{"type": "FeatureCollection", "features": [{"id": "10.1016/j.geoderma.2012.01.038", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:16:10Z", "type": "Journal Article", "created": "2012-03-11", "title": "Land Degradation Impact On Soil Carbon Losses Through Water Erosion And Co2 Emissions", "description": "Abstract   Worldwide concerns with global change and its effects on our future environment require an improved understanding of the impact of land cover changes on the global C cycle. Overgrazing causes a reduction in plant cover with accepted consequences on soil infiltration and soil erosion, yet the impact on the loss of soil organic carbon (SOC) and its associated processes remain unaccounted for. In this study performed in South Africa, our main objective was to evaluate the impact of plant cover reduction on (i) SOC erosion by water in both particulate (POC) and dissolved (DOC) forms, and (ii) soil CO 2  emissions to the atmosphere. The study performed under sandy-loam Acrisols investigated three proportions of soil surface coverage by plants (Cov), from 100% (Cov100) for the \u201cnon-degraded\u201d treatment to 25\u201350% (Cov50) and 0\u20135% (Cov5). POC and DOC losses were evaluated using an artificial rainfall of 30\u00a0mm\u00a0h \u2212\u00a01  applied for a period of 30\u00a0min on bounded 1\u00a0\u00d7\u00a01\u00a0m\u00b2 microplots (n\u00a0=\u00a03 per treatment). CO 2  emissions from undisturbed soil samples (n\u00a0=\u00a09) were evaluated continuously at the laboratory over a 6-month period. At the \u201cnon-degraded\u201d treatment of Cov100, plant-C inputs to the soil profile were 1950\u00a0\u00b1\u00a0180\u00a0gC\u00a0m \u2212\u00a02 \u00a0y \u2212\u00a01  and SOC stocks in the 0\u20130.02\u00a0m layer were 300.6\u00a0\u00b1\u00a016.2\u00a0gC\u00a0m \u2212\u00a02 . While soil-C inputs by plants significantly (P\u00a0 \u2212\u00a02  at Cov100 increased from 66% at Cov50 (i.e. 3.76\u00a0\u00b1\u00a01.8\u00a0gC\u00a0m \u2212\u00a02 ) to a staggering 213% at Cov5 (i.e. 7.08\u00a0\u00b1\u00a02.9\u00a0gC\u00a0m \u2212\u00a02 ). These losses were for the most part in particulate form (from 88.0% for Cov100 to 98.7% for Cov5). Plant cover reduction significantly decreased both the cumulative C\u2013CO 2  emissions (by 68% at Cov50 and 69% at Cov5) and the mineralization rate of the soil organic matter (from 0.039 gC\u2013CO 2 \u00a0gC \u2212\u00a01  at Cov100 to 0.031\u00a0gC\u2013CO 2 \u00a0gC \u2212\u00a01  at Cov5). These results are expected to increase our understanding of the impact of land degradation on the global C cycle. Further in-situ research studies, however, need to investigate whether or not grassland degradation induces net C-emissions to the atmosphere.", "keywords": ["2. Zero hunger", "550", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "12. Responsible consumption", "South Africa", "13. Climate action", "Particulate and dissolved SOC forms", "0401 agriculture", " forestry", " and fisheries", "Global C Cycle", "Water erosion", "Land use change"], "contacts": [{"organization": "McHunu, C., /Chaplot, Vincent,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.geoderma.2012.01.038"}, {"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": "10.1016/j.geoderma.2012.01.038", "name": "item", "description": "10.1016/j.geoderma.2012.01.038", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.geoderma.2012.01.038"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-05-01T00:00:00Z"}}, {"id": "10.1007/s004420100656", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:14:26Z", "type": "Journal Article", "created": "2003-02-13", "title": "Fine-Root Biomass And Fluxes Of Soil Carbon In Young Stands Of Paper Birch And Trembling Aspen As Affected By Elevated Atmospheric Co2 And Tropospheric O3", "description": "Rising atmospheric CO2 may stimulate future forest productivity, possibly increasing carbon storage in terrestrial ecosystems, but how tropospheric ozone will modify this response is unknown. Because of the importance of fine roots to the belowground C cycle, we monitored fine-root biomass and associated C fluxes in regenerating stands of trembling aspen, and mixed stands of trembling aspen and paper birch at FACTS-II, the Aspen FACE project in Rhinelander, Wisconsin. Free-air CO2 enrichment (FACE) was used to elevate concentrations of CO2 (average enrichment concentration 535\u00a0\u00b5l l-1) and O3 (53\u00a0nl l-1) in developing forest stands in 1998 and 1999. Soil respiration, soil pCO2, and dissolved organic carbon in soil solution (DOC) were monitored biweekly. Soil respiration was measured with a portable infrared gas analyzer. Soil pCO2 and DOC samples were collected from soil gas wells and tension lysimeters, respectively, at depths of 15, 30, and 125\u00a0cm. Fine-root biomass averaged 263\u00a0g m-2 in control plots and increased 96% under elevated CO2. The increased root biomass was accompanied by a 39% increase in soil respiration and a 27% increase in soil pCO2. Both soil respiration and pCO2 exhibited a strong seasonal signal, which was positively correlated with soil temperature. DOC concentrations in soil solution averaged ~12\u00a0mg l-1 in surface horizons, declined with depth, and were little affected by the treatments. A simplified belowground C budget for the site indicated that native soil organic matter still dominated the system, and that soil respiration was by far the largest flux. Ozone decreased the above responses to elevated CO2, but effects were rarely statistically significant. We conclude that regenerating stands of northern hardwoods have the potential for substantially greater C input to soil due to greater fine-root production under elevated CO2. Greater fine-root biomass will be accompanied by greater soil C efflux as soil respiration, but leaching losses of C will probably be unaffected.", "keywords": ["0106 biological sciences", "Ecology and Evolutionary Biology", "Aspen-FACE-project", "root-", "USA-", "pollutants-", "Environmental-Sciences)", "tropospheric-ozone", "forest-productivity", "01 natural sciences", "biomass-", "northern-forests", "124-38-9: CARBON DIOXIDE", "soil-carbon-flux", "terrestrial-ecosystems", "populus-tremuloides", "Cellular and Developmental Biology", "soil-carbon", "7440-44-0: CARBON", "carbon-", "fine-root", "Bioenergetics- (Biochemistry-and-Molecular-Biophysics)", "Natural Resources and Environment", "04 agricultural and veterinary sciences", "GLOBAL-ECOLOGY", "North-America", "Nearctic-region)", "Rhinelander- (Wisconsin-", "carbon-sequestration", "atmosphere-", "biomass-production", "dissolved-organic-carbon [DOC-]", "Science", "respiration-", "carbon-dioxide-enrichment", "forest-plantations", "carbon-dioxide", "carbon-storage", "fine-root-biomass", "belowground-biomass", "United-States-Wisconsin-Rhinelander", "carbon-cycle", "Health Sciences", "ozone-", "soil-respiration", "air-pollution", "global-change", "atmospheric-carbon-dioxide", "biomass", "Molecular", "15. Life on land", "ozone", "13. Climate action", "roots-", "Legacy", "Terrestrial-Ecology (Ecology-", "free-air-carbon-dioxide-enrichment [FREE-]: experimental-method", "0401 agriculture", " forestry", " and fisheries", "Northern Forests Global Change Carbon Sequestration Soil Respiration Dissolved Organic Carbon Soil PCO2"]}, "links": [{"href": "https://doi.org/10.1007/s004420100656"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oecologia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s004420100656", "name": "item", "description": "10.1007/s004420100656", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s004420100656"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2001-07-01T00:00:00Z"}}, {"id": "10.1016/j.ecolind.2018.12.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:15:42Z", "type": "Journal Article", "created": "2018-12-12", "title": "Sensitivity of labile carbon fractions to tillage and organic matter management and their potential as comprehensive soil quality indicators across pedoclimatic conditions in Europe", "description": "Abstract   Soil quality is defined as the capacity of the soil to perform multiple functions, and can be assessed by measuring soil chemical, physical and biological parameters. Among soil parameters, labile organic carbon is considered to have a primary role in many soil functions related to productivity and environmental resilience. Our study aimed at assessing the suitability of different labile carbon fractions, namely dissolved organic carbon (DOC), hydrophilic DOC (Hy-DOC), permanganate oxidizable carbon (POXC, also referred to as Active Carbon), hot water extractable carbon (HWEC) and particulate organic matter carbon (POMC) as soil quality indicators in agricultural systems. To do so, we tested their sensitivity to two agricultural management factors (tillage and organic matter input) in 10 European long-term field experiments (LTEs), and we assessed the correlation of the different labile carbon fractions with physical, chemical and biological soil quality indicators linked to soil functions. We found that reduced tillage and high organic matter input increase concentrations of labile carbon fractions in soil compared to conventional tillage and low organic matter addition, respectively. POXC and POMC were the most sensitive fractions to both tillage and fertilization across the 10 European LTEs. In addition, POXC was the labile carbon fraction most positively correlated with soil chemical (total organic carbon, total nitrogen, and cation exchange capacity), physical (water stable aggregates, water holding capacity, bulk density) and biological soil quality indicators (microbial biomass carbon and nitrogen, and soil respiration).  We conclude that POXC represents a labile carbon fraction sensitive to soil management and that is the most informative about total soil organic matter, nutrients, soil structure, and microbial pools and activity, parameters commonly used as indicators of various soil functions, such as C sequestration, nutrient cycling, soil structure formation and soil as a habitat for biodiversity. Moreover, POXC measurement is relatively cheap, fast and easy. Therefore, we suggest measuring POXC as the labile carbon fraction in soil quality assessment schemes in addition to other valuable soil quality indicators.", "keywords": ["2. Zero hunger", "Hydrophilic dissolved organic carbon (Hy-DOC)", "Permanganate oxidizable carbon (POXC)", "04 agricultural and veterinary sciences", "15. Life on land", "Air and water emissions", "Particulate organic matter carbon (POMC)", "Soil quality", "Soil tillage", "Dissolved organic carbon (DOC)", "13. Climate action", "Biodiversity and ecosystem services", "Long-term experimental field (LTEs)", "Hot water extractable carbon (HWEC)", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1016/j.ecolind.2018.12.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Indicators", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.ecolind.2018.12.008", "name": "item", "description": "10.1016/j.ecolind.2018.12.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.ecolind.2018.12.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-04-01T00:00:00Z"}}, {"id": "10.1594/pangaea.902194", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:19:37Z", "type": "Dataset", "title": "Silicon isotopes in Arctic and sub-Arctic glacial meltwaters", "description": "Open AccessSupplement to: Hatton, Jade Elizabeth; Hendry, Katharine R; Hawkings, Jonathan; Wadham, Jemma; Opfergelt, Sophie; Kohler, Tyler; Yde, Jacob; Stibal, Marek; \u017d\u00e1rsk\u00fd, Jakub (2019): Silicon isotopes in Arctic and sub-Arctic glacial meltwaters: the role of the subglacial weathering in the silicon cycle. Proceedings of the Royal Society A-Mathematical Physical and Engineering Sciences, 475(2228)", "keywords": ["Silicon", "water", "Isotope CYcling in the LABrador Sea (ICY-LAB)", "silicon particulate amorphous", "electrical", "Chloride", "Chloride anion", "Sodium cation", "Temperature", " water", "Sulfate anion", "Silicon", " particulate amorphous", "particulate amorphous", "silicon dissolved", "DATE TIME", "Bicarbonate ion", "Magnesium", "Isotope CYcling in the LABrador Sea ICY LAB", "Glacier", "Fluoride", "LONGITUDE", "Ratio", "Calcium cation", "Conductivity", "Potassium cation", "pH", "Multiple investigations", "Sodium", "Temperature", "Suspended particulate matter", "\u03b430Si", "\u03b430Si", " silicon dissolved", "Conductivity", " electrical", "Sulfate", "Bicarbonate", "DATE/TIME", "13. Climate action", "Earth System Research", "LATITUDE", "Potassium", "Calcium", "\u03b430Si", " silicon particulate amorphous", "Magnesium cation"], "contacts": [{"organization": "Hatton, Jade Elizabeth, Hendry, Katharine R, Hawkings, Jonathan, Wadham, Jemma, Opfergelt, Sophie, Kohler, Tyler, Yde, Jacob, Stibal, Marek, \u017d\u00e1rsk\u00fd, Jakub,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1594/pangaea.902194"}, {"rel": "self", "type": "application/geo+json", "title": "10.1594/pangaea.902194", "name": "item", "description": "10.1594/pangaea.902194", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1594/pangaea.902194"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"id": "10.1594/pangaea.963212", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:19:37Z", "type": "Dataset", "title": "Stream water chemistry and landscape characteristics in Zackenberg Valley, NE Greenland summer 2021", "description": "The data contains water chemistry and spectral catchment NDVI for 14 streams in Zackenberg Valley in Northeast Greenland, sampled summer 2021 from 10th July to 15th September. We collected water samples for measuring water chemistry, and we determined landscape parameters using GIS based tools. The data was collected at three sampling periods in summer 2021 in the Zackenberg Research Station (74\u00b028'N, 20\u00b034'W). The area has a polar tundra climate with mean annual air temperature of -9.1 \u00b0C. Water chemistry (i.e. dissolved and particulate nitrogen, phosphorus, carbon; dissolved iron and silicate) and catchment characteristics (i.e. catchment area, altitude, slope, aspect, NDVI, snow cover) was measured for each of the 14 stream sites. Water chemistry samples were collected and analyzed using standard methods, and landscape characteristics were determined using GIS resources. The data was collected in order to study relationships between landscape characteristics and stream water chemistry. The water samples were collected by a team of two people, and the detailed methods are given below.", "keywords": ["inorganic", "median", "Nitrate Nitrogen", "Nitrogen", " inorganic", " dissolved/Nitrogen", " total dissolved ratio", "Nitrate", "Normalized Difference Vegetation Index", "Latitude of event", "Inductively Coupled Plasma Mass Spectrometry ICP MS", "Arctic", "Temperature", " water", "WTW", "Total organic carbon analyzer TOC VCPH TNM 1", "Total organic carbon analyzer (TOC-VCPH/TNM-1)", " Shimadzu", "Calculated", "dissolved ratio", "Nitrate/Nitrogen", " inorganic", " dissolved ratio", "total dissolved ratio", "Multiple investigations", "Temperature", "Nitrogen", " total dissolved", "Month", "dissolved", "specific", "streams", "6. Clean water", "Nitrogen", " inorganic", " dissolved", "Chemistry", "Inductively Coupled Plasma - Mass Spectrometry (ICP-MS)", " PerkinElmer Instruments", " Optima 2000 DV", "Sum cations", "Natural Sciences", "Ammonium", "Potassium Silicon ratio", "Calcium Magnesium ratio", "Conductivity Meter", " WTW", " ProfiLine Cond 3110", "Longitude of event", "Silicon", "Lachat QuickChem 8500 flow injection autoanalyser", "Nitrogen", "organic", "water chemistry", "Iron", "Calcium/Magnesium ratio", "water", "Site", "Nitrate/Ammonium ratio", "Aspect", "Normalized Differenced Vegetation Index", " median", "Ammonium Nitrogen", "Normalized Differenced Vegetation Index", "Catchment area", "Slope", "PerkinElmer Instruments", "ProfiLine Cond 3110", "Shimadzu", "Date/Time of event", "Conductivity Meter", "Nitrate Ammonium ratio", "total dissolved", "Conductivity", "Event label", "Date Time of event", "Nitrogen", " inorganic", " dissolved/Nitrogen", " organic", " dissolved ratio", "15. Life on land", "Carbon", " organic", " dissolved", "dissolved Nitrogen", "Elevation of event", "Carbon", "rivers", "Snow coverage", "Greening", "Potassium/Silicon ratio", "Optima 2000 DV", "Nitrogen", " organic", " dissolved", "13. Climate action", "Discharge", "Conductivity", " specific", "Ammonium/Nitrogen", " inorganic", " dissolved ratio"], "contacts": [{"organization": "Riis, Tenna, Tank, Jennifer, Holmboe, Cecilie Marie Hartvig, Gim\u00e9nez-Grau, Pau, Mastepanov, Mikhail, Catalan, Nuria, Stott, David, Hansen, Birgitte, Kristiansen, S\u00f8ren M, Pastor, Ada,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1594/pangaea.963212"}, {"rel": "self", "type": "application/geo+json", "title": "10.1594/pangaea.963212", "name": "item", "description": "10.1594/pangaea.963212", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1594/pangaea.963212"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-01-01T00:00:00Z"}}, {"id": "10.5194/bg-16-1305-2019", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:21:38Z", "type": "Journal Article", "created": "2018-04-26", "title": "Distribution of Fe isotopes in particles and colloids in the salinity gradient along the Lena River plume, Laptev Sea", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. Riverine Fe input is the primary Fe source to the ocean. This study is focused on the distribution of Fe along the Lena River freshwater plume in the Laptev Sea using samples from a 600\u2009km long transect in front of the Lena River mouth. Separation of the particulate (&gt;\u20090.22\u2009\u00b5m), colloidal (0.22\u2009\u00b5m\u20131\u2009kDa), and truly dissolved (\u200999\u2009% of particulate Fe and about 90\u2009% of the colloidal Fe was observed across the shelf, while the truly dissolved phase was almost constant across the Laptev Sea. Thus, the truly dissolved Fe could be an important source of bioavailable Fe for plankton in the central Arctic Ocean, together with the colloidal Fe. Fe-isotope analysis showed that the particulate phase and the sediment below the Lena River freshwater plume had negative \u03b456Fe values (relative to IRMM-14). The colloidal Fe phase showed negative \u03b456Fe values close to the river mouth (about \u22120.20\u2009\u2030) and positive \u03b456Fe values in the outermost stations (about +0.10\u2009\u2030).  We suggest that the shelf zone acts as a sink for Fe particles and colloids with negative \u03b456Fe values, representing chemically reactive ferrihydrites. While the positive \u03b456Fe values of the colloidal phase within the outer Lena River freshwater plume, might represent Fe-oxyhydroxides, which remain in the water column, and will be the predominant \u03b456Fe composition in the Arctic Ocean.</p></article>", "keywords": ["particles", "QE1-996.5", "Ecology", "truly dissolved iron", "Geology", "Geokemi", "Lena River Plume", "iron isotopes", "01 natural sciences", "estuarine mixing", "6. Clean water", "Geovetenskap och relaterad milj\u00f6vetenskap", "Geochemistry", "iron particles", "Life", "colloids", "13. Climate action", "QH501-531", "Laptev Sea", "Fe isotopes", "14. Life underwater", "Earth and Related Environmental Sciences", "QH540-549.5", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://bg.copernicus.org/articles/16/1305/2019/bg-16-1305-2019.pdf"}, {"href": "https://doi.org/10.5194/bg-16-1305-2019"}, {"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": "10.5194/bg-16-1305-2019", "name": "item", "description": "10.5194/bg-16-1305-2019", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/bg-16-1305-2019"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-04-26T00:00:00Z"}}, {"id": "10.5194/bg-2018-181", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:21:39Z", "type": "Journal Article", "created": "2018-04-26", "title": "Distribution of Fe isotopes in particles and colloids in the salinity gradient along the Lena River plume, Laptev Sea", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. Riverine Fe input is the primary Fe source to the ocean. This study is focused on the distribution of Fe along the Lena River freshwater plume in the Laptev Sea using samples from a 600\u2009km long transect in front of the Lena River mouth. Separation of the particulate (&gt;\u20090.22\u2009\u00b5m), colloidal (0.22\u2009\u00b5m\u20131\u2009kDa), and truly dissolved (\u200999\u2009% of particulate Fe and about 90\u2009% of the colloidal Fe was observed across the shelf, while the truly dissolved phase was almost constant across the Laptev Sea. Thus, the truly dissolved Fe could be an important source of bioavailable Fe for plankton in the central Arctic Ocean, together with the colloidal Fe. Fe-isotope analysis showed that the particulate phase and the sediment below the Lena River freshwater plume had negative \u03b456Fe values (relative to IRMM-14). The colloidal Fe phase showed negative \u03b456Fe values close to the river mouth (about \u22120.20\u2009\u2030) and positive \u03b456Fe values in the outermost stations (about +0.10\u2009\u2030).  We suggest that the shelf zone acts as a sink for Fe particles and colloids with negative \u03b456Fe values, representing chemically reactive ferrihydrites. While the positive \u03b456Fe values of the colloidal phase within the outer Lena River freshwater plume, might represent Fe-oxyhydroxides, which remain in the water column, and will be the predominant \u03b456Fe composition in the Arctic Ocean.                         </p></article>", "keywords": ["particles", "QE1-996.5", "Ecology", "truly dissolved iron", "Geology", "Geokemi", "Lena River Plume", "iron isotopes", "01 natural sciences", "estuarine mixing", "6. Clean water", "Geovetenskap och relaterad milj\u00f6vetenskap", "Geochemistry", "iron particles", "Life", "colloids", "13. Climate action", "QH501-531", "Laptev Sea", "Fe isotopes", "14. Life underwater", "Earth and Related Environmental Sciences", "QH540-549.5", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://bg.copernicus.org/articles/16/1305/2019/bg-16-1305-2019.pdf"}, {"href": "https://doi.org/10.5194/bg-2018-181"}, {"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": "10.5194/bg-2018-181", "name": "item", "description": "10.5194/bg-2018-181", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/bg-2018-181"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-04-26T00:00:00Z"}}, {"id": "2904514118", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:25:52Z", "type": "Journal Article", "created": "2018-12-12", "title": "Sensitivity of labile carbon fractions to tillage and organic matter management and their potential as comprehensive soil quality indicators across pedoclimatic conditions in Europe", "description": "Abstract   Soil quality is defined as the capacity of the soil to perform multiple functions, and can be assessed by measuring soil chemical, physical and biological parameters. Among soil parameters, labile organic carbon is considered to have a primary role in many soil functions related to productivity and environmental resilience. Our study aimed at assessing the suitability of different labile carbon fractions, namely dissolved organic carbon (DOC), hydrophilic DOC (Hy-DOC), permanganate oxidizable carbon (POXC, also referred to as Active Carbon), hot water extractable carbon (HWEC) and particulate organic matter carbon (POMC) as soil quality indicators in agricultural systems. To do so, we tested their sensitivity to two agricultural management factors (tillage and organic matter input) in 10 European long-term field experiments (LTEs), and we assessed the correlation of the different labile carbon fractions with physical, chemical and biological soil quality indicators linked to soil functions. We found that reduced tillage and high organic matter input increase concentrations of labile carbon fractions in soil compared to conventional tillage and low organic matter addition, respectively. POXC and POMC were the most sensitive fractions to both tillage and fertilization across the 10 European LTEs. In addition, POXC was the labile carbon fraction most positively correlated with soil chemical (total organic carbon, total nitrogen, and cation exchange capacity), physical (water stable aggregates, water holding capacity, bulk density) and biological soil quality indicators (microbial biomass carbon and nitrogen, and soil respiration).  We conclude that POXC represents a labile carbon fraction sensitive to soil management and that is the most informative about total soil organic matter, nutrients, soil structure, and microbial pools and activity, parameters commonly used as indicators of various soil functions, such as C sequestration, nutrient cycling, soil structure formation and soil as a habitat for biodiversity. Moreover, POXC measurement is relatively cheap, fast and easy. Therefore, we suggest measuring POXC as the labile carbon fraction in soil quality assessment schemes in addition to other valuable soil quality indicators.", "keywords": ["2. Zero hunger", "Dissolved organic carbon (DOC)", "Hydrophilic dissolved organic carbon (Hy-DOC)", "Permanganate oxidizable carbon (POXC)", "13. Climate action", "Long-term experimental field (LTEs)", "Hot water extractable carbon (HWEC)", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Particulate organic matter carbon (POMC)"]}, "links": [{"href": "https://doi.org/2904514118"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Indicators", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2904514118", "name": "item", "description": "2904514118", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2904514118"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-04-01T00:00:00Z"}}, {"id": "10.5281/zenodo.3832031", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:23:19Z", "type": "Dataset", "title": "Radiocarbon content of carbon dioxide, methane, dissolved organic carbon and particulate organic carbon from the northern permafrost region and other studies", "description": "The dataset includes <sup>14</sup>C measurements of CO<sub>2</sub>, CH<sub>4</sub>, DOC and POC mostly from the northern permafrost region. Some other studies are included from sites not underlained by permafrost. The dataset focuses on <sup>14</sup>C measurements of gaseous soil emissions and waterborne ecosystem C fluxes but the database also included C forms belowground, such as soil gases and pore water DOC.", "keywords": ["13. Climate action", "15. Life on land", "radiocarbon", " permafrost", " carbon dioxide", " methane", " dissolved organic carbon", " particulate organic carbon", " DOC", " POC", " thermokarst", " thaw"], "contacts": [{"organization": "Estop-Aragon\u00e9s, Cristian", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.3832031"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.3832031", "name": "item", "description": "10.5281/zenodo.3832031", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.3832031"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-05-18T00:00:00Z"}}, {"id": "2799682173", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:25:49Z", "type": "Journal Article", "created": "2018-04-26", "title": "Distribution of Fe isotopes in particles and colloids in the salinity gradient along the Lena River plume, Laptev Sea", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Abstract. Riverine Fe input is the primary Fe source to the ocean. This study is focused on the distribution of Fe along the Lena River freshwater plume in the Laptev Sea using samples from a 600\u2009km long transect in front of the Lena River mouth. Separation of the particulate (&gt;\u20090.22\u2009\u00b5m), colloidal (0.22\u2009\u00b5m\u20131\u2009kDa), and truly dissolved (\u200999\u2009% of particulate Fe and about 90\u2009% of the colloidal Fe was observed across the shelf, while the truly dissolved phase was almost constant across the Laptev Sea. Thus, the truly dissolved Fe could be an important source of bioavailable Fe for plankton in the central Arctic Ocean, together with the colloidal Fe. Fe-isotope analysis showed that the particulate phase and the sediment below the Lena River freshwater plume had negative \u03b456Fe values (relative to IRMM-14). The colloidal Fe phase showed negative \u03b456Fe values close to the river mouth (about \u22120.20\u2009\u2030) and positive \u03b456Fe values in the outermost stations (about +0.10\u2009\u2030).  We suggest that the shelf zone acts as a sink for Fe particles and colloids with negative \u03b456Fe values, representing chemically reactive ferrihydrites. While the positive \u03b456Fe values of the colloidal phase within the outer Lena River freshwater plume, might represent Fe-oxyhydroxides, which remain in the water column, and will be the predominant \u03b456Fe composition in the Arctic Ocean.                         </p></article>", "keywords": ["particles", "QE1-996.5", "Ecology", "truly dissolved iron", "Geology", "Geokemi", "Lena River Plume", "iron isotopes", "01 natural sciences", "estuarine mixing", "6. Clean water", "Geovetenskap och relaterad milj\u00f6vetenskap", "Geochemistry", "iron particles", "Life", "colloids", "13. Climate action", "QH501-531", "Laptev Sea", "Fe isotopes", "14. Life underwater", "Earth and Related Environmental Sciences", "QH540-549.5", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://bg.copernicus.org/articles/16/1305/2019/bg-16-1305-2019.pdf"}, {"href": "https://doi.org/2799682173"}, {"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": "2799682173", "name": "item", "description": "2799682173", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2799682173"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-04-26T00:00:00Z"}}, {"id": "3132814296", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:26:10Z", "type": "Dataset", "title": "Silicon isotopes in Arctic and sub-Arctic glacial meltwaters", "description": "Open AccessSupplement to: Hatton, Jade Elizabeth; Hendry, Katharine R; Hawkings, Jonathan; Wadham, Jemma; Opfergelt, Sophie; Kohler, Tyler; Yde, Jacob; Stibal, Marek; \u017d\u00e1rsk\u00fd, Jakub (2019): Silicon isotopes in Arctic and sub-Arctic glacial meltwaters: the role of the subglacial weathering in the silicon cycle. Proceedings of the Royal Society A-Mathematical Physical and Engineering Sciences, 475(2228)", "keywords": ["Silicon", "water", "Isotope CYcling in the LABrador Sea (ICY-LAB)", "silicon particulate amorphous", "electrical", "Chloride", "Chloride anion", "Sodium cation", "Temperature", " water", "Sulfate anion", "Silicon", " particulate amorphous", "particulate amorphous", "silicon dissolved", "DATE TIME", "Bicarbonate ion", "Magnesium", "Isotope CYcling in the LABrador Sea ICY LAB", "Glacier", "Fluoride", "LONGITUDE", "Ratio", "Calcium cation", "Conductivity", "Potassium cation", "pH", "Multiple investigations", "Sodium", "Temperature", "Suspended particulate matter", "\u03b430Si", "\u03b430Si", " silicon dissolved", "Conductivity", " electrical", "Sulfate", "Bicarbonate", "DATE/TIME", "13. Climate action", "Earth System Research", "LATITUDE", "Potassium", "Calcium", "\u03b430Si", " silicon particulate amorphous", "Magnesium cation"], "contacts": [{"organization": "Hatton, Jade Elizabeth, Hendry, Katharine R, Hawkings, Jonathan, Wadham, Jemma, Opfergelt, Sophie, Kohler, Tyler, Yde, Jacob, Stibal, Marek, \u017d\u00e1rsk\u00fd, Jakub,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/3132814296"}, {"rel": "self", "type": "application/geo+json", "title": "3132814296", "name": "item", "description": "3132814296", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/3132814296"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=+dissolved&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=+dissolved&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": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=+dissolved&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=+dissolved&offset=11", "hreflang": "en-US"}], "numberMatched": 11, "numberReturned": 11, "distributedFeatures": [], "timeStamp": "2026-07-27T12:59:10.763144Z"}