Determination of \uffce\uffb417O values directly from CO2 with traditional gas source isotope ratio mass spectrometry is not possible due to isobaric interference of 13C16O16O on 12C17O16O. The methods developed so far use either chemical conversion or isotope equilibration to determine the \uffce\uffb417O value of CO2. In addition, \uffce\uffb413C measurements require correction for the interference from 12C17O16O on 13C16O16O since it is not possible to resolve the two isotopologues.
MethodsWe present a technique to determine the \uffce\uffb417O, \uffce\uffb418O and \uffce\uffb413C values of CO2 from the fragment ions that are formed upon electron ionization in the ion source of the Thermo Scientific 253 Ultra high\uffe2\uff80\uff90resolution isotope ratio mass spectrometer (hereafter 253 Ultra). The new technique is compared with the CO2\uffe2\uff80\uff90O2 exchange method and the 17O\uffe2\uff80\uff90correction algorithm for \uffce\uffb417O and \uffce\uffb413C values, respectively.
ResultsThe scale contractions for \uffce\uffb413C and \uffce\uffb418O values are slightly larger for fragment ion measurements than for molecular ion measurements. The \uffce\uffb417O and \uffce\uff9417O values of CO2 can be measured on the 17O+ fragment with an internal error that is a factor 1\uffe2\uff80\uff932 above the counting statistics limit. The ultimate precision depends on the signal intensity and on the total time that the 17O+ beam is monitored; a precision of 14\uffe2\uff80\uff89ppm (parts per million) (standard error of the mean) was achieved in 20\uffe2\uff80\uff89hours at the University of G\uffc3\uffb6ttingen. The \uffce\uff9417O measurements with the O\uffe2\uff80\uff90fragment method agree with the CO2\uffe2\uff80\uff90O2 exchange method over a range of \uffce\uff9417O values of \uffe2\uff88\uff920.3 to +0.7\uffe2\uff80\uffb0.
ConclusionsIsotope measurements on atom fragment ions of CO2 can be used as an alternative method to determine the carbon and oxygen isotopic composition of CO2 without chemical processing or corrections for mass interferences.
", "keywords": ["550", "NITROUS-OXIDE", "O-17/O-16", "ANALYTICAL SYSTEM", "01 natural sciences", "O-2", "0104 chemical sciences", "O-17 CORRECTION", "HIGH-PRECISION MEASUREMENTS", "13. Climate action", "Life Science", "ABUNDANCE", "DELTA-O-17", "EXCHANGE", "DIOXIDE", "Research Articles", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/rcm.8478"}, {"href": "https://doi.org/10.1002/rcm.8478"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Rapid%20Communications%20in%20Mass%20Spectrometry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/rcm.8478", "name": "item", "description": "10.1002/rcm.8478", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/rcm.8478"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-05T00:00:00Z"}}, {"id": "10.1007/s00374-011-0648-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:14:28Z", "type": "Journal Article", "created": "2012-01-16", "title": "Effect Of Elevated Carbon Dioxide On Growth And Nitrogen Fixation Of Two Soybean Cultivars In Northern China", "description": "The effect of elevated carbon dioxide (CO2) concentration on symbiotic nitrogen fixation in soybean under open-air conditions has not been reported. Two soybean cultivars (Glycine max (L.) Merr. cv. Zhonghuang 13 and cv. Zhonghuang 35) were grown to maturity under ambient (415 \u00b1 16 \u03bcmol mol\u22121) and elevated (550 \u00b1 17 \u03bcmol mol\u22121) [CO2] at the free-air carbon dioxide enrichment experimental facility in northern China. Elevated [CO2] increased above- and below-ground biomass by 16\u201318% and 11\u201320%, respectively, but had no significant effect on the tissue C/N ratio at maturity. Elevated [CO2] increased the percentage of N derived from the atmosphere (%Ndfa, estimated by natural abundance) from 59% to 79% for Zhonghuang 13, and the amount of N fixed from 166 to 275 kg N ha\u22121, but had no significant effect on either parameter for Zhonghuang 35. These results suggest that variation in N2 fixation ability in response to elevated [CO2] should be used as key trait for selecting cultivars for future climate with respect to meeting the higher N demand driven by a carbon-rich atmosphere.", "keywords": ["soybean cultivar", "0106 biological sciences", "2. Zero hunger", "symbiotic nitrogen fixation", "natural abundance", "FACE", "free-air carbon dioxide enrichment", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "01 natural sciences", "630"]}, "links": [{"href": "https://doi.org/10.1007/s00374-011-0648-z"}, {"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/s00374-011-0648-z", "name": "item", "description": "10.1007/s00374-011-0648-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00374-011-0648-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-01-13T00:00:00Z"}}, {"id": "10.1007/s00374-015-1004-5", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:14:29Z", "type": "Journal Article", "created": "2015-03-18", "title": "Biochar Alters Nitrogen Transformations But Has Minimal Effects On Nitrous Oxide Emissions In An Organically Managed Lettuce Mesocosm", "description": "Open AccessISSN:1432-0789", "keywords": ["Functional gene abundance", "2. Zero hunger", "Mineralization", "Organic farming", "13. Climate action", "Greenhouse gas emissions", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "Lettuce", "15. Life on land", "Nitrification", "Mineralization; Nitrification; Functional gene abundance; Lettuce; Organic farming; Greenhouse gas emissions"]}, "links": [{"href": "https://doi.org/10.1007/s00374-015-1004-5"}, {"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/s00374-015-1004-5", "name": "item", "description": "10.1007/s00374-015-1004-5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00374-015-1004-5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-03-19T00:00:00Z"}}, {"id": "10.1007/s003740050494", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:14:30Z", "type": "Journal Article", "created": "2002-08-25", "title": "Soil Organic Matter Dynamics After The Conversion Of Arable Land To Pasture", "description": "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/s10705-013-9591-8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:14:50Z", "type": "Journal Article", "created": "2013-12-07", "title": "Contribution Of Relay Intercropping With Legume Cover Crops On Nitrogen Dynamics In Organic Grain Systems", "description": "Nitrogen (N) management is a key issue in livestock-free organic grain systems. Relay intercropping with a legume cover crop can be a useful technique for improving N availability when two cash crops are grown successively. We evaluated the benefits of four relay intercropped legumes (Medicago lupulina, Medicago sativa, Trifolium pratense and Trifolium repens) on N dynamics and their contribution to the associated and subsequent cash crops in six fields of organic farms located in South-East France. None of the relay intercropped legumes affected the N uptake of the associated winter wheat but all significantly increased the N uptake of the succeeding spring crop, either maize or spring wheat. The improvement of the N nutrition of the subsequent maize crop induced a 30 % increase in grain yield. All relay intercropped legumes enriched the soil-plant system in N through symbiotic fixation. From 71 to 96 % of the N contained in the shoots of the legumes in late autumn was derived from the atmosphere (Ndfa) and varied between 38 and 67 kg Ndfa ha(-1). Even if the cover crop is expected to limit N leaching during wintertime, the presence of relay intercropped legumes had no significant effect on N leaching during winter compared to the control.", "keywords": ["[SDV.SA]Life Sciences [q-bio]/Agricultural sciences", "2. Zero hunger", "0106 biological sciences", "winter-wheat", "[SDV.SA] Life Sciences [q-bio]/Agricultural sciences", "corn following wheat", "Legume cover crop", "Organic farming", "N uptake", "agricultural system", "natural-abundance", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrate", "01 natural sciences", "630", "Relay intercropping", "n-2 fixation", "undersown crop", "catch crop", "Leaching", "isotopic fractionation", "rhizobial strain", "0401 agriculture", " forestry", " and fisheries", "living mulche"]}, "links": [{"href": "https://doi.org/10.1007/s10705-013-9591-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nutrient%20Cycling%20in%20Agroecosystems", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10705-013-9591-8", "name": "item", "description": "10.1007/s10705-013-9591-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10705-013-9591-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-12-08T00:00:00Z"}}, {"id": "10.1007/s11104-009-9939-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:14:56Z", "type": "Journal Article", "created": "2009-03-05", "title": "Soil Carbon Dynamics Following Afforestation Of A Tropical Savannah With Eucalyptus In Congo", "description": "Soil organic matter is a key factor in the global carbon cycle, but the magnitude and the direction of the change in soil carbon after afforestation with Eucalyptus in the tropics is still a matter of controversy. The objective of this work was to understand the dynamics of soil carbon in intensively managed Eucalyptus plantations after the afforestation of a native savannah. The isotopic composition (\u03b4) of soil carbon (C) and soil CO2 efflux (F) were measured on a four-age chronosequence of Eucalyptus and on an adjacent savannah. \u03b4 F was used to partition F between a C3 component and a C4 component, the latter corresponding to the decomposition of a labile pool of savannah-derived soil carbon (C SL). The mean residence time of CSL was 4.6\u00a0years. This further allowed us to partition the savannah-derived soil carbon into a labile and a stable (C SS) carbon pool. C SL accounted for 30% of soil carbon in the top soil of the savannah (0\u20135\u00a0cm), and only 12% when the entire 0\u201345\u00a0cm soil layer was considered. The decrease in C SL with time after plantation was more than compensated by an increase in Eucalyptus-derived carbon, and half of the newly incorporated Eucalyptus-derived carbon in the top soil was associated with the clay and fine silt fractions in the 14-year-old. stand. Increment in soil carbon after afforestation of tropical savannah with Eucalyptus is therefore expected despite a rapid disappearance of the labile savannah-derived carbon because a large fraction of savannah-derived carbon is stable.", "keywords": ["P33 - Chimie et physique du sol", "0106 biological sciences", "570", "550", "SAVANNAH", "SEQUESTRATION", "ORGANIC-MATTER DYNAMICS", "01 natural sciences", "630", "zone tropicale", "PLANTATION", "[SDV.BV]Life Sciences [q-bio]/Vegetal Biology", "EUCALYPTUS", "[SDV.BV] Life Sciences [q-bio]/Vegetal Biology", "sol tropical", "savane", "http://aims.fao.org/aos/agrovoc/c_1301", "13C", "TROPICAL PLANTATION", "http://aims.fao.org/aos/agrovoc/c_3048", "CHANGEMENT D'USAGE DES TERRES", "http://aims.fao.org/aos/agrovoc/c_35657", "Eucalyptus", "http://aims.fao.org/aos/agrovoc/c_162", "CO2 EFFLUX", "FRACTIONATION", "http://aims.fao.org/aos/agrovoc/c_1811", "LAND-USE CHANGE", "04 agricultural and veterinary sciences", "CHRONOSEQUENCE", "15. Life on land", "plantation foresti\u00e8re", "K10 - Production foresti\u00e8re", "NATURAL C-13 ABUNDANCE", "TEMPERATE FOREST", "RESPIRATION", "http://aims.fao.org/aos/agrovoc/c_7978", "http://aims.fao.org/aos/agrovoc/c_7979", "http://aims.fao.org/aos/agrovoc/c_6825", "extension foresti\u00e8re", "0401 agriculture", " forestry", " and fisheries", "TURNOVER", "carbone", "SOIL CARBON", "plantations", "http://aims.fao.org/aos/agrovoc/c_5990", "mati\u00e8re organique du sol", "http://aims.fao.org/aos/agrovoc/c_2683"]}, "links": [{"href": "https://doi.org/10.1007/s11104-009-9939-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-009-9939-7", "name": "item", "description": "10.1007/s11104-009-9939-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-009-9939-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-03-06T00:00:00Z"}}, {"id": "10.1007/s11104-015-2427-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:15:01Z", "type": "Journal Article", "created": "2015-03-11", "title": "Enhanced Biological N-2 Fixation And Yield Of Faba Bean (Vicia Faba L.) In An Acid Soil Following Biochar Addition: Dissection Of Causal Mechanisms", "description": "Acid soils constrain legume growth and biochars have been shown to address these constraints and enhance biological N2 fixation in glasshouse studies. A dissection of causal mechanisms from multiple crop field studies is lacking. In a sub-tropical field study, faba bean (Vicia faba L.) was cultivated in rotation with corn (Zea mays) following amendment of two contrasting biochars, compost and lime in a rhodic ferralsol. Key soil parameters and plant nutrient uptake were investigated alongside stable 15\u2009N isotope methodologies to elucidate the causal mechanisms for enhanced biological N2 fixation and crop productivity. Biological N2 fixation was associated with plant Mo uptake, which was driven by reductions in soil acidity following lime and papermill (PM) biochar amendment. In contrast, crop yield was associated with plant P and B uptake, and amelioration of soil pH constraints. These were most effectively ameliorated by PM biochar as it addressed both pH constraints and low soil nutrient status. While liming resulted in the highest biological N2 fixation, biochars provided greater benefits to faba bean yield by addressing P nutrition and ameliorating Al toxicity.", "keywords": ["Molybdenum", "2. Zero hunger", "compost", "abundance", "Plant Sciences", "Soil Science", "Plant Science", "04 agricultural and veterinary sciences", "15. Life on land", "Rhodic ferralsol", "natural 15N isotope", "0401 agriculture", " forestry", " and fisheries", "field assessment", "lime", "phosphorus", "Boron"]}, "links": [{"href": "https://doi.org/10.1007/s11104-015-2427-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-015-2427-3", "name": "item", "description": "10.1007/s11104-015-2427-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-015-2427-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-03-12T00:00:00Z"}}, {"id": "10.1007/s11104-013-1855-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:15:00Z", "type": "Journal Article", "created": "2013-08-21", "title": "Soil Microorganisms Respond To Five Years Of Climate Change Manipulations And Elevated Atmospheric Co2 In A Temperate Heath Ecosystem", "description": "Soil microbial responses to global change can affect organic matter turnover and nutrient cycling thereby altering the overall ecosystem functioning. In a large-scale experiment, we investigated the impact of 5\u00a0years of climate change and elevated atmospheric CO2 on soil microorganisms and nutrient availability in a temperate heathland. The future climate was simulated by increased soil temperature (+0.3\u00a0\u00b0C), extended pre-summer drought (excluding 5\u20138\u00a0% of the annual precipitation) and elevated CO2 (+130\u00a0ppm) in a factorial design. Soil organic matter and nutrient pools were analysed and linked to microbial measures by quantitative PCR of bacteria and fungi, chloroform fumigation extraction, and substrate-induced respiration to assess their impact of climate change on nutrient availability. Warming resulted in higher measures of fungi and bacteria, of microbial biomass and of microbial growth potential, however, this did not reduce the availability of nitrogen or phosphorus in the soil. Elevated CO2 did not directly affect the microbial measures or nutrient pools, whereas drought shifted the microbial community towards a higher fungal dominance. Although we were not able to show strong interactive effects of the global change factors, warming and drought changed both nutrient availability and microbial community composition in the heathland soil, which could alter the ecosystem carbon and nutrient flow in the long-term.", "keywords": ["Bacterial abundance", "2. Zero hunger", "0301 basic medicine", "0303 health sciences", "Soil nutrient pools", "Elevated carbon dioxide", "CLIMAITE", "Fungal abundance", "15. Life on land", "Real-time quantitative PCR", "6. Clean water", "Long-term ecosystem manipulation", "03 medical and health sciences", "13. Climate action", "11. Sustainability", "Deschampsia flexuosa"]}, "links": [{"href": "https://doi.org/10.1007/s11104-013-1855-1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-013-1855-1", "name": "item", "description": "10.1007/s11104-013-1855-1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-013-1855-1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-08-22T00:00:00Z"}}, {"id": "10.1016/j.agee.2003.12.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:15:18Z", "type": "Journal Article", "created": "2004-02-05", "title": "Effects Of Forest Conversion To Pasture On Soil Carbon Content And Dynamics In Brazilian Amazonia", "description": "Abstract Soils play an important role in the carbon cycle, and deforestation in the tropics affects both soil carbon storage and CO2 release into the atmosphere. The consequences of deforestation and conversion to pasture for soil carbon content and dynamics were examined in two soil types differing mainly by their texture. Two chronosequences were selected, each consisting of an intact forest and three pastures of different ages (4, 8, 15 years and 3, 9, 15 years, respectively). One chronosequence is located in the central part of the Brazilian Amazon basin, where the soils are clayey ferralsols, and the second in the Eastern Brazilian Amazon Basin, where the soils are sandy clayey acrisols. In the upper layer the C content of clayey soils was three times higher than in the sandy soils, but despite the differences in soil texture, the C distribution in the particle-size fractions was quite similar. In the two chronosequences, the conversion to pasture induced a slight increase in C content. Bulk density increases were greater on soils with lower clay contents. The 13 C measurements, which allowed to calculate the distribution of C derived from forest and from pasture, showed that all the particle-size fractions incorporated C derived from pasture and that a significant proportion of the young organic matter is rapidly trapped in the finest fractions. Although the proportions of pasture-derived C were higher in the sandy soils than in the clayey soils, the amounts of pasture-derived C in the particle-size fractions were 2\u20133 times larger in the clayey soils than in the sandy soils.", "keywords": ["rain-forest", "550", "ZONE TROPICALE", "c-13 natural abundance", "TEXTURE", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "630", "Carbon Cycle", "C-13 isotope", "Amazonia", "EVOLUTION DES SOLS SOUS CULTURE", "STRUCTURE DU SOL", "soil carbon storage", "particle-size fractions", "Pasture", "cultivated oxisols", "ANALYSE ISOTOPIQUE", "SABLE", "eastern amazonia", "Deforestation", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "Acrisol", "2. Zero hunger", "tropical soils Organic-matter dynamics", "Brasil", "size-fractions", "PATURAGE", "turnover", "Soil Carbon", "04 agricultural and veterinary sciences", "South America", "15. Life on land", "CARBONE ORGANIQUE", "STOCK ORGANIQUE", "ARGILE", "0401 agriculture", " forestry", " and fisheries", "DEFORESTATION", "texture"], "contacts": [{"organization": "Desjardins, T., Barros, E., Sarrazin, M., Girardin, C., Mariotti, A.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2003.12.008"}, {"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.2003.12.008", "name": "item", "description": "10.1016/j.agee.2003.12.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2003.12.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-07-01T00:00:00Z"}}, {"id": "10.1016/j.geoderma.2021.115570", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:16:23Z", "type": "Journal Article", "created": "2021-11-09", "title": "Litter quality, mycorrhizal association, and soil properties regulate effects of tree species on the soil fauna community", "description": "Abstract Forest management, including selection of appropriate tree species to mitigate climate change and sustain biodiversity, requires a better understanding of factors that affect the composition of soil fauna communities. These communities are an integral part of the soil ecosystem and play an essential role in forest ecosystem functioning related to carbon and nitrogen cycling. Here, by performing a field study across six common gardens in Denmark, we evaluated the effects of tree species identity and mycorrhizal association (i.e., arbuscular mycorrhiza (AM) and ectomycorrhiza (ECM)) on soil fauna (meso- and macrofauna) taxonomic and functional community composition by using diversity, abundance, and biomass as proxies. We found that (1) tree species identity and mycorrhizal association both showed significant effects on soil fauna communities, but the separation between community characteristics in AM and ECM tree species was not entirely consistent; (2) total soil fauna abundance, biomass, as well as taxonomic and functional diversity were generally significantly higher under AM tree species, as well as lime, with higher litter quality (high N and base cation and low lignin:N ratio); (3) tree species significantly influenced the properties of litter, forest floor, and soil, among which litter and/or forest floor N, P, Ca, and Mg concentrations, soil pH, and soil moisture predominantly affected soil fauna abundance, biomass, and taxonomic and functional diversity. Our results from this multisite common garden experiment provide strong and consistent evidence of positive effects of tree species with higher litter quality on soil fauna communities in general, which helps to better understand the effects of tree species selection on soil biodiversity and its functions related to forest soil carbon sequestration.", "keywords": ["DECOMPOSITION", "EARTHWORMS", "Diversity", "PH", "FOREST FLOOR", "Common garden experiment", "Soil meso- and macrofauna", "DIVERSITY", "Biology and Life Sciences", "04 agricultural and veterinary sciences", "15. Life on land", "NITROGEN", "CARBON", "Taxonomic group", "FUNCTIONAL TRAITS", "Abundance", "13. Climate action", "Earth and Environmental Sciences", "Functional group", "0401 agriculture", " forestry", " and fisheries", "BIODIVERSITY", "ABUNDANCE", "Biomass"]}, "links": [{"href": "https://doi.org/10.1016/j.geoderma.2021.115570"}, {"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.2021.115570", "name": "item", "description": "10.1016/j.geoderma.2021.115570", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.geoderma.2021.115570"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-02-01T00:00:00Z"}}, {"id": "10.1016/j.icarus.2017.09.002", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:16:25Z", "type": "Journal Article", "created": "2017-09-12", "title": "Volatile element loss during planetary magma ocean phases", "description": "Abstract Moderately volatile elements (MVE) are key tracers of volatile depletion in planetary bodies. Zinc is an especially useful MVE because of its generally elevated abundances in planetary basalts, relative to other MVE, and limited evidence for mass-dependent isotopic fractionation under high-temperature igneous processes. Compared with terrestrial basalts, which have \u03b4 66 Zn values (per mille deviation of the 66 Zn/ 64 Zn ratio from the JMC-Lyon standard) similar to some chondrite meteorites (\u223c+0.3\u2030), lunar mare basalts yield a mean \u03b4 66 Zn value of +1.4\u00a0\u00b1\u00a00.5\u2030 (2\u00a0st. dev.). Furthermore, mare basalts have average Zn concentrations \u223c50 times lower than in typical terrestrial basaltic rocks. Late-stage lunar magmatic products, including ferroan anorthosite, Mg- and Alkali-suite rocks have even higher \u03b4 66 Zn values (+3 to +6\u2030). Differences in Zn abundance and isotopic compositions between lunar and terrestrial rocks have previously been interpreted to reflect evaporative loss of Zn, either during the Earth\u2013Moon forming Giant Impact, or in a lunar magma ocean (LMO) phase. To explore the mechanisms and processes under which volatile element loss may have occurred during a LMO phase, we developed models of Zn isotopic fractionation that are generally applicable to planetary magma oceans. Our objective was to identify conditions that would yield a \u03b4 66 Zn signature of \u223c+1.4\u2030 within the lunar mantle. For the sake of simplicity, we neglect possible Zn isotopic fractionation during the Giant Impact, and assumed a starting composition equal to the composition of the present-day terrestrial mantle, assuming both the Earth and Moon had zinc \u2018consanguinity\u2019 following their formation. We developed two models: the first simulates evaporative fractionation of Zn only prior to LMO mixing and crystallization; the second simulates continued evaporative fractionation of Zn that persists until \u223c75% LMO crystallization. The first model yields a relatively homogenous bulk solid LMO \u03b4 66 Zn value, while the second results in a stratification of \u03b4 66 Zn values within the LMO sequence. Loss and/or isolation mechanisms for volatiles are critical to these models; hydrodynamic escape was not a dominant process, but loss of a nascent lunar atmosphere or separation of condensates into a proto-lunar crust are possible mechanisms by which volatiles could be separated from the lunar interior. The results do not preclude models that suggest a lunar volatile depletion episode related to the Giant Impact. Conversely, LMO models for volatile loss do not require loss of volatiles prior to lunar formation. Outgassing during planetary magma ocean phases likely played a profound role in setting the volatile inventories of planets, particularly for low mass bodies that experienced the greatest volatile loss. In turn, our results suggest that the initial compositions of planets that accreted from smaller, highly differentiated planetesimals were likely to be severely volatile depleted.", "keywords": ["[SDU] Sciences of the Universe [physics]", "Zinc", "Magma ocean", "Isotopes", "Volatile depletion", "13. Climate action", "Abundances", "Moon", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.icarus.2017.09.002"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Icarus", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.icarus.2017.09.002", "name": "item", "description": "10.1016/j.icarus.2017.09.002", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.icarus.2017.09.002"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-01-01T00:00:00Z"}}, {"id": "10.1016/j.jspr.2023.102092", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:16:33Z", "type": "Journal Article", "created": "2023-02-16", "title": "Does population density influence fluctuating asymmetry of Sitophilus oryzae laboratory populations?", "description": "Open AccessThe rice weevil, Sitophilus oryzae, is one of the most pernicious pests of stored grain. It is a primary pest and causes a reduction in weight, quality, seed viability and commercial value of various cereals. For this study, we reared S. oryzae on wheat grains under two different adult densities, low and high, with an aim to assess the influence of population density on fluctuating asymmetry of the adult\u2019s ventral body. Fluctuating asymmetry represents slight and random deviations from bilateral symmetry normally distributed around a 0 mean, and its level is usually higher under a disturbed developmental process. Accordingly, we expected that environmental stress caused by higher density would increase its level. Opposite to our hypothesis, the study showed that population density did not influence fluctuating asymmetry of S. oryzae adults. Both experimental populations exhibited a similar, non-significant level of fluctuating asymmetry.", "keywords": ["0106 biological sciences", "0301 basic medicine", "2. Zero hunger", "abundance", "rice weevil", "03 medical and health sciences", "wheat", "fluctuating asymmetry", "Fluctuating asymmetry", "Abundance", " Rice weevil", " Wheat", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.jspr.2023.102092"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Stored%20Products%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jspr.2023.102092", "name": "item", "description": "10.1016/j.jspr.2023.102092", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jspr.2023.102092"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-03-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2022.161255", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:16:44Z", "type": "Journal Article", "created": "2022-12-31", "title": "Exploration of occurrence and sources of microplastics (>10 \u03bcm) in Danish marine waters", "description": "Microplastics (MPs) were quantified in Danish marine waters of the Kattegat and the southernmost part of Skagerrak bordering to it. Kattegat is a waterbody between Denmark and Sweden that receives inflow from the Baltic Sea and direct urban runoff from the metropolitan area of Copenhagen and Malm\u00f6. MPs were measured in 14 continuous transects while steaming between monitoring stations. MP levels tended to be highest close to the Copenhagen-Malm\u00f6 area, albeit this was more obvious from the abundance of particles rather than mass. The outcome of the measurements allowed a rough MP budget in the Danish Straits region, suggesting that urban waste- and stormwater discharges could not be neglected as potential MP source in these waters. The marine samples were collected by pumping and filtering water over 10 \u03bcm steel filters, hereby sampling a total of 19.3 m3. They were prepared and analyzed by FPA-\u03bcFTIR imaging, and the scans interpreted to yield MP size, shape, polymer type, and estimated mass. The average concentration was 103 \u00b1 86 items m-3, corresponding to 23.3 \u00b1 28.3 \u03bcg m-3 (17-286 items m-3; 0.6-84.1 \u03bcg m-3). Most MPs were smaller than 100 \u03bcm and fragments dominated the samples. The carbonyl index was assessed for polyolefins, showing that oxidation increased with decreasing MP size, but did not correlate with distance to urban areas. A rough budget of MP in the Danish Straits region suggested that MPs discharged from urban waste- and stormwaters were an import source of MPs.", "keywords": ["MP abundance", "13. Climate action", "Microplastics", "\u03bcFTIR-imaging", "/dk/atira/pure/sustainabledevelopmentgoals/life_below_water; name=SDG 14 - Life Below Water", "11. Sustainability", "Microplastic sources", "Mass concentration", "14. Life underwater", "/dk/atira/pure/sustainabledevelopmentgoals/sustainable_cities_and_communities; name=SDG 11 - Sustainable Cities and Communities", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2022.161255"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2022.161255", "name": "item", "description": "10.1016/j.scitotenv.2022.161255", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2022.161255"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-03-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2014.02.003", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:16:53Z", "type": "Journal Article", "created": "2014-02-18", "title": "Productivity Affects The Density-Body Mass Relationship Of Soil Fauna Communities", "description": "The productivity of ecosystems and their disturbance regime affect the structure of animal communities. However, it is not clear which trophic levels benefit the most from higher productivity or are the most impacted by disturbance. The density-body mass (DBM) relationship has been shown to reflect changes in the structure of communities subjected to environmental modifications, so far, mainly in aquatic systems. We tested how different seawater inundation frequencies and cattle grazing, which both disturbed and impacted the productivity of a terrestrial system, a salt marsh, affected the size structure of soil fauna communities, expressed by their DBM relationship. We hypothesized that either: (1) all the trophic levels of soil fauna would benefit from higher productivity (i.e., amount of litter mass), reflected by a higher Y-intercept of the DBM relationship; (2) only smaller animals would benefit, reflected by a lower slope of the relationship; (3) or only larger animals would benefit, reflected by a higher slope of the relationship. We collected a large range of soil fauna from different elevation levels in grazed and ungrazed areas, thence subjected to different levels of productivity, represented by litter mass, with the most inundated and grazed area as the least productive one. Considering that pore size must be smaller in inundated and grazed areas, productivity seemed to be a greater factor influencing species distribution than soil structure. We found slopes lower than-0.75, showing that large animals dominated the community. However, a difference between the DBM relationships of the most and least frequently inundated ungrazed sites indicated that higher productivity benefited the smaller animals. Our findings show that high productivity does not equally affect the different trophic levels of this soil fauna community, suggesting inefficient transfers of energy from one trophic level to another, as smaller species benefitted more from higher productivity. \u00a9 2014 Elsevier Ltd.", "keywords": ["population-density", "0106 biological sciences", "abundance", "plant-species richness", "rain-forest", "size relationships", "energetic equivalence rule", "intermediate disturbance hypothesis", "15. Life on land", "01 natural sciences", "forest mull", "salt-marsh", "13. Climate action", "food webs", "SDG 14 - Life Below Water"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2014.02.003"}, {"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.2014.02.003", "name": "item", "description": "10.1016/j.soilbio.2014.02.003", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2014.02.003"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-05-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2014.06.024", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:16:53Z", "type": "Journal Article", "created": "2014-07-03", "title": "Identifying Response Groups Of Soil Nitrifiers And Denitrifiers To Grazing And Associated Soil Environmental Drivers In Tibetan Alpine Meadows", "description": "Defining response groups within N-related microbial communities is needed to predict land management effect on soil N dynamics, but information on such response groups and associated environmental drivers is scarce. We investigated the abundance and major populations of ammonia-oxidizing archaea (AOA) and bacteria (AOB), and nirS- and nirK-harboring denitrifiers under different grazing managements in Tibetan alpine meadow soils. Grazing increased AOB and AOA abundances up to 42 fold and 3.7 fold, respectively, and increased the percentage of AOB within total ammonia oxidizers from 3.1% to 10.8%. The abundance of nirK-like denitrifiers increased with grazing intensity, while the abundance of nirS-like denitrifiers tended to decrease. However, sub-groups within each of these broad groups of (de)nitrifiers responded differently to grazing. Soil nitrate was the main driver of the abundance of denitrifier subgroups (nirK or nirS) positively responding to grazing, while soil moisture and carbon concentration were the main drivers of the abundance of denitrifier sub-groups negatively responding to grazing. AOB and nirK-harboring denitrifiers thus generally responded more positively to grazing than AOA and nirS-harboring denitrifiers, but significant functional diversity existed within each group. Our approach demonstrates the usefulness of the concept of response groups to better characterize and understand (de)nitrifier response to grazing. (C) 2014 Elsevier Ltd. All rights reserved.", "keywords": ["nirS", "2. Zero hunger", "Soil nitrogen cycling", "[SDV]Life Sciences [q-bio]", "04 agricultural and veterinary sciences", "15. Life on land", "630", "AOA", "AOB", "Community structure", "[SDV] Life Sciences [q-bio]", "Abundance", "nirK", "amoA", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2014.06.024"}, {"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.2014.06.024", "name": "item", "description": "10.1016/j.soilbio.2014.06.024", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2014.06.024"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-10-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2019.107701", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:16:56Z", "type": "Journal Article", "created": "2020-01-02", "title": "Do cover crops benefit soil microbiome? A meta-analysis of current research", "description": "Abstract Cover cropping is a promising sustainable agricultural method with the potential to enhance soil health and mitigate consequences of soil degradation. Because cover cropping can form an agroecosystem distinct from that of bare fallow, the soil microbiome is hypothesized to respond to the altered environmental circumstances. Despite the growing number of primary literature sources investigating the relationship between cover cropping and the soil microbiome, there has not been a quantitative research synthesis that is sufficiently comprehensive and specific to this relationship. We conducted a meta-analysis by compiling the results of 60 relevant studies reporting cover cropping effects on soil microbial properties to estimate global effect sizes and explore the current landscape of this topic. Overall, cover cropping significantly increased parameters of soil microbial abundance, activity, and diversity by 27%, 22%, and 2.5% respectively, compared to those of bare fallow. Moreover, cover cropping effect sizes varied by agricultural covariates like cover crop termination or tillage methods. Notably, cover cropping effects were less pronounced under conditions like continental climate, chemical cover crop termination, and conservation tillage. This meta-analysis showed that the soil microbiome can become more robust under cover cropping when properly managed with other agricultural practices. However, more primary research is still needed to control between-study heterogeneity and to more elaborately assess the relationships between cover cropping and the soil microbiome.", "keywords": ["CLIMATE", "2. Zero hunger", "MICROBIAL ACTIVITY", "13. Climate action", "SOIL ORDER", "https://purl.org/becyt/ford/4.1", "0401 agriculture", " forestry", " and fisheries", "https://purl.org/becyt/ford/4", "AGRONOMY", "MICROBIAL ABUNDANCE", "04 agricultural and veterinary sciences", "15. Life on land", "MICROBIAL DIVERSITY"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2019.107701"}, {"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.2019.107701", "name": "item", "description": "10.1016/j.soilbio.2019.107701", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2019.107701"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-01T00:00:00Z"}}, {"id": "10.1016/j.still.2009.02.011", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:17:02Z", "type": "Journal Article", "created": "2009-04-01", "title": "Earthworm Populations Under Different Tillage Systems In Organic Farming", "description": "To understand how earthworms could improve soil porosity in no-tillage organic farming systems, the aim of our study was to compare the effect of different tillage systems on earthworm populations, from conventional (traditional mouldboard ploughing, MP and shallow mouldboard ploughing, SMP) to conservation tillage (reduced tillage, RT, direct drilling or very superficial tillage, NT) in three organic arable systems in France (sites A\u2013C). In a second stage, the effect of earthworm activity on soil porosity under the four tillage systems was assessed at sites A and B. Earthworm abundance, biomass and diversity were measured over a 2\u20133-year period at the 3 sites. During the same period, soil structure (soil profile description and soil bulk density) and open worm burrows in the soil were assessed at sites A and B. After 3 years of experiments, it was found that at 2 sites earthworm abundance and biomass were higher in NT than with ploughing or reduced tillage. The increase of earthworms in NT is mainly due to anecic species increase. Earthworm abundance and biomass tend to decrease regardless of the tillage techniques employed at sites with a ley, and conversely, tend to increase in NT and RT at sites initially ploughed. In the short term, the increase of anecic species in NT has no effect on soil porosity evolution: NT soils were more compacted than those which were ploughed. A long-term experiment is required to assess the effect of biological activity on the physical components of soil in organic farming.", "keywords": ["2. Zero hunger", "0106 biological sciences", "Organic farming", "[SDE.MCG]Environmental Sciences/Global Changes", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "630", "Soil tillage", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "[SDE.MCG] Environmental Sciences/Global Changes", "Soil biology", "Abundance", "Soil structure", "Earthworms", "0401 agriculture", " forestry", " and fisheries", "Biomass", "[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces", "environment", "Conservation tillage"]}, "links": [{"href": "https://doi.org/10.1016/j.still.2009.02.011"}, {"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.2009.02.011", "name": "item", "description": "10.1016/j.still.2009.02.011", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2009.02.011"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-07-01T00:00:00Z"}}, {"id": "10.1023/b:plso.0000037053.05902.60", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:17:24Z", "type": "Journal Article", "created": "2004-08-06", "title": "Woody Legume Fallow Productivity, Biological N-2-Fixation And Residual Benefits To Two Successive Maize Crops In Zimbabwe", "description": "Three woody legumes were planted as two-year 'improved fallows' to evaluate their residual nitrogen (N) effects on two subsequent maize crops under minimum and conventional tillage management. Maize monoculture and cowpea-maize-maize sequence treatments were included as controls. N-2-fixation was estimated using the N-15 natural abundance method to allow the N contribution from the fallows to be partitioned into N2-fixation and soil N capture. Acacia angustissima accumulated the largest amount of both below-ground and above-ground biomass during the 2-year growth period. Using Hyparrhenia grass as the reference plant, the proportion of N-2-fixed in litter was 56, 55, 84 and 58% for Acacia, Sesbania sesban, Cajanus cajan, and cowpea, respectively, resulting in inputs of biologically fixed N of 122, 84, 96 and 28 kg N ha(-1). Maize growth following the legumes for two subsequent cropping seasons was in most cases not directly related to the N inputs. The first year maize crop was severely infested with cutworms (Agrotis sp.) in the Sesbania and Acacia plots, while the second season maize was affected by drought particularly in the Acacia plots where there was high moisture demand by the re-growing trees. During the second season, N uptake by maize following Sesbania was significantly higher than the rest of the treatments. Conventional tillage resulted in better yields than minimum tillage across all treatments and in both seasons. It can be concluded that (1) improved legume fallow system results in net positive soil N balances, (2) despite large inputs of litter and continued recycling of N during the cropping phase, legume species that re-grow after cutting can result in depressed yields in drought seasons, and (3) tillage is beneficial even after improved legume fallows.", "keywords": ["2. Zero hunger", "0106 biological sciences", "shrub", "n-15 natural-abundance", "root development", "soil fertility", "0401 agriculture", " forestry", " and fisheries", "nitrogen-fixation", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "cassia-siamea", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1023/b:plso.0000037053.05902.60"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1023/b:plso.0000037053.05902.60", "name": "item", "description": "10.1023/b:plso.0000037053.05902.60", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1023/b:plso.0000037053.05902.60"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-05-01T00:00:00Z"}}, {"id": "10.1038/ncomms8617", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:17:31Z", "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/s41550-017-0055", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:17:33Z", "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/srep08280", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:17:38Z", "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": "10.1046/j.1469-8137.1999.00479.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:17:44Z", "type": "Journal Article", "created": "2003-03-12", "title": "Differential Responses Of Grass And A Dwarf Shrub To Long-Term Changes In Soil Microbial Biomass C, N And P Following Factorial Addition Of Npk Fertilizer, Fungicide And Labile Carbon To A Heath", "description": "Microbial immobilization may decrease the inorganic nutrient concentrations of the soil to the extent of affecting plant nutrient uptake and growth. We have hypothesized that graminoids with opportunistic nutrient\uffe2\uff80\uff90acquisition strategies are strongly influenced by nutrient limitation imposed by microbes, whereas growth forms such as dwarf shrubs are less affected by the mobilization\uffe2\uff80\uff93immobilization cycles in microbes. By adding NPK fertilizer, labile C (sugar) and fungicide (benomyl) over a 5 yr period in a fully factorial design, we aimed to manipulate the sink\uffe2\uff80\uff93source potential for nutrients in a non\uffe2\uff80\uff90acidic heath tundra soil. After 2 yr, N and P accumulated in the microbial biomass after fertilization with no change in microbial C, which suggests that nutrients did not limit microbial biomass growth. After 5 yr, microbial C was enhanced by 60% in plots with addition of labile C, which points to C\uffe2\uff80\uff90limitation of the microbial biomass. Microbial biomass N and P tended to increase following addition of labile C, by 10 and 25%, respectively. This caused decreased availability of NH4+ and P, showing close microbial control of nutrient availability. The most common graminoid, Festuca ovina, responded to fertilizer addition with a strong increase, and to labile C addition with a strong decrease in cover, providing the first direct field evidence that nutrient limitation imposed by immobilizing microbes can affect the growth of tundra plants. Also in support of our hypothesis, following addition of labile C the concentrations of N and K in leaves and that of N in roots of F. ovina decreased, whilst the demand of roots for P increased. In contrast, the most common dwarf shrub, Vaccinium uliginosum, was only slightly sensitive to changes in resource availability, showing no cover change after 4 yr addition of labile C and fertilizer, and little change in leaf nutrient concentrations. We suggest that the differential responses of the two growth forms are due to differences in storage and nutrient uptake pathways, with the dwarf shrub having large nutrient storage capacity and access to organic forms of N through its mycorrhizal association. While the fungicide had no effect on ericoid mycorrhizal colonization of roots or symbiotic function inferred from plant 15N natural abundance, it decreased microbial biomass C and N after 2 yr. Throughout the fifth season, the availability of soil NO3\uffe2\uff88\uff92 and inorganic P was decreased with no change in microbial biomass C, N or P, suggesting a negative impact of benomyl on N and P mineralization.
", "keywords": ["2. Zero hunger", "Plant N natural abundance", "0401 agriculture", " forestry", " and fisheries", "Arctic-alpine ecosystems", "Benomyl", "04 agricultural and veterinary sciences", "Microbial nutrient immobilization", "Mycorrhiza", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1046/j.1469-8137.1999.00479.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/New%20Phytologist", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1046/j.1469-8137.1999.00479.x", "name": "item", "description": "10.1046/j.1469-8137.1999.00479.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1046/j.1469-8137.1999.00479.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1999-09-01T00:00:00Z"}}, {"id": "10.1080/00103620802135492", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:17:54Z", "type": "Journal Article", "created": "2008-07-02", "title": "Tillage Effects On Soil Quality Indicators And Nematode Abundance In Loessial Soil Under Long-Term No-Till Production", "description": "Abstract: Soil quality indicators and nematode abundance were characterized in a loessial soil under long\u2010term conservation tillage to evaluate the effects of no\u2010till, double\u2010disk, chisel, and moldboard plow treatments. Indicators included soil electrical conductivity (EC), soil texture, soil organic matter (SOM), and total particulate organic matter (tPOM). Nematode abundance was positively correlated with EC, silt content, and total POM and negatively correlated with clay content. Clay content was the main source of variation among soil quality indicators and was negatively correlated with nematode abundance and most indicators. The gain in SOM in the no\u2010till system amounted to 10887\u00a0kg over the 24 years or 454\u00a0kg\u00a0ha\u22121\u00a0year\u22121, about half of this difference (45%) resulting from soil erosion in plowed soils. The balance of gain in SOM with no till (249\u00a0kg\u00a0ha\u22121 year\u22121) was due to SOM sequestration with no till. No\u2010till management reduced soil erosion, increased SOM, and enhanced soil physical characteristics.", "keywords": ["2. Zero hunger", "nematode abundance", "no-till", "Ecology and Evolutionary Biology", "Loess", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "630", "6. Clean water", "tillage", "0401 agriculture", " forestry", " and fisheries", "soil quality", "Agricultural Science"]}, "links": [{"href": "https://doi.org/10.1080/00103620802135492"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Communications%20in%20Soil%20Science%20and%20Plant%20Analysis", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1080/00103620802135492", "name": "item", "description": "10.1080/00103620802135492", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1080/00103620802135492"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-07-01T00:00:00Z"}}, {"id": "10.1111/gcb.16042", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:18:28Z", "type": "Journal Article", "created": "2021-12-19", "title": "Stimulation of ammonia oxidizer and denitrifier abundances by nitrogen loading: Poor predictability for increased soil N2O emission", "description": "AbstractUnprecedented nitrogen (N) inputs into terrestrial ecosystems have profoundly altered soil N cycling. Ammonia oxidizers and denitrifiers are the main producers of nitrous oxide (N2O), but it remains unclear how ammonia oxidizer and denitrifier abundances will respond to N loading and whether their responses can predict N\uffe2\uff80\uff90induced changes in soil N2O emission. By synthesizing 101 field studies worldwide, we showed that N loading significantly increased ammonia oxidizer abundance by 107% and denitrifier abundance by 45%. The increases in both ammonia oxidizer and denitrifier abundances were primarily explained by N loading form, and more specifically, organic N loading had stronger effects on their abundances than mineral N loading. Nitrogen loading increased soil N2O emission by 261%, whereas there was no clear relationship between changes in soil N2O emission and shifts in ammonia oxidizer and denitrifier abundances. Our field\uffe2\uff80\uff90based results challenge the laboratory\uffe2\uff80\uff90based hypothesis that increased ammonia oxidizer and denitrifier abundances by N loading would directly cause higher soil N2O emission. Instead, key abiotic factors (mean annual precipitation, soil pH, soil C:N ratio, and ecosystem type) explained N\uffe2\uff80\uff90induced changes in soil N2O emission. Altogether, these findings highlight the need for considering the roles of key abiotic factors in regulating soil N transformations under N loading to better understand the microbially mediated soil N2O emission.Microorganisms carrying pmoA and nosZ genes are major drivers of methane and nitrous oxide fluxes from soils. However, most studies on these organisms have been conducted in mesic ecosystems; therefore, little is known about the factors driving their distribution in drylands, the largest biome on Earth. We conducted a global survey to evaluate the role of climate\uffe2\uff80\uff90 and soil\uffe2\uff80\uff90related variables as predictors of the richness, abundance and community structure of bacteria carrying pmoA and nosZ genes.
LocationEighty dryland ecosystems distributed worldwide.
Time periodFrom February 2006 to December 2011.
Major taxa studiedMethanotrophic (carrying the pmoA gene) and denitrifiying (carrying the nosZ gene) bacteria.
MethodsWe used data from a field survey and structural equation modelling to evaluate the direct and indirect effects of climatic (aridity, rainfall seasonality and mean annual temperature) and soil (organic carbon, pH and texture) variables on the total abundance, richness and community structure of microorganisms carrying pmoA and nosZ genes.
ResultsTaxa related to Methylococcus capsulatus or Methylocapsa sp., often associated with mesic environments, were common in global drylands. The abundance and richness of methanotrophs were not associated with climate or soil properties. However, mean annual temperature, rainfall seasonality, organic C, pH and sand content were highly correlated with their community structure. Aridity and soil variables, such as sand content and pH, were correlated with the abundance, community structure and richness of the nosZ bacterial community.
Main conclusionsOur study provides new insights into the drivers of the abundance, richness and community structure of soil microorganisms carrying pmoA and nosZ genes in drylands worldwide. We highlight how ongoing climate change will alter the structure of soil microorganisms, which might affect the net CH4 exchange and will probably reduce the capacity of dryland soils to carry out the final step of denitrification, favouring net N2O emissions.Subsistence farmers in Africa depend largely on the soil organic matter to sustain crop productivity. Long\uffe2\uff80\uff90term changes in soil organic carbon and nitrogen were measured after woodland clearance for smallholder subsistence farming or for commercial farming. The contents of organic carbon and nitrogen in soil under reference woodlands were largest (53.3\uffe2\uff80\uff83t C ha\uffe2\uff88\uff921, 4.88\uffe2\uff80\uff83t N ha\uffe2\uff88\uff921) in a red clay soil (\uffe2\uff88\uffbc\uffe2\uff80\uff8350% clay + silt), followed by a granitic sand (\uffe2\uff88\uffbc\uffe2\uff80\uff8312% clay + silt; 22.8\uffe2\uff80\uff83t C ha\uffe2\uff88\uff921, 1.47\uffe2\uff80\uff83t N ha\uffe2\uff88\uff921) and least (19.5\uffe2\uff80\uff83t C ha\uffe2\uff88\uff921, 0.88\uffe2\uff80\uff83t N ha\uffe2\uff88\uff921) in a Kalahari sand (\uffe2\uff88\uffbc\uffe2\uff80\uff835% clay + silt). Organic carbon declined rapidly under cultivation to attain new equilibria within 10\uffe2\uff80\uff83years on all smallholdings. Greatest losses occurred in soils that initially contained most carbon and nitrogen in the order: red clay (22.4\uffe2\uff80\uff83t C ha\uffe2\uff88\uff921 and 1.0\uffe2\uff80\uff83t N ha\uffe2\uff88\uff921) > granitic sand (13.2\uffe2\uff80\uff83t C ha\uffe2\uff88\uff921 and 0.8\uffe2\uff80\uff83t N ha\uffe2\uff88\uff921) > Kalahari sand (10.6\uffe2\uff80\uff83t C ha\uffe2\uff88\uff921 and 0.5\uffe2\uff80\uff83t N ha\uffe2\uff88\uff921). On the clay soil, commercial farming with intensive use of mineral fertilizers and incorporation of maize stover led to more gradual decline: at equilibrium, contents of carbon and nitrogen were 15\uffe2\uff80\uff83t C ha\uffe2\uff88\uff921 and 1.7\uffe2\uff80\uff83t N ha\uffe2\uff88\uff921 greater than on smallholdings with similar soil and climate.
In the Kalahari sand the \uffce\uffb413C of organic C remained constant after woodland clearance, and maize contributed less than 10% of the total C even after 55\uffe2\uff80\uff83years. The \uffce\uffb413C signature increased slightly with increasing duration of cultivation by smallholders in the granitic sands and red clay soil where maize contributed 29% and 35% of the C at equilibrium. Under more productive commercial farming, the carbon derived from maize accounted for 50% of the total after 10\uffe2\uff80\uff83years of cultivation and 67% at equilibrium. The persistence of woodland carbon in the sandy soil is attributed to chemical stabilization resulting from large concentrations of lignin and polyphenols in the tree litter, or as charcoal.
", "keywords": ["2. Zero hunger", "agroecosystems", "c-13 natural-abundance", "carbon dynamics", "spodosols", "04 agricultural and veterinary sciences", "15. Life on land", "maize", "stabilization", "residues", "vegetation", "0401 agriculture", " forestry", " and fisheries", "sandy soils", "isotope"], "contacts": [{"organization": "Shamie Zingore, Ken E. Giller, Ken E. Giller, P. Nyamugafata, C. Manyame,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2389.2005.00707.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/European%20Journal%20of%20Soil%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-2389.2005.00707.x", "name": "item", "description": "10.1111/j.1365-2389.2005.00707.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2389.2005.00707.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-04-11T00:00:00Z"}}, {"id": "10.1111/j.1475-2743.2004.tb00363.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:18:41Z", "type": "Journal Article", "created": "2010-08-05", "title": "Effect Of A Legume Cover Crop (Mucuna Pruriens Var. Utilis) On Soil Carbon In An Ultisol Under Maize Cultivation In Southern Benin", "description": "Abstract. Long term fallow is no longer possible in densely populated tropical areas, but legume cover crops can help maintain soil fertility. Our work aimed to study changes in soil carbon in a sandy loam Ultisol in Benin, which involved a 12\uffe2\uff80\uff90year experiment on three maize cropping systems under manual tillage: traditional no\uffe2\uff80\uff90input cultivation (T), mineral fertilized cultivation (NPK), and association with Mucuna pruriens (M). The origin of soil carbon was also determined through the natural abundance of soil and biomass 13C. In T, NPK and M changes in soil carbon at 0\uffe2\uff80\uff9340 cm were \uffe2\uff88\uff920.2, +0.2 and +1.3 t C ha\uffe2\uff88\uff921 yr\uffe2\uff88\uff921, with residue carbon amounting to 3.5, 6.4 and 10.0 t C ha\uffe2\uff88\uff921 yr\uffe2\uff88\uff921, respectively. After 12 years of experimentation, carbon originating from maize in litter\uffe2\uff80\uff90plus\uffe2\uff80\uff90soil (0\uffe2\uff80\uff9340 cm) represented less than 4% of both total carbon and overall maize residue carbon. In contrast, carbon originating from mucuna in litter\uffe2\uff80\uff90plus\uffe2\uff80\uff90soil represented more than 50% of both total carbon and overall mucuna residue carbon in M, possibly due to accelerated mineralization of native soil carbon (priming effect) and slow mulch decomposition. Carbon originating from weeds in litter\uffe2\uff80\uff90plus\uffe2\uff80\uff90soil represented c. 10% of both total carbon and overall weed residue carbon in T and NPK. Thus mucuna mulch was very effective in promoting carbon sequestration in the soil studied.
", "keywords": ["Soil nutrients", "Carbon sequestration", "13C natural abundance", "[SDE] Environmental Sciences", "Soil management", "http://aims.fao.org/aos/agrovoc/c_7170", "Npk", "SOL CULTIVE", "F08 - Syst\u00e8mes et modes de culture", "Soil fertility", "Zea mays", "http://aims.fao.org/aos/agrovoc/c_875", "630", "plante de couverture", "Legume cover crops", "Benin", "http://aims.fao.org/aos/agrovoc/c_1301", "legume cover crop", "Mucuna pruriens", "http://aims.fao.org/aos/agrovoc/c_4971", "ANALYSE STATISTIQUE", "580", "LEGUMINEUSE TROPICALE", "Acrisol", "2. Zero hunger", "Tropical zones", "mucuna", "BIOMASSE", "http://aims.fao.org/aos/agrovoc/c_1936", "P35 - Fertilit\u00e9 du sol", "Green manure crops", "RESIDU VEGETAL", "http://aims.fao.org/aos/agrovoc/c_101", "04 agricultural and veterinary sciences", "15. Life on land", "Mucuna", "Soil carbon", "CARBONE ORGANIQUE", "soil organic carbon", "STOCK ORGANIQUE", "fertilit\u00e9 du sol", "MAIS", "http://aims.fao.org/aos/agrovoc/c_8504", "Farm/Enterprise Scale", "[SDE]Environmental Sciences", "FERTILISATION DU SOL", "0401 agriculture", " forestry", " and fisheries", "carbone"]}, "links": [{"href": "https://doi.org/10.1111/j.1475-2743.2004.tb00363.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.1475-2743.2004.tb00363.x", "name": "item", "description": "10.1111/j.1475-2743.2004.tb00363.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1475-2743.2004.tb00363.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-06-01T00:00:00Z"}}, {"id": "10.1111/j.1574-6941.2011.01192.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:18:43Z", "type": "Journal Article", "created": "2011-09-01", "title": "Soil Characteristics More Strongly Influence Soil Bacterial Communities Than Land-Use Type", "description": "To gain insight into the factors driving the structure of bacterial communities in soil, we applied real-time PCR, PCR-denaturing gradient gel electrophoreses, and phylogenetic microarray approaches targeting the 16S rRNA gene across a range of different land usages in the Netherlands. We observed that the main differences in the bacterial communities were not related to land-use type, but rather to soil factors. An exception was the bacterial community of pine forest soils (PFS), which was clearly different from all other sites. PFS had lowest bacterial abundance, lowest numbers of operational taxonomic units (OTUs), lowest soil pH, and highest C : N ratios. C : N ratio strongly influenced bacterial community structure and was the main factor separating PFS from other fields. For the sites other than PFS, phosphate was the most important factor explaining the differences in bacterial communities across fields. Firmicutes were the most dominant group in almost all fields, except in PFS and deciduous forest soils (DFS). In PFS, Alphaproteobacteria was most represented, while in DFS, Firmicutes and Gammaproteobacteria were both highly represented. Interestingly, Bacillii and Clostridium OTUs correlated with pH and phosphate, which might explain their high abundance across many of the Dutch soils. Numerous bacterial groups were highly correlated with specific soil factors, suggesting that they might be useful as indicators of soil status.", "keywords": ["land use change", "DNA", " Bacterial", "0301 basic medicine", "RNA 16S", "polymerase chain reaction", "soil nitrogen", "DNA sequence", "soil microorganism", "electrokinesis", "chemistry", "phylogeny", "Real-Time Polymerase Chain Reaction", "soil", "Soil", "03 medical and health sciences", "NIOO", "RNA", " Ribosomal", " 16S", "genetics", "soil carbon", "Phylogeny", "Soil Microbiology", "phosphate", "biodiversity", "Alphaproteobacteria", "Netherlands", "growth", " development and aging", "2. Zero hunger", "abundance", "0303 health sciences", "real time", "Bacteria", "pH", "Denaturing Gradient Gel Electrophoresis", "microbiology", "denaturing gradient gel electrophoresis", "Biodiversity", "Sequence Analysis", " DNA", "15. Life on land", "bacterium", "bacterial DNA", "phylogenetics", "classification", "real time polymerase chain reaction", "microbial community", "Gammaproteobacteria"]}, "links": [{"href": "https://doi.org/10.1111/j.1574-6941.2011.01192.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/FEMS%20Microbiology%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1574-6941.2011.01192.x", "name": "item", "description": "10.1111/j.1574-6941.2011.01192.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1574-6941.2011.01192.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-09-19T00:00:00Z"}}, {"id": "10.1111/nph.17996", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:18:47Z", "type": "Journal Article", "created": "2022-01-28", "title": "Effects of vegetation on soil cyanobacterial communities through time and space", "description": "Summary
Photoautotrophic soil cyanobacteria play essential ecological roles and are known to exhibit large changes in their diversity and abundance throughout early succession. However, much less is known about how and why soil cyanobacterial communities change as soil develops over centuries and millennia, and the effects that vegetation have on such communities.
We combined an extensive field survey, including 16 global soil chronosequences across contrasting ecosystems (from deserts to tropical forests), with molecular analyses to investigate how the diversity and abundance of photosynthetic and nonphotosynthetic soil cyanobacteria are affected by vegetation change during soil development, over time periods from hundreds to thousands of years.
We show that, in most chronosequences, the abundance, species richness and community composition of soil cyanobacteria are relatively stable as soil develops (from centuries to millennia). Regardless of soil age, forest chronosequences were consistently dominated by nonphotosynthetic cyanobacteria (Vampirovibrionia), while grasslands and shrublands were dominated by photosynthetic cyanobacteria. Chronosequences undergoing drastic vegetation shifts (e.g. transitions from grasslands to forests) experienced significant changes in the composition of soil cyanobacterial communities.
Our results advance our understanding of the ecology of cyanobacterial classes, and of the understudied nonphotosynthetic cyanobacteria in particular, and highlight the key role of vegetation as a major driver of their temporal dynamics as soil develops.
Glass formed in the first nuclear detonation shows zinc loss by evaporation, indicating similar volatile loss during lunar formation.", "keywords": ["2. Zero hunger", "ABUNDANCES", "DIFFERENTIATION", "ISOTOPIC EVIDENCE", "ORIGIN", "13. Climate action", "WATER", "[SDU.ASTR.EP] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]", "MANTLE", "POTASSIUM", "01 natural sciences", "Research Articles", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1126/sciadv.1602668"}, {"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.1602668", "name": "item", "description": "10.1126/sciadv.1602668", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1126/sciadv.1602668"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-02-03T00:00:00Z"}}, {"id": "10.1126/sciadv.1700571", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:18:50Z", "type": "Journal Article", "created": "2017-07-29", "title": "Gallium isotopic evidence for extensive volatile loss from the Moon during its formation", "description": "The Moon is depleted in volatile elements compared to Earth. Gallium isotopes indicate a global-scale evaporation event.
", "keywords": ["Earth and Planetary Astrophysics (astro-ph.EP)", "2. Zero hunger", "GIANT IMPACT", "FOS: Physical sciences", "MANTLE", "01 natural sciences", "LUNAR-SAMPLES", "[SDU] Sciences of the Universe [physics]", "ZINC", "ABUNDANCES", "DIFFERENTIATION", "ROCKS", "13. Climate action", "IMPACT ORIGIN", "EARTH", "Research Articles", "MAGMA OCEAN", "Astrophysics - Earth and Planetary Astrophysics", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1126/sciadv.1700571"}, {"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.1700571", "name": "item", "description": "10.1126/sciadv.1700571", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1126/sciadv.1700571"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-07-07T00:00:00Z"}}, {"id": "10.1186/s12862-022-02089-4", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:19:00Z", "type": "Journal Article", "created": "2022-11-17", "title": "Land use and soil characteristics affect soil organisms differently from above-ground assemblages", "description": "Abstract BackgroundLand-use is a major driver of changes in biodiversity worldwide, but studies have overwhelmingly focused on above-ground taxa: the effects on soil biodiversity are less well known, despite the importance of soil organisms in ecosystem functioning. We modelled data from a global biodiversity database to compare how the abundance of soil-dwelling and above-ground organisms responded to land use and soil properties.
ResultsWe found that land use affects overall abundance differently in soil and above-ground assemblages. The abundance of soil organisms was markedly lower in cropland and plantation habitats than in primary vegetation and pasture. Soil properties influenced the abundance of soil biota in ways that differed among land uses, suggesting they shape both abundance and its response to land use.
ConclusionsOur results caution against assuming models or indicators derived from above-ground data can apply to soil assemblages and highlight the potential value of incorporating soil properties into biodiversity models.
", "keywords": ["Land-use intensity", "0106 biological sciences", "570", "Evolution", "[SDV]Life Sciences [q-bio]", "Organism abundance", "soil biodiversity", "01 natural sciences", "soil biota", "mixed-effects models", "Soil", "land\u2011use intensity", "Land-use", " Land-use intensity", " Mixed-effects models", " Organism abundance", " Soil biodiversity", " Soil biota", "land-use", "QH359-425", "Soil biota", "land-use intensity", "Biology", "Land-use", "QH540-549.5", "Ecosystem", "Soil Microbiology", "2. Zero hunger", "Ecology", "Research", "Biology and Life Sciences", "Biodiversity", "04 agricultural and veterinary sciences", "15. Life on land", "organism abundance", "Soil biodiversity", "Biota", "[SDV] Life Sciences [q-bio]", "Chemistry", "land\u2011use", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Human medicine", "Mixed-effects models", "mixed\u2011effects models"]}, "links": [{"href": "https://www.iris.unict.it/bitstream/20.500.11769/647835/1/12862_2022_Article_2089.pdf"}, {"href": "https://doi.org/10.1186/s12862-022-02089-4"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/BMC%20Ecology%20and%20Evolution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1186/s12862-022-02089-4", "name": "item", "description": "10.1186/s12862-022-02089-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1186/s12862-022-02089-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-11-17T00:00:00Z"}}, {"id": "10.17169/refubium-31202", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:19:26Z", "type": "Journal Article", "created": "2021-05-21", "title": "Global data on earthworm abundance, biomass, diversity and corresponding environmental properties", "description": "AbstractEarthworms are an important soil taxon as ecosystem engineers, providing a variety of crucial ecosystem functions and services. Little is known about their diversity and distribution at large spatial scales, despite the availability of considerable amounts of local-scale data. Earthworm diversity data, obtained from the primary literature or provided directly by authors, were collated with information on site locations, including coordinates, habitat cover, and soil properties. Datasets were required, at a minimum, to include abundance or biomass of earthworms at a site. Where possible, site-level species lists were included, as well as the abundance and biomass of individual species and ecological groups. This global dataset contains 10,840 sites, with 184 species, from 60 countries and all continents except Antarctica. The data were obtained from 182 published articles, published between 1973 and 2017, and 17 unpublished datasets. Amalgamating data into a single global database will assist researchers in investigating and answering a wide variety of pressing questions, for example, jointly assessing aboveground and belowground biodiversity distributions and drivers of biodiversity change.
", "keywords": ["2401.17 Invertebrados", "0301 basic medicine", "592", "Data Descriptor", "Ecology and Evolutionary Biology", "earthworms", "Data Descriptor ; Biodiversity ; Biogeography ; Community ecology", "Plan_S-Compliant-OA", "https://purl.org/becyt/ford/1.6", "[SDV.EE.ECO] Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "Diversity data", "Biomass", "S Agriculture (General)", "Ekologia ja evoluutiobiologia", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "biodiversity", "2. Zero hunger", "maaper\u00e4", "abundance", "Data", "Diversity", "0303 health sciences", "Ecology", "Q", "eli\u00f6yhteis\u00f6t", "Biodiversity", "maaper\u00e4eli\u00f6st\u00f6", "ddc:", "Computer Science Applications", "Biogeography", "2401.06 Ecolog\u00eda animal", "international", "Statistics", " Probability and Uncertainty", "environment/Ecosystems", "Information Systems", "Statistics and Probability", "Ecolog\u00eda (Biolog\u00eda)", "570", "lierot", "Science", "Invertebrados", "577", "Global database", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "Library and Information Sciences", "574", "333", "soil", "eli\u00f6maantiede", "Education", "diversity", "03 medical and health sciences", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "BIODIVERSITY CHANGE", "Life Science", "Earthworms", "Datasets", "Animals", "Community ecology", "Oligochaeta", "https://purl.org/becyt/ford/1", "eartworm", "biogeography", "Ecosystem", "LAND-USE", "biomass", "500", "Biology and Life Sciences", "PLATFORM", "Global dataset", "Oligochaeta/classification", "500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie", "Ecolog\u00eda", "15. Life on land", "biodiversiteetti", "Environmental sciences", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "maaper\u00e4el\u00e4imist\u00f6", "Ecology", " evolutionary biology", "13. Climate action", "Earthworm", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", "570 Life sciences; biology", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "eartworm ; abundance ; biomass ; diversity", "COMMUNITIES", "community ecology"]}, "links": [{"href": "https://www.nature.com/articles/s41597-021-00912-z.pdf"}, {"href": "https://pub.epsilon.slu.se/25868/1/phillips_h_r_p_et_al_211019.pdf"}, {"href": "https://boris.unibe.ch/165726/1/48.__Global_data_on_earthworm_abundance__biomass__diversity_and_corresponding_environmental_properties.pdf"}, {"href": "https://www.iris.unict.it/bitstream/20.500.11769/509583/1/SCIENTIFIC%20DATA%20%282021%29%20GLOBAL%20DATA%20ON%20EARTHWORMS.pdf"}, {"href": "https://rau.repository.guildhe.ac.uk/id/eprint/16454/1/Phillips_et_al-2021-Scientific_Data.pdf"}, {"href": "https://doi.org/10.17169/refubium-31202"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Data", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.17169/refubium-31202", "name": "item", "description": "10.17169/refubium-31202", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.17169/refubium-31202"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-05-21T00:00:00Z"}}, {"id": "10.1556/168.2017.18.3.7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:19:20Z", "type": "Journal Article", "created": "2018-02-12", "title": "Phytophagous hoverflies (Diptera: Syrphidae) as indicators of changing landscapes", "description": "Spatial and temporal differences in landscape patterns are of considerable interest for understanding ecological processes. In this study, we assessed habitat quality by using the Syrph The Net database and data on decreasing species richness over a 25-year period for the two largest phytophagous hoverfly genera (Merodon and Cheilosia). Furthermore, within this time frame, we explored congruence between ecological responses (species richness and Biodiversity Maintenance Function for these two genera) and landscape structural changes through correlation analysis. Our results indicate that landscapes have experienced changes in aggregation, isolation/connectivity and landscape diversity, with these parameters being significantly correlated with Cheilosia species richness loss and habitat quality. We conclude that the genus Cheilosia is a good bioindicator that can highlight not only the current quality of an area but also temporal changes in landscape patterns.", "keywords": ["0106 biological sciences", "MODELS", "INSECTS", "DIVERSITY", "LAND COVER CHANGE", "Cheilosia", "Land cover change", "01 natural sciences", "BIOINDICATORS", "CONNECTIVITY", "RICHNESS", "FORESTS", "14. Life underwater", "Merodon", "Connectivity", "LAND-USE", "Landscape structure", "Bioindicators; Cheilosia; Connectivity; Insects; Land cover change; Landscape structure; Merodon; Species richness", "15. Life on land", "EXTINCTION RISK", "Insects", "Ecology", " evolutionary biology", "QH540 Ecology / \u00f6kol\u00f3gia", "Bioindicators", "BIODIVERSITY", "ABUNDANCE", "Species richness", "RESPONSES"]}, "links": [{"href": "https://akademiai.com/doi/pdf/10.1556/168.2017.18.3.7"}, {"href": "https://doi.org/10.1556/168.2017.18.3.7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Community%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1556/168.2017.18.3.7", "name": "item", "description": "10.1556/168.2017.18.3.7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1556/168.2017.18.3.7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-12-01T00:00:00Z"}}, {"id": "10.1590/s0103-90162008000300009", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:19:23Z", "type": "Journal Article", "created": "2008-07-10", "title": "Changes In Soil Organic Matter Under Different Land Management In Misiones Province (Argentina)", "description": "Highly weathered tropical soils rapidly loose soil organic matter (SOM) and may be affected by water erosion and soil compaction after deforestation and intensive cultivation. With the main objective to estimate the SOM balances in a subtropical soil we determined the dynamics of SOM in a degraded yerba mate (Ilex paraguaiensis Saint Hil.) plantation introduced after deforestation and with elephant grass (Pennisetum purpureum L.) as a cover crop. The study site was in Misiones, Argentina, and we use the natural 13C abundance methodology and a descriptive model. The study was conducted on three contiguous 50 x 100 m plots of a typic Kandihumult soil with: (i) native forest, (ii) 50 years of continuous yerba mate monoculture with intensive tillage, and (iii) yerba mate associated with elephant grass as a cover crop and no tillage. We determined bulk density, carbon (C), nitrogen (N) and 13C content of the soil (0 - 0.05, 0.05 - 0.15 m layers) and the grass biomass. Yerba mate monoculture reduced soil C and N content as well as porosity at 0 - 0.15 m depth by 43 and 23%, respectively, as compared to the native forest. After ten years of yerba mate - elephant grass association soil C and N contents at the same depth increased by 19 and 12%, respectively, compared to the yerba mate monoculture, while soil porosity remained similar. Total C input,13C, and soil organic C were incorporated into a three compartment model to evaluate elephant grass C dynamics. Through the natural 13C abundance methodology we tracked the elephant grass C incorporation and the 'old' soil C loss, and determined the model parameters - humification (k1) and mineralization (k) coefficients and stable C (Cs)- unambiguously. The high k1 and k predicted by the model are probably explained by elephant grass root system incorporation under no tillage and humid subtropical climate, respectively. In soil under yerba mate monoculture, Cs was counted as 91% of the total soil organic C.
", "keywords": ["2. Zero hunger", "Ilex paraguaiensis;Pennisetum purpureum;natural C-13 abundance;soil carbon;modelling", "sol", "550", "carbono do solo", "[SDV]Life Sciences [q-bio]", "argentine", "culture intensive", "04 agricultural and veterinary sciences", "15. Life on land", "630", "[SDV] Life Sciences [q-bio]", "Pennisetum purpureum", "modelling", "Ilex paraguaiensis", "natural C-13 abundance", "mati\u00e8re organique", "modeliza\u00e7\u00e3o", "biomasse", "0401 agriculture", " forestry", " and fisheries", "soil carbon", "am\u00e9rique du sud", "abund\u00e2ncia natural em 13C", "natural 13C abundance"], "contacts": [{"organization": "Piccolo, Gabriel Agust\u00edn, Andriulo, Adri\u00e1n Enrique, Mary, Bruno,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1590/s0103-90162008000300009"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientia%20Agricola", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/s0103-90162008000300009", "name": "item", "description": "10.1590/s0103-90162008000300009", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/s0103-90162008000300009"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-01-01T00:00:00Z"}}, {"id": "10.17221/234/2009-pse", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:19:27Z", "type": "Journal Article", "created": "2018-02-10", "title": "Relation Between Chemical Indices Of Soil And Earthworm Abundance Under Chemical Fertilization", "description": "The study intended to establish how the dynamics of earthworms (Oligochaeta: Lumbricidae) changes in soil (abundance, biomass), under conditions of mineral fertilization with nitrogen and phosphorous in four different doses, in a 33-year experimental placement in the west of Romania, in wheat-soybean-maize-barley rotation. The soil indices taken into study were: pH, humus, total nitrogen, phosphorous and potassium. Statistical connections between the studied factors were realized using the dispersion analysis ANOVA and the SPSS Software (Statistical Package for the Social Sciences). The study showed an increase of earthworm abundance and biomass under conditions of chemical fertilization with nitrogen and phosphorous. The highest number of earthworms was recorded in the treatment with the largest dose of nitrogen fertilizer (by 85.85% higher compared to the control treatment). The greatest positive influence on earthworm abundance and biomass was manifested in humus and total nitrogen. The greatest negative influence on earthworm abundance was found in pH factor, while phosphorous content of soil exerted the greatest negative influence on earthworm biomass.", "keywords": ["2. Zero hunger", "abundance", "biomass", "nitrogen and phosphorous fertilization", "Plant culture", "0401 agriculture", " forestry", " and fisheries", "earthworms", "04 agricultural and veterinary sciences", "SB1-1110"]}, "links": [{"href": "https://doi.org/10.17221/234/2009-pse"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%2C%20Soil%20and%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.17221/234/2009-pse", "name": "item", "description": "10.17221/234/2009-pse", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.17221/234/2009-pse"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-09-30T00:00:00Z"}}, {"id": "10.5061/dryad.b4s71jj", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:20:56Z", "type": "Dataset", "title": "Data from: Litter carbon and nutrient chemistry control the magnitude of soil priming effect", "description": "unspecifiedLitter Chem_characteristicsThis Excel document includes the raw data for analysed in the manuscript including leaf litter C leachates, lignin, cellulose, hemicellulose, tannin, C, N, P, Ca, K, Mg, Mn concentrations and Lignin:N, and litter decomposition rates and soil priming effect.Litter Chem\uff0cDeco & PE.xls", "keywords": ["13C natural abundance", "soil organic carbon", "carbon mineralization", "soil priming effect", "litter chemistry", "15. Life on land", "C4 soil"], "contacts": [{"organization": "Chao, Lin, Liu, Yanyan, Freschet, Gr\u00e9goire, Zhang, Weidong, Yu, Xin, Zheng, Wenhui, Guan, Xin, Yang, Qingpeng, Chen, Longchi, Dijkstra, Feike, wang, Silong, Dijkstra, Feike A.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5061/dryad.b4s71jj"}, {"rel": "self", "type": "application/geo+json", "title": "10.5061/dryad.b4s71jj", "name": "item", "description": "10.5061/dryad.b4s71jj", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5061/dryad.b4s71jj"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-09T00:00:00Z"}}, {"id": "10.3847/2041-8213/ab2044", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:20:42Z", "type": "Journal Article", "created": "2019-05-23", "title": "Timing and Origin of the Angrite Parent Body Inferred from Cr Isotopes", "description": "AbstractAngrite meteorites are some of the oldest materials in the solar system. They provide important information on the earliest evolution of the solar system and accretion timescales of protoplanets. Here, we show that the 54Cr/52Cr ratio is homogeneously distributed among angrite meteorites within 13 parts per million, indicating that precursor materials must have experienced a global-scale melting such as a magma ocean. The 53Cr/52Cr and Mn/Cr ratios are correlated, which is evidence for an initial 53Mn/55Mn ratio of (3.16\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.11)\uffc2\uffa0\uffc3\uff97\uffc2\uffa010\uffe2\uff88\uff926. When anchored to the U-corrected Pb\uffe2\uff80\uff93Pb age for the D\uffe2\uff80\uff99Orbigny angrite, this initial 53Mn/55Mn corresponds to an absolute age of 4563.2\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.3 Ma, i.e., 4.1\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.3 Ma after Ca\uffe2\uff80\uff93Al-rich inclusion-formation. This age is distinct from that of the volatile depletion events dated by the 87Sr/86Sr initial ratio and therefore must correspond to the age of crystallization of the magma ocean and crust formation of the angrite parent body (APB), which can also constrain a slightly bigger size of APB than that of Vesta. Furthermore, this age is similar to those obtained from internal isochrons of the oldest volcanic angrites that cooled rapidly at the surface of the parent body (with ages of 4564 \uffe2\uff88\uffbc 4563 Ma), while older than those obtained from plutonic angrites (4561 \uffe2\uff88\uffbc 4556 Ma) that cooled down slowly, located deeper within the parent body. This implies that cooling of the APB took at least \uffe2\uff88\uffbc8 Myr after its differentiation.
", "keywords": ["570", "[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]", "550", "meteoroids -nuclear reactions", "astrochemistry", "abundances", "nucleosynthesis", "[SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph]", "01 natural sciences", "520", "meteorites", "astrochemistry -meteorites", "meteorites", " meteors", " meteoroids", "nuclear reactions", " nucleosynthesis", " abundances", "13. Climate action", "meteors", "meteoroids", "nuclear reactions", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.3847/2041-8213/ab2044"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/The%20Astrophysical%20Journal%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3847/2041-8213/ab2044", "name": "item", "description": "10.3847/2041-8213/ab2044", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3847/2041-8213/ab2044"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-05-20T00:00:00Z"}}, {"id": "10.4067/s0718-58392015000500015", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:20:45Z", "type": "Journal Article", "created": "2015-10-09", "title": "Effect Of Chemical Fertilization And Green Manure On The Abundance And Community Structure Of Ammonia Oxidizers In A Paddy Soil", "description": "Ammonia oxidization is a critical step in the soil N cycle and can be affected by the fertilization regimes. Chinese milk-vetch (Astragalus sinicus L., MV) is a major green manure of rice (Oryza sativa L.) fields in southern China, which is recommended as an important agronomic practice to improve soil fertility. Soil chemical properties, abundance and community structures of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) in a MV-rice rotation field under different fertilization regimes were investigated. The field experiment included six treatments: control, without MV and chemical fertilizer (CK); 100% chemical fertilizer (NPK); 18 000 kg MV ha-1 plus 100% chemical fertilizer (NPKM1); 18 000 kg MV ha-1 plus 40% chemical fertilizer (NPKM2); 18 000 kg MV ha-1 alone (MV); and 18 000 kg MV ha-1 plus 40% chemical fertilizer plus straw (NPKMS). Results showed that NPKMS treatment could improve the soil fertility greatly although the application of 60% chemical fertilizer. The abundance of AOB only in the MV treatment had significant difference with the control; AOA were more abundant than AOB in all corresponding treatments. The NPKMS treatment had the highest AOA abundance (1.19 x 108 amoA gene copies g-1) and the lowest abundance was recorded in the CK treatment (3.21 x 107 amoA gene copies g-1). The abundance of AOA was significantly positively related to total N, available N, NH4+-N, and NO3--N. The community structure of AOA exhibited little variation among different fertilization regimes, whereas the community structure of AOB was highly responsive. Phylogenetic analysis showed that all AOB sequences were affiliated with Nitrosospira or Nitrosomonas and all AOA denaturing gradient gel electrophoresis (DGGE) bands belonged to the soil and sediment lineage. These findings could be fundamental to improve our understanding of AOB and AOA in the N cycle in the paddy soil.", "keywords": ["0301 basic medicine", "2. Zero hunger", "0303 health sciences", "03 medical and health sciences", "Astragalus sinicus", "soil chemical properties", "Abundance", "ammonia-oxidizing bacteria (AOB)", "Chinese milk vetch", "community structure", "15. Life on land", "ammonia-oxidizing archaea (AOA)", "6. Clean water"], "contacts": [{"organization": "Fang, Yu, Yan, Zhi-Lei, Chen, Ji-Chen, Wang, Fei, Wang, Ming-Kuang, Lin, Xin-Jian,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.4067/s0718-58392015000500015"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chilean%20journal%20of%20agricultural%20research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.4067/s0718-58392015000500015", "name": "item", "description": "10.4067/s0718-58392015000500015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.4067/s0718-58392015000500015"}, {"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": "10.5061/dryad.g1jwstqx5", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:20:58Z", "type": "Dataset", "created": "2023-09-27", "title": "Microbial traits dictate soil neromass accumulation coefficient: A global synthesis", "description": "unspecified# Readme **Title** Microbial necromass carbon accumulation coefficients (NAC) dataset **Author** Bingbing Han, Yanzhong Yao, Yini Wang, Xiaoxuan Su, Lihua Ma, Xinping Chen, Zhaolei Li * **Corresponding author:** Zhaolei Li, Professor E-mail: lizhaolei@swu.edu.cn **Correspondence address:** College of Resources and Environment, and Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China **Data abstract** The accumulation of microbial necromass carbon has drawn mounting attention due to the slow decomposition. However, it remains unclear what determines the microbial necromass carbon accumulation via reiterated community turnover on large spatial scales. This study aimed to explore the characteristics of soil necromass carbon accumulation in terrestrial ecosystems. A dataset was compiled with 993 observations on the coefficient of microbial carbon accumulation in the equilibrium from 82 peer-reviewed papers. The linear mixed-effect models and structural equation models were used to ascertain the controlling factors of NAC on a global scale. The average NAC was higher in croplands (28.2) and forests (26.8) than that in grasslands (21.1). Although the edaphic factors seemingly affect the NAC whereby the NAC lowered in soils with high levels of pH and clay content on a global scale, the biotic factors, particularly for the living microorganism abundance and microbial biomass nitrogen content, were the pivotal drivers of NAC that accounted for approximately 42.5% of the geographic variances in NAC. More organic carbon was likely to be preserved in soil with a higher NAC regardless of ecosystem types. Novel findings on the overriding controls from the living microorganism abundance and microbial biomass nitrogen in driving NAC raise an urgent need for viable strategies in manipulating microbial characteristics for carbon sequestrations. **Data collect** The NACs dataset was compiled from peer-reviewed papers. These peer-reviewed papers were obtained by means of two platforms: the Web of Science ([http://apps.webofkonwledge.com](http://apps.webofkonwledge.com)) and the China National Knowledge Infrastructure Database ([http://www.cnki.net](http://www.cnki.net)). At the same time, the papers were supplemented by Google Scholar. The keywords used to search papers are soil microbial biomass AND microbial necromass AND microbial residue * AND amino sugar * AND PLFAs. The publishing date for the peer-reviewed paper was up to January 20, 2023. The eligible peer-reviewed papers matched the following criteria: (1) Soil microbial necromass was measured using amino sugars as markers; (2) The living microorganisms were determined by phospholipid fatty acid (PLFAs). Finally, the NAC dataset was constructed based on the 82 peer-reviewed papers. The details of the experimental site were also extracted from papers, including the geographic information of the experiment site (i.e., latitude and longitude), climate conditions (i.e., mean annual temperature and mean annual precipitation), and ecosystem types (i.e., grasslands, forests, and croplands). Additionally, soil physicochemical properties [soil pH, the ratio of carbon to nitrogen (soil C: N), total nitrogen (TN), bulk density (BD), clay content, and ammonium content (NH4+)] and the number of replicates were also extracted from the articles. Additionally, in the NAC dataset, the empty cells are representing the data scarcity (i.e., NA values). You should know that not every article will contain all the metrics. **Data analysis** The content of fungal and bacterial necromass carbon was calculated based on the concentrations of amino sugar in microbial cell walls: glucosamine and muramic acid. The bacterial necromass carbon and fungal necromass carbon were calculated using equations (1) and (2). where, MurA is muramic acid and GlcN is glucosamine. In equation (1), 45 is the conversion factor from MurA to bacterial necromass carbon; in equation (2), 9 is the conversion factor from GlcN to fungal necromass carbon; while 179.17 and 251.23 are the molecule weights of GlcN and MurA, respectively. Total microbial necromass carbon was the sum of fungal necromass carbon and bacterial necromass carbon. For the absence of microbial biomass carbon (MBC) in some experimental sites. The NAC functions as the ratio of the microbial necromass carbon to microbial biomass carbon: where MBC is soil microbial biomass carbon. The linear mixed-effect models were used to test the bivariate relationship between the NAC and environmental factor by means of *lme4* packages in R (version 4.2.2., R Core Team). The equation (4) was: where NAC refers to the microbial necromass carbon accumulation coefficient, lnX is the logarithm of each edaphic and climatic factor (except for soil pH and fungi: bacteria ratio), refers to the intercept of this model, refers to the slope value, refers to the random effect of study, refers to the sampling error. **Document Type** We will upload it in data _NAC _2023.csv format to the Dryad database. The main variables collected in the data form were muramic acid (MurA) and glucosamine (GlcN). We perform the calculation of NAC based on equations 1, 2, and 3 above. Total biomass represents the abundance of living microorganisms. Fungal biomass represents the abundance of fungi. Bacterial biomass represents the abundance of bacteria. MBC is microbial biomass nitrogen. SOC is soil organic carbon. **Data processing software** We processed the entire set of data by utilizing the R language, version 4.2.2., R Core Team. **Contact Information** **Corresponding author:** Zhaolei Li, Professor **E-mail:** [lizhaolei@swu.edu.cn](mailto:lizhaolei@swu.edu.cn) **ORCID:** [https://orcid.org/0000-0001-8767-1277](https://orcid.org/0000-0001-8767-1277)", "keywords": ["2. Zero hunger", "microbial abundance", "soil carbon sequestration", "microbial necromass carbon", "living microbes", "FOS: Earth and related environmental sciences", "15. Life on land", "microbial carbon pump", "ecosystem type"], "contacts": [{"organization": "Han, Bingbing, Yao, Yan Zhong, Wang, Yini, Su, Xiaoxuan, Ma, Lihua, Chen, Xinping, Li, Zhaolei,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5061/dryad.g1jwstqx5"}, {"rel": "self", "type": "application/geo+json", "title": "10.5061/dryad.g1jwstqx5", "name": "item", "description": "10.5061/dryad.g1jwstqx5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5061/dryad.g1jwstqx5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-10-05T00:00:00Z"}}, {"id": "10.5061/dryad.sbcc2frbh", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:21:02Z", "type": "Dataset", "title": "Root functional traits determine the magnitude of the rhizosphere priming effect among eight tree species", "description": "Rhizosphere priming effect\u00a0can accelerate or decelerate the decomposition of soil organic matter.\u00a0Using a natural abundance 13C tracer method allowing partitioning of native soil organic carbon (SOC) decomposition and plant rhizosphere respiration, we studied the effects of eight tree species on the strength of the rhizosphere priming. All tree species enhanced the rate of SOC decomposition, by 82% on average.\u00a0Mean diameter of first-order roots and root exudate-derived respiration were positively correlated with the RPE, together explaining a large part of the observed variation in the RPE (R2 = 0.72), whereas root branching density was negatively associated with the RPE. Path analyses further suggested that mean diameter of first-order roots was the main driver of the RPE owing to its positive direct effect on the RPE and its indirect effects via root exudate-derived respiration and root branching density. These results demonstrate that the magnitude of the RPE is regulated by complementary aspects of root morphology, architecture and physiology, implying that comprehensive approaches are needed to reveal the multiple mechanisms driving plant effects on the RPE.", "keywords": ["13C natural abundance", "Plant functional traits", "rhizosphere priming effect", "Fine roots", "15. Life on land", "FOS: Natural sciences"], "contacts": [{"organization": "Chao, Lin, Liu, Yanyan, Zhang, Weidong, Wang, Qingkui, Guan, Xin, Yang, Qingpeng, Chen, Longchi, Zhang, Jianbing, Hu, Baoqing, Liu, Zhanfeng, Wang, Silong, Freschet, Gr\u00e9goire T.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5061/dryad.sbcc2frbh"}, {"rel": "self", "type": "application/geo+json", "title": "10.5061/dryad.sbcc2frbh", "name": "item", "description": "10.5061/dryad.sbcc2frbh", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5061/dryad.sbcc2frbh"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-02-20T00:00:00Z"}}, {"id": "10.5194/bg-8-353-2011", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:21:10Z", "type": "Journal Article", "created": "2011-02-14", "title": "Free Atmospheric Co2 Enrichment Increased Above Ground Biomass But Did Not Affect Symbiotic N-2-Fixation And Soil Carbon Dynamics In A Mixed Deciduous Stand In Wales", "description": "Abstract. Through increases in net primary production (NPP), elevated CO2 is hypothesized to increase the amount of plant litter entering the soil. The fate of this extra carbon on the forest floor or in mineral soil is currently not clear. Moreover, increased rates of NPP can be maintained only if forests can escape nitrogen limitation. In a Free atmospheric CO2 Enrichment (FACE) experiment near Bangor, Wales, 4 ambient and 4 elevated [CO2] plots were planted with patches of Betula pendula, Alnus glutinosa and Fagus sylvatica on a former arable field. After 4 years, biomass averaged for the 3 species was 5497 (se 270) g m\uffe2\uff88\uff922 in ambient and 6450 (se 130) g m\uffe2\uff88\uff922 in elevated [CO2] plots, a significant increase of 17% (P = 0.018). During that time, only a shallow L forest floor litter layer had formed due to intensive bioturbation. Total soil C and N contents increased irrespective of treatment and species as a result of afforestation. We could not detect an additional C sink in the soil, nor were soil C stabilization processes affected by elevated [CO2]. We observed a decrease of leaf N content in Betula and Alnus under elevated [CO2], while the soil C/N ratio decreased regardless of CO2 treatment. The ratio of N taken up from the soil and by N2-fixation in Alnus was not affected by elevated [CO2]. We infer that increased nitrogen use efficiency is the mechanism by which increased NPP is sustained under elevated [CO2] at this site.
", "keywords": ["rotation poplar plantation", "0106 biological sciences", "0301 basic medicine", "elevated co2", "QE1-996.5", "Ecology", "dinitrogen fixation", "mineral soil", "natural n-15 abundance", "face", "Geology", "alnus-glutinosa", "15. Life on land", "pine forest", "01 natural sciences", "03 medical and health sciences", "Life", "13. Climate action", "QH501-531", "nitrogen-use efficiency", "organic-matter", "QH540-549.5"]}, "links": [{"href": "https://doi.org/10.5194/bg-8-353-2011"}, {"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-8-353-2011", "name": "item", "description": "10.5194/bg-8-353-2011", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/bg-8-353-2011"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-02-14T00:00:00Z"}}, {"id": "10.5194/bgd-8-11107-2011", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:21:10Z", "created": "2011-11-18", "description": "Abstract. Clarifying which factors cause an increase or decrease in soil organic carbon (SOC) after agricultural abandonment requires integration of data on the temporal dynamics of the plant community and SOC. A chronosequence of abandoned vineyards was studied on a volcanic island (Pantelleria, Italy). Vegetation in the abandoned fields was initially dominated by annual and perennial herbs, then by Hyparrhenia hirta (L.) Stapf, and finally by woody communities. As a consequence, the dominant photosynthetic pathway changed from C3 to C4 and then back to C3. Conversion of a plant community dominated by one photosynthetic pathway to another changes the 13C/12C ratio of inputs to soil organic carbon (SOC). Using the time since abandonment and the shift in belowground \uffce\uffb413C of SOC relative to the aboveground \uffce\uffb413C plant community, we estimated SOC turnover rate. SOC content (g kg\uffe2\uff88\uff921) increased linearly (R2 = 0.79 and 0.73 for 0\uffe2\uff80\uff9315 and 15\uffe2\uff80\uff9330 cm soil depth) with the age of abandonment, increasing from 12 g kg\uffe2\uff88\uff921 in cultivated vineyards to as high as 26 g kg\uffe2\uff88\uff921 in the last stage of the succession. \uffce\uffb413C increased in the bulk soil and its three fractions during succession, but only for soil fractions the effects of soil depth and its interaction with succession age were significant. Polynomial curves described the change in \uffce\uffb413C over the chronosequence for both depths. \uffce\uffb413C in the bulk soil had increased from \uffe2\uff88\uff9228 to \uffe2\uff88\uff9224\uffe2\uff80\uffb0 by 30 yr after abandonment for both depths but then decreased to \uffe2\uff88\uff9226\uffe2\uff80\uffb0 at 60 yr after abandonment (corresponding with maturity of the woody plant community). Overall, the results indicate that abandoned vineyards on volcanic soil in a semi-arid environment are C sinks and that C storage in these soils is closely related to plant succession.
", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Soil organic carbon", " carbon natural abundance"], "contacts": [{"organization": "NOVARA, Agata, GRISTINA, Luciano, LA MANTIA, Tommaso, RUHL, Juliane,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5194/bgd-8-11107-2011"}, {"rel": "self", "type": "application/geo+json", "title": "10.5194/bgd-8-11107-2011", "name": "item", "description": "10.5194/bgd-8-11107-2011", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/bgd-8-11107-2011"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-11-18T00:00:00Z"}}, {"id": "10261/356392", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:23:50Z", "type": "Journal Article", "created": "2021-12-19", "title": "Stimulation of ammonia oxidizer and denitrifier abundances by nitrogen loading: Poor predictability for increased soil N2O emission", "description": "AbstractUnprecedented nitrogen (N) inputs into terrestrial ecosystems have profoundly altered soil N cycling. Ammonia oxidizers and denitrifiers are the main producers of nitrous oxide (N2O), but it remains unclear how ammonia oxidizer and denitrifier abundances will respond to N loading and whether their responses can predict N\uffe2\uff80\uff90induced changes in soil N2O emission. By synthesizing 101 field studies worldwide, we showed that N loading significantly increased ammonia oxidizer abundance by 107% and denitrifier abundance by 45%. The increases in both ammonia oxidizer and denitrifier abundances were primarily explained by N loading form, and more specifically, organic N loading had stronger effects on their abundances than mineral N loading. Nitrogen loading increased soil N2O emission by 261%, whereas there was no clear relationship between changes in soil N2O emission and shifts in ammonia oxidizer and denitrifier abundances. Our field\uffe2\uff80\uff90based results challenge the laboratory\uffe2\uff80\uff90based hypothesis that increased ammonia oxidizer and denitrifier abundances by N loading would directly cause higher soil N2O emission. Instead, key abiotic factors (mean annual precipitation, soil pH, soil C:N ratio, and ecosystem type) explained N\uffe2\uff80\uff90induced changes in soil N2O emission. Altogether, these findings highlight the need for considering the roles of key abiotic factors in regulating soil N transformations under N loading to better understand the microbially mediated soil N2O emission.Microorganisms carrying pmoA and nosZ genes are major drivers of methane and nitrous oxide fluxes from soils. However, most studies on these organisms have been conducted in mesic ecosystems; therefore, little is known about the factors driving their distribution in drylands, the largest biome on Earth. We conducted a global survey to evaluate the role of climate\uffe2\uff80\uff90 and soil\uffe2\uff80\uff90related variables as predictors of the richness, abundance and community structure of bacteria carrying pmoA and nosZ genes.
LocationEighty dryland ecosystems distributed worldwide.
Time periodFrom February 2006 to December 2011.
Major taxa studiedMethanotrophic (carrying the pmoA gene) and denitrifiying (carrying the nosZ gene) bacteria.
MethodsWe used data from a field survey and structural equation modelling to evaluate the direct and indirect effects of climatic (aridity, rainfall seasonality and mean annual temperature) and soil (organic carbon, pH and texture) variables on the total abundance, richness and community structure of microorganisms carrying pmoA and nosZ genes.
ResultsTaxa related to Methylococcus capsulatus or Methylocapsa sp., often associated with mesic environments, were common in global drylands. The abundance and richness of methanotrophs were not associated with climate or soil properties. However, mean annual temperature, rainfall seasonality, organic C, pH and sand content were highly correlated with their community structure. Aridity and soil variables, such as sand content and pH, were correlated with the abundance, community structure and richness of the nosZ bacterial community.
Main conclusionsOur study provides new insights into the drivers of the abundance, richness and community structure of soil microorganisms carrying pmoA and nosZ genes in drylands worldwide. We highlight how ongoing climate change will alter the structure of soil microorganisms, which might affect the net CH4 exchange and will probably reduce the capacity of dryland soils to carry out the final step of denitrification, favouring net N2O emissions.