements should focus on a\u00a0plant- and depth-dependent parameterization of the new input model parameters, such as the turnover times of DOC and the microbial carbon use efficiency. We suggest that this new soil module, when parameterized for global simulations, will improve the representation of the global carbon cycle in LSMs, thus helping to constrain the predictions of the future SOC response to global warming.</p></article>", "keywords": ["550", "/dk/atira/pure/core/keywords/nachhaltigkeitswissenschaft; name=Sustainability Science", "Climate", "/dk/atira/pure/discipline/B000/B006/B410-bodembeheer", "01 natural sciences", "/dk/atira/pure/thematic/inbo_th_00043", "/dk/atira/pure/thematic/inbo_th_00022", "SDG 13 - Climate Action", "/dk/atira/pure/sustainabledevelopmentgoals/climate_action; name=SDG 13 - Climate Action", "/dk/atira/pure/subjectarea/asjc/2600/2611; name=Modelling and Simulation", "0105 earth and related environmental sciences", "2. Zero hunger", "[SDU.OCEAN]Sciences of the Universe [physics]/Ocean", "Woods and parks", "QE1-996.5", "Atmosphere", "[SDU.OCEAN] Sciences of the Universe [physics]/Ocean", " Atmosphere", "Physics", "/dk/atira/pure/sustainabledevelopmentgoals/life_on_land; name=SDG 15 - Life on Land", "Geology", "Geokemi", "04 agricultural and veterinary sciences", "15. Life on land", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "Sciences de la terre et du cosmos", "Geochemistry", "/dk/atira/pure/subjectarea/asjc/1900; name=Earth and Planetary Sciences(all)", "13. Climate action", "8. Economic growth", "0401 agriculture", " forestry", " and fisheries", "[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces", "environment", "B410-soil-science"]}, "links": [{"href": "https://gmd.copernicus.org/articles/11/937/2018/gmd-11-937-2018.pdf"}, {"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/282703/1/doi_266330.pdf"}, {"href": "https://doi.org/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/282703"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoscientific%20Model%20Development", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/282703", "name": "item", "description": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/282703", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/282703"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-11-16T00:00:00Z"}}, {"id": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/292778", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:01Z", "type": "Journal Article", "created": "2019-08-12", "title": "ORCHIDEE MICT-LEAK (r5459), a global model for the production, transport, and transformation of dissolved organic carbon from Arctic permafrost regions \u2013 Part 1: Rationale, model description, and simulation protocol", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. Few Earth system models adequately represent the unique permafrost soil biogeochemistry and its respective processes; this significantly contributes to uncertainty in estimating their responses, and that of the planet at large, to warming. Likewise, the riverine component of what is known as the \u201cboundless carbon cycle\u201d is seldom recognised in Earth system modelling. The hydrological mobilisation of organic material from a \u223c1330\u20131580\u2009PgC carbon stock to the river network results in either sedimentary settling or atmospheric \u201cevasion\u201d, processes widely expected to increase with amplified Arctic climate warming. Here, the production, transport, and atmospheric release of dissolved organic carbon (DOC) from high-latitude permafrost soils into inland waters and the ocean are explicitly represented for the first time in the land surface component (ORCHIDEE) of a CMIP6 global climate model (Institut Pierre Simon Laplace \u2013 IPSL). The model, ORCHIDEE MICT-LEAK, which represents the merger of previously described ORCHIDEE versions MICT and LEAK, mechanistically represents (a)\u00a0vegetation and soil physical processes for high-latitude snow, ice, and soil phenomena and (b)\u00a0the cycling of DOC and CO2, including atmospheric evasion, along the terrestrial\u2013aquatic continuum from soils through the river network to the coast at 0.5 to 2\u2218 resolution. This paper, the first in a two-part study, presents the rationale for including these processes in a high-latitude-specific land surface model, then describes the model with a focus on novel process implementations, followed by a summary of the model configuration and simulation protocol. The results of these simulation runs, conducted for the Lena River basin, are evaluated against observational data in the second part of this study.</p></article>", "keywords": ["QE1-996.5", "550", "Geology", "15. Life on land", "551", "01 natural sciences", "6. Clean water", "Sciences de la terre et du cosmos", "[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "13. Climate action", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology", "Sciences pharmaceutiques", "[SDU.STU.GL] Sciences of the Universe [physics]/Earth Sciences/Glaciology", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/292778/1/doi_276405.pdf"}, {"href": "https://doi.org/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/292778"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoscientific%20Model%20Development", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/292778", "name": "item", "description": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/292778", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/292778"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-03-25T00:00:00Z"}}, {"id": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/315237", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:01Z", "type": "Journal Article", "created": "2020-08-21", "title": "How Simulations of the Land Carbon Sink Are Biased by Ignoring Fluvial Carbon Transfers: A Case Study for the Amazon Basin", "description": "Summary   Land-surface models are important tools for simulation of the past, present, and future capacity of terrestrial ecosystems to absorb anthropogenic CO2 emissions. However, fluvial carbon (C) transfers are presently neglected in these models. Using the Amazon basin as a case study, we show that this negligence leads to significant underestimation of the net uptake of atmospheric C while terrestrial C storage changes are overestimated. These biases arise from the fact that C\u2014in reality, leached from soils and exported through the river network\u2014is instead represented as partly being respired and partly being stored in soils. Moreover, these biases scale mainly to the fluvial C export to the coast, despite aquatic CO2 emission to the atmosphere being the major pathway of riverine C exports. We further show that fluvial C transfers may change significantly in response to changes in either hydrology or in atmospheric C uptake by vegetation.", "keywords": ["[SDE] Environmental Sciences", "NEE", "550", "0207 environmental engineering", "G\u00e9n\u00e9ralit\u00e9s", "02 engineering and technology", "910", "15. Life on land", "01 natural sciences", "rivers", "land-surface modeling", "13. Climate action", "[SDE]Environmental Sciences", "carbon cycle", "NBP", "Amazon river", "fluvial carbon fluxes", "land carbon sink", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/315237/1/doi_298881.pdf"}, {"href": "https://doi.org/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/315237"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/One%20Earth", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/315237", "name": "item", "description": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/315237", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/315237"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-08-01T00:00:00Z"}}, {"id": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/321210", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:01Z", "type": "Journal Article", "created": "2021-03-01", "title": "Source apportionment of methane escaping the subsea permafrost system in the outer Eurasian Arctic Shelf", "description": "Significance           <p>Extensive release of methane from sediments of the world\uffe2\uff80\uff99s largest continental shelf, the East Siberian Arctic Ocean (ESAO), is one of the few Earth system processes that can cause a net transfer of carbon from land/ocean to the atmosphere and thus amplify global warming on the timescale of this century. An important gap in our current knowledge concerns the contributions of different subsea pools to the observed methane releases. This knowledge is a prerequisite to robust predictions on how these releases will develop in the future. Triple-isotope\uffe2\uff80\uff93based fingerprinting of the origin of the highly elevated ESAO methane levels points to a limited contribution from shallow microbial sources and instead a dominating contribution from a deep thermogenic pool.</p", "keywords": ["Carbon cycle/climate change", "G\u00e9n\u00e9ralit\u00e9s", "15. Life on land", "01 natural sciences", "Isotopes/radiocarbon", "3. Good health", "Subsea permafrost", "Arctic", "13. Climate action", "Physical Sciences", "14. Life underwater", "Methane", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://pnas.org/doi/pdf/10.1073/pnas.2019672118"}, {"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/321210/1/doi_304854.pdf"}, {"href": "https://doi.org/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/321210"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20National%20Academy%20of%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/321210", "name": "item", "description": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/321210", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/321210"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-03-01T00:00:00Z"}}, {"id": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/333899", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:01Z", "type": "Journal Article", "created": "2017-07-19", "title": "Application of Mycorrhiza and Soil from a Permaculture System Improved Phosphorus Acquisition in Naranjilla", "description": "Naranjilla (Solanum quitoense) is a perennial shrub plant mainly cultivated in Ecuador, Colombia, and Central America where it represents an important cash crop. Current cultivation practices not only cause deforestation and large-scale soil degradation but also make plants highly susceptible to pests and diseases. The use of arbuscular mycorrhizal fungi (AMF) can offer a possibility to overcome these problems. AMF can act beneficially in various ways, for example by improving plant nutrition and growth, water relations, soil structure and stability and protection against biotic and abiotic stresses. In this study, the impact of AMF inoculation on growth and nutrition parameters of naranjilla has been assessed. For inoculation three European reference AMF strains (Rhizoglomus irregulare, Claroideoglomus claroideum, and Cetraspora helvetica) and soils originating from three differently managed naranjilla plantations in Ecuador (conventional, organic, and permaculture) have been used. This allowed for a comparison of the performance of exotic AMF strains (reference strains) versus native consortia contained in the three soils used as inocula. To study fungal communities present in the three soils, trap cultures have been established using naranjilla as host plant. The community structures of AMF and other fungi inhabiting the roots of trap cultured naranjilla were assessed using next generation sequencing (NGS) methods. The growth response experiment has shown that two of the three reference AMF strains, a mixture of the three and soil from a permaculture site led to significantly better acquisition of phosphorus (up to 104%) compared to uninoculated controls. These results suggest that the use of AMF strains and local soils as inoculants represent a valid approach to improve nutrient uptake efficiency of naranjilla and consequently to reduce inputs of mineral fertilizers in the cultivation process. Improved phosphorus acquisition after inoculation with permaculture soil might have been caused by a higher abundance of AMF and the presence of Piriformospora indica as revealed by NGS. A higher frequency of AMF and enhanced root colonization rates in the trap cultures supplemented with permaculture soil highlight the importance of diverse agricultural systems for soil quality and crop production.", "keywords": ["next generation sequencing", "0301 basic medicine", "2. Zero hunger", "permaculture", "0303 health sciences", "Piriformospora indica", "Plant culture", "naranjilla", "arbuscular mycorrhizal fungi", "Plant Science", "15. Life on land", "fungal communities", "Life sciences", "SB1-1110", "Biologie v\u00e9g\u00e9tale (sciences v\u00e9g\u00e9tales", " sylviculture", " mycologie...)", "03 medical and health sciences", "Sciences du vivant", "naranjilla", " arbuscular mycorrhizal fungi", " fungal communities", " Piriformospora indica", " farming practices", " permaculture", " next generation sequencing", "farming practices", "Phytobiology (plant sciences", " forestry", " mycology...)", "Sciences exactes et naturelles"]}, "links": [{"href": "https://orbi.uliege.be/bitstream/2268/290284/1/Symanczik%20et%20al%202017.pdf"}, {"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/333899/1/doi_317543.pdf"}, {"href": "https://doi.org/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/333899"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Frontiers%20in%20Plant%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/333899", "name": "item", "description": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/333899", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/333899"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-07-19T00:00:00Z"}}, {"id": "2034733356", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:01Z", "type": "Journal Article", "created": "2015-04-27", "title": "Application of smoothed particle hydrodynamics (SPH) and pore morphologic model to predict saturated water conductivity from X-ray CT imaging in a silty loam Cambisol", "description": "20 This study aims to estimate saturated hydraulic conductivity in a silty loam soil and compare modelled data with 21 experimental ones. The flow characteristics of twelve undisturbed soil cores (5 cm in diameter \u00d7 6 cm high) were 22 measured in the laboratory after performing X-ray computed microtomography (microCT) analysis. MicroCT 3D 23 imaging was integrated with an existing pore morphologic model and a numerical simulation based on mesh-24 free smoothed particle hydrodynamics (SPH) to calculate the water flow through the macropore network 25 (pores N 40 \u03bcm). Results showed that the proposed SPH method was able to predict hydraulic conductivity of 26 large-sized samples as falling in the range of the experimental ones. By contrast the morphologic model generally 27 underestimated the water flow and was slightly affected by the pore shape. Increasing microCT imaging resolu-28 tion and expanding the variability with other soil types will improve the understanding of the role of micropore 29 size and morphology on water conductivity. 30", "keywords": ["2. Zero hunger", "550", "[ SDV.SA.SDS ] Life Sciences [q-bio]/Agricultural sciences/Soil study", "0207 environmental engineering", "600", "04 agricultural and veterinary sciences", "02 engineering and technology", "Pore size distribution", "[ SDE.IE ] Environmental Sciences/Environmental Engineering", "Saturated hydraulic conductivity", "Soil structure", "0401 agriculture", " forestry", " and fisheries", "[ SDU.STU.HY ] Sciences of the Universe [physics]/Earth Sciences/Hydrology", "X-ray computed microtomography"]}, "links": [{"href": "https://doi.org/2034733356"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoderma", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2034733356", "name": "item", "description": "2034733356", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2034733356"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-10-01T00:00:00Z"}}, {"id": "2078.1/300502", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2025-04-01", "title": "Lengthening of biogeochemical processes during winter in degraded permafrost soils", "description": "The consequences of permafrost thaw for organic carbon release are mainly studied in summer, considering the frozen soil is inert in winter. Here, we show that biogeochemical processes also occur during early winter. We combine Si isotopes and Ge/Si with Fe and dissolved organic carbon (DOC) concentrations in soil porewater along a natural gradient of permafrost degradation (palsa, intermediate and degraded palsa sites) and in river water (Stordalen, Sweden) collected during late autumn and early winter. The data support: (i) the occurrence of early winter snowmelt water infiltration in soils diluting more extensively the soil porewater in dry well-drained palsa soils; (ii) the decrease of the redox potential (by 30 %) induced by snowmelt water infiltration and water table rise at the intermediate site, favouring Fe-oxides dissolution and the release of the associated DOC in soil porewater; (iii) the contribution of snowmelt water infiltration to the Fe and DOC lateral export from permafrost degrading soils to rivers.", "keywords": ["Ekologi", "Geochemistry", "Ecology", "Geokemi", "Milj\u00f6vetenskap", "Environmental Sciences"]}, "links": [{"href": "https://doi.org/2078.1/300502"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geochemical%20Perspectives%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/300502", "name": "item", "description": "2078.1/300502", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/300502"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2025-04-01T00:00:00Z"}}, {"id": "2066/37870", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:01Z", "type": "Report", "title": "Fiscale faciliteiten voor 'goede doelen'. Nieuwe regels", "description": "Item does not contain fulltext", "keywords": ["Centre for Notarial Law", "Centrum voor Notarieel Recht"], "contacts": [{"organization": "Geld, L.A.G.M. van der", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/2066/37870"}, {"rel": "self", "type": "application/geo+json", "title": "2066/37870", "name": "item", "description": "2066/37870", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2066/37870"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-01-01T00:00:00Z"}}, {"id": "20714903", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:01Z", "type": "Journal Article", "created": "2010-08-16", "title": "Infiltration of plasma rich in growth factors for osteoarthritis of the knee short-term effects on function and quality of life", "description": "Osteoarthritis (OA) is a highly prevalent, chronic, degenerative condition that generates a high expense. Alternative and co-adjuvant therapies to improve the quality of life and physical function of affected patients are currently being sought.A total of 808 patients with knee pathology were treated with PRGF (plasma rich in growth factors), 312 of them with OA of the knee (Outerbridge grades I-IV) and symptoms of >3\u00a0months duration met the inclusion criteria and were evaluated to obtain a sample of 261 patients, 109 women and 152 men, with an average age of 48.39. Three intra-articular injections of autologous PRGF were administered at 2-week intervals in outpatient surgery. The process of obtaining PRGF was carried out following the Anitua Technique. Participants were asked to fill out a questionnaire with personal data and the following assessment instruments: VAS, SF-36, WOMAC Index and Lequesne Index before the first infiltration of PRGF and 6\u00a0months after the last infiltration.Statistically significant differences (P\u00a0<\u00a00.0001) between pre-treatment and follow-up values were found for pain, stiffness and functional capacity in the WOMAC Index; pain and total score, distance and daily life activities in the Lequesne Index; the VAS pain score; and the SF-36 physical health domain. There were no adverse effects related to PRGF infiltration.At 6\u00a0months following intra-articular infiltration of PRGF in patients with OA of the knee, improvements in function and quality of life were documented by OA-specific and general clinical assessment instruments. These favourable findings point to consider PRGF as a therapy for OA.", "keywords": ["Male", "Platelet-Derived Growth Factor", "Platelet-Rich Plasma", "Recovery of Function", "Middle Aged", "Osteoarthritis", " Knee", "Magnetic Resonance Imaging", "Statistics", " Nonparametric", "Injections", " Intra-Articular", "3. Good health", "03 medical and health sciences", "0302 clinical medicine", "Surveys and Questionnaires", "Quality of Life", "Humans", "Female", "Longitudinal Studies", "Prospective Studies"]}, "links": [{"href": "https://doi.org/20714903"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Archives%20of%20Orthopaedic%20and%20Trauma%20Surgery", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "20714903", "name": "item", "description": "20714903", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/20714903"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-08-17T00:00:00Z"}}, {"id": "2078.1/225292", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2019-06-24", "title": "Mobilization of aged and biolabile soil carbon by tropical deforestation", "description": "In the mostly pristine Congo Basin, agricultural land-use change has intensified in recent years. One potential and understudied consequence of this deforestation and conversion to agriculture is the mobilization and loss of organic matter from soils to rivers as dissolved organic matter. Here, we quantify and characterize dissolved organic matter sampled from 19 catchments of varying deforestation extent near Lake Kivu over a two-week period during the wet season. Dissolved organic carbon from deforested, agriculturally-dominated catchments was older (14C age: ~1.5kyr) and more biolabile than from pristine forest catchments. Ultrahigh-resolution mass spectrometry revealed that this aged organic matter from deforested catchments was energy-rich and chemodiverse, with higher proportions of nitrogen- and sulfur-containing formulae. Given the molecular composition and biolability, we suggest that organic matter from deforested landscapes is preferentially respired upon disturbance, resulting in elevated in-stream concentrations of carbon dioxide. We estimate that while deforestation reduces the overall flux of dissolved organic carbon by ~56%, it does not significantly change the yield of biolabile dissolved organic carbon. Ultimately, the exposure of deeper soil horizons through deforestation and agricultural expansion releases old, previously stable, and biolabile soil organic carbon into the modern carbon cycle via the aquatic pathway.", "keywords": ["2. Zero hunger", "Life on Land", "04 agricultural and veterinary sciences", "15. Life on land", "dissolved organic carbon", "01 natural sciences", "Article", "6. Clean water", "soil organic carbon", "Congo", "13. Climate action", "deforestation", "Meteorology & Atmospheric Sciences", "0401 agriculture", " forestry", " and fisheries", "agriculture", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://www.nature.com/articles/s41561-019-0384-9.pdf"}, {"href": "https://escholarship.org/content/qt45n6x8tn/qt45n6x8tn.pdf"}, {"href": "https://doi.org/2078.1/225292"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Geoscience", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/225292", "name": "item", "description": "2078.1/225292", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/225292"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-24T00:00:00Z"}}, {"id": "2078.1/246033", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2021-04-27", "title": "Imprint of chemical weathering and hydrothermalism on the Ge/Si ratio and Si isotope composition of rivers in a volcanic tropical island, Basse-Terre, Guadeloupe (French West Indies)", "description": "Abstract   A significant portion of the disproportionally high chemical weathering flux in volcanic island arcs may originate from hydrothermal fluid-rock interaction, thereby compromising the accurate estimate of atmospheric CO2 consumption rates. The objective of this study is to evaluate how the riverine Ge/Si ratio and Si isotopes, two well-established tracers of weathering, respond to hydrothermal inputs. The work took place in Basse-Terre, Guadeloupe, a tropical volcanic island with a dense river network, high chemical weathering fluxes and various hydrothermal surface manifestations. We characterized the Ge/Si ratio and \u03b430Si of 15 thermal springs, nine non-impacted (NI) rivers and 13 hydrothermally-impacted (HI) rivers. The soil solution from a highly weathered soil profile (Ferralsol) and a clayey-rock corresponding to the material exposed in an extinct hydrothermal system were also measured. A new purification method was successfully developed in order to allow the reliable measurement of Si isotopes in SO42\u2212- and Cl\u2212-rich thermal spring and HI river waters by mass spectrometry. Basse-Terre's thermal springs have variable Ge/Si ratios (0.05\u201321.03\u00a0\u03bcmol.mol\u22121) and \u03b430Si (0.71\u20131.50\u2030), but with no apparent relationship to the water compositional type. The Ge/Si ratio (0.15\u20132.57\u00a0\u03bcmol.mol\u22121) and Si isotope composition (0.26\u20131.21\u2030) values of the NI rivers reveal differences in the watersheds' weathering degree. Dissolution of Ge- and 28Si-rich secondary minerals explains the high Ge/Si and isotopically light composition of the northern NI rivers draining strongly weathered terranes. The Ge/Si ratio and \u03b430Si values measured for the NI and HI rivers overlap, implying that they cannot be used to diagnose hydrothermal contributions to river basins unambiguously. However, when combined with the Cl\u2212 and SO42\u2212 concentrations, the analysis of Ge and Si in the HI rivers suggests that water seeping through an extinct hydrothermal system produces SO4-rich drainages with distinctively lower Ge/Si ratios than those inferred for watersheds receiving thermal spring discharges associated with an active hydrothermal system. Overall, our results provide new constraints for applying and interpreting Ge/Si and Si isotope measurements to study weathering in volcanic environments.", "keywords": ["[SDE] Environmental Sciences", "Volcanic hydrothermal system", "Chemical weathering", "River geochemistry", "Si isotope", "Ge/Si ratio", "13. Climate action", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "Guadeloupe", "01 natural sciences", "6. Clean water", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/2078.1/246033"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemical%20Geology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/246033", "name": "item", "description": "2078.1/246033", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/246033"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-01T00:00:00Z"}}, {"id": "2078.1/289112", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2024-06-17", "title": "A Third of Organic Carbon Is Mineral Bound in Permafrost Sediments Exposed by the World's Largest Thaw Slump, Batagay, Siberia", "description": "ABSTRACT<p>Organic carbon (OC) in permafrost interacts with the mineral fraction of soil and sediments, representing &lt;\uffe2\uff80\uff891% to ~80% of the total OC pool. Quantifying the nature and controls of mineral\uffe2\uff80\uff93OC interactions is therefore crucial for realistic assessments of permafrost\uffe2\uff80\uff90carbon\uffe2\uff80\uff90climate feedbacks, especially in ice\uffe2\uff80\uff90rich regions facing rapid thaw and the development of thermo\uffe2\uff80\uff90erosion landforms. Here, we analyzed sediment samples from the Batagay megaslump in East Siberia, and we present total element concentrations, mineralogy, and mineral\uffe2\uff80\uff93OC interactions in its different stratigraphic units. Our findings indicate that up to 34\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff898% of the OC pool interacts with mineral surfaces or elements. Interglacial deposits exhibit enhanced OC\uffe2\uff80\uff93mineral interactions, where OC has undergone greater microbial transformation and has likely low degradability. We provide a first\uffe2\uff80\uff90order estimate of ~12,000 tons of OC mobilized annually downslope of the headwall (i.e., the approximate mass of 30 large aircrafts), with a maximum of 38% interacting with OC via complexation with metals or associations to poorly crystalline iron oxides. These data imply that over one\uffe2\uff80\uff90third of the OC exposed by the slump is not readily available for mineralization, potentially leading to prolonged OC residence time in soil and sediments under stable physicochemical conditions.</p", "keywords": ["0301 basic medicine", "mineral-organic carbon interactions", "03 medical and health sciences", "iron", "retrogressive thaw slumps", "13. Climate action", "thermo-erosion", "Batagay", "15. Life on land", "headwall", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/2078.1/289112"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Permafrost%20and%20Periglacial%20Processes", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/289112", "name": "item", "description": "2078.1/289112", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/289112"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-17T00:00:00Z"}}, {"id": "2078.1/235031", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2020-06-08", "title": "The next generation of climate model should account for the evolution of mineral-organic interactions with permafrost thaw", "description": "The Earth\u2019s high latitude regions are warming twice as fast as the global average which enhances the thawing of permafrost, i.e. the perennially frozen ground which underlies about 25% of the exposed land surface in the Northern Hemisphere (Brown et al 1998). Permafrost thaw exposes previously frozen organic carbon (OC) to microbial decomposition with subsequent emission of the greenhouse gases carbon dioxide (CO2) and methane (CH4) into the atmosphere, creating positive feedback on global warming, i.e. the permafrost carbon feedback (Schuur et al 2015). Permafrost contains 1460\u20131600 GtC, almost twice the C in the atmosphere (IPCC 2019), and 15 \u00b1 3% of that OC stock could be emitted as greenhouse gases by 2100 (Schuur et al 2015). On an annual basis, this would represent 22%\u201331% of the current anthropogenic C emissions (considering anthropogenic C emissions from IPCC 2019). Most of that C would be emitted as CO2 but it is estimated that 2.3% of the permafrost C emissions will be released as CH4 (Schuur et al 2015). This has implications for the Earth\u2019s radiative balance, given the larger global warming potential of CH4 at the century time scale. Therefore, evidence is mounting that permafrost thaw represents a tipping element in the Earth climate system (Lenton et al 2019). Yet uncertainties are associated with how this will unfold.", "keywords": ["organic", "Science", "QC1-999", "Environmental technology. Sanitary engineering", "01 natural sciences", "7. Clean energy", "arctic", "GE1-350", "Renewable Energy", "TD1-1066", "General Environmental Science", "0105 earth and related environmental sciences", "Sustainability and the Environment", "carbon", "organic carbon", "Physics", "Environmental and Occupational Health", "Q", "minerals", "15. Life on land", "artic", "Environmental sciences", "13. Climate action", "Public Health", "thaw", "carbon emissions", "permafrost"], "contacts": [{"organization": "Sophie Opfergelt", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/2078.1/235031"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Research%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/235031", "name": "item", "description": "2078.1/235031", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/235031"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-08-21T00:00:00Z"}}, {"id": "2078.1/246444", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2021-05-18", "title": "Eruptive style controls the formation of silicon hexafluoride salts on volcanic ash: The case of the 2010 eruption of Eyjafjallaj\u00f6kull volcano, Iceland", "description": "Abstract   The presence of fluoride (F\u2212)-bearing compounds in volcanic ash fallout is recognised to pose significant environmental and health hazards. Nevertheless, understanding of the formation and composition of these compounds remains limited, or even inconsistent. This hampers full comprehension of the risks and impacts elicited by fluorine-rich ash emissions after an explosive eruption. The 2010 activity of Eyjafjallajokull volcano in Iceland was characterised by contrasted eruptive styles - phreatomagmatic and magmatic - which produced ash deposits with distinct soluble F\u2212 contents. Based on X-ray photoelectron spectroscopy and leachate analyses of Eyjafjallajokull ash materials, we infer the existence of silicon hexafluoride salts, particularly Na2SiF6, dominantly if not exclusively on the magmatic ash, and suggest a reaction mechanism for their formation. The presence of Na2SiF6 explains the much greater F\u2212 concentration and higher acidity measured in leachates of the magmatic ash compared to those of the phreatomagmatic ash. River waters affected by ash deposition during the magmatic activity showed a temporary increase in F\u2212 and decrease in dissolved silicon isotope values (\u03b430Si). We contend that the formation of silicon hexafluoride salts on ash leads to a surface enrichment of the ash's silicate glass and mineral components in 28Si, with the release of this light Si from the magmatic ash during the early stage of weathering causing a depression in the riverine \u03b430Si. This supports existing evidence of silicate dissolution processes being influenced by the presence of fluorine. Our study also points to the likely important role of Na2SiF6 in modulating the environmental and health effects of ash emissions from fluorine-rich magmatic eruptions.", "keywords": ["Silicon hexafluoride salts", "13. Climate action", "Eyjafjallaj\u00f6kull volcano", "Silicon isotopes", "Ash", "Fluoride", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/2078.1/246444"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemical%20Geology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/246444", "name": "item", "description": "2078.1/246444", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/246444"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-01T00:00:00Z"}}, {"id": "2078.1/252765", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2021-10-26", "title": "Quantifying Non\u2010Thermal Silicate Weathering Using Ge/Si and Si Isotopes in Rivers Draining the Yellowstone Plateau Volcanic Field, USA", "description": "Abstract<p>In active volcanic regions, high\uffe2\uff80\uff90temperature chemical reactions in the hydrothermal system consume CO2 sourced from magma or from the deep crust, whereas reactions with silicates at shallow depths mainly consume atmospheric CO2. Numerous studies have quantified the load of dissolved solids in rivers that drain volcanic regions to determine chemical weathering rates and atmospheric CO2 consumption rates. However, the balance between thermal and non\uffe2\uff80\uff90thermal components to riverine fluxes in these areas remains poorly constrained, hindering accurate estimates of atmospheric CO2 consumption rates. Here we use the Ge/Si ratio and the stable silicon isotopes (\uffce\uffb430Si) as tracers for quantifying non\uffe2\uff80\uff90thermal silicon contributions in rivers draining the Yellowstone Plateau Volcanic Field, USA. The Ge/Si ratio (\uffc2\uffb5mol.mol\uffe2\uff88\uff921) was determined for seven thermal water samples (183\uffc2\uffa0\uffc2\uffb1\uffc2\uffa022), eight rivers (35\uffc2\uffa0\uffc2\uffb1\uffc2\uffa023) and six creeks flowing into Yellowstone Lake (5\uffc2\uffa0\uffc2\uffb1\uffc2\uffa03) during base flow and during peak water discharge following snowmelt. The \uffce\uffb430Si value (\uffe2\uff80\uffb0) was determined for thermal waters (\uffe2\uff88\uff920.09\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.04), Yellowstone River at Yellowstone Lake outlet (1.91\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.23) and creek samples (0.82\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.29). The calculated atmospheric CO2 consumption associated with non\uffe2\uff80\uff90thermal waters flowing through Yellowstone's rivers during peak discharge is \uffe2\uff88\uffbc3.03 ton.km\uffe2\uff88\uff922.yr\uffe2\uff88\uff921, which is \uffe2\uff88\uffbc2% of the annual mean atmospheric CO2 consumption in other volcanic regions. This study highlights the significance of quantifying seasonal variations in chemical weathering rates for improving estimates of atmospheric CO2 consumption rates in active volcanic regions.</p", "keywords": ["hydrothermal", "QE1-996.5", "QC801-809", "Geophysics. Cosmic physics", "Geology", "seasonal", "7. Clean energy", "01 natural sciences", "6. Clean water", "Geophysics", "Geochemistry", "Geosystems", "silicon isotopes", "Geochemistry and Petrology", "13. Climate action", "Yellowstone", "weathering", "Ge/Si", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2021GC009904"}, {"href": "https://doi.org/2078.1/252765"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geochemistry%2C%20Geophysics%2C%20Geosystems", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/252765", "name": "item", "description": "2078.1/252765", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/252765"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-11-01T00:00:00Z"}}, {"id": "2078.1/246530", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2021-04-13", "title": "Modern silicon dynamics of a small high-latitude subarctic lake", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. High biogenic silica (BSi) concentrations occur sporadically in lake sediments throughout the world; however, the processes leading to high BSi concentrations vary. We explored the factors responsible for the high BSi concentration in sediments of a small, high-latitude subarctic lake (Lake 850). The Si budget of this lake had not been fully characterized before to establish the drivers of BSi accumulation in this environment. To do this, we combined measurements of variations in stream discharge, dissolved silica (DSi) concentrations, and stable Si isotopes in both lake and stream water with measurements of BSi content in lake sediments. Water, radon, and Si mass balances revealed the importance of groundwater discharge as a main source of DSi to the lake, with groundwater-derived DSi inputs 3 times higher than those from ephemeral stream inlets. After including all external DSi sources (i.e., inlets and groundwater discharge) and estimating the total BSi accumulation in the sediment, we show that diatom production consumes up to 79\u2009% of total DSi input. Additionally, low sediment accumulation rates were observed based on the dated gravity core. Our findings thus demonstrate that groundwater discharge and low mass accumulation rate can account for the high BSi accumulation during the last 150\u2009cal\u2009yr\u2009BP. Globally, lakes have been estimated to retain one-fifth of the annual DSi terrestrial weathering flux that would otherwise be delivered to the ocean. Well-constrained lake mass balances, such as presented here, bring clarity to those estimates of the terrestrial Si cycle sinks.</p></article>", "keywords": ["0106 biological sciences", "QE1-996.5", "550", "Ecology", "Geology", "Multidisciplin\u00e4r geovetenskap", "01 natural sciences", "6. Clean water", "Life", "13. Climate action", "QH501-531", "Earth Sciences", "14. Life underwater", "Geosciences", " Multidisciplinary", "QH540-549.5", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://bg.copernicus.org/articles/18/2325/2021/bg-18-2325-2021.pdf"}, {"href": "https://doi.org/2078.1/246530"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeosciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/246530", "name": "item", "description": "2078.1/246530", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/246530"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-12-11T00:00:00Z"}}, {"id": "2078.1/249649", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2021-06-29", "title": "Impact of Holocene climate change on silicon cycling in Lake 850, Northern Sweden", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p> Diatom-rich sediment in a small subarctic lake (Lake 850) was investigated in a 9400\u2009cal.\u2009yr\u2009BP sediment record in order to explore the impact of Holocene climate evolution on silicon cycling. Diatom stable silicon isotopes ([Formula: see text]) and biogenic silica (BSi) indicate that high BSi concentrations in sediment throughout the Holocene are associated with a lighter Si isotope source of dissolved silica (DSi), such as groundwater or freshly weathered primary minerals. Furthermore, higher BSi concentrations were favoured during the mid-Holocene by low detrital inputs and possibly a longer ice-free period allowing for more diatom production to occur. The diatom [Formula: see text] signature shows a link to changes in regional climate and is influenced by length of diatom growth period and hydrological fluctuations. Lighter Si isotopic values occur during the mid-Holocene, when climate is inferred to be more continental and drier, with pronounced seasonality. In contrast, a heavier Si isotopic signature is observed in the early and late Holocene, when oceanic influences are thought to be stronger and the climate wetter. The [Formula: see text] values have generally lighter signatures as compared with other studies, which supports a light DSi source. </p></article>", "keywords": ["Global and Planetary Change", "Ecology", "Archaeology", "13. Climate action", "8. Economic growth", "Paleontology", "01 natural sciences", "Earth-Surface Processes", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://journals.sagepub.com/doi/pdf/10.1177/09596836211025973"}, {"href": "https://doi.org/2078.1/249649"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/The%20Holocene", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/249649", "name": "item", "description": "2078.1/249649", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/249649"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-06-29T00:00:00Z"}}, {"id": "2078.1/250558", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2021-09-04", "title": "Mineral Element Stocks in the Yedoma Domain: A Novel Method Applied to Ice-Rich Permafrost Regions", "description": "<p>With permafrost thaw, significant amounts of organic carbon (OC) previously stored in frozen deposits are unlocked and become potentially available for microbial mineralization. This is particularly the case in ice-rich regions such as the Yedoma domain. Excess ground ice degradation exposes deep sediments and their OC stocks, but also mineral elements, to biogeochemical processes. Interactions of mineral elements and OC play a crucial role for OC stabilization and the fate of OC upon thaw, and thus regulate carbon dioxide and methane emissions. In addition, some mineral elements are limiting nutrients for plant growth or microbial metabolic activity. A large ongoing effort is to quantify OC stocks and their lability in permafrost regions, but the influence of mineral elements on the fate of OC or on biogeochemical nutrient cycles has received less attention and there is an overall lack of mineral element content analyses for permafrost sediments. Here, we combine portable X-ray fluorescence (pXRF) with a bootstrapping technique to provide i) the first large-scale Yedoma domain Mineral Concentrations Assessment (YMCA) dataset, and ii) estimates of mineral element stocks in never thawed (since deposition) ice-rich Yedoma permafrost and previously thawed and partly refrozen Alas deposits. The pXRF method for mineral element quantification is non-destructive and offers a complement to the classical dissolution and measurement by optical emission spectrometry (ICP-OES) in solution. Using this method, mineral element concentrations (Si, Al, Fe, Ca, K, Ti, Mn, Zn, Sr and Zr) were assessed on 1,292 sediment samples from the Yedoma domain with lower analytical effort and lower costs relative to the ICP-OES method. The pXRF measured concentrations were calibrated using alkaline fusion and ICP-OES measurements on a subset of 144 samples (R2 from 0.725 to 0.996). The results highlight that i) the mineral element stock in sediments of the Yedoma domain (1,387,000\uffc2\uffa0km2) is higher for Si, followed by Al, Fe, K, Ca, Ti, Mn, Zr, Sr, and Zn, and that ii) the stock in Al and Fe (598 \uffc2\uffb1 213 and 288 \uffc2\uffb1 104\uffc2\uffa0Gt) is in the same order of magnitude as the OC stock (327\uffe2\uff80\uff93466\uffc2\uffa0Gt).</p", "keywords": ["ddc:550", "late pleistocene- holocene", "thermokarst", "Science", "Q", "X-ray fluorescence", "01 natural sciences", "6. Clean water", "13. Climate action", "arctic", "alas", "Institut f\u00fcr Geowissenschaften", "thaw", "mineralogy", "late pleistocene \u2013 holocene", "bootstrapping technique", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/2078.1/250558"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Frontiers%20in%20Earth%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/250558", "name": "item", "description": "2078.1/250558", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/250558"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-03T00:00:00Z"}}, {"id": "2078.1/254334", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2021-11-12", "title": "Reconstructing Permafrost Sedimentological Characteristics and Post-depositional Processes of the Yedoma Stratotype Duvanny Yar, Siberia", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Cryogenic weathering is a key driver of periglacial sediment composition and properties. Selective mineral-grain weathering caused by freeze-thaw cycles in permafrost environments has the ability to dominate this process, leading to silt-rich grain-size distributions. The cryogenic weathering index (CWI) is a promising tool to quantify cryogenic weathering and freezing conditions. It considers the low resistance of quartz to freeze-thaw cycles compared to feldspars. Using this approach, this study aims to decipher post-depositional weathering by reconstructing cryogenic late Pleistocene Yedoma origins of the Yedoma stratotype exposure Duvanny Yar. To estimate the recent environmental endmember and to determine the initial mineral composition of sediment until freezing, the distribution of CWI in the active layer was studied. In addition to CWI, we studied mineral composition, heavy mineral distribution, grain size distribution and grain morphology. We suggest that cryogenic weathering likely altered polygenetic deposits (fluvial, nival, colluvial, lacustrine, alluvial, and aeolian processes) during sediment and ground ice accumulation. Moreover, we found two CWI distribution peaks in the late Pleistocene - Holocene sediments at the boundaries between glacial and interglacial ages. In conclusion, we see that the Duvanny Yar sediment facies varied by CWI, but also with grain-size distribution, suggesting environmental changes during formation. Nevertheless, post-depositional processes like cryogenic weathering have influenced sediment characteristics and should be considered in paleoenvironmental reconstructions.</p></article>", "keywords": ["Arctic", "Holocene", "cryogenic weathering", "Kolyma lowland", "13. Climate action", "Science", "late Pleistocene", "Q", "15. Life on land", "01 natural sciences", "permafrost", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/2078.1/254334"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Frontiers%20in%20Earth%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/254334", "name": "item", "description": "2078.1/254334", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/254334"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-10-29T00:00:00Z"}}, {"id": "2078.1/273814", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2023-03-18", "title": "Evidence for late winter biogeochemical connectivity in permafrost soils", "description": "Abstract<p>The permafrost active layer is a key supplier of soil organic carbon and mineral nutrients to Arctic rivers. In the active layer, sites of soil-water exchange are locations for organic carbon and nutrient mobilization. Previously these sites were considered as connected during summer months and isolated during winter months. Whether soil pore waters in active layer soils are connected during shoulder seasons is poorly understood. In this study, exceptionally heavy silicon isotope compositions in soil pore waters show that during late winter, there is no connection between isolated pockets of soil pore water in soils with a shallow active layer. However, lighter silicon isotope compositions in soil pore waters reveal that soils are biogeochemically connected for longer than previously considered in soils with a deeper active layer. We show that an additional 21% of the 0\uffe2\uff80\uff931\uffe2\uff80\uff89m soil organic carbon stock is exposed to soil - water exchange. This marks a hot moment during a dormant season, and an engine for organic carbon transport from active layer soils. Our findings mark the starting point to locate earlier pathways for biogeochemical connectivity, which need to be urgently monitored to quantify the seasonal flux of organic carbon released from permafrost soils.</p", "keywords": ["Environmental sciences", "QE1-996.5", "snowmelt", "colloids", "13. Climate action", "arctic", "silicon", "Geology", "GE1-350", "early season", "15. Life on land", "permafrost"]}, "links": [{"href": "https://doi.org/2078.1/273814"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Communications%20Earth%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/273814", "name": "item", "description": "2078.1/273814", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/273814"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-03-18T00:00:00Z"}}, {"id": "2078.1/277749", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2023-09-04", "title": "Quantifying exchangeable base cations in permafrost: a reserve of nutrients about to thaw", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. Permafrost ecosystems are limited in nutrients for vegetation development and constrain the biological activity to the active layer. Upon Arctic warming, permafrost thaw exposes large amounts of soil organic carbon (SOC) to decomposition and minerals to weathering but also releases organic and mineral soil material that may directly influence the soil exchange properties (cation exchange capacity, CEC, and base saturation, BS). The soil exchange properties are key for nutrient base cation supply (Ca2+, K+, Mg2+, and Na+) for vegetation growth and development. In this study, we investigate the distributions of soil exchange properties within Arctic tundra permafrost soils at Eight Mile Lake (Interior Alaska, USA) because they will dictate the potential reservoir of newly thawed nutrients and thereby influence soil biological activity and vegetation nutrient sources. Our results highlight much lower CEC density in surface horizons (\u223c9400\u2009cmolc\u2009m\u22123) than in the mineral horizons of the active layer (\u223c16\u2009000\u2009cmolc\u2009m\u22123) or in permafrost soil horizons (\u223c12\u2009000\u2009cmolc\u2009m\u22123). Together, with the overall increase in CEC density with depth and the overall increase in BS (percentage of CEC occupied by exchangeable base cations Ca2+, K+, Mg2+, and Na+) with depth (from \u223c19\u2009% in organic surface horizons to 62\u2009% in permafrost soil horizons), the total exchangeable base cation density (Ca2+, K+, Mg2+, and Na+ in g\u2009m\u22123) is up to 5\u00a0times higher in the permafrost than in the active layer. More specifically, the exchangeable base cation density in the 20\u2009cm upper part of permafrost about to thaw is \u223c850\u2009g\u2009m\u22123 for Caexch, 45\u2009g\u2009m\u22123 for Kexch, 200\u2009g\u2009m\u22123 for Mgexch, and 150\u2009g\u2009m\u22123 for Naexch. This estimate is needed for future ecosystem prediction models to provide constraints on the size of the reservoir in exchangeable nutrients (Ca, K, Mg, and Na) about to thaw. All data described in this paper are stored in Dataverse, the online repository of Universit\u00e9 catholique de Louvain, and are accessible through the following DOI: https://doi.org/10.14428/DVN/FQVMEP (Mauclet et al., 2022b).</p></article>", "keywords": ["QE1-996.5", "nutrient", "Geology", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "soil", "Environmental sciences", "13. Climate action", "arctic", "0401 agriculture", " forestry", " and fisheries", "GE1-350", "permafrost", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/2078.1/277749"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Earth%20System%20Science%20Data", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/277749", "name": "item", "description": "2078.1/277749", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/277749"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-09-04T00:00:00Z"}}, {"id": "2078.1/258216", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2022-02-02", "title": "Seasonal Changes in Hydrology and Permafrost Degradation Control Mineral Element\u2010Bound DOC Transport From Permafrost Soils to Streams", "description": "Abstract<p>Mineral elements bind to dissolved organic carbon (DOC) in permafrost soils, and this may contribute to the stabilization or the degradation of organic carbon along the soil to river continuum. Permafrost thaw enlarges the pool of soil constituents available for soil to river transfer. The unknown is how changes in hydrology upon permafrost degradation affect the connection between soil\uffe2\uff80\uff90derived mineral element\uffe2\uff80\uff90bound DOC and headwater streams. Here, we study Al, Fe, Ca, and DOC concentrations in water from a headwater stream at Eight Mile Lake, Alaska, USA (colloidal [0.22 \uffce\uffbcm\uffe2\uff80\uff931 kDa] and truly dissolved [&lt;1\uffc2\uffa0kDa] fractions) and in soil pore waters sampled across a gradient of permafrost degradation at the same location. We target the peak flow to base flow transition to show that there is a narrow window of mineral element\uffe2\uff80\uff90bound DOC colloid transport from soils to streams. We show that during spring thaw and maximum thaw there is an enhanced lateral transfer of mineral element\uffe2\uff80\uff90bound DOC colloids in extensively degraded sites compared to minimally degraded sites. This is explained by a more rapid response of hydrology at peak flow to base flow transition at degraded sites. Our results suggest that ongoing permafrost degradation and the associated response of soils to changing hydrology can be detected by targeting the composition and size of mineral element\uffe2\uff80\uff90DOC associations in soil waters and headwater streams during peak flow\uffe2\uff80\uff90baseflow transitions.</p", "keywords": ["13. Climate action", "15. Life on land", "01 natural sciences", "6. Clean water", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2021GB007105"}, {"href": "https://doi.org/2078.1/258216"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Biogeochemical%20Cycles", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/258216", "name": "item", "description": "2078.1/258216", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/258216"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-02-01T00:00:00Z"}}, {"id": "2078.1/267255", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2022-11-17", "title": "Hydraulic flux\u2013responsive hormone redistribution determines root branching", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Plant roots exhibit plasticity in their branching patterns to forage efficiently for heterogeneously distributed resources, such as soil water. The xerobranching response represses lateral root formation when roots lose contact with water. Here, we show that xerobranching is regulated by radial movement of the phloem-derived hormone abscisic acid, which disrupts intercellular communication between inner and outer cell layers through plasmodesmata. Closure of these intercellular pores disrupts the inward movement of the hormone signal auxin, blocking lateral root branching. Once root tips regain contact with moisture, the abscisic acid response rapidly attenuates. Our study reveals how roots adapt their branching pattern to heterogeneous soil water conditions by linking changes in hydraulic flux with dynamic hormone redistribution.</p></article>", "keywords": ["580", "0301 basic medicine", "0303 health sciences", "Multidisciplinary", "550", "Indoleacetic Acids", "Plasmodesmata", "Arabidopsis", "Water", "Phloem", "15. Life on land", "Plant Roots", "Soil", "03 medical and health sciences", "Plant Growth Regulators", "Abscisic Acid"]}, "links": [{"href": "https://eprints.lancs.ac.uk/id/eprint/180301/1/Poonam_add3771_Main_manuscript.pdf"}, {"href": "https://doi.org/2078.1/267255"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/267255", "name": "item", "description": "2078.1/267255", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/267255"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-11-18T00:00:00Z"}}, {"id": "2078.1/275451", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2023-06-02", "title": "Mineral organic carbon interactions in dry versus wet tundra soils", "description": "Mineral organic carbon interactions (aggregation, organo-mineral associations and organo-metallic complexes) enhance the protection of organic carbon (OC) from microbial degradation in soils. The northern circumpolar permafrost region stores between 1,440 and 1,600 Pg OC of which a significant portion is already thawed or about to thaw in coming years. In the light of this tipping point for climate change, any mechanism that can promote OC stabilization and hence mitigate OC mineralization and greenhouse gas emissions is of crucial interest. Here, we study interactions between metals (Fe, Al, Mn and Ca) and OC in the moist acidic tundra ecosystem of Eight Mile Lake, near Healy, AK, USA. We collected thirteen cores (124 soil samples) in late summer 2019 with shallow and deep active layers (45 to 109 cm deep) and varying water table depths. We find that between 6% and 59% of total OC in Eight Mile Lake tundra soils is mineral-associated (mean 20%), in organomineral associations (association between poorly crystalline oxides and OC) and in organo-metallic complexes (associations between Fe, Mn, Al, Ca polyvalent cations and organic acids). We find that total Fe and Mn concentrations can be used as good proxies to assess the reactive pool of these metals able to form associations with OC, i.e., poorly crystalline oxides or metals complexed with OC. We observe that in the active layer, mineral OC interactions are mostly as organo-metallic complexes with Fe cations, with an accumulation at the water table level acting as a soil redox interface. In waterlogged soils with a water table level above surface, no such accumulation of OC-Fe complexes is found due to the absence of a redox interface below soil surface. In the permafrost layer, we find that a combination of complexed metals and poorly crystalline Fe oxides act as reactive phases towards OC. Knowing that upon permafrost thaw tundra soils will become wetter or drier, the assessment of mineral-bound OC in drier or wetter tundra soils is a needed step to better constrain the changes in the proportion of non-protected OC more likely to contribute to C emissions from tundra soils.", "keywords": ["mineral-associated organic carbon", "metal complexation", "Permafrost", "eight mile lake", "Thawing"]}, "links": [{"href": "https://doi.org/2078.1/275451"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoderma", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/275451", "name": "item", "description": "2078.1/275451", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/275451"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-08-01T00:00:00Z"}}, {"id": "2078.1/293939", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2024-11-25", "title": "Frazil ice changes winter biogeochemical processes in the Lena River", "description": "The ice-covered period of large Arctic rivers is shortening. To what extent will this affect biogeochemical processing of nutrients? Here we reveal, with silicon isotopes (\u03b430Si), a key winter pathway for nutrients under river ice. During colder winter phases in the Lena River catchment, conditions are met for frazil ice accumulation, which creates microzones. These are conducive to a lengthened reaction time for biogeochemical processes under ice. The heavier \u03b430Si values (3.5\u2009\u00b1\u20090.5 \u2030) in river water reflect that 39\u2009\u00b1\u200911% of the Lena River discharge went through these microzones. Freezing-driven amorphous silica precipitation concomitant to increased ammonium concentration and changes in dissolved organic carbon aromaticity in Lena River water support microbially mediated processing of nutrients in the microzones. Upon warming, suppressing loci for winter intra-river nitrogen processing is likely to modify the balance between N2O production and consumption, a greenhouse gas with a large global warming potential.", "keywords": ["Environmental sciences", "QE1-996.5", "/704/242 ; Article ; /704/106/125 ; /704/47/4112 ; /704/172/169/209 ; article", "Geology", "GE1-350", "01 natural sciences", "Article", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/2078.1/293939"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Communications%20Earth%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/293939", "name": "item", "description": "2078.1/293939", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/293939"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-11-25T00:00:00Z"}}, {"id": "2078.1/296805", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:02Z", "type": "Journal Article", "created": "2025-01-06", "title": "Lena River biogeochemistry captured by a 4.5-year high-frequency sampling program", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. The Siberian Arctic is warming rapidly, causing permafrost to thaw and altering the biogeochemistry of aquatic environments, with cascading effects on the coastal and shelf ecosystems of the Arctic Ocean. The Lena River, one of the largest Arctic rivers, drains a catchment dominated by permafrost. Baseline discharge biogeochemistry data are necessary to understand present and future changes in land-to-ocean fluxes. Here, we present a high-frequency 4.5-year-long dataset from a sampling program of the Lena River's biogeochemistry, spanning April\u00a02018 to August\u00a02022. The dataset comprises 587 sampling events and measurements of various parameters, including water temperature, electrical conductivity, stable oxygen and hydrogen isotopes, dissolved organic carbon concentration and 14C, colored and fluorescent dissolved organic matter, dissolved inorganic and total nutrients, and dissolved elemental and ion concentrations. Sampling consistency and continuity and data quality were ensured through simple sampling protocols, real-time communication, and collaboration with local and international partners. The data are available as a collection of datasets separated by parameter groups and periods at https://doi.org/10.1594/PANGAEA.913197 (Juhls et al., 2020b). To our knowledge, this dataset provides an unprecedented temporal resolution of an Arctic river's biogeochemistry. This makes it a unique baseline on which future environmental changes, including changes in river hydrology, at temporal scales from precipitation event to seasonal to interannual can be detected.</p></article>", "keywords": ["Environmental sciences", "QE1-996.5", "13. Climate action", "/dk/atira/pure/sustainabledevelopmentgoals/life_on_land; name=SDG 15 - Life on Land", "GE1-350", "Geology", "14. Life underwater", "15. Life on land"]}, "links": [{"href": "https://doi.org/2078.1/296805"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Earth%20System%20Science%20Data", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2078.1/296805", "name": "item", "description": "2078.1/296805", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2078.1/296805"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-07-30T00:00:00Z"}}, {"id": "208fa919-0a82-4e0f-a7a3-90847f4df60a", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Dataset", "language": "nl", "title": "Canal systems to aerial view", "description": "This map shows the trench systems drawn on the basis of the aerial photographs.", "formats": [{"name": "KML"}], "keywords": ["be", "bodem", "bodemmechanica", "databank-ondergrond-vlaanderen", "departement-mobiliteit-en-openbare-werken", "dov", "geologie", "geulenstelsels-naar-luchtfoto", "ondergrond", "vlaanderen"], "contacts": [{"organization": "Departement Mobiliteit en Openbare Werken (MOW) - Afdeling Geotechniek", "roles": ["creator"]}, {"organization": "https://org.belgif.be/id/CbeEstablishmentUnit/2143719695", "roles": ["publisher"]}]}, "links": [{"href": "https://metadata.vlaanderen.be/srv/dut/catalog.search#/metadata/dc9b6670-d2f2-46f8-acb8-21d891bc56bb"}, {"href": "https://www.vlaanderen.be/DataCatalogRecord/dc9b6670-d2f2-46f8-acb8-21d891bc56bb"}, {"href": "http://data.europa.eu/88u/dataset/208fa919-0a82-4e0f-a7a3-90847f4df60a"}, {"rel": "self", "type": "application/geo+json", "title": "208fa919-0a82-4e0f-a7a3-90847f4df60a", "name": "item", "description": "208fa919-0a82-4e0f-a7a3-90847f4df60a", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/208fa919-0a82-4e0f-a7a3-90847f4df60a"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"null": "date"}}, {"id": "21.11116/0000-0000-CD53-C", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Report", "created": "2017-11-13", "title": "Global Carbon Budget 2017", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere \u2013 the 'global carbon budget' \u2013 is important to better understand the global carbon cycle, support the development of climate policies, and project future climate change. Here we describe data sets and methodology to quantify the five major components of the global carbon budget and their uncertainties. CO2 emissions from fossil fuels and industry (EFF) are based on energy statistics and cement production data, respectively, while emissions from land-use change (ELUC), mainly deforestation, are based on land-cover change data and bookkeeping models. The global atmospheric CO2 concentration is measured directly and its rate of growth (GATM) is computed from the annual changes in concentration. The ocean CO2 sink (SOCEAN) and terrestrial CO2 sink (SLAND) are estimated with global process models constrained by observations. The resulting carbon budget imbalance (BIM), the difference between the estimated total emissions and the estimated changes in the atmosphere, ocean, and terrestrial biosphere, is a measure of our imperfect data and understanding of the contemporary carbon cycle. All uncertainties are reported as \u00b11\u03c3. For the last decade available (2007\u20132016), EFF was 9.4\u2009\u00b1\u20090.5\u2009GtC\u2009yr\u22121, ELUC 1.3\u2009\u00b1\u20090.7\u2009GtC\u2009yr\u22121, GATM 4.7\u2009\u00b1\u20090.1\u2009GtC\u2009yr\u22121, SOCEAN 2.4\u2009\u00b1\u20090.5\u2009GtC\u2009yr\u22121, and SLAND 3.0\u2009\u00b1\u20090.8\u2009GtC\u2009yr\u22121, with a budget imbalance BIM of 0.6\u2009GtC\u2009yr\u22121 indicating overestimated emissions and/or underestimated sinks. For year 2016 alone, the growth in EFF was approximately zero and emissions remained at 9.9\u2009\u00b1\u20090.5\u2009GtC\u2009yr\u22121. Also for 2016, ELUC was 1.3\u2009\u00b1\u20090.7\u2009GtC\u2009yr\u22121, GATM was 6.1\u2009\u00b1\u20090.2\u2009GtC\u2009yr\u22121, SOCEAN was 2.6\u2009\u00b1\u20090.5\u2009GtC\u2009yr\u22121 and SLAND was 2.7\u2009\u00b1\u20091.0\u2009GtC\u2009yr\u22121, with a small BIM of \u22120.3\u2009GtC. GATM continued to be higher in 2016 compared to the past decade (2007\u20132016), reflecting in part the higher fossil emissions and smaller SLAND for that year consistent with El Ni\u00f1o conditions. The global atmospheric CO2 concentration reached 402.8\u2009\u00b1\u20090.1\u2009ppm averaged over 2016. For 2017, preliminary data indicate a renewed growth in EFF of +2.0\u2009% (range of 0.8\u2009% to 3.0\u2009%) based on national emissions projections for China, USA, and India, and projections of Gross Domestic Product corrected for recent changes in the carbon intensity of the economy for the rest of the world. For 2017, initial data indicate an increase in atmospheric CO2 concentration of around 5.3\u2009GtC (2.5\u2009ppm), attributed to a combination of increasing emissions and receding El Ni\u00f1o conditions. This living data update documents changes in the methods and data sets used in this new global carbon budget compared with previous publications of this data set (Le Qu\u00e9r\u00e9 et al., 2016; 2015b; 2015a; 2014; 2013). All results presented here can be downloaded from https://doi.org/10.18160/GCP-2017.</p></article>", "keywords": ["13. Climate action", "11. Sustainability", "15. Life on land", "01 natural sciences", "7. Clean energy", "0105 earth and related environmental sciences", "12. Responsible consumption"]}, "links": [{"href": "https://doi.org/21.11116/0000-0000-CD53-C"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0000-CD53-C", "name": "item", "description": "21.11116/0000-0000-CD53-C", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0000-CD53-C"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-11-13T00:00:00Z"}}, {"id": "20f6245e-40bc-4ade-aff3-a87d3e4fcc26", "type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[-180.0, -56.0], [-180.0, 84.0], [180.0, 84.0], [180.0, -56.0], [-180.0, -56.0]]]}, "properties": {"themes": [{"concepts": [{"id": "geoscientificInformation"}], "scheme": "https://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_TopicCategoryCode"}, {"concepts": [{"id": "Soil science"}], "scheme": "Stratum"}, {"concepts": [{"id": "Global"}], "scheme": "Region"}], "updated": "2021-07-14T11:52:38", "type": "Dataset", "language": "eng", "title": "SoilGrids250m 2017-03 - Clay content (0-2 micro meter) mass fraction", "description": "Clay content (0-2 micro meter) mass fraction in % at 7 standard depths predicted using the global compilation of soil ground observations. Accuracy assessement of the maps is availble in Hengl et at. (2017) DOI: 10.1371/journal.pone.0169748. Data provided as GeoTIFFs with internal compression (co='COMPRESS=DEFLATE'). Measurement units: w%.", "formats": [{"name": "GTiff"}, {"name": "WWW:DOWNLOAD-1.0-ftp--download"}, {"name": "WWW:LINK-1.0-http--related"}], "keywords": ["clay", "digital soil mapping", "Soil science", "Global"], "contacts": [{"name": "Bas Kempen", "organization": "ISRIC - World Soil Information", "position": "Soil mapping specialist", "roles": ["Principal investigator"], "phones": [{"value": null}], "emails": [{"value": "bas.kempen@wur.nl"}], "addresses": [{"deliveryPoint": ["PO Box 353"], "city": "Wageningen", "administrativeArea": null, "postalCode": "6700AJ", "country": "Netherlands"}], "links": [{"href": null}]}, {"name": "Tom Hengl", "organization": "ISRIC - World Soil Information", "position": "Former staff", "roles": ["Author"], "phones": [{"value": null}], "emails": [{"value": "None"}], "addresses": [{"deliveryPoint": ["PO Box 353"], "city": "Wageningen", "administrativeArea": null, "postalCode": "6700AJ", "country": "Netherlands"}], "links": [{"href": null}]}], "distancevalue": "250", "distanceuom": "m"}, "links": [{"href": "https://files.isric.org/soilgrids/former/2017-03-10/data/CLYPPT_M_sl1_250m_ll.tif", "name": "Download GeoTIFF at depth 0 cm", "protocol": "WWW:DOWNLOAD-1.0-ftp--download", "rel": "download"}, {"href": "https://files.isric.org/soilgrids/former/2017-03-10/data/CLYPPT_M_sl2_250m_ll.tif", "name": "Download GeoTIFF at depth 5 cm", "protocol": "WWW:DOWNLOAD-1.0-ftp--download", "rel": "download"}, {"href": "https://files.isric.org/soilgrids/former/2017-03-10/data/CLYPPT_M_sl3_250m_ll.tif", "name": "Download GeoTIFF at depth 15 cm", "protocol": "WWW:DOWNLOAD-1.0-ftp--download", "rel": "download"}, {"href": "https://files.isric.org/soilgrids/former/2017-03-10/data/CLYPPT_M_sl4_250m_ll.tif", "name": "Download GeoTIFF at depth 30 cm", "protocol": "WWW:DOWNLOAD-1.0-ftp--download", "rel": "download"}, {"href": "https://files.isric.org/soilgrids/former/2017-03-10/data/CLYPPT_M_sl5_250m_ll.tif", "name": "Download GeoTIFF at depth 60 cm", "protocol": "WWW:DOWNLOAD-1.0-ftp--download", "rel": "download"}, {"href": "https://files.isric.org/soilgrids/former/2017-03-10/data/CLYPPT_M_sl6_250m_ll.tif", "name": "Download GeoTIFF at depth 100 cm", "protocol": "WWW:DOWNLOAD-1.0-ftp--download", "rel": "download"}, {"href": "https://files.isric.org/soilgrids/former/2017-03-10/data/CLYPPT_M_sl7_250m_ll.tif", "name": "Download GeoTIFF at depth 200 cm", "protocol": "WWW:DOWNLOAD-1.0-ftp--download", "rel": "download"}, {"href": "https://doi.org/10.1371/journal.pone.0169748", "name": "Scientific paper", "protocol": "WWW:LINK-1.0-http--related", "rel": "information"}, {"href": "https://www.isric.org/explore/soilgrids/faq-soilgrids-2017", "name": "Project webpage", "protocol": "WWW:LINK-1.0-http--related", "rel": "information"}, {"href": "https://files.isric.org/public/thumbnails/sg250m/18.png", "name": "preview", "description": "Web image thumbnail (URL)", "protocol": "WWW:LINK-1.0-http--image-thumbnail", "rel": "preview"}, {"rel": "self", "type": "application/geo+json", "title": "20f6245e-40bc-4ade-aff3-a87d3e4fcc26", "name": "item", "description": "20f6245e-40bc-4ade-aff3-a87d3e4fcc26", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/20f6245e-40bc-4ade-aff3-a87d3e4fcc26"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"interval": ["1950-01-01T00:00:00Z", "2015-12-01T00:00:00Z"]}}, {"id": "21.11116/0000-0000-F094-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2018-09-27", "title": "GOLUM-CNP v1.0: a data-driven modeling of carbon, nitrogen and phosphorus cycles in major terrestrial biomes", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. Global terrestrial nitrogen (N) and phosphorus (P) cycles are coupled to the global carbon (C) cycle for net primary production (NPP), plant C allocation, and decomposition of soil organic matter, but N and P have distinct pathways of inputs and losses. Current C-nutrient models exhibit large uncertainties in their estimates of pool sizes, fluxes, and turnover rates of nutrients, due to a lack of consistent global data for evaluating the models. In this study, we present a new model\u2013data fusion framework called the Global Observation-based Land-ecosystems Utilization Model of Carbon, Nitrogen and Phosphorus (GOLUM-CNP) that combines the CARbon DAta MOdel fraMework (CARDAMOM) data-constrained C-cycle analysis with spatially explicit data-driven estimates of N and P inputs and losses and with observed stoichiometric ratios. We calculated the steady-state N- and P-pool sizes and fluxes globally for large biomes. Our study showed that new N inputs from biological fixation and deposition supplied &gt;20\u2009% of total plant uptake in most forest ecosystems but accounted for smaller fractions in boreal forests and grasslands. New P inputs from atmospheric deposition and rock weathering supplied a much smaller fraction of total plant uptake than new N inputs, indicating the importance of internal P recycling within ecosystems to support plant growth. Nutrient-use efficiency, defined as the ratio of gross primary production (GPP) to plant nutrient uptake, were diagnosed from our model results and compared between biomes. Tropical forests had the lowest N-use efficiency and the highest P-use efficiency of the forest biomes. An analysis of sensitivity and uncertainty indicated that the NPP-allocation fractions to leaves, roots, and wood contributed the most to the uncertainties in the estimates of nutrient-use efficiencies. Correcting for biases in NPP-allocation fractions produced more plausible gradients of N- and P-use efficiencies from tropical to boreal ecosystems and highlighted the critical role of accurate measurements of C allocation for understanding the N and P cycles.</p></article>", "keywords": ["Atmospheric sciences", "550", "Organic chemistry", "Carbon Dynamics in Peatland Ecosystems", "Deposition (geology)", "01 natural sciences", "Nutrient cycle", "Agricultural and Biological Sciences", "Terrestrial ecosystem", "Biome", "Taiga", "2. Zero hunger", "QE1-996.5", "Ecology", "Primary production", "Nutrient Cycling", "Life Sciences", "Phosphorus", "Geology", "Carbon cycle", "Nitrogen Cycle", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "Chemistry", "Physical Sciences", "environment", "Ecosystem Functioning", "Biogeochemical Cycling of Nutrients in Aquatic Ecosystems", "Nitrogen", "Soil Science", "Environmental science", "Environmental Chemistry", "New production", "Soil Carbon Sequestration", "Biology", "Ecosystem", "0105 earth and related environmental sciences", "[SDU.OCEAN]Sciences of the Universe [physics]/Ocean", "Atmosphere", "[SDU.OCEAN] Sciences of the Universe [physics]/Ocean", " Atmosphere", "ddc:550", "Nitrogen Dynamics", "Paleontology", "FOS: Earth and related environmental sciences", "15. Life on land", "13. Climate action", "FOS: Biological sciences", "Environmental Science", "Phytoplankton", "Sediment", "[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces", "Soil Carbon Dynamics and Nutrient Cycling in Ecosystems", "Nutrient"]}, "links": [{"href": "https://gmd.copernicus.org/articles/11/3903/2018/gmd-11-3903-2018.pdf"}, {"href": "https://doi.org/21.11116/0000-0000-F094-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoscientific%20Model%20Development", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0000-F094-9", "name": "item", "description": "21.11116/0000-0000-F094-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0000-F094-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-03-22T00:00:00Z"}}, {"id": "21.11116/0000-0002-8A0B-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2018-10-12", "title": "Soil Organic Matter Persistence as a Stochastic Process: Age and Transit Time Distributions of Carbon in Soils", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>The question of why some types of organic matter are more persistent while others decompose quickly in soils has motivated a large amount of research in recent years. Persistence is commonly characterized as turnover or mean residence time of soil organic matter (SOM). However, turnover and residence times are ambiguous measures of persistence, because they could represent the concept of either age or transit time. To disambiguate these concepts and propose a metric to assess SOM persistence, we calculated age and transit time distributions for a wide range of soil organic carbon models. Furthermore, we show how age and transit time distributions can be obtained from a stochastic approach that takes a deterministic model of mass transfers among different pools and creates an equivalent stochastic model at the level of atoms. Using this approach we show the following: (1) Age distributions have relatively old mean values and long tails in relation to transit time distributions, suggesting that carbon stored in soils is on average much older than carbon in the release flux. (2) The difference between mean ages and mean transit times is large, with estimates of soil organic carbon persistence on the order of centuries or millennia when assessed using ages and on the order of decades when using transit or turnover times. (3) The age distribution is an appropriate metric to characterize persistence of SOM. An important implication of our analysis is that random chance is a factor that helps to explain why some organic matter persists for millennia in soil.</p></article>", "keywords": ["2. Zero hunger", "Aging", "time scales", "04 agricultural and veterinary sciences", "carbon storage", "15. Life on land", "Oceanography", "01 natural sciences", "soil models", "Atmospheric Sciences", "Geochemistry", "Climate change impacts and adaptation", "13. Climate action", "Geoinformatics", "Earth Sciences", "Meteorology & Atmospheric Sciences", "0401 agriculture", " forestry", " and fisheries", "soil carbon", "Climate Change Impacts and Adaptation", "Environmental Sciences", "model diagnostics", "Research Articles", "biogeochemical cycling", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018GB005950"}, {"href": "https://escholarship.org/content/qt2sh647x7/qt2sh647x7.pdf"}, {"href": "https://doi.org/21.11116/0000-0002-8A0B-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Biogeochemical%20Cycles", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0002-8A0B-7", "name": "item", "description": "21.11116/0000-0002-8A0B-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0002-8A0B-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-10-01T00:00:00Z"}}, {"id": "21.11116/0000-0000-F096-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2018-09-27", "title": "GOLUM-CNP v1.0: a data-driven modeling of carbon, nitrogen and phosphorus cycles in major terrestrial biomes", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. Global terrestrial nitrogen (N) and phosphorus (P) cycles are coupled to the global carbon (C) cycle for net primary production (NPP), plant C allocation, and decomposition of soil organic matter, but N and P have distinct pathways of inputs and losses. Current C-nutrient models exhibit large uncertainties in their estimates of pool sizes, fluxes, and turnover rates of nutrients, due to a lack of consistent global data for evaluating the models. In this study, we present a new model\u2013data fusion framework called the Global Observation-based Land-ecosystems Utilization Model of Carbon, Nitrogen and Phosphorus (GOLUM-CNP) that combines the CARbon DAta MOdel fraMework (CARDAMOM) data-constrained C-cycle analysis with spatially explicit data-driven estimates of N and P inputs and losses and with observed stoichiometric ratios. We calculated the steady-state N- and P-pool sizes and fluxes globally for large biomes. Our study showed that new N inputs from biological fixation and deposition supplied &gt;20\u2009% of total plant uptake in most forest ecosystems but accounted for smaller fractions in boreal forests and grasslands. New P inputs from atmospheric deposition and rock weathering supplied a much smaller fraction of total plant uptake than new N inputs, indicating the importance of internal P recycling within ecosystems to support plant growth. Nutrient-use efficiency, defined as the ratio of gross primary production (GPP) to plant nutrient uptake, were diagnosed from our model results and compared between biomes. Tropical forests had the lowest N-use efficiency and the highest P-use efficiency of the forest biomes. An analysis of sensitivity and uncertainty indicated that the NPP-allocation fractions to leaves, roots, and wood contributed the most to the uncertainties in the estimates of nutrient-use efficiencies. Correcting for biases in NPP-allocation fractions produced more plausible gradients of N- and P-use efficiencies from tropical to boreal ecosystems and highlighted the critical role of accurate measurements of C allocation for understanding the N and P cycles.                     </p></article>", "keywords": ["Atmospheric sciences", "550", "Organic chemistry", "Carbon Dynamics in Peatland Ecosystems", "Deposition (geology)", "01 natural sciences", "Nutrient cycle", "Agricultural and Biological Sciences", "Terrestrial ecosystem", "Biome", "Taiga", "2. Zero hunger", "QE1-996.5", "Ecology", "Primary production", "Nutrient Cycling", "Life Sciences", "Phosphorus", "Geology", "Carbon cycle", "Nitrogen Cycle", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "Chemistry", "Physical Sciences", "environment", "Ecosystem Functioning", "Biogeochemical Cycling of Nutrients in Aquatic Ecosystems", "Nitrogen", "Soil Science", "Environmental science", "Environmental Chemistry", "New production", "Soil Carbon Sequestration", "Biology", "Ecosystem", "0105 earth and related environmental sciences", "[SDU.OCEAN]Sciences of the Universe [physics]/Ocean", "Atmosphere", "[SDU.OCEAN] Sciences of the Universe [physics]/Ocean", " Atmosphere", "ddc:550", "Nitrogen Dynamics", "Paleontology", "FOS: Earth and related environmental sciences", "15. Life on land", "13. Climate action", "FOS: Biological sciences", "Environmental Science", "Phytoplankton", "Sediment", "[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces", "Soil Carbon Dynamics and Nutrient Cycling in Ecosystems", "Nutrient"]}, "links": [{"href": "https://gmd.copernicus.org/articles/11/3903/2018/gmd-11-3903-2018.pdf"}, {"href": "https://doi.org/21.11116/0000-0000-F096-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoscientific%20Model%20Development", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0000-F096-7", "name": "item", "description": "21.11116/0000-0000-F096-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0000-F096-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-03-22T00:00:00Z"}}, {"id": "21.11116/0000-0003-8627-A", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2019-02-26", "title": "Isolation of Individual Saturated Fatty Acid Methyl Esters Derived From Groundwater Phospholipids by Preparative High\u2010Pressure Liquid Chromatography for Compound\u2010Specific Radiocarbon Analyses", "description": "Abstract<p>Determining the biogeochemical pathways utilized by microbes living in groundwater is essential for understanding the subsurface C cycle and the fate of organic compounds, including pollutants. The radiocarbon signature (\uffce\uff9414C) of fatty acid methyl esters derived from microbial phospholipids (PLFA) provides useful information for differentiating microbial C sources and infering microbial metabolism. However, in subsurface environments, those analyses remain challenging. Here we present a method combining large volume groundwater filtration (up to 10,000\uffc2\uffa0L) and PLFA purification for subsequent compound\uffe2\uff80\uff90specific radiocarbon analyses. The analytical method involves conventional chemical extraction of PLFA followed by purification of individual compounds by semipreparative high\uffe2\uff80\uff90performance liquid chromatography. Different saturated PLFA in amounts of up to 10\uffc2\uffa0\uffce\uffbcg each can be simultaneously separated on a C18 high\uffe2\uff80\uff90load column using a mixture of MeOH/water and acetonitrile as the mobile phase. Our procedure introduced dead\uffe2\uff80\uff90Cext contaminations of 0.57\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.29 and 0.35\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.18\uffc2\uffa0\uffce\uffbcg for the high\uffe2\uff80\uff90performance liquid chromatography and combustion/graphitization steps of the sample preparation, respectively. However, tests on different high\uffe2\uff80\uff90performance liquid chromatography C18 columns revealed a large difference in dead Cext associated with column bleed. Modern Cext in the amount of 0.40\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.20\uffc2\uffa0\uffce\uffbcg was introduced by the combustion/graphitization step of the sample preparation, but other steps did not add modern Cext. The entire method recovered \uffe2\uff88\uffbc50% of the purified compounds on average, but this did not affect their 14C content. This method will allow routine analysis of the \uffce\uff9414C of PLFA isolated from groundwaters or other sample types, revealing the relationships between microbial and soil\uffe2\uff80\uff90derived C, sedimentary or dissolved C sources.</p", "keywords": ["13. Climate action", "0207 environmental engineering", "02 engineering and technology", "01 natural sciences", "6. Clean water", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018WR024076"}, {"href": "https://doi.org/21.11116/0000-0003-8627-A"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20Resources%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0003-8627-A", "name": "item", "description": "21.11116/0000-0003-8627-A", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0003-8627-A"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-03-01T00:00:00Z"}}, {"id": "21.11116/0000-0003-DA49-6", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2019-06-24", "title": "Mobilization of aged and biolabile soil carbon by tropical deforestation", "description": "In the mostly pristine Congo Basin, agricultural land-use change has intensified in recent years. One potential and understudied consequence of this deforestation and conversion to agriculture is the mobilization and loss of organic matter from soils to rivers as dissolved organic matter. Here, we quantify and characterize dissolved organic matter sampled from 19 catchments of varying deforestation extent near Lake Kivu over a two-week period during the wet season. Dissolved organic carbon from deforested, agriculturally-dominated catchments was older (14C age: ~1.5kyr) and more biolabile than from pristine forest catchments. Ultrahigh-resolution mass spectrometry revealed that this aged organic matter from deforested catchments was energy-rich and chemodiverse, with higher proportions of nitrogen- and sulfur-containing formulae. Given the molecular composition and biolability, we suggest that organic matter from deforested landscapes is preferentially respired upon disturbance, resulting in elevated in-stream concentrations of carbon dioxide. We estimate that while deforestation reduces the overall flux of dissolved organic carbon by ~56%, it does not significantly change the yield of biolabile dissolved organic carbon. Ultimately, the exposure of deeper soil horizons through deforestation and agricultural expansion releases old, previously stable, and biolabile soil organic carbon into the modern carbon cycle via the aquatic pathway.", "keywords": ["2. Zero hunger", "Life on Land", "04 agricultural and veterinary sciences", "15. Life on land", "dissolved organic carbon", "01 natural sciences", "Article", "6. Clean water", "soil organic carbon", "Congo", "13. Climate action", "deforestation", "Meteorology & Atmospheric Sciences", "0401 agriculture", " forestry", " and fisheries", "agriculture", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://www.nature.com/articles/s41561-019-0384-9.pdf"}, {"href": "https://escholarship.org/content/qt45n6x8tn/qt45n6x8tn.pdf"}, {"href": "https://doi.org/21.11116/0000-0003-DA49-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Geoscience", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0003-DA49-6", "name": "item", "description": "21.11116/0000-0003-DA49-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0003-DA49-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-24T00:00:00Z"}}, {"id": "21.11116/0000-0004-CA96-F", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2019-07-08", "title": "Winter's bite: beech trees survive complete defoliation due to spring late\u2010frost damage by mobilizing old C reserves", "description": "Summary<p>   <p>Late frost can destroy the photosynthetic apparatus of trees. We hypothesized that this can alter the normal cyclic dynamics of C\uffe2\uff80\uff90reserves in the wood.</p>  <p>We measured soluble sugar concentrations and radiocarbon signatures (\uffce\uff9414C) of soluble nonstructural carbon (NSC) in woody tissues sampled from a Mediterranean beech forest that was completely defoliated by an exceptional late frost in 2016. We used the bomb radiocarbon approach to estimate the time elapsed since fixation of mobilized soluble sugars.</p>  <p>During the leafless period after the frost event, soluble sugar concentrations declined sharply while \uffce\uff9414C of NSC increased. This can be explained by the lack of fresh assimilate supply and a mobilization of C from reserve pools. Soluble NSC became increasingly older during the leafless period, with a maximum average age of 5\uffc2\uffa0yr from samples collected 27\uffc2\uffa0d before canopy recovery. Following leaf re\uffe2\uff80\uff90growth, soluble sugar concentrations increased and \uffce\uff9414C of soluble NSC decreased, indicating the allocation of new assimilates to the stem soluble sugars pool.</p>  <p>These data highlight that beech trees rapidly mobilize reserve C to survive strong source\uffe2\uff80\uff93sink imbalances, for example due to late frost, and show that NSC is a key trait for tree resilience under global change.</p>  </p", "keywords": ["580", "0106 biological sciences", "570", "late-frost leaf damage", "Fagus sylvatica", "bomb-radiocarbon (C-14)", "nonstructural carbon", "bomb-radiocarbon (14C)", "15. Life on land", "01 natural sciences", "Carbon", "Plant Leaves", "Freezing", "Fagus", "extreme weather event", "Carbohydrate Metabolism", "Carbon Radioisotopes", "Seasons", "resilience"]}, "links": [{"href": "https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.16047"}, {"href": "https://doi.org/21.11116/0000-0004-CA96-F"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/New%20Phytologist", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0004-CA96-F", "name": "item", "description": "21.11116/0000-0004-CA96-F", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0004-CA96-F"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-27T00:00:00Z"}}, {"id": "21.11116/0000-0005-6624-0", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2019-12-19", "title": "Identifying and quantifying geogenic organic carbon in soils \u2013 the case of graphite", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. A widely overlooked source of carbon (C) in the soil environment is organic carbon (OC) of geogenic origin, e.g. graphite, occurring mostly in metamorphic rocks. Appropriate methods are not available to quantify graphite and to differentiate it from other organic and inorganic C sources in soils. This methodological shortcoming also complicates studies on OC in soils formed on graphite-containing bedrock because of the unknown contribution of a very different soil OC source. In this study, we examined Fourier-transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA) and the smart combustion method for their ability to identify and quantify graphitic C in soils. For this purpose, several artificial soil samples with graphite, CaCO3 and plant litter as the usual C components were created. A graphitic standard was mixed with pure quartz and a natural soil for calibration and validation of the methods over a graphitic C range of 0.1\u2009% to 4\u2009%. Furthermore, rock and soil material from a graphite-bearing schist and a schist without natural graphite were used for method validation. FTIR. As specific signal intensities of distinct graphite absorption bands were missing, calibration could only be performed on general effects of graphite contents on the energy transmitted through the samples. The use of samples from different mineral origins yielded significant matrix effects and hampered the prediction of geogenic graphite contents in soils. TGA. Thermogravimetric analysis, based on changes in mass loss due to differences in thermal stabilities, is suggested as a useful method for graphite identification, although (calcium) carbonate and graphitic C have a similar thermal stability. However, the quantitative estimation of the graphite contents was challenging as dehydroxylation (mass loss) of a wide range of soil minerals occurs in a similar temperature range. Smart combustion. The method is based on measuring the release of C during a combustion program, quantified by a non-dispersive infrared detector (NDIR) as part of a commercial elemental analyser, whereby carbonates and graphitic C could be separated by switching between oxic and anoxic conditions during thermal decomposition. Samples were heated to 400\u2009\u2218C under oxygen-rich conditions, after which further heating was done under anoxic conditions till 900\u2009\u2218C. The residual oxidizable carbon (ROC), hypothesized to be graphitic C, was measured by switching back to oxygenic conditions at 900\u2009\u2218C. Test samples showed promising results for quantifying graphitic C in soils. For the purpose of quantifying graphitic C content in soil samples, smart combustion was the most promising method of those which have been examined in this study. However, caution should be taken with carbonate-rich soils as increasing amounts of carbonate resulted in an underestimation of graphitic C content.</p></article>", "keywords": ["Environmental sciences", "QE1-996.5", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "GE1-350", "Geology", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water"]}, "links": [{"href": "https://soil.copernicus.org/articles/5/383/2019/soil-5-383-2019.pdf"}, {"href": "https://doi.org/21.11116/0000-0005-6624-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/SOIL", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0005-6624-0", "name": "item", "description": "21.11116/0000-0005-6624-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0005-6624-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-20T00:00:00Z"}}, {"id": "21.11116/0000-0005-7E8F-E", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2019-11-11", "title": "Contribution of Peatland Permafrost to Dissolved Organic Matter along a Thaw Gradient in North Siberia", "description": "Permafrost peatlands are important carbon stocks currently experiencing rapid evolution after permafrost thaw. Following thaw, dissolved organic matter (DOM) is a potentially important pathway for the release of permafrost carbon. This study investigates the origin and composition of DOM across sites at different stages of thaw in a discontinuous permafrost area of North Siberia. We determine the optical properties, molecular composition, and stable isotopic (\u03b413C) and radiocarbon (14C) contents of DOM. Early stages of thaw are characterized by high DOC concentrations, high aromaticity, contribution of vegetation-derived DOM, and a high contribution of permafrost carbon. In contrast, in later stages, the microbial contribution to DOM increases, and only modern carbon is detected. This work links DOM composition with its radiocarbon content in permafrost peatlands. It shows that DOM originating from previously frozen permafrost peatlands is highly aromatic and previously processed. It highlights the variability of post-thaw carbon dynamics in boreal and arctic ecosystems.", "keywords": ["570", "550", "Arctic Regions", "Permafrost", "15. Life on land", "GEOF", "01 natural sciences", "Panoply", "Carbon", "Siberia", "[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "13. Climate action", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "Ecosystem", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.9b03735"}, {"href": "https://doi.org/21.11116/0000-0005-7E8F-E"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%20%26amp%3B%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0005-7E8F-E", "name": "item", "description": "21.11116/0000-0005-7E8F-E", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0005-7E8F-E"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-11-11T00:00:00Z"}}, {"id": "21.11116/0000-0005-C54E-6", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Report", "created": "2020-03-09", "title": "Mathematical Reconstruction of Land Carbon Models From Their Numerical Output: Computing Soil Radiocarbon From 12C Dynamics", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>         &amp;lt;p&amp;gt;Radiocarbon (&amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;C) is a powerful tracer of the global carbon cycle that is commonly used to assess carbon cycling rates in various Earth system reservoirs and as a benchmark to assess model performance. Therefore, it has been recommended that Earth System Models (ESMs) participating in the Coupled Model Intercomparison Project Phase 6 report predicted radiocarbon values for relevant carbon pools. However, a detailed representation of radiocarbon dynamics may be an impractical burden on model developers. Here, we present an alternative approach to compute radiocarbon values from the numerical output of an ESM that does not explicitly represent these dynamics. The approach requires computed &amp;lt;sup&amp;gt;12&amp;lt;/sup&amp;gt;C stocks and fluxes among all carbon pools for a particular simulation of the model. From this output, a time&amp;amp;#8208;dependent linear compartmental system is computed with its respective state&amp;amp;#8208;transition matrix. Using transient atmospheric &amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;C values as inputs, the state&amp;amp;#8208;transition matrix is then applied to compute radiocarbon values for each pool, the average value for the entire system, and component fluxes. We demonstrate the approach with ELMv1&amp;amp;#8208;ECA, the land component of an ESM model that explicitly represents &amp;lt;sup&amp;gt;12&amp;lt;/sup&amp;gt;C, and &amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;C in 7 soil pools and 10 vertical layers. Results from our proposed method are highly accurate (relative error &amp;lt;0.01%) compared with the ELMv1&amp;amp;#8208;ECA &amp;lt;sup&amp;gt;12&amp;lt;/sup&amp;gt;C and &amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;C predictions, demonstrating the potential to use this approach in CMIP6 and other model simulations that do not explicitly represent &amp;lt;sup&amp;gt;14&amp;lt;/sup&amp;gt;C.&amp;lt;/p&amp;gt;         </p></article>", "keywords": ["Physical geography", "Earth system models", "GC1-1581", "dynamical systems", "15. Life on land", "Oceanography", "compartmental systems", "01 natural sciences", "GB3-5030", "13. Climate action", "radiocarbon", "model diagnostics", "carbon cycle models", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/21.11116/0000-0005-C54E-6"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0005-C54E-6", "name": "item", "description": "21.11116/0000-0005-C54E-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0005-C54E-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-23T00:00:00Z"}}, {"id": "21.11116/0000-0006-B42D-D", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2019-10-25", "title": "Decomposability of soil organic matter over time: The Soil Incubation Database (SIDb, version 1.0) and guidance for incubation procedures", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. The magnitude of carbon (C) loss to the atmosphere via microbial decomposition is a function of the amount of C stored in soils, the quality of the organic matter, and physical, chemical and biological factors that comprise the environment for decomposition. The decomposability of C is commonly assessed by laboratory soil incubation studies that measure greenhouse gases mineralized from soils under controlled conditions. Here, we introduce the Soil Incubation Database (SIDb) version 1.0, a compilation of time series data from incubations, structured into a new, publicly available database of C flux (carbon dioxide, CO2, or methane, CH4). In addition to open access, the SIDb project also provides a platform for the development of tools for reading and analysis of incubation data as well as documentation for future use and development. In addition to introducing SIDb, we provide reporting guidance for database entry and the required variables that incubation studies need at minimum to be included in SIDb. A key application of this synthesis effort is to better characterize soil C processes in Earth system models, which will in turn reduce our uncertainty in predicting the response of soil C decomposition to a changing climate. We demonstrate a framework to fit curves to a number of incubation studies from diverse ecosystems, depths, and organic matter content using a built-in model development module that integrates SIDb with the existing SoilR package to estimate soil C pools from time series data. The database will help bridge the gap between site-level measurements, which are commonly used in incubation studies, and global remote-sensed data or data products derived from models aimed at assessing global-scale rates of decomposition and C turnover. The SIDb, version 1.0, is archived and publicly available at DOI: https://doi.org/10.5281/zenodo.3470459 (Sierra et al., 2019) and the database is managed under a version-controlled system and centrally stored in GitHub (https://github.com/SoilBGC-Datashare/sidb).</p></article>", "keywords": ["Environmental sciences", "2. Zero hunger", "QE1-996.5", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "GE1-350", "Geology", "04 agricultural and veterinary sciences", "Biogeochemistry", "15. Life on land"]}, "links": [{"href": "https://essd.copernicus.org/articles/12/1511/2020/essd-12-1511-2020.pdf"}, {"href": "https://scholars.unh.edu/context/faculty_pubs/article/2717/viewcontent/73.pdf"}, {"href": "https://doi.org/21.11116/0000-0006-B42D-D"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Earth%20System%20Science%20Data", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0006-B42D-D", "name": "item", "description": "21.11116/0000-0006-B42D-D", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0006-B42D-D"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-10-25T00:00:00Z"}}, {"id": "21.11116/0000-0007-B312-A", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2020-12-17", "title": "The Role of Petrimonas mucosa ING2-E5AT in Mesophilic Biogas Reactor Systems as Deduced from Multiomics Analyses", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Members of the genera Proteiniphilum and Petrimonas were speculated to represent indicators reflecting process instability within anaerobic digestion (AD) microbiomes. Therefore, Petrimonas mucosa ING2-E5AT was isolated from a biogas reactor sample and sequenced on the PacBio RSII and Illumina MiSeq sequencers. Phylogenetic classification positioned the strain ING2-E5AT in close proximity to Fermentimonas and Proteiniphilum species (family Dysgonomonadaceae). ING2-E5AT encodes a number of genes for glycosyl-hydrolyses (GH) which are organized in Polysaccharide Utilization Loci (PUL) comprising tandem susCD-like genes for a TonB-dependent outer-membrane transporter and a cell surface glycan-binding protein. Different GHs encoded in PUL are involved in pectin degradation, reflecting a pronounced specialization of the ING2-E5AT PUL systems regarding the decomposition of this polysaccharide. Genes encoding enzymes participating in amino acids fermentation were also identified. Fragment recruitments with the ING2-E5AT genome as a template and publicly available metagenomes of AD microbiomes revealed that Petrimonas species are present in 146 out of 257 datasets supporting their importance in AD microbiomes. Metatranscriptome analyses of AD microbiomes uncovered active sugar and amino acid fermentation pathways for Petrimonas species. Likewise, screening of metaproteome datasets demonstrated expression of the Petrimonas PUL-specific component SusC providing further evidence that PUL play a central role for the lifestyle of Petrimonas species.</p></article>", "keywords": ["Bioconversion", "anaerobic digestion", "0301 basic medicine", "2. Zero hunger", "bioconversion", "Biomethanation", "QH301-705.5", "570 Biologie", "polysaccharide utilization loci", "metabolic pathway reconstruction", "16. Peace & justice", "7. Clean energy", "Article", "660.6", "biomethanation", "03 medical and health sciences", "Metabolic pathway reconstruction", "Polysaccharide utilization loci", "Anaerobic digestion", "carbohydrate-active enzymes", "Carbohydrate-active enzymes", "ddc:570", "Biology (General)"]}, "links": [{"href": "http://www.mdpi.com/2076-2607/8/12/2024/pdf"}, {"href": "https://www.mdpi.com/2076-2607/8/12/2024/pdf"}, {"href": "https://doi.org/21.11116/0000-0007-B312-A"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microorganisms", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0007-B312-A", "name": "item", "description": "21.11116/0000-0007-B312-A", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0007-B312-A"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-12-17T00:00:00Z"}}, {"id": "21.11116/0000-0008-CBD4-4", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:04Z", "type": "Journal Article", "created": "2021-07-01", "title": "The Reservoir Age Effect Varies With the Mobilization of Pre-Aged Organic Carbon in a High-Altitude Central Asian Catchment", "description": "<p>Lake sediments provide excellent archives to study past environmental and hydrological changes at high temporal resolution. However, their utility is often restricted by chronological uncertainties due to the \uffe2\uff80\uff9creservoir age effect\uffe2\uff80\uff9d (RAE), a phenomenon that results in anomalously old radiocarbon ages of total organic carbon (TOC) samples that is mainly attributed to the contribution of pre-aged carbon from aquatic organisms. Although the RAE is a well-known problem especially in high altitude lakes, detailed studies analyzing the temporal variations in the contribution of terrestrial and aquatic organic carbon (OC) on the RAE are scarce. This is partially due to the complexity of isolating individual compounds for subsequent compound-specific radiocarbon analysis (CSRA). We developed a rapid method for isolating individual short-chain (C16and C18) and long-chain (&amp;gt;C24) saturated fatty acid methyl esters (FAMEs) by using high-pressure liquid chromatography (HPLC). Our method introduces only minor contaminations (0.50 \uffc2\uffb1 0.22\uffc2\uffa0\uffc2\uffb5g dead carbon on average) and requires only few injections (\uffe2\uff89\uffa410), therefore offering clear advantages over traditional preparative gas chromatography (prep-GC). Here we show that radiocarbon values (\uffce\uff9414C) of long-chain FAs, which originate from terrestrial higher plant waxes, reflect carbon from a substantially pre-aged OC reservoir, whereas the \uffce\uff9414C of short-chain FAs that originate from aquatic sources were generally less pre-aged.14C ages obtained from the long-chain FAs are in closer agreement with14C ages of the corresponding bulk TOC fraction, indicating a high control of pre-aged terrestrial OC input from the catchment on TOC-derived14C ages. Variations in the age offset between terrestrial and aquatic biomarkers are related to changes in bulk sediment log(Ti/K) that reflect variations in detrital input from the catchment. Our results indicate that the chronological offset between terrestrial and aquatic OC in this high-altitude catchment is mainly driven by temporal variations in the mobilization of pre-aged OC from the catchment. In conclusion, to obtain accurate and process-specific lake sediment chronologies, attention must be given to the temporal dynamics of the RAE. Variations in the apparent ages of aquatic and terrestrial contributions to the sediment and their mass balance can substantially alter the reservoir age effect.</p", "keywords": ["550", "13. Climate action", "Science", "XRF", "Q", "leaf waxes", "reservoir age effect", "HPLC", "15. Life on land", "01 natural sciences", "compound-specific radiocarbon analysis", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Natalie Schroeter, Jens Mingram, Julia Kalanke, Stefan Lauterbach, Stefan Lauterbach, Rik Tjallingii, Val\u00e9rie F. Schwab, Gerd Gleixner,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/21.11116/0000-0008-CBD4-4"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Frontiers%20in%20Earth%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0008-CBD4-4", "name": "item", "description": "21.11116/0000-0008-CBD4-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0008-CBD4-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-07-01T00:00:00Z"}}, {"id": "21.11116/0000-000A-E334-B", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:04Z", "type": "Journal Article", "created": "2022-08-17", "title": "Lowering water table reduces carbon sink strength and carbon stocks in northern peatlands", "description": "Abstract<p>Peatlands at high latitudes have accumulated &gt;400\uffe2\uff80\uff89Pg carbon (C) because saturated soil and cold temperatures suppress C decomposition. This substantial amount of C in Arctic and Boreal peatlands is potentially subject to increased decomposition if the water table (WT) decreases due to climate change, including permafrost thaw\uffe2\uff80\uff90related drying. Here, we optimize a version of the Organizing Carbon and Hydrology In Dynamic Ecosystems model (ORCHIDEE\uffe2\uff80\uff90PCH4) using site\uffe2\uff80\uff90specific observations to investigate changes in CO2 and CH4 fluxes as well as C stock responses to an experimentally manipulated decrease of WT at six northern peatlands. The unmanipulated control peatlands, with the WT &lt;20\uffe2\uff80\uff89cm on average (seasonal max up to 45\uffe2\uff80\uff89cm) below the surface, currently act as C sinks in most years (58\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff8934\uffe2\uff80\uff89g C\uffe2\uff80\uff89m\uffe2\uff88\uff922\uffc2\uffa0year\uffe2\uff88\uff921; including 6\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff897\uffe2\uff80\uff89g C\uffe2\uff80\uff93CH4 m\uffe2\uff88\uff922\uffc2\uffa0year\uffe2\uff88\uff921 emission). We found, however, that lowering the WT by 10\uffe2\uff80\uff89cm reduced the CO2 sink by 13\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff8915\uffe2\uff80\uff89g\uffe2\uff80\uff89C\uffe2\uff80\uff89m\uffe2\uff88\uff922\uffc2\uffa0year\uffe2\uff88\uff921 and decreased CH4 emission by 4\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff894\uffe2\uff80\uff89g CH4 m\uffe2\uff88\uff922\uffc2\uffa0year\uffe2\uff88\uff921, thus accumulating less C over 100\uffe2\uff80\uff89years (0.2\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff890.2\uffe2\uff80\uff89kg\uffe2\uff80\uff89C\uffe2\uff80\uff89m\uffe2\uff88\uff922). Yet, the reduced emission of CH4, which has a larger greenhouse warming potential, resulted in a net decrease in greenhouse gas balance by 310\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff89360\uffe2\uff80\uff89g\uffe2\uff80\uff89CO2\uffe2\uff80\uff90eq\uffc2\uffa0m\uffe2\uff88\uff922\uffc2\uffa0year\uffe2\uff88\uff921. Peatlands with the initial WT close to the soil surface were more vulnerable to C loss: Non\uffe2\uff80\uff90permafrost peatlands lost &gt;2\uffe2\uff80\uff89kg\uffe2\uff80\uff89C\uffe2\uff80\uff89m\uffe2\uff88\uff922 over 100\uffe2\uff80\uff89years when WT is lowered by 50\uffe2\uff80\uff89cm, while permafrost peatlands temporally switched from C sinks to sources. These results highlight that reductions in C storage capacity in response to drying of northern peatlands are offset in part by reduced CH4 emissions, thus slightly reducing the positive carbon climate feedbacks of peatlands under a warmer and drier future climate scenario.</p", "keywords": ["570", "Carbon Sequestration", "permafrost thaw", "land surface model", "551", "01 natural sciences", "manipulation experiment", "Greenhouse Gases", "Soil", "Groundwater", "Research Articles", "Ecosystem", "0105 earth and related environmental sciences", "[SDU.OCEAN]Sciences of the Universe [physics]/Ocean", "Atmosphere", "[SDU.OCEAN] Sciences of the Universe [physics]/Ocean", " Atmosphere", "carbon stock", "high latitude", "Carbon Dioxide", "15. Life on land", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "Carbon", "carbon flux", "13. Climate action", "[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces", "environment", "Methane", "drainage"]}, "links": [{"href": "https://eprints.whiterose.ac.uk/190653/1/Global%20Change%20Biology%20-%202022%20-%20Kwon%20-%20Lowering%20water%20table%20reduces%20carbon%20sink%20strength%20and%20carbon%20stocks%20in%20northern.pdf"}, {"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16394"}, {"href": "https://doi.org/21.11116/0000-000A-E334-B"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-000A-E334-B", "name": "item", "description": "21.11116/0000-000A-E334-B", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-000A-E334-B"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-08-30T00:00:00Z"}}, {"id": "21.11116/0000-0006-8251-B", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2020-06-05", "title": "An international laboratory comparison of dissolved organic matter composition by high resolution mass spectrometry: Are we getting the same answer?", "description": "Abstract<p>High\uffe2\uff80\uff90resolution mass spectrometry (HRMS) has become a vital tool for dissolved organic matter (DOM) characterization. The upward trend in HRMS analysis of DOM presents challenges in data comparison and interpretation among laboratories operating instruments with differing performance and user operating conditions. It is therefore essential that the community establishes metric ranges and compositional trends for data comparison with reference samples so that data can be robustly compared among research groups. To this end, four identically prepared DOM samples were each measured by 16 laboratories, using 17 commercially purchased instruments, using positive\uffe2\uff80\uff90ion and negative\uffe2\uff80\uff90ion mode electrospray ionization (ESI) HRMS analyses. The instruments identified ~1000 common ions in both negative\uffe2\uff80\uff90 and positive\uffe2\uff80\uff90ion modes over a wide range of m/z values and chemical space, as determined by van Krevelen diagrams. Calculated metrics of abundance\uffe2\uff80\uff90weighted average indices (H/C, O/C, aromaticity, and m/z) of the commonly detected ions showed that hydrogen saturation and aromaticity were consistent for each reference sample across the instruments, while average mass and oxygenation were more affected by differences in instrument type and settings. In this paper we present 32 metric values for future benchmarking. The metric values were obtained for the four different parameters from four samples in two ionization modes and can be used in future work to evaluate the performance of HRMS instruments.</p", "keywords": ["STRUCTURAL-CHARACTERIZATION", "ELECTROSPRAY-IONIZATION", "PONY LAKE", "550", "FTICR-MS", "Characterization", "Pony lake", "Marine Biology", "Oceanografi", " hydrologi och vattenresurser", "01 natural sciences", "Electrospray ionization", "River sediments", "Oceanography", " Hydrology and Water Resources", "Compostos org\u00e0nics", "[CHIM] Chemical Sciences", "Organic compounds", "RIVER", "Atmospheric pressure photoionization", "[CHIM]Chemical Sciences", "MOLECULAR CHARACTERIZATION", "0105 earth and related environmental sciences", "River", "Marine", "Fulvic acids", "Sediments fluvials", "Molecular", "ESI-MS", "Oceanography and Atmospheric Sciences and Meteorology", "Structural characterization", "620", "0104 chemical sciences", "FULVIC-ACIDS", "13. Climate action", "ATMOSPHERIC-PRESSURE PHOTOIONIZATION", "MARINE", "Fresh Water Studies"]}, "links": [{"href": "https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lom3.10364"}, {"href": "https://digitalcommons.odu.edu/context/chemistry_fac_pubs/article/1185/viewcontent/Hatcher_2020_AnInternationalLaboratoryComparisonofDissolvedOCR.pdf"}, {"href": "https://doi.org/21.11116/0000-0006-8251-B"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Limnology%20and%20Oceanography%3A%20Methods", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0006-8251-B", "name": "item", "description": "21.11116/0000-0006-8251-B", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0006-8251-B"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-06-01T00:00:00Z"}}, {"id": "21.11116/0000-0006-C73B-8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:03Z", "type": "Journal Article", "created": "2020-07-27", "title": "Persistence of soil organic carbon caused by functional complexity", "description": "Soil organic carbon management has the potential to aid climate change mitigation through drawdown of atmospheric carbon dioxide. To be effective, such management must account for processes influencing carbon storage and re-emission at different space and time scales. Achieving this requires a conceptual advance in our understanding to link carbon dynamics from the scales at which processes occur to the scales at which decisions are made. Here, we propose that soil carbon persistence can be understood through the lens of decomposers as a result of functional complexity derived from the interplay between spatial and temporal variation of molecular diversity and composition. For example, co-location alone can determine whether a molecule is decomposed, with rapid changes in moisture leading to transport of organic matter and constraining the fitness of the microbial community, while greater molecular diversity may increase the metabolic demand of, and thus potentially limit, decomposition. This conceptual shift accounts for emergent behaviour of the microbial community and would enable soil carbon changes to be predicted without invoking recalcitrant carbon forms that have not been observed experimentally. Functional complexity as a driver of soil carbon persistence suggests soil management should be based on constant care rather than one-time action to lock away carbon in soils.", "keywords": ["[SDE] Environmental Sciences", "DECOMPOSITION", "2. Zero hunger", "106022 Mikrobiologie", "[SDE.MCG]Environmental Sciences/Global Changes", "UNCERTAINTY", "04 agricultural and veterinary sciences", "INPUTS", "15. Life on land", "TRANSPORT", "MODEL", "[SDE.MCG] Environmental Sciences/Global Changes", "106026 \u00d6kosystemforschung", "13. Climate action", "SDG 13 \u2013 Ma\u00dfnahmen zum Klimaschutz", "[SDE]Environmental Sciences", "SDG 13 - Climate Action", "Meteorology & Atmospheric Sciences", "106022 Microbiology", "GROWTH", "0401 agriculture", " forestry", " and fisheries", "TURNOVER", "PLANT", "106026 Ecosystem research", "MATTER"]}, "links": [{"href": "http://www.nature.com/articles/s41561-020-0612-3.pdf"}, {"href": "https://escholarship.org/content/qt84n3398c/qt84n3398c.pdf"}, {"href": "https://doi.org/21.11116/0000-0006-C73B-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Geoscience", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0006-C73B-8", "name": "item", "description": "21.11116/0000-0006-C73B-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0006-C73B-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-07-27T00:00:00Z"}}, {"id": "21.11116/0000-0007-B413-8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:04Z", "type": "Journal Article", "created": "2020-06-29", "title": "The age distribution of global soil carbon inferred from radiocarbon measurements", "description": "Soils contain more carbon than the atmosphere and vegetation combined. An increased flow of carbon from the atmosphere into soil pools could help mitigate anthropogenic emissions of carbon dioxide and climate change. Yet we do not know how quickly soils might respond because the age distribution of soil carbon is uncertain. Here we used 789 radiocarbon (\u220614C) profiles, along with other geospatial information, to create globally gridded datasets of mineral soil \u220614C and mean age. We found that soil depth is a primary driver of \u220614C, whereas climate (for example, mean annual temperature) is a major control on the spatial pattern of \u220614C in surface soil. Integrated to a depth of 1\u2009m, global soil carbon has a mean age of 4,830\u2009\u00b1\u20091,730\u2009yr, with older carbon in deeper layers and permafrost regions. In contrast, vertically resolved land models simulate \u220614C values that imply younger carbon ages and a more rapid carbon turnover. Our data-derived estimates of older mean soil carbon age suggest that soils will accumulate less carbon than predicted by current Earth system models over the twenty-first century. Reconciling these models with the global distribution of soil radiocarbon will require a better representation of the mechanisms that control carbon persistence in soils. Soils may accumulate less carbon and with a slower turnover than Earth system models predict, according to analysis of the age distribution of global soil carbon, which finds that the mean age of soil carbon is older than that in simulated in models.", "keywords": ["0301 basic medicine", "15. Life on land", "01 natural sciences", "Physical Geography and Environmental Geoscience", "Meteorology & Atmospheric Sciences (science-metrix)", "Climate Action", "03 medical and health sciences", "37 Earth Sciences (for-2020)", "3709 Physical Geography and Environmental Geoscience (for-2020)", "13. Climate action", "Earth Sciences", "Meteorology & Atmospheric Sciences", "13 Climate Action (sdg)", "3709 Physical geography and environmental geoscience (for-2020)", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://www.nature.com/articles/s41561-020-0596-z.pdf"}, {"href": "https://escholarship.org/content/qt2738s2mj/qt2738s2mj.pdf"}, {"href": "https://doi.org/21.11116/0000-0007-B413-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Geoscience", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0007-B413-8", "name": "item", "description": "21.11116/0000-0007-B413-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0007-B413-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-06-29T00:00:00Z"}}, {"id": "21.11116/0000-0008-DFA2-6", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:26:04Z", "type": "Journal Article", "created": "2021-07-07", "title": "Indicative Marker Microbiome Structures Deduced from the Taxonomic Inventory of 67 Full-Scale Anaerobic Digesters of 49 Agricultural Biogas Plants", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>There are almost 9500 biogas plants in Germany, which are predominantly operated with energy crops and residues from livestock husbandry over the last two decades. In the future, biogas plants must be enabled to use a much broader range of input materials in a flexible and demand-oriented manner. Hence, the microbial communities will be exposed to frequently varying process conditions, while an overall stable process must be ensured. To accompany this transition, there is the need to better understand how biogas microbiomes respond to management measures and how these responses affect the process efficiency. Therefore, 67 microbiomes originating from 49 agricultural, full-scale biogas plants were taxonomically investigated by 16S rRNA gene amplicon sequencing. These microbiomes were separated into three distinct clusters and one group of outliers, which are characterized by a specific distribution of 253 indicative taxa and their relative abundances. These indicative taxa seem to be adapted to specific process conditions which result from a different biogas plant operation. Based on these results, it seems to be possible to deduce/assess the general process condition of a biogas digester based solely on the microbiome structure, in particular on the distribution of specific indicative taxa, and without knowing the corresponding operational and chemical process parameters. Perspectively, this could allow the development of detection systems and advanced process models considering the microbial diversity.</p></article>", "keywords": ["580", "anaerobic digestion", "2. Zero hunger", "0301 basic medicine", "NMDS", "0303 health sciences", "QH301-705.5", "biogas microbiome", "Pearson correlations", "7. Clean energy", "Article", "6. Clean water", "660.6", "03 medical and health sciences", "13. Climate action", "indicative taxa", "taxonomic profiling", "Biology (General)", "16S rRNA gene amplicon sequencing"]}, "links": [{"href": "http://www.mdpi.com/2076-2607/9/7/1457/pdf"}, {"href": "https://www.mdpi.com/2076-2607/9/7/1457/pdf"}, {"href": "https://doi.org/21.11116/0000-0008-DFA2-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microorganisms", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "21.11116/0000-0008-DFA2-6", "name": "item", "description": "21.11116/0000-0008-DFA2-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/21.11116/0000-0008-DFA2-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-07-07T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=TA&offset=8300&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=TA&offset=8300&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "prev", "title": "items (prev)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=TA&offset=8250", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=TA&offset=8350", "hreflang": "en-US"}], "numberMatched": 14492, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-04-05T07:18:46.914797Z"}