Natural nitrogen isotopic signature reveals deprotonation during ammonium transport across living organisms.
Conversion of arable land (maize) to pasture will affect the soil organic matter (SOM) content. Changes in the SOM content were studied using a size- and density-fractionation method and C-13 analysis. Twenty-six years of maize cropping had resulted in a depletion of carbon stored in the macro-organic fractions (>150 mu m) and an increase in the 250 mu m), light (b.d. 150 mu m) and light (b.d. 150 mu m; b.d. >1.13 g cm(-3)) in the 0- to 20-cm layer was still 40-50% lower than in the continuous pasture plots. Average half-life times calculated from C-13 analyses ranged from 7 years in the light fractions to 56 years in heavy fractions. Fractionation results and C-13 data indicated that mechanical disturbance (plowing) during maize cropping had resulted in vertical displacement of dispersed soil carbon from the 0- to 20-cm layer down to 60-80 cm. Conversion of arable land to pasture, therefore, not only causes a regeneration of the soil carbon content, it also reduces the risk of contaminant transport by dispersed soil carbon.
", "keywords": ["land use change", "DECOMPOSITION", "2. Zero hunger", "C-13 analyses", "04 agricultural and veterinary sciences", "15. Life on land", "maize", "Maize", "C-13 NATURAL-ABUNDANCE", "CULTIVATION", "pasture", "13C analyses", "VERTISOLS", "SIZE", "SYSTEMS", "Pasture", "0401 agriculture", " forestry", " and fisheries", "Organic matter", "Fractionation", "fractionation", "Land use change", "CARBON TURNOVER", "FRACTIONS", "organic matter", "STORAGE"], "contacts": [{"organization": "R\u00f6mkens, P.F.A.M., van der Plicht, J., Hassink, J.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s003740050494"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biology%20and%20Fertility%20of%20Soils", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s003740050494", "name": "item", "description": "10.1007/s003740050494", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s003740050494"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1999-01-01T00:00:00Z"}}, {"id": "10.1007/s10021-009-9288-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:14:45Z", "type": "Journal Article", "created": "2009-10-16", "title": "Soil Carbon Turnover Measurement By Physical Fractionation At A Forest-To-Pasture Chronosequence In The Brazilian Amazon", "description": "The effect of conversion from forest-to-pasture upon soil carbon stocks has been intensively discussed, but few studies focus on how this land-use change affects carbon (C) distribution across soil fractions in the Amazon basin. We investigated this in the 20\u00a0cm depth along a chronosequence of sites from native forest to three successively older pastures. We performed a physicochemical fractionation of bulk soil samples to better understand the mechanisms by which soil C is stabilized and evaluate the contribution of each C fraction to total soil C. Additionally, we used a two-pool model to estimate the mean residence time (MRT) for the slow and active pool C in each fraction. Soil C increased with conversion from forest-to-pasture in the particulate organic matter (>250\u00a0\u03bcm), microaggregate (53\u2013250\u00a0\u03bcm), and d-clay (<2\u00a0\u03bcm) fractions. The microaggregate comprised the highest soil C content after the conversion from forest-to-pasture. The C content of the d-silt fraction decreased with time since conversion to pasture. Forest-derived C remained in all fractions with the highest concentration in the finest fractions, with the largest proportion of forest-derived soil C associated with clay minerals. Results from this work indicate that microaggregate formation is sensitive to changes in management and might serve as an indicator for management-induced soil carbon changes, and the soil C changes in the fractions are dependent on soil texture.", "keywords": ["2. Zero hunger", "tropical land-use change", "soil physical fractionation", "deforestation", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "soil carbon", "15. Life on land"]}, "links": [{"href": "https://eprints.qut.edu.au/37758/1/lisb7891.pdf"}, {"href": "https://doi.org/10.1007/s10021-009-9288-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecosystems", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10021-009-9288-7", "name": "item", "description": "10.1007/s10021-009-9288-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10021-009-9288-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-10-17T00:00:00Z"}}, {"id": "10.1007/s10021-024-00952-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:14:47Z", "type": "Journal Article", "created": "2025-01-06", "title": "Substrate Origin Controls Phosphorus Availability in Globally Distributed Long-Term Chronosequences", "description": "AbstractPhosphorus (P) is one of the most important elements for soil biology and biogeochemistry worldwide. Yet, despite decades of research, important uncertainties persist about the drivers and changes in soil P forms during long-term soil formation. Here, we analyzed topsoils from nine globally distributed retrogressive soil chronosequences aiming to evaluate the relative contribution of key environmental factors (that is, soil age, substrate origin, climate, soil attributes, and vegetation) in explaining the long-term dynamics of primary, occluded, non-occluded, organic, and total P across different terrestrial ecosystems. We found that, rather than soil age, substrate origin was the main driver controlling the fate of different P fractions across contrasting environmental conditions. Moreover, our findings suggest that temporal patterns governing the long-term dynamics of different P forms as soils develop are not consistent among soil chronosequences, which is a result of contrasting environmental conditions, especially substrate origin. We further showed that topsoil total P was the greatest at intermediate soil development stage across the globe. Lastly, our results showed that P fractions were highly correlated with multiple surrogates of ecosystem services, such as carbon sequestration, plant productivity, and biodiversity. Together, our work provides new insights into the natural history of P availability, and further highlights that substrate origin, rather than soil age, is essential to predict changes in P availability in response to physical perturbation and climate change.50\u00a0\u00a0\u00b5m) and fine (<50\u00a0\u00a0\u00b5m) SOC fractions; ii) thermal Rock-Eval\u00ae 6 analysis in compilation with the PARTYSOCv2.0EU model to estimate active and stable SOC pools and iii) mid-infrared spectroscopy to determine the relative SOC composition and derive fast (aliphatic compounds) and slow (aromatic/carboxylic compounds) cycling SOC pools. The particle size SOC fractions and thermal SOC pools showed similar dynamics but differed substantially in the magnitude with LUC. The fine SOC fraction contained around two-thirds of the total SOC across all land uses and was strongly responsive by nearly matching the relative changes of total SOC (slope of 0.76 and R2\u00a0=\u00a00.91). Therefore, the fine fraction SOC might be more dynamic than considered until now. In comparison, the stable SOC pool calculated using PARTYSOCv2.0EU was less responsive to the relative changes (slope of 0.43 and R2\u00a0=\u00a00.72) and contained around 40\u00a0% of the total SOC. This underlines that both physical and thermal approaches separate biogeochemically distinct pools. The qualitative assessment by mid-infrared spectroscopy related well to the thermal SOC pools but not to the particle size fractions. The initial land-use SOC composition, as a ratio of the corresponding fast and slow cycling SOC pool, can be a suitable predictor for SOC evolution. This was particularly true for thermal and mid-infrared spectroscopy derived SOC pools. We show that three conceptually different methods (physical, thermal and mid-infrared spectroscopic) are suitable to determine SOC pool changes for a large diversity of LUC, but the sensitivity of the individual pools can differ strongly, depending on the method.", "keywords": ["Particle size fractionation", "Science", "Q", "Rock-Eval\u00ae analysis", "Cropland", "Forest", "Grassland", "Mid-infrared spectroscopy"], "contacts": [{"organization": "Schiedung, Marcus, Barr\u00b4e, Pierre, Peoplau, Christopher,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.geoderma.2024.117154"}, {"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.2024.117154", "name": "item", "description": "10.1016/j.geoderma.2024.117154", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.geoderma.2024.117154"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2025-01-01T00:00:00Z"}}, {"id": "10.1016/j.agee.2013.09.024", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:15:37Z", "type": "Journal Article", "created": "2013-11-01", "title": "Organic Matter Composition In Density Fractions Of Cerrado Ferralsols As Revealed By Cpmas 13c Nmr: Influence Of Pastureland, Cropland And Integrated Crop-Livestock", "description": "Open AccessPeer reviewed", "keywords": ["2. Zero hunger", "Sodium polytungstate", "13. Climate action", "Physical fractionation", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Soil use system", "01 natural sciences", "Spectroscopy", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2013.09.024"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agriculture%2C%20Ecosystems%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agee.2013.09.024", "name": "item", "description": "10.1016/j.agee.2013.09.024", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2013.09.024"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-06-01T00:00:00Z"}}, {"id": "10.1016/j.agwat.2019.105722", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:15:46Z", "type": "Journal Article", "created": "2019-08-08", "title": "Tomato landraces as a source to minimize yield losses and improve fruit quality under water deficit conditions", "description": "Abstract The predicted climate change conditions are forcing crop improvement researchers to find drought tolerant genotypes. The aim of this experiment was to screen a large tomato (Solanum lycopersicum L.) collection cultivated under well-watered and water deficit conditions, in order to identify those genotypes with the best performance under water shortage. Thus, 165 tomato genotypes including different cultivars (landraces and modern genotypes) and fruit types (processing, big size, long shelf-life and cherry) were grown in open field under two different cultivation regimes: well-watered (WW, covering 100% crop evapotranspiration demands) and water deficit (WD, irrigation stopped one month after field transplantation). Several leaf-level traits, yield and fruit quality were measured. Large variability was found under WW, with 20-fold variations in yield among genotypes. No differences in yield or fruit quality traits were found between modern genotypes and landraces, while differences in these parameters were observed based on the fruit type. Water deficit affected the observed variability, with a general decrease of yield and increases of fruit quality. Cluster analysis based on fruit traits placed several landraces in the same cluster that the most productive modern genotypes, irrespective of the water treatment. Variable responses to WD were observed, depending on the fruit or cultivar type. Carbon isotope composition was positively correlated with leaf nitrogen content, and determined the yield limit under both treatments. The results of this study highlight the potential of landraces for minimizing yield reduction under WD and increasing fruit quality, having similar or even better performance as compared to modern improved genotypes.", "keywords": ["2. Zero hunger", "0106 biological sciences", "0301 basic medicine", "Drought stress", "Fruit quality", "15. Life on land", "Carbon isotope fractionation", "01 natural sciences", "6. Clean water", "03 medical and health sciences", "13. Climate action", "Mediterranean climate", "Tomato landraces", "Water shortage"]}, "links": [{"href": "https://doi.org/10.1016/j.agwat.2019.105722"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agricultural%20Water%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agwat.2019.105722", "name": "item", "description": "10.1016/j.agwat.2019.105722", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agwat.2019.105722"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-01T00:00:00Z"}}, {"id": "10.1016/j.chemgeo.2019.119279", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:04Z", "type": "Journal Article", "created": "2019-08-15", "title": "Volatile loss under a diffusion-limited regime in tektites: Evidence from tin stable isotopes", "description": "Abstract Tektites are glasses derived from near-surface continental crustal rocks that were molten and ejected from the Earth's surface during hypervelocity meteorite impacts. They are among the driest terrestrial samples, although the exact mechanism of water loss and the behaviour of other volatile species during these processes are debated. Based on the difference in magnitude of the Cu and Zn isotopic fractionations in tektites, and the difference of diffusivity between these elements, it was suggested that volatile loss was diffusion-limited. Tin is potentially well suited to testing this model, as it has a lower diffusivity in silicate melts than both Cu and Zn, but a similar volatility to Zn. Here, we analysed the Sn stable isotopic composition in a suite of seven tektites, representing three of the four known tektite strewn fields, and for which Zn and Cu isotopes were previously reported. Tin is enriched in the heavier isotopes (\u22652.5\u2030 on the 122Sn/118Sn ratio) in tektites, correlated with the degree of Sn elemental depletion in their respective samples as well as with Cu and Zn isotope ratios, implying a common control. While the isotope fractionation of Sn, Cu and Zn is a result of volatility, the magnitude of isotope fractionation is strongly moderated by their relative rates of diffusion in the molten tektite droplets. An Australasian Muong Nong-type tektite analysed has the least Sn depletion and Sn isotope fractionation, consistent with these samples being more proximal to the source and experiencing a shorter time at high temperatures.", "keywords": ["Volatiles", "ORIGIN", "FRACTIONATION", "01 natural sciences", "Tektites", "[SDU] Sciences of the Universe [physics]", "EVAPORATION", "ZINC", "105105 Geochemistry", "SILICATE MELTS", "Tin", "DISSOLUTION", "13. Climate action", "Impacts", "105105 Geochemie", "GEOCHEMISTRY", "CU", "GEOLOGICAL-MATERIALS", "Stable isotopes", "IMPACT GLASSES", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemgeo.2019.119279"}, {"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": "10.1016/j.chemgeo.2019.119279", "name": "item", "description": "10.1016/j.chemgeo.2019.119279", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemgeo.2019.119279"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-12-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2009.01.042", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:04Z", "type": "Journal Article", "created": "2009-02-16", "title": "Effects Of Earthworms On Metal Uptake Of Heavy Metals From Polluted Mine Soils By Different Crop Plants", "description": "A pot experiment was conducted in order to assess the effect of the earthworm Eisenia fetida on the uptake of Pb, Zn, Cd and Cu from soils polluted by mining activities using maize (Zea mays) and barley (Hordeum vulgare). Results from single and sequential extractions showed that the soil chemical partitioning of heavy metals was significantly changed by E. fetida, leading to a higher concentration of metals in the non-residual fractions of the soil. Earthworm activities significantly increased shoot biomass (65% for maize and 73% for barley) and root metal concentration for all the metals under study in both maize and barley. The total accumulation rate values for Cd, Cu, Pb and Zn were significantly higher in the presence of E. fetida for both crop plants. Those latter effects led to an increase in Zn extraction yields of up to 3.7-fold and 2.3-fold for barley and maize, respectively.", "keywords": ["2. Zero hunger", "Hordeum", "04 agricultural and veterinary sciences", "Chemical Fractionation", "Plant Roots", "Zea mays", "01 natural sciences", "Mining", "Biodegradation", " Environmental", "13. Climate action", "Metals", " Heavy", "Animals", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Oligochaeta", "Plant Shoots", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2009.01.042"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2009.01.042", "name": "item", "description": "10.1016/j.chemosphere.2009.01.042", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2009.01.042"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-05-01T00:00:00Z"}}, {"id": "10.1088/1748-9326/ac9198", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:55Z", "type": "Journal Article", "created": "2022-09-13", "title": "Vertical pattern of organic matter decomposability in cryoturbated permafrost-affected soils", "description": "Abstract
Permafrost thaw will release additional carbon dioxide into the atmosphere resulting in a positive feedback to climate change. However, the mineralization dynamics of organic matter (OM) stored in permafrost-affected soils remain unclear. We used physical soil fractionation, radiocarbon measurements, incubation experiments, and a dynamic decomposition model to identify distinct vertical pattern in OM decomposability. The observed differences reflect the type of OM input to the subsoil, either by cryoturbation or otherwise, e.g. by advective water-borne transport of dissolved OM. In non-cryoturbated subsoil horizons, most OM is stabilized at mineral surfaces or by occlusion in aggregates. In contrast, pockets of OM-rich cryoturbated soil contain sufficient free particulate OM for microbial decomposition. After thaw, OM turnover is as fast as in the upper active layer. Since cryoturbated soils store ca. 450 Pg carbon, identifying differences in decomposability according to such translocation processes has large implications for the future global carbon cycle and climate, and directs further process model development.M2 (0.4)>M1 (0.3) is in agreement with a significant influence of metals on the SOM turnover. New C4 SOM, mainly present in the labile coarser fractions and less contaminated by metals than the stabilised C3 SOM of the clay fraction, is more easily degraded by microorganisms.", "keywords": ["Geologic Sediments", "550", "Agronomie", "Nitrogen", "[SDV.SA.AGRO]Life Sciences [q-bio]/Agricultural sciences/Agronomy", "Zea mays", "01 natural sciences", "630", "Soil", "Soil organic matter dynamic", "Soil Pollutants", "Biomass", "Humic Substances", "0105 earth and related environmental sciences", "[SDV.SA.AGRO] Life Sciences [q-bio]/Agricultural sciences/Agronomy", "2. Zero hunger", "Carbon Isotopes", "Stable isotopic carbon ratio -", "Spectrophotometry", " Atomic", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "Size fractionation", "6. Clean water", "Zinc", "Biodegradation", " Environmental", "Lead", "Trace metal", "Metals", "Metallurgy", "0401 agriculture", " forestry", " and fisheries", "Environmental Pollution", "Copper", "Cadmium"]}, "links": [{"href": "https://oatao.univ-toulouse.fr/3839/1/Dumat_3839.pdf"}, {"href": "https://doi.org/10.1016/j.envpol.2005.10.027"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2005.10.027", "name": "item", "description": "10.1016/j.envpol.2005.10.027", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2005.10.027"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-08-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2008.11.050", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:19Z", "type": "Journal Article", "created": "2009-01-19", "title": "Ion Activity And Distribution Of Heavy Metals In Acid Mine Drainage Polluted Subtropical Soils", "description": "The oxidative dissolution of mine wastes gives rise to acidic, metal-enriched mine drainage (AMD) and has typically posed an additional risk to the environment. The poly-metallic mine Dabaoshan in South China is an excellent test site to understand the processes affecting the surrounding polluted agricultural fields. Our objectives were firstly to investigate metal ion activity in soil solution, distribution in solid constituents, and spatial distribution in samples, secondly to determine dominant environment factors controlling metal activity in the long-term AMD-polluted subtropical soils. Soil Column Donnan Membrane Technology (SC-DMT) combined with sequential extraction shows that unusually large proportion of the metal ions are present as free ion in the soil solutions. The narrow range of low pH values prevents any pH effects during the binding onto oxides or organic matter. The differences in speciation of the soil solutions may explain the different soil degradation observed between paddy and non-paddy soils.", "keywords": ["China", "Time Factors", "550", "Speciation", "0211 other engineering and technologies", "Industrial Waste", "02 engineering and technology", "Chemical Fractionation", "01 natural sciences", "Mining", "Soil", "Acid mine drainage", "X-Ray Diffraction", "Metals", " Heavy", "Soil Pollutants", "Humic Substances", "0105 earth and related environmental sciences", "Ions", "Hydrogen-Ion Concentration", "15. Life on land", "6. Clean water", "Tropical soils", "13. Climate action", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "Sorption", "Free ion", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2008.11.050"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2008.11.050", "name": "item", "description": "10.1016/j.envpol.2008.11.050", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2008.11.050"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-04-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2010.11.032", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:20Z", "type": "Journal Article", "created": "2010-12-29", "title": "Lumbricus Terrestris L. Activity Increases The Availability Of Metals And Their Accumulation In Maize And Barley", "description": "The effect of the earthworm Lumbricus terrestris L. on metal availability in two mining soils was assessed by means of chemical extraction methods and a pot experiment using crop plants. Results from single and sequential extractions showed that L. terrestris had a slight effect on metal fractionation in the studied soils: only metals bound to the soil organic matter were significantly increased in some cases. However, we found that L. terrestris significantly increased root, shoot and total Pb and Zn concentrations in maize and barley for the soil with the highest concentrations of total and available metals. Specifically, shoot Pb concentration was increased by a factor of 7.5 and 3.9 for maize and barley, respectively, while shoot Zn concentration was increased by a factor of 3.7 and 1.7 for maize and barley, respectively. Our results demonstrated that earthworm activity increases the bioavailability of metals in soils.", "keywords": ["2. Zero hunger", "Hordeum", "04 agricultural and veterinary sciences", "Chemical Fractionation", "15. Life on land", "Plant Roots", "Zea mays", "01 natural sciences", "Mining", "Soil", "Zinc", "Biodegradation", " Environmental", "Lead", "Spain", "Animals", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Oligochaeta", "Plant Shoots", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2010.11.032"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2010.11.032", "name": "item", "description": "10.1016/j.envpol.2010.11.032", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2010.11.032"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-03-01T00:00:00Z"}}, {"id": "10.1016/j.foreco.2007.10.027", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:30Z", "type": "Journal Article", "created": "2007-12-06", "title": "Pairwise Comparison Of Soil Organic Particle-Size Distributions In Native Savannas And Eucalyptus Plantations In Congo", "description": "Abstract Conversion of native vegetation into fast-growing tree plantations is known to affect soil organic matter (SOM): soil carbon (C) and nitrogen (N) content and their distribution in particle-size fractions can be modified in various ways depending on numerous factors, such as soil properties, SOM levels prior to conversion, climatic conditions, silvicultural practices and fire occurrence. Since 1978, 43,000\u00a0ha of clonal eucalyptus plantations have been established on sandy coastal plains under savannas near Pointe-Noire, Congo. We investigated the effects of afforestation on topsoil (0\u201310\u00a0cm) C and N through the analysis of their distribution in particle-size fractions using a pairwise experimental design that compared adjacent savannas and plantations. The studied plantations were of different ages (2\u201330-year-old stands) and differently affected by accidental fires. No significant difference in total topsoil C, N or C/N was observed between young plantations and savanna. In old plantations that had not been affected by fire, total topsoil C content was twice as high as in savanna ( p = 0.0016 ), on average, mostly involving fractions > 50\u00a0 \u03bc m. By contrast, total topsoil N did not differ significantly at these sites. In old plantations affected by fire, total topsoil C content did not differ significantly from that in savanna, but total topsoil N was 26 % lower in plantations than in savanna ( p = 0.0063 ), on average, and the decrease affected fractions 200\u00a0 \u03bc m especially. Whatever the fire occurrence, total topsoil C/N was higher in old plantations than in savanna, in fractions > 20\u00a0 \u03bc m especially.", "keywords": ["[SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture", "http://aims.fao.org/aos/agrovoc/c_7190", "SAVANNA", "SOIL ORGANIC MATTER", "FIRE", "analyse de sol", "FLUX ET STOCKS C", "http://aims.fao.org/aos/agrovoc/c_35657", "azote", "2. Zero hunger", "Eucalyptus", "FRACTIONATION", "fraction du sol", "forestry", "FIRE", "04 agricultural and veterinary sciences", "eucalyptus", "META ANALYSIS", "TURNOVER", "[SDV.SA.SF] Life Sciences [q-bio]/Agricultural sciences/Silviculture", " forestry", "plantations", "particle size fractionation", "http://aims.fao.org/aos/agrovoc/c_5990", "fire", "mati\u00e8re organique du sol", "http://aims.fao.org/aos/agrovoc/c_2683", "P33 - Chimie et physique du sol", "570", "PARTICLE-SIZE FRACTIONATION", "http://aims.fao.org/aos/agrovoc/c_24420", "MATTER DYNAMICS", "http://aims.fao.org/aos/agrovoc/c_5192", "TROPICAL SOILS", "LITTER DECOMPOSITION", "soil organic matter", "MANAGEMENT", "EUCALYPTUS", "savane", "http://aims.fao.org/aos/agrovoc/c_1301", "PINUS", "CHANGEMENT D'USAGE DES TERRES", "CARBON DYNAMICS", "http://aims.fao.org/aos/agrovoc/c_1811", "15. Life on land", "savanna", "K10 - Production foresti\u00e8re", "AFFORESTATION", "http://aims.fao.org/aos/agrovoc/c_6825", "0401 agriculture", " forestry", " and fisheries", "carbone", "impact sur l'environnement", "http://aims.fao.org/aos/agrovoc/c_7198"]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2007.10.027"}, {"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": "10.1016/j.foreco.2007.10.027", "name": "item", "description": "10.1016/j.foreco.2007.10.027", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2007.10.027"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-03-01T00:00:00Z"}}, {"id": "10.1016/j.foreco.2011.02.004", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:32Z", "type": "Journal Article", "created": "2011-03-09", "title": "Does Tree Species Composition Control Soil Organic Carbon Pools In Mediterranean Mountain Forests?", "description": "We compared soil organic carbon (SOC) stocks and stability under two widely distributed tree species in the Mediterranean region Scots pine (Pinus sylvestris L.) and Pyrenean oak (Quercus pyrenaica Willd.) at their ecotone. We hypothesised that soils under Scots pine store more SOC and that tree species composition controls the amount and biochemical composition of organic matter inputs, but does not influence physico-chemical stabilization of SOC. At three locations in Central Spain, we assessed SOC stocks in the forest floor and down to 50cm in the mineral in pure and mixed stands of Pyrenean oak and Scots pine, as well as litterfall inputs over approximately 3 years at two sites. The relative SOC stability in the topsoil (0-10cm) was determined through size-fractionation (53\u03bcm) into mineral-associated and particulate organic matter and through KMnO4-reactive C and soil CN ratio.Scots pine soils stored 95-140Mgha-1 of C (forest floor plus 50cm mineral soil), roughly the double than Pyrenean oak soils (40-80Mgha-1 of C), with stocks closely correlated to litterfall rates. Differences were most pronounced in the forest floor and uppermost 10cm of the mineral soil, but remained evident in the deeper layers. Biochemical indicators of soil organic matter suggested that biochemical recalcitrance of soil organic matter was higher under pine than under oak, contributing as well to a greater SOC storage under pine. Differences in SOC stocks between tree species were mainly due to the particulate organic matter (not associated to mineral particles). Forest conversion from Pyrenean oak to Scots pine may contribute to enhance soil C sequestration, but only in form of mineral-unprotected soil organic matter. \u00a9 2011 Elsevier B.V.", "keywords": ["Quercus pyrenaica", "Soil organic carbon", "Mediterranean mountain", "Ecotone", "0401 agriculture", " forestry", " and fisheries", "Pinus sylvestris", "04 agricultural and veterinary sciences", "15. Life on land", "Soil organic matter size-fractionation"]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2011.02.004"}, {"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": "10.1016/j.foreco.2011.02.004", "name": "item", "description": "10.1016/j.foreco.2011.02.004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2011.02.004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-11-01T00:00:00Z"}}, {"id": "10.1016/j.gca.2016.09.013", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:36Z", "type": "Journal Article", "created": "2016-09-22", "title": "Elemental partitioning and isotopic fractionation of Zn between metal and silicate and geochemical estimation of the S content of the Earth\u2019s core", "description": "Open AccessZinc metal-silicate fractionation provides experimental access to the conditions of core formation and Zn has been used to estimate the S contents of the Earth's core and of the bulk Earth, assuming that they share similar volatility and that Zn was not partitioned into the Earth's core. We have conducted a suite of partitioning experiments to characterize Zn metal-silicate elemental and isotopic fractionation as a function of time, temperature, and composition. Experiments were conducted at temperatures from 1473-2273K, with run durations from 5-240 minutes for four starting materials. Chemical and isotopic equilibrium is achieved within 10 minutes. Zinc metal-silicate isotopic fractionation displays no resolvable dependence on temperature, composition, or oxygen fugacity. Thus, the Zn isotopic composition of silicate phases can be used as a proxy for bulk telluric bodies. Results from this study and literature data were used to parameterize Zn metal-silicate partitioning as a function of temperature, pressure, and redox state. Using this parameterization and viable formation conditions, we have estimated a range of Zn contents in the cores of iron meteorite parent bodies (i.e. iron meteorites) of ~0.1-150 ppm, in good agreement with natural observations. We have calculated the first geochemical estimates for the Zn contents of the Earth's core and of the bulk Earth, at 242 +/-107 ppm and 114 +/-34 ppm (respectively), that consider the slightly siderophile behavior of Zn and are therefore significantly higher than previous estimates. Assuming similar volatility for S and Zn, a chondritic S/Zn ratio, and considering our new estimates, we have calculated a geochemical upper bound for the S content of the Earth's core of 6.3 +/-1.9 wt%. This indicates that S may be a major contributor to the density deficit of the Earth's core or that the S/Zn ratio for the Earth is non-chondritic.", "keywords": ["Earth and Planetary Astrophysics (astro-ph.EP)", "550", "[SDU.ASTR.EP] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]", "FOS: Physical sciences", "01 natural sciences", "Iron meteorites", "13. Climate action", "Core formation", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "Zinc metal-silicate partitioning", "Isotopic fractionation", "Sulfur", "Astrophysics - Earth and Planetary Astrophysics", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.gca.2016.09.013"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geochimica%20et%20Cosmochimica%20Acta", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.gca.2016.09.013", "name": "item", "description": "10.1016/j.gca.2016.09.013", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.gca.2016.09.013"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-01-01T00:00:00Z"}}, {"id": "10.1016/j.gca.2019.06.035", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:36Z", "type": "Journal Article", "created": "2019-07-02", "title": "Experimentally determined Si isotope fractionation between zircon and quartz", "description": "Abstract The silicon isotope composition of detrital quartz and zircon have the potential to inform us about secular changes to the silica cycle and weathering reactions on Earth. However, inferring source melt Si isotope composition from out-of-context minerals is hampered by the fact that, to-date, there is limited Si isotope equilibrium fractionation data for minerals. Here, we report experimental data to constrain Si isotope equilibrium fractionation between zircon and quartz, using two fundamentally different strategies, but with the same experimental design. First, zircon and quartz were hydrothermally synthesized from Zr(OH)4 and SiO2 at 1.5\u202fGPa and temperatures of 725, 800, and 900\u202f\u00b0C. The second experimental strategy utilized the three-isotope method; the starting materials consisted of natural zircon and isotopically-labelled SiO2. Three sets of hydrothermal time-series experiments were conducted at the same pressure and temperatures as the direct synthesis experiments. For all experiments, quartz and zircon were separated and 30Si/28Si and 29Si/28Si ratios were measured by solution multi-collector inductively coupled plasma mass spectrometry. The three-isotope method, which provides the best indicator of equilibrium fractionations, yields the following relationship: \u0394 30 S i ( q t z - z r c ) = ( 0.53 \u00b1 0.14 ) \u00d7 10 6 / T 2 where \u039430Si(qtz-zrc) is the relative difference in 30Si/28Si between quartz and zircon in permil, T is temperature in K, and the error is 2\u202fs.e. This relationship can be used to calculate the fractionation between zircon and other phases, and to estimate the Si isotope composition of the melt from which a zircon crystallized. The results may be used to assess equilibrium-disequilibrium isotope fractionations between quartz and zircon and co-existing phases in igneous rocks. These data can also be applied to out-of-context zircon (and quartz) to estimate the isotope composition of the host rock. Zircons crystallizing from a melt derived from purely igneous sources \u2013 i.e., without the involvement of \u201cweathered\u201d material \u2013 are expected to display a \u03b430SiNBS-28 (permil deviation of the 30Si/28Si from the NBS-28 standard) range from \u22120.7 to \u22120.35\u2030. Deviations from this range indicate assimilation of non-igneous (i.e., sedimentary) material in the melt source.", "keywords": ["Zircon", "GE", "550", "NDAS", "Quartz", "Si isotopes", "7. Clean energy", "01 natural sciences", "Three-istope", "[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "13. Climate action", "Igneous", "Three-isotope", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "Fractionation", "GE Environmental Sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.gca.2019.06.035"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geochimica%20et%20Cosmochimica%20Acta", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.gca.2019.06.035", "name": "item", "description": "10.1016/j.gca.2019.06.035", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.gca.2019.06.035"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-09-01T00:00:00Z"}}, {"id": "10.1016/j.geoderma.2010.12.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:39Z", "type": "Journal Article", "created": "2011-01-09", "title": "Fractionation And Geochemical Mobility Of Heavy Elements In Soils Of A Mining Area In Northern Kosovo", "description": "Abstract This paper reports the results of a geochemical study focusing on the partitioning of As, Cd, Cu, Pb, Sb and Zn in soils of the Kosovska Mitrovica mining area in northern Kosovo. The main objective was to define the element mobility in soil and potential bioavailability in relation to soil contamination levels. The Kosovska Mitrovica area is one of the main industrial sites in the former Yugoslavia and a world-class mining district in Europe. Extensive and locally very marked contamination mainly by Pb, Zn, Cd and Sb was found in soils, with the highest concentrations measured close to the Zvecan smelter. The study of As, Cd, Cu, Pb, Sb and Zn partitioning in the water soluble, extractable with 0.11\u00a0M acetic acid, reducible, oxidable and residual fractions of soils revealed that Pb was mainly associated with the reducible fraction, Cd with the extractable and reducible fractions, and As, Cu, Sb and Zn with the residual fraction. Heavy element fractionation in contaminated soils was influenced by the presence of owner mineralogical phases related to the emissions of the Zvecan smelter and to materials windborne from mining and industrial dumps, as well as originated by in situ processes. The order of mobility of these heavy elements in contaminated soils resulted as follows: Cd\u00a0\u226b\u00a0Zn\u00a0\u226b\u00a0Pb\u00a0\u226b\u00a0Sb\u00a0>\u00a0As\u00a0>\u00a0Cu. Anthropogenic amounts of heavy elements were distributed in all soil fractions, with the most relevant enrichments in the extractable and reducible ones. Anthropogenic inputs were responsible for some deviations from natural fractionation, mainly for Pb, Zn and Cd. A significant amount of Cd, Pb and Zn in contaminated soils was rather mobile, which suggests that these elements can be readily available to plants and soil organisms.", "keywords": ["Mobility", "Heavy elements; Soil fractionation; Mobility; Contamination; Smelter; Kosovo", "Contamination", "13. Climate action", "Soil fractionation", "Kosovo", "Heavy element", "01 natural sciences", "Smelter", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.geoderma.2010.12.008"}, {"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.2010.12.008", "name": "item", "description": "10.1016/j.geoderma.2010.12.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.geoderma.2010.12.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-02-01T00:00:00Z"}}, {"id": "10.1016/j.geoderma.2015.06.015", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:41Z", "type": "Journal Article", "created": "2015-07-06", "title": "Impact Of Alley Cropping Agroforestry On Stocks, Forms And Spatial Distribution Of Soil Organic Carbon \u2014 A Case Study In A Mediterranean Context", "description": "Abstract Agroforestry systems, i.e., agroecosystems combining trees with farming practices, are of particular interest as they combine the potential to increase biomass and soil carbon (C) storage while maintaining an agricultural production. However, most present knowledge on the impact of agroforestry systems on soil organic carbon (SOC) storage comes from tropical systems. This study was conducted in southern France, in an 18-year-old agroforestry plot, where hybrid walnuts ( Juglans regia \u00d7 nigra L.) are intercropped with durum wheat ( Triticum turgidum L. subsp. durum ), and in an adjacent agricultural control plot, where durum wheat is the sole crop. We quantified SOC stocks to 2.0\u00a0m depth and their spatial variability in relation to the distance to the trees and to the tree rows. The distribution of additional SOC storage in different soil particle-size fractions was also characterized. SOC accumulation rates between the agroforestry and the agricultural plots were 248\u00a0\u00b1\u00a031\u00a0kg\u00a0C\u00a0ha \u2212\u00a01 \u00a0yr \u2212\u00a01 for an equivalent soil mass (ESM) of 4000\u00a0Mg\u00a0ha \u2212\u00a01 (to 26\u201329\u00a0cm depth) and 350\u00a0\u00b1\u00a041\u00a0kg\u00a0C\u00a0ha \u2212\u00a01 \u00a0yr \u2212\u00a01 for an ESM of 15,700\u00a0Mg\u00a0ha \u2212\u00a01 (to 93\u201398\u00a0cm depth). SOC stocks were higher in the tree rows where herbaceous vegetation grew and where the soil was not tilled, but no effect of the distance to the trees (0 to 10\u00a0m) on SOC stocks was observed. Most of the additional SOC storage was found in coarse organic fractions (50\u2013200 and 200\u20132000\u00a0\u03bcm), which may be rather labile fractions. All together our study demonstrated the potential of alley cropping agroforestry systems under Mediterranean conditions to store SOC, and questioned the stability of this storage.", "keywords": ["[SDV.SA]Life Sciences [q-bio]/Agricultural sciences", "http://aims.fao.org/aos/agrovoc/c_28568", "Juglans regia", "F08 - Syst\u00e8mes et modes de culture", "culture associ\u00e9e", "Triticum turgidum", "630", "spectroscopie infrarouge", "zone m\u00e9diterran\u00e9enne", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "http://aims.fao.org/aos/agrovoc/c_35657", "agroforesterie", "2. Zero hunger", "http://aims.fao.org/aos/agrovoc/c_35927", "[SDV.SA] Life Sciences [q-bio]/Agricultural sciences", "soil organic carbon storage", "http://aims.fao.org/aos/agrovoc/c_29563", "soil organic carbon saturation", "04 agricultural and veterinary sciences", "deep soil organic carbon stocks", "http://aims.fao.org/aos/agrovoc/c_207", "s\u00e9questration du carbone", "P31 - Lev\u00e9s et cartographie des sols", "http://aims.fao.org/aos/agrovoc/c_4060", "mati\u00e8re organique du sol", "P33 - Chimie et physique du sol", "Visible and near infrared spectroscopy", "571", "structure du sol", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "Juglans nigra", "particle-size fractionation", "Particle-size fractionation", "12. Responsible consumption", "Soil organic carbon saturation", "visible and near infrared spectroscopy", "http://aims.fao.org/aos/agrovoc/c_33452", "http://aims.fao.org/aos/agrovoc/c_3081", "http://aims.fao.org/aos/agrovoc/c_4059", "Deep soil organic carbon stocks", "15. Life on land", "http://aims.fao.org/aos/agrovoc/c_331583", "cartographie des fonctions de la for\u00eat", "K10 - Production foresti\u00e8re", "soil mapping", "Soil mapping", "culture en couloirs", "http://aims.fao.org/aos/agrovoc/c_7958", "Soil organic carbon storage", "http://aims.fao.org/aos/agrovoc/c_7196", "0401 agriculture", " forestry", " and fisheries", "http://aims.fao.org/aos/agrovoc/c_1374847637217", "U30 - M\u00e9thodes de recherche"]}, "links": [{"href": "https://doi.org/10.1016/j.geoderma.2015.06.015"}, {"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.2015.06.015", "name": "item", "description": "10.1016/j.geoderma.2015.06.015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.geoderma.2015.06.015"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-12-01T00:00:00Z"}}, {"id": "10.1016/j.jenvman.2019.02.120", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:51Z", "type": "Journal Article", "created": "2019-03-06", "title": "Distribution trend of trace elements in digestate exposed to air: Laboratory-scale investigations using DGT-based fractionation", "description": "The use of digestate as amendment for agricultural soils has already been proposed as an alternative to mineral fertilizers or undigested organic matter. However, little information is available concerning the effect of digestate atmospheric exposure on trace elements speciation and, consequently, on their mobility and bio-accessibility when digestate is stored in open tanks or handled before land spreading. In this study, we investigated at laboratory-scale the effect of digestate aeration on the distribution of Al, As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Sb, Se and W using the diffusive gradients in thin films technique (DGT)-based fractionation. For this purpose, experiments were performed to assess the variation in distribution between the labile, soluble and particulate fractions over time in digested sewage sludge during passive and forced aeration. Results showed that aeration promoted a dissolution of Al, As, Co, Cr, Cu, Fe, Mn, Mo and Pb, suggesting a possible increase in their mobility that may likely occur during storage in open tanks or handling before land spreading. Labile elements' fraction increased only during forced aeration (except for Fe and Mn), suggesting that their short-term bio-accessibility can increase only after significant aeration as the one assumed to occur when land spreading takes place.", "keywords": ["550", "[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering", "Speciation", "[SDU.STU]Sciences of the Universe [physics]/Earth Sciences", "Diffusive gradients in thin films (DGT)", "Chemical Fractionation", "01 natural sciences", "630", "Soil", "Digested sewage sludge", "[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering", "Fractionation", "Diffusive gradients in thin films (DGT); Digested sewage sludge; Fractionation; Metalloids; Metals; Speciation; Chemical Fractionation; Environmental Monitoring; Sewage; Soil; Trace Elements", "Metalloids", "0105 earth and related environmental sciences", "2. Zero hunger", "Sewage", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "Trace Elements", "Metals", "13. Climate action", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "0401 agriculture", " forestry", " and fisheries", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1016/j.jenvman.2019.02.120"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jenvman.2019.02.120", "name": "item", "description": "10.1016/j.jenvman.2019.02.120", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jenvman.2019.02.120"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-05-01T00:00:00Z"}}, {"id": "10.1016/j.orggeochem.2014.05.001", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:58Z", "type": "Journal Article", "created": "2014-05-13", "title": "Fate Of Biochar In Chemically- And Physically-Defined Soil Organic Carbon Pools", "description": "Open AccessThe authors acknowledge all the assistance of AgResearch, Grasslands Research Centre, Palmerston North, New Zealand. The valuable suggestions of R. Gentile as well as the technical assistance of B. Toes, T. Maruyama, M. Vazquez and A. Singh are also appreciated. H.M.S.K.H. was funded by the New Zealand Biochar Research Centre, under the Massey University Doctoral Scholarship Programme. Financial support was covered by the Ministry of Agriculture and Forestry, New Zealand and the New Zealand Agricultural Greenhouse gas Research Centre.", "keywords": ["2. Zero hunger", "Biochar", "4. Education", "0401 agriculture", " forestry", " and fisheries", "Microaggregates", "Clays", "Fractionation", "04 agricultural and veterinary sciences", "Corn stover", "15. Life on land", "Particulate organic matter (POM)", "Silt"]}, "links": [{"href": "https://doi.org/10.1016/j.orggeochem.2014.05.001"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Organic%20Geochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.orggeochem.2014.05.001", "name": "item", "description": "10.1016/j.orggeochem.2014.05.001", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.orggeochem.2014.05.001"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-08-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2012.02.021", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:19Z", "type": "Journal Article", "created": "2012-03-08", "title": "Biodegradability Of Organic Matter In Fire-Affected Mineral Soils Of Southern Spain", "description": "Open AccessIncorporated into the soil, naturally formed pyrogenic organic matter (PyOM) is considered as highly recalcitrant, but direct estimation of PyOM decomposition rates are scarce. With this aim in mind, we subjected organic matter (OM) of fire-affected and unaffected soils to biochemical degradation under laboratory conditions and monitored CO2 production over a period of seven months. The soils derived from the Sierra de Aznalc\u00f3llar, Southern Spain, and were sampled 4 weeks and 5 years after a severe fire. Virtual fractionation of the solid-state 13C nuclear magnetic resonance (NMR) spectra of the fire-affected soils into fire-unaffected soil organic matter (SOM) and PyOM yielded charcoal C contributions of 30 to 50% to the total organic C (Corg) of the sample. Fitting the respiration data with a double exponential decay model revealed a fast carbon flush during the first three weeks of the experiment. Solid-state 13C NMR spectroscopy evidenced the contribution of aromatic moieties of the PyOM to this initial carbon release and to the biosynthesis of new microbial biomass. Considering the loss of microbiologically easily available fresh litter by wildfires, this relatively labile PyOM fraction may contribute to a fast recovery of a fire-affected site. The input of PyOM resulted in an increase of the mean residence time (MRT) of the slow OM pool of the soil by a factor of 3-4 to approximately 40 years. Assuming that under field conditions, the microbial activity corresponds to approximately 10% of the value observed under optimal laboratory conditions, MRTs of 500-600 years were estimated for the slow PyOM pool. The fact that these times are only 5-6 times longer than those calculated for fire-unaffected SOM rises doubts about the presumed big influence of PyOM as an additional C-sink in soils. On the other hand, although being small the difference in turnover rates is evident and has some major implication with respect to long-term alteration of the chemical composition of OM in fire-affected soils. In case of a reduced input of fresh litter, the preferential degradation of fire-unaffected SOM yields in a selective preservation of PyOM. To what extent this can alter soil properties, has still to be elucidated. In cultivated soils rarely affected by fire or with low charcoal input after burning of harvest, the impact of PyOM accumulation may be of minor importance. On the other hand, for soils regularly amended with high amounts of biochar or subjected to frequent natural or prescribed burnings, it may be an important factor.", "keywords": ["Respiration experiments", "Biochar", "Soil organic matter turnover", "Forest fires", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Solid-state NMR spectroscopy", "04 agricultural and veterinary sciences", "Virtual fractionation of SOM", "15. Life on land", "Pyrogenic organic matter"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2012.02.021"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2012.02.021", "name": "item", "description": "10.1016/j.soilbio.2012.02.021", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2012.02.021"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-01-01T00:00:00Z"}}, {"id": "10.1016/j.still.2006.07.009", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:30Z", "type": "Journal Article", "created": "2006-09-08", "title": "Storage And Forms Of Organic Carbon In A No-Tillage Under Cover Crops System On Clayey Oxisol In Dryland Rice Production (Cerrados, Brazil)", "description": "The management and enhancement of soil organic carbon (SOC) is very important for agriculture (fertility) as well as for the environment (carbon (C) sequestration). Consequently, changes in soil management may alter SOC content. No-tillage (NT) practices are potential ways to increase SOC. We studied the SOC from agricultural soils in the Cerrados in Central Brazil. We compared two different tillage systems: conservation agriculture with no-tillage under cover crops (NT) and disc tillage (DT) for 5 years in a context of rainfed rice production. The soil is a dark red oxisol with high clay content (about 40%). The objectives of the study were: (i) to evaluate the short-term (5 years) impact of tillage systems on SOC stocks in an oxisol and (ii) to better understand the dynamics of SOC in different fractions of this soil. We first studied the initial situation in 1998, and compared it to the 2003 situation. NT with cover crop (Crotalaria) was found to increase the storage of C in the topsoil layer (0-10 cm) compared to DT. The difference observed for the 0-10 cm layer under NT in comparison with DT represented C enrichment under no-tillage amounting to 0.35 Mg C ha-1 year-1 and corresponding to less than 10% of cover crops residues returned to the soil. A particle-size fractionation of soil organic matter (SOM) showed that differences in total SOC between NT and DT mainly affected the 0-2 \u00b5m fraction and, to a smaller extent the 2-20 \u00b5m fraction. This specific enrichment of SOC in the silt and clay fraction was attributed to (i) the storage of a water soluble C in the field and (ii) the effect of soil biota and especially fauna activity. The mean residence time of carbon associated with the fine fractions being rather long, it might be assumed that the preferential storage in fine fractions resulted in a long-term carbon storage. This study suggests a positive short-term effect of a no-tillage system on C sequestration in an oxisol. \u00a9 2006 Elsevier B.V. All rights reserved", "keywords": ["P33 - Chimie et physique du sol", "http://aims.fao.org/aos/agrovoc/c_2858", "Oryza sativa", "fractionnement", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "SOIL ORGANIC CARBON", "01 natural sciences", "630", "CERRADOS", "PARTICLE-SIZE FRACTIONATION OF SOM", "CARBON SEQUESTRATION", "culture sous couvert v\u00e9g\u00e9tal", "no tillage", "OXISOL", "ferralsol", "http://aims.fao.org/aos/agrovoc/c_1301", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "http://aims.fao.org/aos/agrovoc/c_8511", "http://aims.fao.org/aos/agrovoc/c_35657", "0105 earth and related environmental sciences", "F07 - Fa\u00e7ons culturales", "2. Zero hunger", "Cerrados", "http://aims.fao.org/aos/agrovoc/c_1977", "non-travail du sol", "04 agricultural and veterinary sciences", "15. Life on land", "carbon sequestration", "http://aims.fao.org/aos/agrovoc/c_331583", "particle size fractionation of SOM", "s\u00e9questration du carbone", "http://aims.fao.org/aos/agrovoc/c_3074", "oxisol", "http://aims.fao.org/aos/agrovoc/c_1070", "13. Climate action", "http://aims.fao.org/aos/agrovoc/c_25706", "http://aims.fao.org/aos/agrovoc/c_5438", "0401 agriculture", " forestry", " and fisheries", "NO-TILLAGE", "Crotalaria", "carbone", "Brazil", "RIZ", "mati\u00e8re organique du sol"]}, "links": [{"href": "https://doi.org/10.1016/j.still.2006.07.009"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2006.07.009", "name": "item", "description": "10.1016/j.still.2006.07.009", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2006.07.009"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-05-01T00:00:00Z"}}, {"id": "10.1016/j.still.2015.05.010", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:38Z", "type": "Journal Article", "created": "2015-06-03", "title": "Beneficial Effects Of Reduced Tillage And Green Manure On Soil Aggregation And Stabilization Of Organic Carbon In A Mediterranean Agroecosystem", "description": "Abstract Semiarid Mediterranean agroecosystems need the implementation of sustainable land management (SLM) practices in order to maintain acceptable levels of soil organic matter (SOM). The application of SLM practices helps to maintain soil structure and physical-chemical protection of soil organic carbon (SOC), hence improving soil carbon sequestration and mitigating CO 2 emissions to the atmosphere. In an organic, rain-fed almond ( Prunus dulcis Mill., var. Ferragnes) orchard under reduced tillage (RT), as the habitual management practice during the 14 years immediately preceding the experiment, we studied the effect of two agricultural management practices on soil aggregate distribution and SOC stabilization after four years of implementation. The implemented practices were (1) reduced tillage with a mix of Vicia sativa L. and Avena sativa L. as green manure (RTG) and (2) no-tillage (NT). Four aggregate size classes were differentiated by wet sieving (large and small macroaggregates, microaggregates, and the silt plus clay fraction), and the microaggregates occluded within small macroaggregates (SMm) were isolated. In addition, three organic C fractions were separated within the small macroaggregates and microaggregates, using a density fractionation method: free light fraction (free LF-C), intra-aggregate particulate OM (iPOM-C), and organic C associated with the mineral fraction (mineral-C). The results show that the combination of reduced tillage plus green manure (RTG) was the most-efficient SLM practice for SOC sequestration. The total SOC increased by about 14% in the surface layer (0\u20135\u00a0cm depth) when compared to RT. Furthermore, green manure counteracted the effect of tillage on soil aggregate rupture. The plant residue inputs from green manure and their incorporation into the soil by reduced tillage promoted the formation of new aggregates and activated the subsequent physical-chemical protection of OC. The latter mechanism occurred mainly in the fine iPOM-C occluded within microaggregates and mineral-C occluded within small macroaggregates fractions, which together contributed to an increase of up to 30% in the OC concentration in the bulk soil. No-tillage favored the OC accumulation in the mineral-C within the small macroaggregates and in the fine iPOM-C occluded within microaggregates in the surface layer, and in the mineral-C occluded within the small macroaggregates and microaggregates at 5\u201315\u00a0cm depth, but four years of cessation of tillage were not enough to significantly increase the total OC in the bulk soil.", "keywords": ["2. Zero hunger", "Carbon sequestration | Rain-fed almond orchard | Semiarid agroecosystems | Soil aggregation | Soil organic carbon fractionation | Sustainable land management", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1016/j.still.2015.05.010"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2015.05.010", "name": "item", "description": "10.1016/j.still.2015.05.010", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2015.05.010"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-11-01T00:00:00Z"}}, {"id": "10.1029/2023jg007479", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:05Z", "type": "Journal Article", "created": "2024-01-19", "title": "Selective Sorting and Degradation of Permafrost Organic Matter in the Nearshore Zone of Herschel Island (Yukon, Canada)", "description": "Abstract
Erosion of permafrost coasts due to climate warming releases large quantities of organic carbon (OC) into the Arctic Ocean. While burial of permafrost OC in marine sediments potentially limits degradation, resuspension of sediments in the nearshore zone potentially enhances degradation and greenhouse gas production, adding to the \uffe2\uff80\uff9cpermafrost carbon feedback.\uffe2\uff80\uff9d Recent studies, focusing on bulk sediments, suggest that permafrost OC derived from coastal erosion is predominantly deposited close to shore. However, bulk approaches disregard sorting processes in the coastal zone, which strongly influence the OC distribution and fate. We studied soils and sediments along a transect from the fast\uffe2\uff80\uff90eroding shoreline of Herschel Island\uffe2\uff80\uff94Qikiqtaruk (Yukon, Canada) to a depositional basin offshore. Sample material was fractionated by density (1.8\uffc2\uffa0g\uffc2\uffa0cm\uffe2\uff88\uff923) and size (63\uffc2\uffa0\uffce\uffbcm), separating loose OC from mineral\uffe2\uff80\uff90associated OC. Each fraction was analyzed for element content (TOC, TN), carbon isotopes (\uffce\uffb413C, \uffce\uff9414C), molecular biomarkers (n\uffe2\uff80\uff90alkanes, n\uffe2\uff80\uff90alkanoic acids, lignin phenols, cutin acids), and mineral surface area. The OC partitioning between fractions changes considerably along the transect, highlighting the importance of hydrodynamic sorting in the nearshore zone. Additionally, OC and biomarker loadings decrease along the land\uffe2\uff80\uff90ocean transect, indicating significant loss of OC during transport. However, molecular proxies for degradation show contrasting trends, suggesting that OC losses are not always well reflected in its degradation state. This study, using fraction partitioning that crosses land\uffe2\uff80\uff90ocean boundaries in a way not done before, aids to disentangle sorting processes from degradation patterns, and provides quantitative insight into losses of thawed and eroded permafrost OC.The triple oxygen isotope signature \uffce\uff9417O in atmospheric CO2, also known as its \uffe2\uff80\uff9c17O excess,\uffe2\uff80\uff9d has been proposed as a tracer for gross primary production (the gross uptake of CO2 by vegetation through photosynthesis). We present the first global 3\uffe2\uff80\uff90D model simulations for \uffce\uff9417O in atmospheric CO2 together with a detailed model description and sensitivity analyses. In our 3\uffe2\uff80\uff90D model framework we include the stratospheric source of \uffce\uff9417O in CO2 and the surface sinks from vegetation, soils, ocean, biomass burning, and fossil fuel combustion. The effect of oxidation of atmospheric CO on \uffce\uff9417O in CO2 is also included in our model. We estimate that the global mean \uffce\uff9417O (defined as with \uffce\uffbbRL = 0.5229) of CO2 in the lowest 500\uffc2\uffa0m of the atmosphere is 39.6\uffc2\uffa0per meg, which is \uffe2\uff88\uffbc20\uffc2\uffa0per meg lower than estimates from existing box models. We compare our model results with a measured stratospheric \uffce\uff9417O in CO2 profile from Sodankyl\uffc3\uffa4 (Finland), which shows good agreement. In addition, we compare our model results with tropospheric measurements of \uffce\uff9417O in CO2 from G\uffc3\uffb6ttingen (Germany) and Taipei (Taiwan), which shows some agreement but we also find substantial discrepancies that are subsequently discussed. Finally, we show model results for Zotino (Russia), Mauna Loa (United States), Manaus (Brazil), and South Pole, which we propose as possible locations for future measurements of \uffce\uff9417O in tropospheric CO2 that can help to further increase our understanding of the global budget of \uffce\uff9417O in atmospheric CO2.
", "keywords": ["CARBONIC-ANHYDRASE ACTIVITY", "550", "STRATOSPHERIC CO2", "STOMATAL CONDUCTANCE", "TRACER", "stable isotopes", "MASS", "carbon dioxide (CO)", "01 natural sciences", "7. Clean energy", "DIOXIDE EXCHANGE", "O excess (\u0394O)", "3-DIMENSIONAL SYNTHESIS", "carbon dioxide (CO2)", "carbon cycle", "O-17 excess (Delta O-17)", "SDG 13 - Climate Action", "SDG 14 - Life Below Water", "Research Articles", "0105 earth and related environmental sciences", "O-18 CONTENT", "info:eu-repo/classification/ddc/550", "mass-independent fractionation (MIF)", "ddc:550", "gross primary production (GPP)", "15. Life on land", "Earth sciences", "13. Climate action", "MODEL TM5", "17O excess (\u039417O)", "FIRE EMISSIONS"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2019JD030387"}, {"href": "https://doi.org/10.1029/2019jd030387"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Atmospheres", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2019jd030387", "name": "item", "description": "10.1029/2019jd030387", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2019jd030387"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-04T00:00:00Z"}}, {"id": "10.1038/ncomms8617", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:10Z", "type": "Journal Article", "created": "2015-07-03", "title": "Extensive volatile loss during formation and differentiation of the Moon", "description": "AbstractLow estimated lunar volatile contents, compared with Earth, are a fundamental observation for Earth\uffe2\uff80\uff93Moon system formation and lunar evolution. Here we present zinc isotope and abundance data for lunar crustal rocks to constrain the abundance of volatiles during the final stages of lunar differentiation. We find that ferroan anorthosites are isotopically heterogeneous, with some samples exhibiting high \uffce\uffb466Zn, along with alkali and magnesian suite samples. Since the plutonic samples were formed in the lunar crust, they were not subjected to degassing into vacuum. Instead, their compositions are consistent with enrichment of the silicate portions of the Moon in the heavier Zn isotopes. Because of the difference in \uffce\uffb466Zn between bulk silicate Earth and lunar basalts and crustal rocks, the volatile loss likely occurred in two stages: during the proto-lunar disk stage, where a fraction of lunar volatiles accreted onto Earth, and from degassing of a differentiating lunar magma ocean, implying the possibility of isolated, volatile-rich regions in the Moon\uffe2\uff80\uff99s interior.
", "keywords": ["2. Zero hunger", "ISOTOPE FRACTIONATION", "ORIGIN", "IRON", "COPPER", "01 natural sciences", "Article", "[SDU] Sciences of the Universe [physics]", "ZINC", "ABUNDANCES", "13. Climate action", "LUNAR VOLCANIC GLASSES", "WATER", "EARTH", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://www.nature.com/articles/ncomms8617.pdf"}, {"href": "https://doi.org/10.1038/ncomms8617"}, {"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": "10.1038/ncomms8617", "name": "item", "description": "10.1038/ncomms8617", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/ncomms8617"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-07-03T00:00:00Z"}}, {"id": "10.1038/s41467-017-00192-5", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:11Z", "type": "Journal Article", "created": "2017-08-02", "title": "Zhamanshin astrobleme provides evidence for carbonaceous chondrite and post-impact exchange between ejecta and Earth\u2019s atmosphere", "description": "AbstractChemical fingerprints of impacts are usually compromised by extreme conditions in the impact plume, and the contribution of projectile matter to impactites does not often exceed a fraction of per cent. Here we use chromium and oxygen isotopes to identify the impactor and impact-plume processes for Zhamanshin astrobleme, Kazakhstan. \uffce\uffb554Cr values up to 1.54 in irghizites, part of the fallback ejecta, represent the54Cr-rich extremity of the Solar System range and suggest a CI-like chondrite impactor. \uffce\uff9417O values as low as \uffe2\uff88\uff920.22\uffe2\uff80\uffb0 in irghizites, however, are incompatible with a CI-like impactor. We suggest that the observed17O depletion in irghizites relative to the terrestrial range is caused by partial isotope exchange with atmospheric oxygen (\uffce\uff9417O\uffe2\uff80\uff89=\uffe2\uff80\uff89\uffe2\uff88\uff920.47\uffe2\uff80\uffb0) following material ejection. In contrast, combined \uffce\uff9417O\uffe2\uff80\uff93\uffce\uffb554Cr data for central European tektites (distal ejecta) fall into the terrestrial range and neither impactor fingerprint nor oxygen isotope exchange with the atmosphere are indicated.
", "keywords": ["OXYGEN-ISOTOPE COMPOSITION", "NORDLINGER RIES IMPACT", "ORIGIN", "FRACTIONATION", "carbonaceous chondrite; post-impact exchange; ejecta; Earth\u2019s atmosphere", "Science", "Q", "TARGET ROCKS", "[SDU.ASTR.EP] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]", "551", "01 natural sciences", "Article", "IVORY-COAST TEKTITES", "13. Climate action", "CRATER", "GLASSES", "ELEMENTS", "WATER", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://www.nature.com/articles/s41467-017-00192-5.pdf"}, {"href": "https://doi.org/10.1038/s41467-017-00192-5"}, {"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": "10.1038/s41467-017-00192-5", "name": "item", "description": "10.1038/s41467-017-00192-5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41467-017-00192-5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-08-09T00:00:00Z"}}, {"id": "10.1038/s41550-017-0055", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:13Z", "type": "Journal Article", "created": "2017-03-20", "title": "Early Solar System irradiation quantified by linked vanadium and beryllium isotope variations in meteorites", "description": "X-ray emission in young stellar objects (YSOs) is orders of magnitude more intense than in main sequence stars1,2, suggestive of cosmic ray irradiation of surrounding accretion disks. Protoplanetary disk irradiation has been detected around YSOs by HERSCHEL3. In our solar system, short-lived 10Be (half-life = 1.39 My4), which cannot be produced by stellar nucleosynthesis, was discovered in the oldest solar system solids, the calcium-aluminium-rich inclusions (CAIs)5. The high 10Be abundance, as well as detection of other irradiation tracers6,7, suggest 10Be likely originates from cosmic ray irradiation caused by solar flares8. Nevertheless, the nature of these flares (gradual or impulsive), the target (gas or dust), and the duration and location of irradiation remain unknown. Here we use the vanadium isotopic composition, together with initial 10Be abundance to quantify irradiation conditions in the early Solar System9. For the initial 10Be abundances recorded in CAIs, 50V excesses of a few per mil relative to chondrites have been predicted10,11. We report 50V excesses in CAIs up to 4.4 per mil that co-vary with 10Be abundance. Their co-variation dictates that excess 50V and 10Be were synthesised through irradiation of refractory dust. Modelling of the production rate of 50V and 10Be demonstrates that the dust was exposed to solar cosmic rays produced by gradual flares for less than 300 years at about 0.1 au from the protoSun.", "keywords": ["FOS: Physical sciences", "[SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph]", "01 natural sciences", "7. Clean energy", "ALLENDE CAIS", "[SDU] Sciences of the Universe [physics]", "0103 physical sciences", "EARTH", ":SHORT-LIVED BE-10", "RICH", "EXTINCT RADIOACTIVITIES", "0105 earth and related environmental sciences", "Earth and Planetary Astrophysics (astro-ph.EP)", "ORIGIN", "FRACTIONATION", "Sun", "Vanadium", "COSMIC-RAYS", "13. Climate action", "Irradiation", "Solar System", "Beryllium", "REFRACTORY INCLUSIONS", "INITIAL ABUNDANCE", "Meteorites", "Astrophysics - Earth and Planetary Astrophysics"]}, "links": [{"href": "https://www.nature.com/articles/s41550-017-0055.pdf"}, {"href": "https://doi.org/10.1038/s41550-017-0055"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Astronomy", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/s41550-017-0055", "name": "item", "description": "10.1038/s41550-017-0055", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41550-017-0055"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-03-20T00:00:00Z"}}, {"id": "10.1038/s41598-017-07305-6", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:16Z", "type": "Journal Article", "created": "2017-07-26", "title": "Theoretical isotopic fractionation of magnesium between chlorophylls", "description": "AbstractMagnesium is the metal at the center of all types of chlorophyll and is thus crucial to photosynthesis. When an element is involved in a biosynthetic pathway its isotopes are fractionated based on the difference of vibrational frequency between the different molecules. With the technical advance of multi-collectors plasma-mass-spectrometry and improvement in analytical precision, it has recently been found that two types of chlorophylls (a and b) are isotopically distinct. These results have very significant implications with regards to the use of Mg isotopes to understand the biosynthesis of chlorophyll. Here we present theoretical constraints on the origin of these isotopic fractionations through ab initio calculations. We present the fractionation factor for chlorphyll a, b, d, and f. We show that the natural isotopic variations among chlorophyll a and b are well explained by isotopic fractionation under equilibrium, which implies exchanges of Mg during the chlorophyll cycle. We predict that chlorophyll d and f should be isotopically fractionated compared to chlorophyll a and that this could be used in the future to understand the biosynthesis of these molecules.
", "keywords": ["Chlorophyll", "0301 basic medicine", "0303 health sciences", "RELEVANT", "Molecular Structure", "PHOTOSYNTHESIS", "Science", "Q", "POTENTIALS", "R", "Chemical Fractionation", "Fe", "Article", "3. Good health", "[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry", "[CHIM.THEO] Chemical Sciences/Theoretical and/or physical chemistry", "03 medical and health sciences", "Isotopes", "Zn", "Medicine", "PLANTS", "Magnesium", "[SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry", " Molecular Biology/Biochemistry [q-bio.BM]", "GEOCHEMISTRY", "[SDV.BBM.BC] Life Sciences [q-bio]/Biochemistry", " Molecular Biology/Biochemistry [q-bio.BM]"], "contacts": [{"organization": "Fr\u00e9d\u00e9ric Moynier, Fr\u00e9d\u00e9ric Moynier, Toshiyuki Fujii,", "roles": ["creator"]}]}, "links": [{"href": "https://www.nature.com/articles/s41598-017-07305-6.pdf"}, {"href": "https://doi.org/10.1038/s41598-017-07305-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/s41598-017-07305-6", "name": "item", "description": "10.1038/s41598-017-07305-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41598-017-07305-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-08-01T00:00:00Z"}}, {"id": "10.1038/srep08280", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:19Z", "type": "Journal Article", "created": "2015-02-06", "title": "Convergence Of Soil Nitrogen Isotopes Across Global Climate Gradients", "description": "AbstractQuantifying global patterns of terrestrial nitrogen (N) cycling is central to predicting future patterns of primary productivity, carbon sequestration, nutrient fluxes to aquatic systems and climate forcing. With limited direct measures of soil N cycling at the global scale, syntheses of the 15N:14N ratio of soil organic matter across climate gradients provide key insights into understanding global patterns of N cycling. In synthesizing data from over 6000 soil samples, we show strong global relationships among soil N isotopes, mean annual temperature (MAT), mean annual precipitation (MAP) and the concentrations of organic carbon and clay in soil. In both hot ecosystems and dry ecosystems, soil organic matter was more enriched in 15N than in corresponding cold ecosystems or wet ecosystems. Below a MAT of 9.8\uffc2\uffb0C, soil \uffce\uffb415N was invariant with MAT. At the global scale, soil organic C concentrations also declined with increasing MAT and decreasing MAP. After standardizing for variation among mineral soils in soil C and clay concentrations, soil \uffce\uffb415N showed no consistent trends across global climate and latitudinal gradients. Our analyses could place new constraints on interpretations of patterns of ecosystem N cycling and global budgets of gaseous N loss.
", "keywords": ["N-15 Natural-Abundance", "550", "Ecosystem ecology", "TROPICAL FORESTS", "Organic chemistry", "Suelo", "Nitrogen cycle", "01 natural sciences", "Nutrient cycle", "cycle de l'azote", "CARBON", "Agricultural and Biological Sciences", "Soil", "Terrestrial ecosystem", "Isotopes", "https://purl.org/becyt/ford/1.6", "Soil water", "SDG 13 - Climate Action", "N-15 NATURAL-ABUNDANCE", "Climate change", "croisement de donn\u00e9es", "Milieux et Changements globaux", "SDG 15 \u2013 Leben an Land", "Global change", "SDG 15 - Life on Land", "2. Zero hunger", "106022 Mikrobiologie", "Climatic Factors", "Tropical Forests", "Ecology", "Geography", "Nitr\u00f3geno", "Nutrient Cycling", "FRACTIONATION", "Litter Decomposition", "ECOSYSTEM ECOLOGY", "Life Sciences", "ecosystem ecology", "Cycling", "Forestry", "Is\u00f3topos", "Carbon cycle", "04 agricultural and veterinary sciences", "Nitrogen Cycle", "Soil carbon", "6. Clean water", "Organic-Matter", "Earth and Planetary Sciences", "ORGANIC-MATTER", "Chemistry", "PRECIPITATION", "SDG 13 \u2013 Ma\u00dfnahmen zum Klimaschutz", "Physical Sciences", "106022 Microbiology", "carbone du sol", "Stable Isotope Analysis of Groundwater and Precipitation", "Ecosystem Functioning", "570", "STABLE ISOTOPE", "Biogeochemical Cycling of Nutrients in Aquatic Ecosystems", "Stable isotope analysis", "Nitrogen", "[SDE.MCG]Environmental Sciences/Global Changes", "Soil Science", "stable isotope analysis;ecosystem ecology", "Article", "Environmental science", "LITTER DECOMPOSITION", "sol min\u00e9ral", "INORGANIC NITROGEN", "Geochemistry and Petrology", "stable isotope analysis", "Carbono", "Environmental Chemistry", "Factores Clim\u00e1ticos", "https://purl.org/becyt/ford/1", "Biology", "Ecosystem", "0105 earth and related environmental sciences", "Soil science", "Soil organic matter", "Soil Fertility", "climat", "AVAILABILITY", "Nitrogen Dynamics", "15. Life on land", "Carbon", "Inorganic", "NITROGEN", "MODEL", "[SDE.MCG] Environmental Sciences/Global Changes", "13. Climate action", "FOS: Biological sciences", "Environmental Science", "PATTERNS", "0401 agriculture", " forestry", " and fisheries", "Soil Carbon Dynamics and Nutrient Cycling in Ecosystems"]}, "links": [{"href": "https://scholars.unh.edu/context/faculty_pubs/article/1042/viewcontent/srep08280.pdf"}, {"href": "https://edoc.unibas.ch/37215/1/srep08280.pdf"}, {"href": "https://doi.org/10.1038/srep08280"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/srep08280", "name": "item", "description": "10.1038/srep08280", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/srep08280"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-02-06T00:00:00Z"}}, {"id": "10.1038/srep44255", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:20Z", "type": "Journal Article", "created": "2017-03-09", "title": "Calcium isotope fractionation between aqueous compounds relevant to low-temperature geochemistry, biology and medicine", "description": "AbstractStable Ca isotopes are fractionated between bones, urine and blood of animals and between soils, roots and leaves of plants by >1000\uffe2\uff80\uff89ppm for the 44Ca/40Ca ratio. These isotopic variations have important implications to understand Ca transport and fluxes in living organisms; however, the mechanisms of isotopic fractionation are unclear. Here we present ab initio calculations for the isotopic fractionation between various aqueous species of Ca and show that this fractionation can be up to 3000\uffe2\uff80\uff89ppm. We show that the Ca isotopic fractionation between soil solutions and plant roots can be explained by the difference of isotopic fractionation between the different first shell hydration degree of Ca2+ and that the isotopic fractionation between roots and leaves is controlled by the precipitation of Ca-oxalates. The isotopic fractionation between blood and urine is due to the complexation of heavy Ca with citrate and oxalates in urine. Calculations are presented for additional Ca species that may be useful to interpret future Ca isotopic measurements.
", "keywords": ["Calcium Isotopes", "Chemical Fractionation", "[SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph]", "FE", "Plant Roots", "01 natural sciences", "Article", "Bone and Bones", "[SDU] Sciences of the Universe [physics]", "Soil", "PHOSPHATE", "Animals", "Humans", "ION", "MONITOR", "0105 earth and related environmental sciences", "ENVIRONMENT", "CA", "PLASMA", "Temperature", "Plants", "6. Clean water", "3. Good health", "Plant Leaves", "MAGNESIUM", "13. Climate action", "OXALATE", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "BONE"], "contacts": [{"organization": "Moynier, Fr\u00e9d\u00e9ric, Fujii, Toshiyuki,", "roles": ["creator"]}]}, "links": [{"href": "https://www.nature.com/articles/srep44255.pdf"}, {"href": "https://doi.org/10.1038/srep44255"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/srep44255", "name": "item", "description": "10.1038/srep44255", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/srep44255"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-03-09T00:00:00Z"}}, {"id": "10.1080/02626667.2022.2030866", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:46Z", "type": "Journal Article", "created": "2022-02-02", "title": "Partitioning evapotranspiration using water stable isotopes and information from lysimeter experiments", "description": "Open AccessPeer reviewed", "keywords": ["Evaporation", "0208 environmental biotechnology", "0207 environmental engineering", "02 engineering and technology", "Mass balance", "Isotopic fractionation", "Soybean", "HYDRUS-1D", "6. Clean water", "Transpiration"]}, "links": [{"href": "https://www.tandfonline.com/doi/pdf/10.1080/02626667.2022.2030866"}, {"href": "https://doi.org/10.1080/02626667.2022.2030866"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Hydrological%20Sciences%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1080/02626667.2022.2030866", "name": "item", "description": "10.1080/02626667.2022.2030866", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1080/02626667.2022.2030866"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-02-21T00:00:00Z"}}, {"id": "10.1111/gcb.12666", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:20Z", "type": "Journal Article", "created": "2014-06-21", "title": "Interactive Effects Of Elevated Co2 And Nitrogen Deposition On Fatty Acid Molecular And Isotope Composition Of Above- And Belowground Tree Biomass And Forest Soil Fractions", "description": "AbstractAtmospheric carbon dioxide (CO2) and reactive nitrogen (N) concentrations have been increasing due to human activities and impact the global carbon (C) cycle by affecting plant photosynthesis and decomposition processes in soil. Large amounts of C are stored in plants and soils, but the mechanisms behind the stabilization of plant\uffe2\uff80\uff90 and microbial\uffe2\uff80\uff90derived organic matter (OM) in soils are still under debate and it is not clear how N deposition affects soil OM dynamics. Here, we studied the effects of 4\uffc2\uffa0years of elevated (13C\uffe2\uff80\uff90depleted) CO2 and N deposition in forest ecosystems established in open\uffe2\uff80\uff90top chambers on composition and turnover of fatty acids (FAs) in plants and soils. FAs served as biomarkers for plant\uffe2\uff80\uff90 and microbial\uffe2\uff80\uff90derived OM in soil density fractions. We analyzed above\uffe2\uff80\uff90 and belowground plant biomass of beech and spruce trees as well as soil density fractions for the total organic C and FA molecular and isotope (\uffce\uffb413C) composition. FAs did not accumulate relative to total organic C in fine mineral fractions, showing that FAs are not effectively stabilized by association with soil minerals. The \uffce\uffb413C values of FAs in plant biomass increased under high N deposition. However, the N effect was only apparent under elevated CO2 suggesting a N limitation of the system. In soil fractions, only isotope compositions of short\uffe2\uff80\uff90chain FAs (C16+18) were affected. Fractions of \uffe2\uff80\uff98new\uffe2\uff80\uff99 (experimental\uffe2\uff80\uff90derived) FAs were calculated using isotope depletion in elevated CO2 plots and decreased from free light to fine mineral fractions. \uffe2\uff80\uff98New\uffe2\uff80\uff99 FAs were higher in short\uffe2\uff80\uff90chain compared to long\uffe2\uff80\uff90chain FAs (C20\uffe2\uff88\uff9230), indicating a faster turnover of short\uffe2\uff80\uff90chain compared to long\uffe2\uff80\uff90chain FAs. Increased N deposition did not significantly affect the quantity of \uffe2\uff80\uff98new\uffe2\uff80\uff99 FAs in soil fractions, but showed a tendency of increased amounts of \uffe2\uff80\uff98old\uffe2\uff80\uff99 (pre\uffe2\uff80\uff90experimental) C suggesting that decomposition of \uffe2\uff80\uff98old\uffe2\uff80\uff99 C is retarded by high N inputs.
", "keywords": ["UFSP13-8 Global Change and Biodiversity", "2306 Global and Planetary Change", "Chemical Fractionation", "Forests", "2300 General Environmental Science", "Soil", "Fagus", "Environmental Chemistry", "Biomass", "Photosynthesis", "Picea", "General Environmental Science", "2. Zero hunger", "Global and Planetary Change", "Analysis of Variance", "Carbon Isotopes", "Ecology", "Atmosphere", "Fatty Acids", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Reactive Nitrogen Species", "13. Climate action", "2304 Environmental Chemistry", "570 Life sciences; biology", "0401 agriculture", " forestry", " and fisheries", "2303 Ecology"]}, "links": [{"href": "https://doi.org/10.1111/gcb.12666"}, {"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": "10.1111/gcb.12666", "name": "item", "description": "10.1111/gcb.12666", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.12666"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-07-08T00:00:00Z"}}, {"id": "10.1126/sciadv.aba3269", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:53Z", "type": "Journal Article", "created": "2020-06-03", "title": "Calcium isotopic evidence for the mantle sources of carbonatites", "description": "Melting of recycled carbonate in the mantle explains the origin of carbonatitic magmas.
", "keywords": ["SILICATE ROCKS", "550", "CA CYCLE", "ORIGIN", "FRACTIONATION", "500", "NOBLE-GAS", "OLDOINYO-LENGAI", "01 natural sciences", "EVOLUTION", "12. Responsible consumption", "SUBDUCTION", "[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "13. Climate action", "CLINOPYROXENE", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "SERPENTINITES", "14. Life underwater", "Research Articles", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1126/sciadv.aba3269"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20Advances", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1126/sciadv.aba3269", "name": "item", "description": "10.1126/sciadv.aba3269", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1126/sciadv.aba3269"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-06-05T00:00:00Z"}}, {"id": "10.1111/j.1475-2743.2011.00341.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:42Z", "type": "Journal Article", "created": "2011-04-16", "title": "Land-Use Effects On The Distribution Of Soil Organic Carbon Within Particle-Size Fractions Of Volcanic Soils In The Transmexican Volcanic Belt (Mexico)", "description": "AbstractThe aim of this study was to determine the effect of land\uffe2\uff80\uff90use and forest cover depletion on the distribution of soil organic carbon (SOC) within particle\uffe2\uff80\uff90size fractions in a volcanic soil. Emphasis was given to the thermal properties of soils. Six representative sites in Mexico were selected in an area dominated by Andosols: a grassland site, four forested sites with different levels of degradation and an agricultural site. Soils were fractionated using ultrasonic energy until complete dispersion was achieved. The particle\uffe2\uff80\uff90size fractions were coarse sand, fine sand, silt, clay and particulate organic matter from the coarse sand sized fraction (POM\uffe2\uff80\uff90CS) and fine sand (POM\uffe2\uff80\uff90FS). Soil organic carbon decreased by 70% after forest conversion to cropland and long\uffe2\uff80\uff90term cultivation; forest cover loss resulted in a decrease in SOC of up to 60%. The grassland soil contained 45% more SOC than the cropland one. Soil organic carbon was mainly associated with the silt\uffe2\uff80\uff90size fraction; the most sensitive fractions to land\uffe2\uff80\uff90use change and forest cover depletion were POM followed by SOC associated with the silt and clay\uffe2\uff80\uff90sized fractions. Particulate organic matter can be used as an early indicator of SOC loss. The C lost from the clay and silt\uffe2\uff80\uff90sized fractions was thermally labile; therefore, the SOC stored in the more degraded forest soils was more recalcitrant (thermally resistant). Only the transformation of forest to agricultural land produced a similar loss of thermally stable C associated with the silt\uffe2\uff80\uff90sized fraction.
", "keywords": ["2. Zero hunger", "Soil organic matter", "thermal analyses", "550", "forest cover depletion", "[SDU.STU.GM] Sciences of the Universe [physics]/Earth Sciences/Geomorphology", "soil physical fractionation", "Andosols", "Soil physical fractionation", "Thermal analyses", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "630", "soil organic matter", "0401 agriculture", " forestry", " and fisheries", "[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology", "Forest cover depletion", "Andosol", "agriculture"]}, "links": [{"href": "https://doi.org/10.1111/j.1475-2743.2011.00341.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Use%20and%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1475-2743.2011.00341.x", "name": "item", "description": "10.1111/j.1475-2743.2011.00341.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1475-2743.2011.00341.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-04-15T00:00:00Z"}}, {"id": "10.1111/maps.12922", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:47Z", "type": "Journal Article", "created": "2017-07-27", "title": "Implications for behavior of volatile elements during impacts-Zinc and copper systematics in sediments from the Ries impact structure and central European tektites", "description": "AbstractMoldavites are tektites genetically related to the Ries impact structure, located in Central Europe, but the source materials and the processes related to the chemical fractionation of moldavites are not fully constrained. To further understand moldavite genesis, the Cu and Zn abundances and isotope compositions were measured in a suite of tektites from four different substrewn fields (South Bohemia, Moravia, Cheb Basin, Lusatia) and chemically diverse sediments from the surroundings of the Ries impact structure. Moldavites are slightly depleted in Zn (~10\uffe2\uff80\uff9320%) and distinctly depleted in Cu (>90%) relative to supposed sedimentary precursors. Moreover, the moldavites show a wide range in \uffce\uffb466Zn values between 1.7 and 3.7\uffe2\uff80\uffb0 (relative to JMC 3\uffe2\uff80\uff900749 Lyon) and \uffce\uffb465Cu values between 1.6 and 12.5\uffe2\uff80\uffb0 (relative to NIST SRM 976) and are thus enriched in heavy isotopes relative to their possible parent sedimentary sources (\uffce\uffb466Zn\uffc2\uffa0=\uffc2\uffa0\uffe2\uff88\uff920.07 to +0.64\uffe2\uff80\uffb0; \uffce\uffb465Cu\uffc2\uffa0=\uffc2\uffa0\uffe2\uff88\uff920.4 to +0.7\uffe2\uff80\uffb0). In particular, the Cheb Basin moldavites show some of the highest \uffce\uffb465Cu values (up to 12.5\uffe2\uff80\uffb0) ever observed in natural samples. The relative magnitude of isotope fractionation for Cu and Zn seen here is opposite to oxygen\uffe2\uff80\uff90poor environments such as the Moon where Zn is significantly more isotopically fractionated than Cu. One possibility is that monovalent Cu diffuses faster than divalent Zn in the reduced melt and diffusion will not affect the extent of Zn isotope fractionation. These observations imply that the capability of forming a redox environment may aid in volatilizing some elements, accompanied by isotope fractionation, during the impact process. The greater extent of elemental depletion, coupled with isotope fractionation of more refractory Cu relative to Zn, may also hinge on the presence of carbonyl species of transition metals and electromagnetic charge, which could exist in the impact\uffe2\uff80\uff90induced high\uffe2\uff80\uff90velocity jet of vapor and melts.
", "keywords": ["550", "GRANITES", "NDAS", "Ries crater", "01 natural sciences", "Tektites", "ZINC", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "QE", "14. Life underwater", "STABLE-ISOTOPE GEOCHEMISTRY", "QC", "0105 earth and related environmental sciences", "Copper isotopes", "ORIGIN", "AUSTRALASIAN TEKTITES", "FRACTIONATION", "IRON", "500", "LACHLAN FOLD BELT", "Ries area sediments", "QE Geology", "Impact", "QC Physics", "13. Climate action", "Volatile loss", "ZN", "Isotope fractionation", "Zinc isotopes", "CU"]}, "links": [{"href": "http://onlinelibrary.wiley.com/wol1/doi/10.1111/maps.12922/fullpdf"}, {"href": "https://doi.org/10.1111/maps.12922"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Meteoritics%20%26amp%3B%20Planetary%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/maps.12922", "name": "item", "description": "10.1111/maps.12922", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/maps.12922"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-07-27T00:00:00Z"}}, {"id": "10.1126/sciadv.aar3599", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:52Z", "type": "Journal Article", "created": "2018-09-12", "title": "Nitrogen isotope signature evidences ammonium deprotonation as a common transport mechanism for the AMT-Mep-Rh protein superfamily", "description": "Natural nitrogen isotopic signature reveals deprotonation during ammonium transport across living organisms.
Organic matter plays an important role in many soil properties, and for that reason it is necessary to identify management systems which maintain or increase its concentrations. The aim of the present study was to determine the quality and quantity of organic C in different compartments of the soil fraction in different Amazonian ecosystems. The soil organic matter (FSOM) was fractionated and soil C stocks were estimated in primary forest (PF), pasture (P), secondary succession (SS) and an agroforestry system (AFS). Samples were collected at the depths 0-5, 5-10, 10-20, 20-40, 40-60, 60-80, 80-100, 100-160, and 160-200 cm. Densimetric and particle size analysis methods were used for FSOM, obtaining the following fractions: FLF (free light fraction), IALF (intra-aggregate light fraction), F-sand (sand fraction), F-clay (clay fraction) and F-silt (silt fraction). The 0-5 cm layer contains 60 % of soil C, which is associated with the FLF. The F-clay was responsible for 70 % of C retained in the 0-200 cm depth. There was a 12.7 g kg-1 C gain in the FLF from PF to SS, and a 4.4 g kg-1 C gain from PF to AFS, showing that SS and AFS areas recover soil organic C, constituting feasible C-recovery alternatives for degraded and intensively farmed soils in Amazonia. The greatest total stocks of carbon in soil fractions were, in decreasing order: (101.3 Mg ha-1 of C - AFS) > (98.4 Mg ha-1 of C - FP) > (92.9 Mg ha-1 of C - SS) > (64.0 Mg ha-1 of C - P). The forms of land use in the Amazon influence C distribution in soil fractions, resulting in short- or long-term changes.
", "keywords": ["2. Zero hunger", "uso da terra", "Agriculture (General)", "land use", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "S1-972", "13. Climate action", "soil organic matter", "fracionamento", "soil physical fractions", "0401 agriculture", " forestry", " and fisheries", "mat\u00e9ria org\u00e2nica do solo", "fractionation", "fra\u00e7\u00f5es f\u00edsicas do solo", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Marques, Jean Dalmo de Oliveira, Luiz\u00e3o, Fl\u00e1vio Jesus, Teixeira, Wenceslau Geraldes, Sarrazin, Max, Ferreira, S\u00e1vio Jos\u00e9 Filgueira, Beldini, Troy Patrick, Marques, Elizalane Moura de Ara\u00fajo,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1590/01000683rbcs20150142"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Revista%20Brasileira%20de%20Ci%C3%AAncia%20do%20Solo", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/01000683rbcs20150142", "name": "item", "description": "10.1590/01000683rbcs20150142", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/01000683rbcs20150142"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-02-01T00:00:00Z"}}, {"id": "10.1590/s0100-06832002000200016", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:20:32Z", "type": "Journal Article", "created": "2014-10-01", "title": "Estoques De Carbono E Nitrog\u00eanio E Distribui\u00e7\u00e3o De Fra\u00e7\u00f5es Org\u00e2nicas De Latossolo Do Cerrado Sob Diferentes Sistemas De Cultivo", "description": "Este estudo teve por objetivo avaliar o efeito de sistemas de cultivo sobre os estoques de carbono e nitrog\uffc3\uffaanio e sobre a distribui\uffc3\uffa7\uffc3\uffa3o de fra\uffc3\uffa7\uffc3\uffb5es (leve e pesada) da mat\uffc3\uffa9ria org\uffc3\uffa2nica de Latossolo Vermelho-Amarelo, em experimento da Embrapa Arroz e Feij\uffc3\uffa3o (GO). Os tratamentos amostrados consistiram da combina\uffc3\uffa7\uffc3\uffa3o de dois sistemas de preparo do solo (plantio direto e ara\uffc3\uffa7\uffc3\uffa3o mais gradagem do solo) com duas rota\uffc3\uffa7\uffc3\uffb5es: (1) pousio/arroz - pousio/soja e (2) crotal\uffc3\uffa1ria/arroz - milheto/soja. Como refer\uffc3\uffaancia, foi amostrada tamb\uffc3\uffa9m uma \uffc3\uffa1rea de Cerrado, nas adjac\uffc3\uffaancias do local do experimento. As determina\uffc3\uffa7\uffc3\uffb5es de C e N das diferentes fra\uffc3\uffa7\uffc3\uffb5es org\uffc3\uffa2nicas foram realizadas entre os meses de janeiro e agosto de 2000. Em rela\uffc3\uffa7\uffc3\uffa3o ao Cerrado, houve uma redu\uffc3\uffa7\uffc3\uffa3o de cerca de 50 % nos teores de C e N dos solos cultivados. Os estoques de C e N nas \uffc3\uffa1reas cultivadas n\uffc3\uffa3o se mostraram inferiores nas \uffc3\uffa1reas com revolvimento de solo, em rela\uffc3\uffa7\uffc3\uffa3o \uffc3\uffa0s \uffc3\uffa1reas sob plantio direto. A maior parte (60-90 %) do carbono mostrou-se associada \uffc3\uffa0s fra\uffc3\uffa7\uffc3\uffb5es granulom\uffc3\uffa9tricas mais finas e a ara\uffc3\uffa7\uffc3\uffa3o do solo aumentou esta tend\uffc3\uffaancia. Os teores de C nas fra\uffc3\uffa7\uffc3\uffb5es leves foram reduzidos com a substitui\uffc3\uffa7\uffc3\uffa3o da vegeta\uffc3\uffa7\uffc3\uffa3o de Cerrado pelos agroecossistemas, e essa fra\uffc3\uffa7\uffc3\uffa3o da mat\uffc3\uffa9ria org\uffc3\uffa2nica do solo (MOS) caracterizou-se como o indicador mais sens\uffc3\uffadvel das altera\uffc3\uffa7\uffc3\uffb5es causadas pelos sistemas de cultivo avaliados sobre o teor da MOS.
", "keywords": ["preparo do solo", "2. Zero hunger", "solo sob floresta", "Agriculture (General)", "fracionamento f\u00edsico", "04 agricultural and veterinary sciences", "forest soil", "mat\u00e9ria org\u00e2nica", "S1-972", "rota\u00e7\u00e3o de culturas", "crop rotation", "soil organic matter", "tillage", "physical fractionation", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1590/s0100-06832002000200016"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Revista%20Brasileira%20de%20Ci%C3%AAncia%20do%20Solo", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/s0100-06832002000200016", "name": "item", "description": "10.1590/s0100-06832002000200016", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/s0100-06832002000200016"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2002-06-01T00:00:00Z"}}, {"id": "10.1590/s0100-06832007000600037", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:20:32Z", "type": "Journal Article", "created": "2008-02-28", "title": "Estoques De Carbono E Nitrog\u00eanio E Fra\u00e7\u00f5es Org\u00e2nicas De Latossolo Submetido A Diferentes Sistemas De Uso E Manejo", "description": "O avan\uffc3\uffa7o das fronteiras agr\uffc3\uffadcolas, caracterizado pela substitui\uffc3\uffa7\uffc3\uffa3o de ecossistemas naturais por \uffc3\uffa1reas cultivadas, vem se intensificando nas \uffc3\uffbaltimas d\uffc3\uffa9cadas, acarretando altera\uffc3\uffa7\uffc3\uffb5es na qualidade do solo e na din\uffc3\uffa2mica da mat\uffc3\uffa9ria org\uffc3\uffa2nica do solo (MOS). Assim, o estudo do impacto da ado\uffc3\uffa7\uffc3\uffa3o de diferentes sistemas de manejo \uffc3\uffa9 essencial na defini\uffc3\uffa7\uffc3\uffa3o de melhores estrat\uffc3\uffa9gias de uso do solo. Este estudo teve por objetivo avaliar diferentes fra\uffc3\uffa7\uffc3\uffb5es da MOS e os estoques de C e N de Latossolo Vermelho distrof\uffc3\uffa9rrico t\uffc3\uffadpico muito argiloso submetido a diferentes sistemas de uso e manejo: mata nativa (MTN), eucalipto (EUC), pinus (PIN), pastagem (PAS), milho no sistema de cultivo m\uffc3\uffadnimo (MCM) e milho no sistema plantio convencional (MPC). As amostras de solo foram coletadas em setembro de 2004, nas profundidades de 0-10, 10-20 e 20-40 cm, para avalia\uffc3\uffa7\uffc3\uffa3o dos estoques de carbono org\uffc3\uffa2nico (CO) e N total (NT); de 0-5 e 0-10 cm, para realiza\uffc3\uffa7\uffc3\uffa3o do fracionamento f\uffc3\uffadsico-densim\uffc3\uffa9trico da MO; e de 0-5 cm, para avalia\uffc3\uffa7\uffc3\uffa3o do C da biomassa microbiana (Cmic). O estoque de CO na \uffc3\uffa1rea de eucalipto foi maior do que o determinado na \uffc3\uffa1rea de mata. A propor\uffc3\uffa7\uffc3\uffa3o relativa do CO nas fra\uffc3\uffa7\uffc3\uffb5es da MOS aumentou na seguinte ordem: C-argila > C-silte > C-areia > C FL. A maior parte (> 90 %) do CO est\uffc3\uffa1 associada \uffc3\uffa0 fra\uffc3\uffa7\uffc3\uffa3o pesada da MOS, com valores pr\uffc3\uffb3ximos a 98 % nos sistemas cultivados com milho (MPC e MCM). Em rela\uffc3\uffa7\uffc3\uffa3o aos teores de CO, o Cmic e o C da fra\uffc3\uffa7\uffc3\uffa3o leve (C FL) s\uffc3\uffa3o indicadores mais sens\uffc3\uffadveis das altera\uffc3\uffa7\uffc3\uffb5es decorrentes da ado\uffc3\uffa7\uffc3\uffa3o de diferentes sistemas de uso e manejo sobre os compartimentos da mat\uffc3\uffa9ria org\uffc3\uffa2nica do Latossolo.
", "keywords": ["mudan\u00e7as no uso do solo e reflorestamento", "biomassa microbiana", "uso do solo", "microbial biomass", "land-use change and forestry (LULUCF)", "global climate change", "land use", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "densimetric fractionation", "mudan\u00e7as clim\u00e1ticas globais", "fracionamento f\u00edsico-densim\u00e9trico"]}, "links": [{"href": "https://doi.org/10.1590/s0100-06832007000600037"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Revista%20Brasileira%20de%20Ci%C3%AAncia%20do%20Solo", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/s0100-06832007000600037", "name": "item", "description": "10.1590/s0100-06832007000600037", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/s0100-06832007000600037"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-12-01T00:00:00Z"}}, {"id": "10.5194/bg-17-3903-2020", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:22:45Z", "type": "Journal Article", "created": "2020-07-31", "title": "Leaf-scale quantification of the effect of photosynthetic gas exchange on \u0394<sup>17</sup>O of atmospheric CO<sub>2</sub>", "description": "Abstract. Understanding the processes that affect the triple oxygen isotope composition of atmospheric CO2 during gas exchange can help constrain the interaction and fluxes between the atmosphere and the biosphere. We conducted leaf cuvette experiments under controlled conditions using three plant species. The experiments were conducted at two different light intensities and using CO2 with different \uffce\uff9417O. We directly quantify the effect of photosynthesis on \uffce\uff9417O of atmospheric CO2 for the first time. Our results demonstrate the established theory for \uffce\uffb418O is applicable to \uffce\uff9417O(CO2) at leaf level, and we confirm that the following two key factors determine the effect of photosynthetic gas exchange on the \uffce\uff9417O of atmospheric CO2. The relative difference between \uffce\uff9417O of the CO2 entering the leaf and the CO2 in equilibrium with leaf water and the back-diffusion flux of CO2 from the leaf to the atmosphere, which can be quantified by the cm\uffe2\uff88\uff95ca ratio, where ca is the CO2 mole fraction in the surrounding air and cm is the one at the site of oxygen isotope exchange between CO2 and H2O. At low cm\uffe2\uff88\uff95ca ratios the discrimination is governed mainly by diffusion into the leaf, and at high cm\uffe2\uff88\uff95ca ratios it is governed by back-diffusion of CO2 that has equilibrated with the leaf water. Plants with a higher cm\uffe2\uff88\uff95ca ratio modify the \uffce\uff9417O of atmospheric CO2 more strongly than plants with a lower cm\uffe2\uff88\uff95ca ratio. Based on the leaf cuvette experiments, the global value for discrimination against \uffce\uff9417O of atmospheric CO2 during photosynthetic gas exchange is estimated to be -0.57\uffc2\uffb10.14\uffe2\uff80\uff89\uffe2\uff80\uffb0 using cm\uffe2\uff88\uff95ca values of 0.3 and 0.7 for C4 and C3 plants, respectively. The main uncertainties in this global estimate arise from variation in cm\uffe2\uff88\uff95ca ratios among plants and growth conditions.
", "keywords": ["0106 biological sciences", "0301 basic medicine", "QE1-996.5", "CARBONIC-ANHYDRASE ACTIVITY", "Ecology", "OXYGEN-ISOTOPE FRACTIONATION", "MESOPHYLL CONDUCTANCE", "Geology", "15. Life on land", "01 natural sciences", "O-18/O-16 RATIOS", "MASS-INDEPENDENT FRACTIONATION", "03 medical and health sciences", "HIGH-PRECISION MEASUREMENTS", "Life", "13. Climate action", "3-DIMENSIONAL SYNTHESIS", "QH501-531", "STABLE-ISOTOPES", "Life Science", "14. Life underwater", "TRIPLE OXYGEN", "DIOXIDE", "QH540-549.5", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.5194/bg-17-3903-2020"}, {"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-17-3903-2020", "name": "item", "description": "10.5194/bg-17-3903-2020", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/bg-17-3903-2020"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-27T00:00:00Z"}}, {"id": "10.3390/foods9030322", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:21:54Z", "type": "Journal Article", "created": "2020-03-12", "title": "Comparison of Faba Bean Protein Ingredients Produced Using Dry Fractionation and Isoelectric Precipitation: Techno-Functional, Nutritional and Environmental Performance", "description": "Dry fractionated faba bean protein-rich flour (FPR) produced by milling/air classification, and faba bean protein isolate (FPI) produced by acid extraction/isoelectric precipitation were compared in terms of composition, techno-functional properties, nutritional properties and environmental impacts. FPR had a lower protein content (64.1%, dry matter (DM)) compared to FPI (90.1%, DM), due to the inherent limitations of air classification. Of the two ingredients, FPR demonstrated superior functionality, including higher protein solubility (85%), compared to FPI (32%) at pH 7. Foaming capacity was higher for FPR, although foam stability was similar for both ingredients. FPR had greater gelling ability compared to FPI. The higher carbohydrate content of FPR may have contributed to this difference. An amino acid (AA) analysis revealed that both ingredients were low in sulfur-containing AAs, with FPR having a slightly higher level than FPI. The potential nutritional benefits of the aqueous process compared to the dry process used in this study were apparent in the higher in vitro protein digestibility (IVPD) and lower trypsin inhibitor activity (TIA) in FPI compared to FPR. Additionally, vicine/convicine were detected in FPR, but not in FPI. Furthermore, much lower levels of fermentable oligo-, di- and monosaccharides, and polyols (FODMAPs) were found in FPI compared to FPR. The life cycle assessment (LCA) revealed a lower environmental impact for FPR, partly due to the extra water and energy required for aqueous processing. However, in a comparison with cow\uffe2\uff80\uff99s milk protein, both FPR and FPI were shown to have considerably lower environmental impacts.
", "keywords": ["Isoelectric precipitation", "carbon footprint", "fodmaps", "TP1-1185", "faba bean", "Article", "Life cycle assessment", "0404 agricultural biotechnology", "life cycle assessment", "Faba bean", "isoelectric precipitation", "FODMAPs", "Nutrition", "Functional properties", "2. Zero hunger", "functional properties", "Protein", "Chemical technology", "dry fractionation", "04 agricultural and veterinary sciences", "Carbon footprint", "nutrition", "13. Climate action", "Dry fractionation", "antinutrients; carbon footprint; dry fractionation; Faba bean; FODMAPs; functional properties; isoelectric precipitation; life cycle assessment; nutrition; protein", "protein", "antinutrients", "0405 other agricultural sciences", "Antinutrients"]}, "links": [{"href": "http://www.mdpi.com/2304-8158/9/3/322/pdf"}, {"href": "https://iris.uniroma1.it/bitstream/11573/1661889/1/VogelsangO%e2%80%99Dwyer_Comparison-of-Faba_2022.pdf"}, {"href": "https://www.mdpi.com/2304-8158/9/3/322/pdf"}, {"href": "https://doi.org/10.3390/foods9030322"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Foods", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/foods9030322", "name": "item", "description": "10.3390/foods9030322", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/foods9030322"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-11T00:00:00Z"}}, {"id": "10.5061/dryad.7v87nf5", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:22:31Z", "type": "Dataset", "created": "2024-01-11", "title": "Data from: Soil organic carbon stability in forests: distinct effects of tree species identity and traits", "description": "unspecifiedRising atmospheric CO2 concentrations have increased interest in the potential for forest ecosystems and soils to act as carbon (C) sinks. While soil organic C contents often vary with tree species identity, little is known about if, and how, tree species influence the stability of C in soil. Using a 40\u2010year\u2010old common garden experiment with replicated plots of eleven temperate tree species, we investigated relationships between soil organic matter (SOM) stability in mineral soils and 17 ecological factors (including tree tissue chemistry, magnitude of organic matter inputs and their turnover, microbial community descriptors, and soil physico\u2010chemical properties). We measured five SOM stability indices, including heterotrophic respiration, C in aggregate\u2010occluded particulate organic matter (POM) and mineral\u2010associated SOM, and bulk SOM \u03b415N and \u220614C. The stability of SOM varied substantially among tree species and this variability was independent of the amount of organic C in soils. Thus, when considering forest soils as C sinks, the stability of C stocks must be considered in addition to their size. Further, our results suggest tree species regulate soil C stability via the composition of their tissues, especially roots. Stability of SOM appeared to be greater (as indicated by higher \u03b415N and reduced respiration) beneath species with higher concentrations of nitrogen and lower amounts of acid\u2010insoluble compounds in their roots, while SOM stability appeared to be lower (as indicated by higher respiration and lower proportions of C in aggregate\u2010occluded POM) beneath species with higher tissue calcium contents. The proportion of C in mineral\u2010associated SOM and bulk soil \u220614C, though, were negligibly dependent on tree species traits, likely reflecting an insensitivity of some SOM pools to decadal\u2010scale shifts in ecological factors. Strategies aiming to increase soil C stocks may thus focus on particulate C pools, which can more easily be manipulated and are most sensitive to climate change.", "keywords": ["tree species", "14C", "13. Climate action", "15N", "soil organic matter", "Fractionation", "15. Life on land", "Radiocarbon"], "contacts": [{"organization": "Angst, Gerrit, Mueller, Kevin E., Eissenstat, David M., Trumbore, Susan, Freeman, Katherine H., Hobbie, Sarah E., Chorover, Jon, Oleksyn, Jacek, Reich, Peter B., Mueller, Carsten W.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5061/dryad.7v87nf5"}, {"rel": "self", "type": "application/geo+json", "title": "10.5061/dryad.7v87nf5", "name": "item", "description": "10.5061/dryad.7v87nf5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5061/dryad.7v87nf5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-11T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Fractionation&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=Fractionation&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=Fractionation&", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Fractionation&offset=50", "hreflang": "en-US"}], "numberMatched": 73, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-04-17T07:18:42.197201Z"}