{"type": "FeatureCollection", "features": [{"id": "10.1016/j.scitotenv.2004.12.066", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:17:24Z", "type": "Journal Article", "created": "2005-03-11", "title": "Assessment Of Lead Availability In Contaminated Soil Using Isotope Dilution Techniques", "description": "Isotope dilution methods using a stable isotope tracer ((207)Pb) were developed for the determination of Pb availability in contaminated soils. The methods included determination of E values (isotopically exchangeable pool), L values (plant labile pool) and isotopic exchange kinetics (IEK). Isotopically exchangeable Pb was monitored at different exchange times based on measurement of the (207)Pb/(208)Pb ratio in soil solution following addition of the tracer. The rate of decrease in the (207)Pb/(208)Pb ratio in solution could be described by using the same IEK equation as used previously with radioisotope tracers. The amounts of isotopically exchangeable Pb in Pb-contaminated soils estimated from long-term IEK parameters were in good agreement with directly determined E values up to 15 days. However, values of some of the fitted IEK parameters cast doubts on the validity of using the IEK approach with (207)Pb, most probably as a result of irreversible fixation of some of the spike by reactive surfaces in the soils. Estimation of isotopically exchangeable Pb using short-term kinetics data was unsuccessful, substantially underestimating E values. Results for the control (uncontaminated) soil were highly variable, most probably as a result of fixation of tracer by the soil and poor analytical precision due to low solution Pb concentrations. A compartmental analysis of the variation in E values with time indicates a good potential for estimating bioavailable Pb in contaminated soils. The amounts of available Pb obtained from summation of the E(1)(min) and E(1 min-24 h) pools (E((available))), accounting for an average of 57.62% of total soil Pb, were significantly correlated with both the L values and with Pb extracted from soil with EDTA.", "keywords": ["Isotopes", "Lead", "Indicator Dilution Techniques", "Soil Pollutants", "01 natural sciences", "Edetic Acid", "6. Clean water", "Chelating Agents", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2004.12.066"}, {"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.2004.12.066", "name": "item", "description": "10.1016/j.scitotenv.2004.12.066", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2004.12.066"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-09-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2013.03.090", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:17:25Z", "type": "Journal Article", "created": "2013-04-24", "title": "Microbial Utilisation Of Biochar-Derived Carbon", "description": "Whilst largely considered an inert material, biochar has been documented to contain a small yet significant fraction of microbially available labile organic carbon (C). Biochar addition to soil has also been reported to alter soil microbial community structure, and to both stimulate and retard the decomposition of native soil organic matter (SOM). We conducted a short-term incubation experiment using two (13)C-labelled biochars produced from wheat or eucalypt shoots, which were incorporated in an aridic arenosol to examine the fate of the labile fraction of biochar-C through the microbial community. This was achieved using compound specific isotopic analysis (CSIA) of phospholipid fatty acids (PLFAs). A proportion of the biologically-available fraction of both biochars was rapidly (within three days) utilised by gram positive bacteria. There was a sharp peak in CO2 evolution shortly after biochar addition, resulting from rapid turnover of labile C components in biochars and through positive priming of native SOM. Our results demonstrate that this CO2 evolution was at least partially microbially mediated, and that biochar application to soil can cause significant and rapid changes in the soil microbial community; likely due to addition of labile C and increases in soil pH.", "keywords": ["Carbon sequestration", "[SDE] Environmental Sciences", "Carbon Sequestration", "Chromatography", " Gas", "Magnetic Resonance Spectroscopy", "550", "short term", "[SDV]Life Sciences [q-bio]", "growth", "black carbon", "Char", "01 natural sciences", "630", "Mass Spectrometry", "c 13 plfa", "Black carbon", "soil organic matter", "Soil Pollutants", "mineralization", "Organic carbon", "Phospholipids", "Soil Microbiology", "char", "0105 earth and related environmental sciences", "2. Zero hunger", "Carbon Isotopes", "decomposition", "wheat straw", "biomass", "organic carbon", "Fatty Acids", "Western Australia", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "540", "pyrolysis", "forest soil", "carbon sequestration", "Carbon", "[SDV] Life Sciences [q-bio]", "Charcoal", "[SDE]Environmental Sciences", "0401 agriculture", " forestry", " and fisheries", "community structure", "\u00b9\u00b3C-PLFA", "Pyrolysis"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2013.03.090"}, {"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.2013.03.090", "name": "item", "description": "10.1016/j.scitotenv.2013.03.090", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2013.03.090"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-11-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2015.12.107", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:17:26Z", "type": "Journal Article", "created": "2016-01-09", "title": "Partitioning Of Carbon Sources Among Functional Pools To Investigate Short-Term Priming Effects Of Biochar In Soil: A C-13 Study", "description": "Biochar sequesters carbon (C) in soils because of its prolonged residence time, ranging from several years to millennia. In addition, biochar can promote indirect C-sequestration by increasing crop yield while, potentially, reducing C-mineralization. This laboratory study was set up to evaluate effects of biochar on C-mineralization with due attention to source appointment by using (13)C isotope signatures. An arable soil (S) (7.9 g organic C, OC kg(-1)) was amended (single dose of 10 g kg(-1) soil) with dried, grinded maize stover (leaves and stalks), either natural (R) or (13)C enriched (R*), and/or biochar (B/B*) prepared from the maize stover residues (450 \u00b0C). Accordingly, seven different combinations were set up (S, SR, SB, SR*, SB*, SRB*, SR*B) to trace the source of C in CO2 (180 days), dissolved organic-C (115 days) and OC in soil aggregate fractions (90 days). The application of biochar to soil reduced the mineralization of native soil organic C but the effect on maize stover-C mineralization was not consistent. Biochar application decreased the mineralization of the non-enriched maize stover after 90 days, this being consistent with a significant reduction of dissolved organic C concentration from 45 to 18 mg L(-1). However, no significant effect was observed for the enriched maize stover, presumably due to differences between the natural and enriched materials. The combined addition of biochar and enriched maize stover significantly increased (twofold) the presence of native soil organic C or maize derived C in the free microaggregate fraction relative to soil added only with stover. Although consistent effects among C sources and biochar materials remains elusive, our outcomes indicate that some biochar products can reduce mineralization and solubilization of other sources of C while promoting their physical protection in soil particles.", "keywords": ["2. Zero hunger", "550", "Soil organic carbon", "Stable Isotopes", "04 agricultural and veterinary sciences", "15. Life on land", "630", "6. Clean water", "2311 Waste Management and Disposal", "Biochar", "2305 Environmental Engineering", "Priming", "2304 Environmental Chemistry", "2310 Pollution", "0401 agriculture", " forestry", " and fisheries", "Soil aggregates"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2015.12.107"}, {"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.2015.12.107", "name": "item", "description": "10.1016/j.scitotenv.2015.12.107", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2015.12.107"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-03-01T00:00:00Z"}}, {"id": "10.1021/acs.est.2c03925", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:03Z", "type": "Journal Article", "created": "2022-08-23", "title": "Coexisting Goethite Promotes Fe(II)-Catalyzed Transformation of Ferrihydrite to Goethite", "description": "Open AccessISSN:0013-936X", "keywords": ["Minerals", "template-directed nucleation", "Fe(II)\u2212Fe(III) electron transfer", "recrystallization", "Water", "electron hopping", "Ferric Compounds", "01 natural sciences", "Catalysis", "Soil", "Isotopes", "13. Climate action", "Ferrous Compounds", "labile Fe(III)", "Oxidation-Reduction", "Iron Compounds", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.2c03925"}, {"href": "https://doi.org/10.1021/acs.est.2c03925"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%20%26amp%3B%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1021/acs.est.2c03925", "name": "item", "description": "10.1021/acs.est.2c03925", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.2c03925"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-08-23T00:00:00Z"}}, {"id": "10.1021/acs.est.7b02944", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:03Z", "type": "Journal Article", "created": "2017-10-11", "title": "Novel Multi-isotope Tracer Approach To Test ZnO Nanoparticle and Soluble Zn Bioavailability in Joint Soil Exposures", "description": "Here we use two enriched stable isotopes, 68Znen and 64Znen (>99%), to prepare 68ZnO nanoparticles (NPs) and soluble 64ZnCl2. The standard LUFA 2.2 test soil was dosed with 68ZnO NPs and soluble 64ZnCl2 to 5 mg kg-1 each, plus between 0 and 95 mg kg-1 of soluble ZnCl2 with a natural isotope composition. After 0, 1, 3, 6, and 12 months of soil incubation, earthworms (Eisenia andrei) were introduced for 72 h exposures. Analyses of soils, pore waters, and earthworm tissues using multiple collector inductively coupled plasma mass spectrometry allowed the simultaneous measurement of the diagnostic 68Zn/66Zn, 64Zn/66Zn, and 68Zn/64Zn ratios, from which the three different isotopic forms of Zn were quantified. Eisenia andrei was able to regulate Zn body concentrations with no difference observed between the different total dosing concentrations. The accumulation of labeled Zn by the earthworms showed a direct relationship with the proportion of labeled to total Zn in the pore water, which increased with longer soil incubation times and decreasing soil pH. The 68Znen/64Znen ratios determined for earthworms (1.09 \u00b1 0.04), soils (1.09 \u00b1 0.02), and pore waters (1.08 \u00b1 0.02) indicate indistinguishable environmental distribution and uptake of the Zn forms, most likely due to rapid dissolution of the ZnO NPs.", "keywords": ["104002 Analytische Chemie", "550", "TRANSFORMATIONS", "FATE", "0211 other engineering and technologies", "Biological Availability", "02 engineering and technology", "01 natural sciences", "Soil", "104002 Analytical chemistry", "104023 Umweltchemie", "ENGINEERED NANOMATERIALS", "MD Multidisciplinary", "Animals", "Soil Pollutants", "105906 Environmental geosciences", "210004 Nanomaterials", "Oligochaeta", "EARTHWORM EISENIA-ANDREI", "0105 earth and related environmental sciences", "ENVIRONMENT", "104023 Environmental chemistry", "KNOWLEDGE GAPS", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "6. Clean water", "Zinc", "Nanoparticles", "Zinc Isotopes", "Zinc Oxide", "210004 Nanomaterialien", "Environmental Sciences", "105906 Umweltgeowissenschaften"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.7b02944"}, {"href": "https://doi.org/10.1021/acs.est.7b02944"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%20%26amp%3B%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1021/acs.est.7b02944", "name": "item", "description": "10.1021/acs.est.7b02944", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.7b02944"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-10-26T00:00:00Z"}}, {"id": "10.1023/b:plso.0000020975.75850.ca", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:13Z", "type": "Journal Article", "created": "2004-03-24", "title": "Isotopic Estimates Of New Carbon Inputs Into Litter And Soils In A Four-Year Climate Change Experiment With Douglas-Fir", "description": "Because soil is a major reservoir of terrestrial carbon and a potential sink for atmospheric CO2, determining plant inputs to soil carbon is critical for understanding ecosystem carbon dynamics. We present a modified method to quantify the effects of global climate change on plant inputs of carbon to soil based on 13C:12C ratio (\u03b413C) analyses that accounts for isotopic fractionation between inputs and newly created soil carbon. In a four-year study, the effects of elevated CO2 and temperature were determined for reconstructed Douglas-fir (Pseudotsuga mensiezii (Mirb.) Franco) ecosystems in which native soil of low nitrogen content was used. The \u03b413C patterns in litter and mineral soil horizons were measured and compared to \u03b413C patterns in live needles, fine roots, and coarse roots. From regression analyses, we calculated the isotopic enrichment in 13C of newly incorporated soil carbon relative to needle and root carbon at 4\u2030 and 2\u2030, respectively. These enrichments must be considered when using shifts in soil \u03b413C to calculate inputs of plant carbon into the soil, and are probably a major factor in the progressive enrichment in 13C with increasing depth in soil profiles. Relative to the total carbon in each layer, the proportion of new carbon from recent photosynthate in each soil layer was 13\u201315% in the A horizon, 7\u20139% in litter layers, and 4% in the B2 and C horizons. New carbon in the A horizon was estimated at 370\u00a0g C\u00a0m\u22122. Carbon concentrations and new carbon in A horizons were correlated (r 2=0.78, n=12), but with a slope of 0.356, indicating that about 36% of net carbon accumulation in the A horizon was from inputs via roots, root exudates or mycorrhizal fungi and 64% of carbon was derived from surface litter decomposition. Under the nitrogen-limited growth conditions used in this study, neither elevated CO2 nor temperature affected soil carbon sequestration patterns.", "keywords": ["elevated temperature", "13. Climate action", "soil carbon turnover", "elevated carbon dioxide", "stable isotopes", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "mesocosms", "15. Life on land", "global change", "isotopic discrimination"], "contacts": [{"organization": "Hobbie, Erik A., Johnson, M. G., Rygiewicz, Paul T., Tingey, David T., Olszyk, David M.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1023/b:plso.0000020975.75850.ca"}, {"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.0000020975.75850.ca", "name": "item", "description": "10.1023/b:plso.0000020975.75850.ca", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1023/b:plso.0000020975.75850.ca"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-02-01T00:00:00Z"}}, {"id": "10.1029/2021gc009904", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:16Z", "type": "Journal Article", "created": "2021-10-26", "title": "Quantifying Non\u2010Thermal Silicate Weathering Using Ge/Si and Si Isotopes in Rivers Draining the Yellowstone Plateau Volcanic Field, USA", "description": "Abstract

In active volcanic regions, high\uffe2\uff80\uff90temperature chemical reactions in the hydrothermal system consume CO2 sourced from magma or from the deep crust, whereas reactions with silicates at shallow depths mainly consume atmospheric CO2. Numerous studies have quantified the load of dissolved solids in rivers that drain volcanic regions to determine chemical weathering rates and atmospheric CO2 consumption rates. However, the balance between thermal and non\uffe2\uff80\uff90thermal components to riverine fluxes in these areas remains poorly constrained, hindering accurate estimates of atmospheric CO2 consumption rates. Here we use the Ge/Si ratio and the stable silicon isotopes (\uffce\uffb430Si) as tracers for quantifying non\uffe2\uff80\uff90thermal silicon contributions in rivers draining the Yellowstone Plateau Volcanic Field, USA. The Ge/Si ratio (\uffc2\uffb5mol.mol\uffe2\uff88\uff921) was determined for seven thermal water samples (183\uffc2\uffa0\uffc2\uffb1\uffc2\uffa022), eight rivers (35\uffc2\uffa0\uffc2\uffb1\uffc2\uffa023) and six creeks flowing into Yellowstone Lake (5\uffc2\uffa0\uffc2\uffb1\uffc2\uffa03) during base flow and during peak water discharge following snowmelt. The \uffce\uffb430Si value (\uffe2\uff80\uffb0) was determined for thermal waters (\uffe2\uff88\uff920.09\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.04), Yellowstone River at Yellowstone Lake outlet (1.91\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.23) and creek samples (0.82\uffc2\uffa0\uffc2\uffb1\uffc2\uffa00.29). The calculated atmospheric CO2 consumption associated with non\uffe2\uff80\uff90thermal waters flowing through Yellowstone's rivers during peak discharge is \uffe2\uff88\uffbc3.03 ton.km\uffe2\uff88\uff922.yr\uffe2\uff88\uff921, which is \uffe2\uff88\uffbc2% of the annual mean atmospheric CO2 consumption in other volcanic regions. This study highlights the significance of quantifying seasonal variations in chemical weathering rates for improving estimates of atmospheric CO2 consumption rates in active volcanic regions.Soil microorganisms act as gatekeepers for soil\uffe2\uff80\uff93atmosphere carbon exchange by balancing the accumulation and release of soil organic matter. However, poor understanding of the mechanisms responsible hinders the development of effective land management strategies to enhance soil carbon storage. Here we empirically test the link between microbial ecophysiological traits and topsoil carbon content across geographically distributed soils and land use contrasts. We discovered distinct pH controls on microbial mechanisms of carbon accumulation. Land use intensification in low-pH soils that increased the pH above a threshold (~6.2) leads to carbon loss through increased decomposition, following alleviation of acid retardation of microbial growth. However, loss of carbon with intensification in near-neutral pH soils was linked to decreased microbial biomass and reduced growth efficiency that was, in turn, related to trade-offs with stress alleviation and resource acquisition. Thus, less-intensive management practices in near-neutral pH soils have more potential for carbon storage through increased microbial growth efficiency, whereas in acidic soils, microbial growth is a bigger constraint on decomposition rates.Magnesium is the metal at the center of all types of chlorophyll and is thus crucial to photosynthesis. When an element is involved in a biosynthetic pathway its isotopes are fractionated based on the difference of vibrational frequency between the different molecules. With the technical advance of multi-collectors plasma-mass-spectrometry and improvement in analytical precision, it has recently been found that two types of chlorophylls (a and b) are isotopically distinct. These results have very significant implications with regards to the use of Mg isotopes to understand the biosynthesis of chlorophyll. Here we present theoretical constraints on the origin of these isotopic fractionations through ab initio calculations. We present the fractionation factor for chlorphyll a, b, d, and f. We show that the natural isotopic variations among chlorophyll a and b are well explained by isotopic fractionation under equilibrium, which implies exchanges of Mg during the chlorophyll cycle. We predict that chlorophyll d and f should be isotopically fractionated compared to chlorophyll a and that this could be used in the future to understand the biosynthesis of these molecules.

", "keywords": ["Chlorophyll", "0301 basic medicine", "0303 health sciences", "RELEVANT", "Molecular Structure", "PHOTOSYNTHESIS", "Science", "Q", "POTENTIALS", "R", "Chemical Fractionation", "Fe", "Article", "3. Good health", "[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry", "[CHIM.THEO] Chemical Sciences/Theoretical and/or physical chemistry", "03 medical and health sciences", "Isotopes", "Zn", "Medicine", "PLANTS", "Magnesium", "[SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry", " Molecular Biology/Biochemistry [q-bio.BM]", "GEOCHEMISTRY", "[SDV.BBM.BC] Life Sciences [q-bio]/Biochemistry", " Molecular Biology/Biochemistry [q-bio.BM]"], "contacts": [{"organization": "Fr\u00e9d\u00e9ric Moynier, Fr\u00e9d\u00e9ric Moynier, Toshiyuki Fujii,", "roles": ["creator"]}]}, "links": [{"href": "https://www.nature.com/articles/s41598-017-07305-6.pdf"}, {"href": "https://doi.org/10.1038/s41598-017-07305-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/s41598-017-07305-6", "name": "item", "description": "10.1038/s41598-017-07305-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41598-017-07305-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-08-01T00:00:00Z"}}, {"id": "10.1038/s41598-022-23728-2", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:27Z", "type": "Journal Article", "created": "2022-11-10", "title": "DNA stable isotope probing on soil treated by plant biostimulation and flooding revealed the bacterial communities involved in PCB degradation", "description": "Abstract

Polychlorinated biphenyl (PCB)-contaminated soils represent a major treat for ecosystems health. Plant biostimulation of autochthonous microbial PCB degraders is a way to restore polluted sites where traditional remediation techniques are not sustainable, though its success requires the understanding of site-specific plant\uffe2\uff80\uff93microbe interactions. In an historical PCB contaminated soil, we applied DNA stable isotope probing (SIP) using 13C-labeled 4-chlorobiphenyl (4-CB) and 16S rRNA MiSeq amplicon sequencing to determine how the structure of total and PCB-degrading bacterial populations were affected by different treatments: biostimulation with Phalaris arundinacea subjected (PhalRed) or not (Phal) to a redox cycle and the non-planted controls (Bulk and BulkRed). Phal soils hosted the most diverse community and plant biostimulation induced an enrichment of Actinobacteria. Mineralization of 4-CB in SIP microcosms varied between 10% in Bulk and 39% in PhalRed soil. The most abundant taxa deriving carbon from PCB were Betaproteobacteria and Actinobacteria. Comamonadaceae was the family most represented in Phal soils, Rhodocyclaceae and Nocardiaceae in non-planted soils. Planted soils subjected to redox cycle enriched PCB degraders affiliated to Pseudonocardiaceae, Micromonosporaceae and Nocardioidaceae. Overall, we demonstrated different responses of soil bacterial taxa to specific rhizoremediation treatments and we provided new insights into the populations active in PCB biodegradation.Quantifying global patterns of terrestrial nitrogen (N) cycling is central to predicting future patterns of primary productivity, carbon sequestration, nutrient fluxes to aquatic systems and climate forcing. With limited direct measures of soil N cycling at the global scale, syntheses of the 15N:14N ratio of soil organic matter across climate gradients provide key insights into understanding global patterns of N cycling. In synthesizing data from over 6000 soil samples, we show strong global relationships among soil N isotopes, mean annual temperature (MAT), mean annual precipitation (MAP) and the concentrations of organic carbon and clay in soil. In both hot ecosystems and dry ecosystems, soil organic matter was more enriched in 15N than in corresponding cold ecosystems or wet ecosystems. Below a MAT of 9.8\uffc2\uffb0C, soil \uffce\uffb415N was invariant with MAT. At the global scale, soil organic C concentrations also declined with increasing MAT and decreasing MAP. After standardizing for variation among mineral soils in soil C and clay concentrations, soil \uffce\uffb415N showed no consistent trends across global climate and latitudinal gradients. Our analyses could place new constraints on interpretations of patterns of ecosystem N cycling and global budgets of gaseous N loss.

", "keywords": ["N-15 Natural-Abundance", "550", "Ecosystem ecology", "TROPICAL FORESTS", "Organic chemistry", "Suelo", "Nitrogen cycle", "01 natural sciences", "Nutrient cycle", "cycle de l'azote", "CARBON", "Agricultural and Biological Sciences", "Soil", "Terrestrial ecosystem", "Isotopes", "https://purl.org/becyt/ford/1.6", "Soil water", "SDG 13 - Climate Action", "N-15 NATURAL-ABUNDANCE", "Climate change", "croisement de donn\u00e9es", "Milieux et Changements globaux", "SDG 15 \u2013 Leben an Land", "Global change", "SDG 15 - Life on Land", "2. Zero hunger", "106022 Mikrobiologie", "Climatic Factors", "Tropical Forests", "Ecology", "Geography", "Nitr\u00f3geno", "Nutrient Cycling", "FRACTIONATION", "Litter Decomposition", "ECOSYSTEM ECOLOGY", "Life Sciences", "ecosystem ecology", "Cycling", "Forestry", "Is\u00f3topos", "Carbon cycle", "04 agricultural and veterinary sciences", "Nitrogen Cycle", "Soil carbon", "6. Clean water", "Organic-Matter", "Earth and Planetary Sciences", "ORGANIC-MATTER", "Chemistry", "PRECIPITATION", "SDG 13 \u2013 Ma\u00dfnahmen zum Klimaschutz", "Physical Sciences", "106022 Microbiology", "carbone du sol", "Stable Isotope Analysis of Groundwater and Precipitation", "Ecosystem Functioning", "570", "STABLE ISOTOPE", "Biogeochemical Cycling of Nutrients in Aquatic Ecosystems", "Stable isotope analysis", "Nitrogen", "[SDE.MCG]Environmental Sciences/Global Changes", "Soil Science", "stable isotope analysis;ecosystem ecology", "Article", "Environmental science", "LITTER DECOMPOSITION", "sol min\u00e9ral", "INORGANIC NITROGEN", "Geochemistry and Petrology", "stable isotope analysis", "Carbono", "Environmental Chemistry", "Factores Clim\u00e1ticos", "https://purl.org/becyt/ford/1", "Biology", "Ecosystem", "0105 earth and related environmental sciences", "Soil science", "Soil organic matter", "Soil Fertility", "climat", "AVAILABILITY", "Nitrogen Dynamics", "15. Life on land", "Carbon", "Inorganic", "NITROGEN", "MODEL", "[SDE.MCG] Environmental Sciences/Global Changes", "13. Climate action", "FOS: Biological sciences", "Environmental Science", "PATTERNS", "0401 agriculture", " forestry", " and fisheries", "Soil Carbon Dynamics and Nutrient Cycling in Ecosystems"]}, "links": [{"href": "https://scholars.unh.edu/context/faculty_pubs/article/1042/viewcontent/srep08280.pdf"}, {"href": "https://edoc.unibas.ch/37215/1/srep08280.pdf"}, {"href": "https://doi.org/10.1038/srep08280"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/srep08280", "name": "item", "description": "10.1038/srep08280", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/srep08280"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-02-06T00:00:00Z"}}, {"id": "10.1038/srep44255", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:29Z", "type": "Journal Article", "created": "2017-03-09", "title": "Calcium isotope fractionation between aqueous compounds relevant to low-temperature geochemistry, biology and medicine", "description": "Abstract

Stable Ca isotopes are fractionated between bones, urine and blood of animals and between soils, roots and leaves of plants by >1000\uffe2\uff80\uff89ppm for the 44Ca/40Ca ratio. These isotopic variations have important implications to understand Ca transport and fluxes in living organisms; however, the mechanisms of isotopic fractionation are unclear. Here we present ab initio calculations for the isotopic fractionation between various aqueous species of Ca and show that this fractionation can be up to 3000\uffe2\uff80\uff89ppm. We show that the Ca isotopic fractionation between soil solutions and plant roots can be explained by the difference of isotopic fractionation between the different first shell hydration degree of Ca2+ and that the isotopic fractionation between roots and leaves is controlled by the precipitation of Ca-oxalates. The isotopic fractionation between blood and urine is due to the complexation of heavy Ca with citrate and oxalates in urine. Calculations are presented for additional Ca species that may be useful to interpret future Ca isotopic measurements.

", "keywords": ["Calcium Isotopes", "Chemical Fractionation", "[SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph]", "FE", "Plant Roots", "01 natural sciences", "Article", "Bone and Bones", "[SDU] Sciences of the Universe [physics]", "Soil", "PHOSPHATE", "Animals", "Humans", "ION", "MONITOR", "0105 earth and related environmental sciences", "ENVIRONMENT", "CA", "PLASMA", "Temperature", "Plants", "6. Clean water", "3. Good health", "Plant Leaves", "MAGNESIUM", "13. Climate action", "OXALATE", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "BONE"], "contacts": [{"organization": "Moynier, Fr\u00e9d\u00e9ric, Fujii, Toshiyuki,", "roles": ["creator"]}]}, "links": [{"href": "https://www.nature.com/articles/srep44255.pdf"}, {"href": "https://doi.org/10.1038/srep44255"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/srep44255", "name": "item", "description": "10.1038/srep44255", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/srep44255"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-03-09T00:00:00Z"}}, {"id": "10.1046/j.1365-2486.1999.00211.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:32Z", "type": "Journal Article", "created": "2003-03-11", "title": "Elevated Co2 And Temperature Impacts On Different Components Of Soil Co2 Efflux In Douglas-Fir Terracosms", "description": "Abstract

Although numerous studies indicate that increasing atmospheric CO2 or temperature stimulate soil CO2 efflux, few data are available on the responses of three major components of soil respiration [i.e. rhizosphere respiration (root and root exudates), litter decomposition, and oxidation of soil organic matter] to different CO2 and temperature conditions. In this study, we applied a dual stable isotope approach to investigate the impact of elevated CO2 and elevated temperature on these components of soil CO2 efflux in Douglas\uffe2\uff80\uff90fir terracosms. We measured both soil CO2 efflux rates and the 13C and 18O isotopic compositions of soil CO2 efflux in 12 sun\uffe2\uff80\uff90lit and environmentally controlled terracosms with 4\uffe2\uff80\uff90year\uffe2\uff80\uff90old Douglas fir seedlings and reconstructed forest soils under two CO2 concentrations (ambient and 200 ppmv above ambient) and two air temperature regimes (ambient and 4 \uffc2\uffb0C above ambient). The stable isotope data were used to estimate the relative contributions of different components to the overall soil CO2 efflux. In most cases, litter decomposition was the dominant component of soil CO2 efflux in this system, followed by rhizosphere respiration and soil organic matter oxidation. Both elevated atmospheric CO2 concentration and elevated temperature stimulated rhizosphere respiration and litter decomposition. The oxidation of soil organic matter was stimulated only by increasing temperature. Release of newly fixed carbon as root respiration was the most responsive to elevated CO2, while soil organic matter decomposition was most responsive to increasing temperature. Although some assumptions associated with this new method need to be further validated, application of this dual\uffe2\uff80\uff90isotope approach can provide new insights into the responses of soil carbon dynamics in forest ecosystems to future climate changes.

", "keywords": ["elevated CO2", "13. Climate action", "stable isotopes", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "forest ecosystem", "15. Life on land", "global warming", "soil respiration"], "contacts": [{"organization": "Guanghui Lin, Guanghui Lin, Mark Johnson, David T. Tingey, James R. Ehleringer, Paul T. Rygiewicz,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1046/j.1365-2486.1999.00211.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1046/j.1365-2486.1999.00211.x", "name": "item", "description": "10.1046/j.1365-2486.1999.00211.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1046/j.1365-2486.1999.00211.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1999-02-01T00:00:00Z"}}, {"id": "10.1056/nejm199703063361004", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:37Z", "type": "Journal Article", "created": "2002-07-27", "title": "Sympathetic Cardioneuropathy in Dysautonomias", "description": "The classification of dysautonomias has been confusing, and the pathophysiology obscure. We examined sympathetic innervation of the heart in patients with acquired, idiopathic dysautonomias using thoracic positron-emission tomography and assessments of the entry rate of the sympathetic neurotransmitter norepinephrine into the cardiac venous drainage (cardiac norepinephrine spillover). We related the laboratory findings to signs of sympathetic neurocirculatory failure (orthostatic hypotension and abnormal blood-pressure responses associated with the Valsalva maneuver), central neural degeneration, and responsiveness to treatment with levodopa-carbidopa (Sinemet).Cardiac scans were obtained after intravenous administration of 6-[18F]fluorodopamine in 26 patients with dysautonomia. Fourteen had sympathetic neurocirculatory failure--three with no signs of central neurodegeneration (pure autonomic failure), two with parkinsonism responsive to treatment with levodopa-carbidopa, and nine with central neurodegeneration unresponsive to treatment with levodopa-carbidopa (the Shy-Drager syndrome). The rates of cardiac norepinephrine spillover were estimated on the basis of concentrations of intravenously infused [3H]norepinephrine during catheterization of the right side of the heart.Patients with pure autonomic failure or parkinsonism and sympathetic neurocirculatory failure had no myocardial 6-[18F]fluorodopamine-derived radioactivity or cardiac norepinephrine spillover, indicating loss of myocardial sympathetic-nerve terminals, whereas patients with the Shy-Drager syndrome had increased levels of 6-[18F]fluorodopamine-derived radioactivity, indicating intact sympathetic terminals and absent nerve traffic. Patients with dysautonomia who did not have sympathetic neurocirculatory failure had normal levels of 6-[18F]fluorodopamine-derived radioactivity in myocardium and normal rates of cardiac norepinephrine spillover.The results of 6-[18F]fluorodopamine positron-emission tomography and neurochemical analyses support a new clinical pathophysiologic classification of dysautonomias, based on the occurrence of sympathetic neurocirculatory failure, signs of central neurodegeneration, and responsiveness to levodopa-carbidopa.", "keywords": ["Adult", "Aged", " 80 and over", "Fluorine Radioisotopes", "Nitrogen Radioisotopes", "Sympathetic Nervous System", "Epinephrine", "Dopamine", "Myocardium", "Shy-Drager Syndrome", "Heart", "Parkinson Disease", "Middle Aged", "3. Good health", "Diagnosis", " Differential", "Levodopa", "Norepinephrine", "Autonomic Nervous System Diseases", "Ammonia", "Parasympathetic Nervous System", "Reference Values", "Coronary Circulation", "Humans", "Aged", "Tomography", " Emission-Computed"], "contacts": [{"organization": "Graeme Eisenhofer, Richard O. Cannon, Irwin J. Kopin, Courtney Holmes, David S. Goldstein,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1056/nejm199703063361004"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/New%20England%20Journal%20of%20Medicine", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1056/nejm199703063361004", "name": "item", "description": "10.1056/nejm199703063361004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1056/nejm199703063361004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1997-01-01T00:00:00Z"}}, {"id": "10.1073/pnas.1613401114", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:44Z", "type": "Journal Article", "created": "2017-01-31", "title": "Siberian Arctic black carbon sources constrained by model and observation", "description": "Significance

A successful mitigation strategy for climate warming agents such as black carbon (BC) requires reliable source information from bottom-up emission inventory data, which can only be verified by observation. We measured BC in one of the fastest-warming and, at the same time, substantially understudied regions on our planet, the northeastern Siberian Arctic. Our observations, compared with an atmospheric transport model, imply that quantification and spatial allocation of emissions at high latitudes, specifically in the Russian Arctic, need improvement by reallocating emissions and significantly shifting source contributions for the transport, domestic, power plant, and gas flaring sectors. This strong shift in reported emissions has potentially considerable implications for climate modeling and BC mitigation efforts. The debate on the onset of plate tectonics in the Earth\uffe2\uff80\uff99s history has partially originated from the controversial criteria of using felsic crust to trace plate tectonics in the past. Here, we demonstrate how Ti isotope ratios can be used as a proxy for the affinity of felsic rocks to plume or island arc settings. Our study shows that, contrary to what was previously assumed, Ti isotopes cannot serve as a direct evidence for plate tectonics from 3.5 billion years ago, and must be combined with other information on SiO 2 contents of crustal rocks to be reliable.

", "keywords": ["Titanium isotopes", "Plume", "Magma differentiation", "magma differentiation", "GE", "550", "plume", "Plate tectonics", "[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics", "DAS", "island arc", "7. Clean energy", "01 natural sciences", "13. Climate action", "plate tectonics", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "Island arc", "titanium isotopes", "GE Environmental Sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://pnas.org/doi/pdf/10.1073/pnas.1809164116"}, {"href": "https://doi.org/10.1073/pnas.1809164116"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20National%20Academy%20of%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1073/pnas.1809164116", "name": "item", "description": "10.1073/pnas.1809164116", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1073/pnas.1809164116"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-03T00:00:00Z"}}, {"id": "10.1073/pnas.1905912116", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:45Z", "type": "Journal Article", "created": "2019-08-06", "title": "Disentangling the role of photosynthesis and stomatal conductance on rising forest water-use efficiency", "description": "

Multiple lines of evidence suggest that plant water-use efficiency (WUE)\uffe2\uff80\uff94the ratio of carbon assimilation to water loss\uffe2\uff80\uff94has increased in recent decades. Although rising atmospheric CO 2 has been proposed as the principal cause, the underlying physiological mechanisms are still being debated, and implications for the global water cycle remain uncertain. Here, we addressed this gap using 30-y tree ring records of carbon and oxygen isotope measurements and basal area increment from 12 species in 8 North American mature temperate forests. Our goal was to separate the contributions of enhanced photosynthesis and reduced stomatal conductance to WUE trends and to assess consistency between multiple commonly used methods for estimating WUE. Our results show that tree ring-derived estimates of increases in WUE are consistent with estimates from atmospheric measurements and predictions based on an optimal balancing of carbon gains and water costs, but are lower than those based on ecosystem-scale flux observations. Although both physiological mechanisms contributed to rising WUE, enhanced photosynthesis was widespread, while reductions in stomatal conductance were modest and restricted to species that experienced moisture limitations. This finding challenges the hypothesis that rising WUE in forests is primarily the result of widespread, CO 2 -induced reductions in stomatal conductance. Extensive release of methane from sediments of the world\uffe2\uff80\uff99s largest continental shelf, the East Siberian Arctic Ocean (ESAO), is one of the few Earth system processes that can cause a net transfer of carbon from land/ocean to the atmosphere and thus amplify global warming on the timescale of this century. An important gap in our current knowledge concerns the contributions of different subsea pools to the observed methane releases. This knowledge is a prerequisite to robust predictions on how these releases will develop in the future. Triple-isotope\uffe2\uff80\uff93based fingerprinting of the origin of the highly elevated ESAO methane levels points to a limited contribution from shallow microbial sources and instead a dominating contribution from a deep thermogenic pool.The depletion of moderately volatile elements in the lunar interior, compared to the Earth\uffe2\uff80\uff99s interior, is accompanied by enrichment in heavy isotopes for most species. This has been explained by vapor loss from the protolunar disk, incomplete accretion of volatiles, or volatile degassing during crystallization of the lunar magma ocean. Importantly, these hypotheses have assumed that volatile depletion and associated isotope fractionations are relevant to the whole Moon. However, our lunar sample collections are biased, as Apollo and Luna samples come from within or around the anomalous Procellarum KREEP Terrane region on the lunar nearside. Here, we propose that these chemical and isotopic features could have resulted from a large-scale impact event on the nearside early in the Moon\uffe2\uff80\uff99s history.

", "keywords": ["UAT:1692", "[SDU] Sciences of the Universe [physics]", "lunar samples", "13. Climate action", "stable isotopes", "Lunar volatiles; the Moon; Procellarum KREEP Terrane; Lunar samples; Stable isotopes", "lunar volatiles", "Procellarum KREEP Terrane", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://pnas.org/doi/pdf/10.1073/pnas.2023023118"}, {"href": "https://doi.org/10.1073/pnas.2023023118"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20National%20Academy%20of%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1073/pnas.2023023118", "name": "item", "description": "10.1073/pnas.2023023118", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1073/pnas.2023023118"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-03-15T00:00:00Z"}}, {"id": "10.1088/1748-9326/ac4f8d", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:18:59Z", "type": "Journal Article", "created": "2022-01-27", "title": "Seasonal variability in particulate organic carbon degradation in the Kolyma River, Siberia", "description": "Abstract

Major Arctic rivers are undergoing changes due to climate warming with higher discharge and increased amounts of solutes and organic carbon (OC) draining into rivers and coastal seas. Permafrost thaw mobilizes previously frozen OC to the fluvial network where it can be degraded into greenhouse gases and emitted to the atmosphere. Degradation of OC during downstream transport, especially of the particulate OC (POC), is however poorly characterized. Here, we quantified POC degradation in the Kolyma River, the largest river system underlain with continuous permafrost, during 9\uffe2\uff80\uff9315 d whole-water incubations (containing POC and dissolved OC\uffe2\uff80\uff94DOC) during two seasons: spring freshet (early June) and late summer (end of July). Furthermore, we examined interactions between dissolved and particulate phases using parallel incubations of filtered water (only DOC). We measured OC concentrations and carbon isotopes (\uffce\uffb413C, \uffce\uff9414C) to define carbon losses and to characterize OC composition, respectively. We found that both POC composition and biodegradability differs greatly between seasons. During summer, POC was predominantly autochthonous (47%\uffe2\uff80\uff9395%) and degraded rapidly (\uffe2\uff88\uffbc33% loss) whereas freshet POC was largely of allochthonous origin (77%\uffe2\uff80\uff9396%) and less degradable. Gains in POC concentrations (up to 31%) were observed in freshet waters that could be attributed to flocculation and adsorption of DOC to particles. The demonstrated DOC flocculation and adsorption to POC indicates that the fate and dynamics of the substantially-sized DOC pool may shift from degradation to settling, depending on season and POC concentrations\uffe2\uff80\uff94the latter potentially acting to attenuate greenhouse gas emissions from fluvial systems. We finally note that DOC incubations without POC present may yield degradation estimates that do not reflect degradation in the in situ river conditions, and that interaction between dissolved and particulate phases may be important to consider when determining fluvial carbon dynamics and feedbacks under a changing climate.Global soil nitrogen (N) cycling remains poorly understood due to its complex driving mechanisms. Here, we present a comprehensive analysis of global soil \uffce\uffb415N, a stable isotopic signature indicative of the N input\uffe2\uff80\uff93output balance, using a machine\uffe2\uff80\uff90learning approach on 10,676 observations from 2670 sites. Our findings reveal prevalent joint effects of climatic conditions, plant N\uffe2\uff80\uff90use strategies, soil properties, and other natural and anthropogenic forcings on global soil \uffce\uffb415N. The joint effects of multiple drivers govern the latitudinal distribution of soil \uffce\uffb415N, with more rapid N cycling at lower latitudes than at higher latitudes. In contrast to previous climate\uffe2\uff80\uff90focused models, our data\uffe2\uff80\uff90driven model more accurately simulates spatial changes in global soil \uffce\uffb415N, highlighting the need to consider the joint effects of multiple drivers to estimate the Earth's N budget. These insights contribute to the reconciliation of discordances among empirical, theoretical, and modeling studies on soil N cycling, as well as sustainable N management.Gypsum drylands are widespread worldwide. In these arid ecosystems, the ability of different species to access different water sources during drought is a key determining factor of the composition of plant communities. Gypsum crystallization water could be a relevant source of water for shallow-rooted plants, but the segregation in the use of this source of water among plants remains unexplored. We analysed the principal water sources used by 20 species living in a gypsum hilltop, the effect of rooting depth and gypsum affinity, and the interaction of the plants with the soil beneath them.

Methods

We characterized the water stable isotope composition, \uffce\uffb4\uffe2\uff80\uff8a2H and \uffce\uffb4\uffe2\uff80\uff8a18O, of plant xylem water and related it to the free and gypsum crystallization water extracted from different depths throughout the soil profile and the groundwater, in both spring and summer. Bayesian isotope mixing models were used to estimate the contribution of water sources to plant xylem sap.

Key Results

In spring, all species used free water from the top soil as the main source. In summer, there was segregation in water sources used by different species depending on their rooting depth, but not on their gypsum affinity. Gypsum crystallization water was the main source for most shallow-rooted species, whereas free water from 50 to 100 cm depth was the main source for deep-rooted species. We detected plant\uffe2\uff80\uff93soil interactions in spring, and indirect evidence of possible hydraulic lift by deep-rooted species in summer.

Conclusions

Plants coexisting in gypsum communities segregate their hydrological niches according to their rooting depth. Crystallization water of gypsum represents an unaccounted for, vital source for most of the shallow-rooted species growing on gypsum drylands. Thus, crystallization water helps shallow-rooted species to endure arid conditions, which eventually accounts for the maintenance of high biodiversity in these specialized ecosystems. Glacial environments play an important role in high-latitude marine nutrient cycling, potentially contributing significant fluxes of silicon (Si) to the polar oceans, either as dissolved silicon (DSi) or as dissolvable amorphous silica (ASi). Silicon is a key nutrient in promoting marine primary productivity, contributing to atmospheric CO 2 removal. We present the current understanding of Si cycling in glacial systems, focusing on the Si isotope (\uffce\uffb4 30 Si) composition of glacial meltwaters. We combine existing glacial \uffce\uffb4 30 Si data with new measurements from 20 sub-Arctic glaciers, showing that glacial meltwaters consistently export isotopically light DSi compared with non-glacial rivers (+0.16\uffe2\uff80\uffb0 versus +1.38\uffe2\uff80\uffb0). Glacial \uffce\uffb4 30 Si ASi composition ranges from \uffe2\uff88\uff920.05\uffe2\uff80\uffb0 to \uffe2\uff88\uff920.86\uffe2\uff80\uffb0 but exhibits low seasonal variability. Silicon fluxes and \uffce\uffb4 30 Si composition from glacial systems are not commonly included in global Si budgets and isotopic mass balance calculations at present. We discuss outstanding questions, including the formation mechanism of ASi and the export of glacial nutrients from fjords. Finally, we provide a contextual framework for the recent advances in our understanding of subglacial Si cycling and highlight critical research avenues for assessing potential future changes in these environments. Investigating active participants in the fixation of dinitrogen gas is vital as N is often a limiting factor for primary production. Biological nitrogen fixation is performed by a diverse guild of bacteria and archaea (diazotrophs), which can be free\uffe2\uff80\uff90living or symbionts. Free\uffe2\uff80\uff90living diazotrophs are widely distributed in the environment, yet our knowledge about their identity and ecophysiology is still limited. A major challenge in investigating this guild is inferring activity from genetic data as this process is highly regulated. To address this challenge, we evaluated and improved several 15N\uffe2\uff80\uff90based methods for detecting N2 fixation activity (with a focus on soil samples) and studying active diazotrophs. We compared the acetylene reduction assay and the 15N2 tracer method and demonstrated that the latter is more sensitive in samples with low activity. Additionally, tracing 15N into microbial RNA provides much higher sensitivity compared to bulk soil analysis. Active soil diazotrophs were identified with a 15N\uffe2\uff80\uff90RNA\uffe2\uff80\uff90SIP approach optimized for environmental samples and benchmarked to 15N\uffe2\uff80\uff90DNA\uffe2\uff80\uff90SIP. Lastly, we investigated the feasibility of using SIP\uffe2\uff80\uff90Raman microspectroscopy for detecting 15N\uffe2\uff80\uff90labelled cells. Taken together, these tools allow identifying and investigating active free\uffe2\uff80\uff90living diazotrophs in a highly sensitive manner in diverse environments, from bulk to the single\uffe2\uff80\uff90cell level.Atmospheric carbon dioxide (CO2) and reactive nitrogen (N) concentrations have been increasing due to human activities and impact the global carbon (C) cycle by affecting plant photosynthesis and decomposition processes in soil. Large amounts of C are stored in plants and soils, but the mechanisms behind the stabilization of plant\uffe2\uff80\uff90 and microbial\uffe2\uff80\uff90derived organic matter (OM) in soils are still under debate and it is not clear how N deposition affects soil OM dynamics. Here, we studied the effects of 4\uffc2\uffa0years of elevated (13C\uffe2\uff80\uff90depleted) CO2 and N deposition in forest ecosystems established in open\uffe2\uff80\uff90top chambers on composition and turnover of fatty acids (FAs) in plants and soils. FAs served as biomarkers for plant\uffe2\uff80\uff90 and microbial\uffe2\uff80\uff90derived OM in soil density fractions. We analyzed above\uffe2\uff80\uff90 and belowground plant biomass of beech and spruce trees as well as soil density fractions for the total organic C and FA molecular and isotope (\uffce\uffb413C) composition. FAs did not accumulate relative to total organic C in fine mineral fractions, showing that FAs are not effectively stabilized by association with soil minerals. The \uffce\uffb413C values of FAs in plant biomass increased under high N deposition. However, the N effect was only apparent under elevated CO2 suggesting a N limitation of the system. In soil fractions, only isotope compositions of short\uffe2\uff80\uff90chain FAs (C16+18) were affected. Fractions of \uffe2\uff80\uff98new\uffe2\uff80\uff99 (experimental\uffe2\uff80\uff90derived) FAs were calculated using isotope depletion in elevated CO2 plots and decreased from free light to fine mineral fractions. \uffe2\uff80\uff98New\uffe2\uff80\uff99 FAs were higher in short\uffe2\uff80\uff90chain compared to long\uffe2\uff80\uff90chain FAs (C20\uffe2\uff88\uff9230), indicating a faster turnover of short\uffe2\uff80\uff90chain compared to long\uffe2\uff80\uff90chain FAs. Increased N deposition did not significantly affect the quantity of \uffe2\uff80\uff98new\uffe2\uff80\uff99 FAs in soil fractions, but showed a tendency of increased amounts of \uffe2\uff80\uff98old\uffe2\uff80\uff99 (pre\uffe2\uff80\uff90experimental) C suggesting that decomposition of \uffe2\uff80\uff98old\uffe2\uff80\uff99 C is retarded by high N inputs.

", "keywords": ["UFSP13-8 Global Change and Biodiversity", "2306 Global and Planetary Change", "Chemical Fractionation", "Forests", "2300 General Environmental Science", "Soil", "Fagus", "Environmental Chemistry", "Biomass", "Photosynthesis", "Picea", "General Environmental Science", "2. Zero hunger", "Global and Planetary Change", "Analysis of Variance", "Carbon Isotopes", "Ecology", "Atmosphere", "Fatty Acids", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Reactive Nitrogen Species", "13. Climate action", "2304 Environmental Chemistry", "570 Life sciences; biology", "0401 agriculture", " forestry", " and fisheries", "2303 Ecology"]}, "links": [{"href": "https://doi.org/10.1111/gcb.12666"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.12666", "name": "item", "description": "10.1111/gcb.12666", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.12666"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-07-08T00:00:00Z"}}, {"id": "10.1111/gcb.13752", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:19:21Z", "type": "Journal Article", "created": "2017-05-08", "title": "Faster turnover of new soil carbon inputs under increased atmospheric CO2", "description": "Abstract

Rising levels of atmospheric CO2 frequently stimulate plant inputs to soil, but the consequences of these changes for soil carbon (C) dynamics are poorly understood. Plant\uffe2\uff80\uff90derived inputs can accumulate in the soil and become part of the soil C pool (\uffe2\uff80\uff9cnew soil C\uffe2\uff80\uff9d), or accelerate losses of pre\uffe2\uff80\uff90existing (\uffe2\uff80\uff9cold\uffe2\uff80\uff9d) soil C. The dynamics of the new and old pools will likely differ and alter the long\uffe2\uff80\uff90term fate of soil C, but these separate pools, which can be distinguished through isotopic labeling, have not been considered in past syntheses. Using meta\uffe2\uff80\uff90analysis, we found that while elevated CO2 (ranging from 550 to 800 parts per million by volume) stimulates the accumulation of new soil C in the short term (<1\uffc2\uffa0year), these effects do not persist in the longer term (1\uffe2\uff80\uff934\uffc2\uffa0years). Elevated CO2 does not affect the decomposition or the size of the old soil C pool over either temporal scale. Our results are inconsistent with predictions of conventional soil C models and suggest that elevated CO2 might increase turnover rates of new soil C. Because increased turnover rates of new soil C limit the potential for additional soil C sequestration, the capacity of land ecosystems to slow the rise in atmospheric CO2 concentrations may be smaller than previously assumed.

", "keywords": ["roots", "0106 biological sciences", "570", "550", "soil respiration", "01 natural sciences", "Carbon Cycle", "Soil", "atmospheric carbon dioxide", "XXXXXX - Unknown", "soil carbon", "soils", "isotopes", "Ecosystem", "0105 earth and related environmental sciences", "2. Zero hunger", "carbon", "turnover", "04 agricultural and veterinary sciences", "Carbon Dioxide", "Plants", "15. Life on land", "Carbon", "meta-analysis", "roots (botany)", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "respiration"]}, "links": [{"href": "https://doi.org/10.1111/gcb.13752"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.13752", "name": "item", "description": "10.1111/gcb.13752", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.13752"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-06-02T00:00:00Z"}}, {"id": "10.1111/pce.14124", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:19:46Z", "type": "Journal Article", "created": "2021-06-07", "title": "The size and the age of the metabolically active carbon in tree roots.", "description": "Abstract

Little is known about the sources and age of C respired by tree roots. Previous research in stems identified two functional pools of non\uffe2\uff80\uff90structural carbohydrates (NSC): an \uffe2\uff80\uff9cactive\uffe2\uff80\uff9d pool supplied directly from canopy photo\uffe2\uff80\uff90assimilates supporting metabolism and a \uffe2\uff80\uff9cstored\uffe2\uff80\uff9d pool used when fresh C supplies are limited. We compared the C isotope composition of water\uffe2\uff80\uff90soluble NSC and respired CO2for aspen roots (Populus tremulahybrids) cut off from fresh C supply after stem\uffe2\uff80\uff90girdling or prolonged incubation of excised roots. We used bomb radiocarbon to estimate the time elapsed since C fixation for respired CO2, water\uffe2\uff80\uff90soluble NSC and structural \uffce\uffb1\uffe2\uff80\uff90cellulose. While freshly excised roots (mostly <2.9\uffe2\uff80\uff89mm in diameter) respired CO2fixed <1\uffc2\uffa0year previously, the age increased to 1.6\uffe2\uff80\uff932.9\uffc2\uffa0year within a week after root excision. Freshly excised roots from trees girdled ~3\uffc2\uffa0months ago had respiration rates and NSC stocks similar to un\uffe2\uff80\uff90girdled trees but respired older C (~1.2\uffc2\uffa0year). We estimate that over 3\uffc2\uffa0months NSC in girdled roots must be replaced 5\uffe2\uff80\uff937 times by reserves remobilized from root\uffe2\uff80\uff90external sources. Using a mixing model and observed correlations between \uffce\uff9414C of water\uffe2\uff80\uff90soluble C and \uffce\uffb1\uffe2\uff80\uff90cellulose, we estimate ~30% of C is \uffe2\uff80\uff9cactive\uffe2\uff80\uff9d (~5\uffc2\uffa0mg C g\uffe2\uff88\uff921).

", "keywords": ["0106 biological sciences", "Carbon Isotopes", "Carbon Dioxide", "Forests", "15. Life on land", "Plant Roots", "01 natural sciences", "Carbon", "Trees", "Populus", "Germany", "Carbohydrate Metabolism", "Carbon Radioisotopes", "Cellulose"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/pce.14124"}, {"href": "https://doi.org/10.1111/pce.14124"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%2C%20Cell%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/pce.14124", "name": "item", "description": "10.1111/pce.14124", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/pce.14124"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-04-09T00:00:00Z"}}, {"id": "10.1126/sciadv.aar3599", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:19:48Z", "type": "Journal Article", "created": "2018-09-12", "title": "Nitrogen isotope signature evidences ammonium deprotonation as a common transport mechanism for the AMT-Mep-Rh protein superfamily", "description": "

Natural nitrogen isotopic signature reveals deprotonation during ammonium transport across living organisms.

", "keywords": ["0301 basic medicine", "570", "Potassium Channels", "Saccharomyces cerevisiae Proteins", "Nitrogen", "Ammonium deprotonation", "Saccharomyces cerevisiae", "Biochemistry", "630", "03 medical and health sciences", "Ammonia", "Ammonium Compounds", "Cation Transport Proteins", "Research Articles", "Plant Proteins", "AMT-Mep-Rh membrane proteins", "0303 health sciences", "Ion Transport", "Nitrogen Isotopes", "Arabidopsis Proteins", "Sciences bio-m\u00e9dicales et agricoles", "AMT-Mep-Rh proteins", "Hydrogen-Ion Concentration", "3. Good health", "Ammonium transport", "N isotope fractionation", "PH control", "Potassium", "Microorganisms", " Genetically-Modified", "Nitrogen (N)", "Ammonium"]}, "links": [{"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/277241/4/doi_260868.pdf"}, {"href": "https://doi.org/10.1126/sciadv.aar3599"}, {"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.aar3599", "name": "item", "description": "10.1126/sciadv.aar3599", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1126/sciadv.aar3599"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-09-07T00:00:00Z"}}, {"id": "10.1126/sciadv.aas9024", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:19:48Z", "type": "Journal Article", "created": "2018-07-25", "title": "Biodegradation of synthetic polymers in soils: Tracking carbon into CO 2 and microbial biomass", "description": "

Stable isotope labeling of agricultural polyesters enables demonstration of their microbial utilization in soils.

", "keywords": ["0301 basic medicine", "Polymers", "Polyesters", "Spectrometry", " Mass", " Secondary Ion", "ENZYMATIC-HYDROLYSIS", "CATERPILLARS", "ECOLOGY", "7. Clean energy", "03 medical and health sciences", "Biomass", "SDG 2 \u2013 Kein Hunger", "SDG 2 - Zero Hunger", "POLYESTERS", "Research Articles", "Soil Microbiology", "2. Zero hunger", "106022 Mikrobiologie", "Carbon Isotopes", "0303 health sciences", "Fungi", "Agriculture", "Lipase", "Carbon Dioxide", "Carbon", "COPOLYESTERS", "Biodegradation", " Environmental", "13. Climate action", "106022 Microbiology", "POLYETHYLENE BIO-DEGRADATION"]}, "links": [{"href": "https://doi.org/10.1126/sciadv.aas9024"}, {"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.aas9024", "name": "item", "description": "10.1126/sciadv.aas9024", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1126/sciadv.aas9024"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-07-06T00:00:00Z"}}, {"id": "10.1111/j.1469-8137.2010.03613.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:19:37Z", "type": "Journal Article", "created": "2011-01-19", "title": "Drought Alters Carbon Fluxes In Alpine Snowbed Ecosystems Through Contrasting Impacts On Graminoids And Forbs", "description": "\u2022 Climate change is predicted to increase the frequency of drought events in alpine ecosystems with the potential to affect carbon turnover. \u2022 We removed intact turfs from a Nardus stricta alpine snowbed community and subjected half of them to two drought events of 8 d duration under controlled conditions. Leachate dissolved organic carbon (DOC) was measured throughout the 6 wk study period, and a (13)CO(2) pulse enabled quantification of fluxes of recent assimilate into shoots, roots and leachate and ecosystem CO(2) exchange. \u2022 The amount of DOC in leachate from droughted cores was 62% less than in controls. Drought reduced graminoid biomass, increased forb biomass, had no effect on bryophytes, and led to an overall decrease in total above-ground biomass compared with controls. Net CO(2) exchange, gross photosynthesis and the amount of (13)CO(2) fixed were all significantly less in droughted turfs. These turfs also retained proportionally more (13)C in shoots, allocated less (13)C to roots, and the amount of dissolved organic (13)C recovered in leachate was 57% less than in controls. \u2022 Our data show that drought events can have significant impacts on ecosystem carbon fluxes, and that the principal mechanism behind this is probably changes in the relative abundance of forbs and grasses.", "keywords": ["0106 biological sciences", "leachate", "Carbon Isotopes", "Nardus stricta", "04 agricultural and veterinary sciences", "Plants", "15. Life on land", "net CO2 exchange", "dissolved organic carbon", "01 natural sciences", "plant diversity", "Carbon", "6. Clean water", "Droughts", "climate change", "13. Climate action", "Snow", "13CO(2)", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Organic Chemicals", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1111/j.1469-8137.2010.03613.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": "10.1111/j.1469-8137.2010.03613.x", "name": "item", "description": "10.1111/j.1469-8137.2010.03613.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1469-8137.2010.03613.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-01-19T00:00:00Z"}}, {"id": "10.1111/j.1469-8137.2010.03293.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:19:37Z", "type": "Journal Article", "created": "2010-05-10", "title": "Contrasting Effects Of Elevated Co2 And Warming On Nitrogen Cycling In A Semiarid Grassland", "description": "*Simulation models indicate that the nitrogen (N) cycle plays a key role in how other ecosystem processes such as plant productivity and carbon (C) sequestration respond to elevated CO(2) and warming. However, combined effects of elevated CO(2) and warming on N cycling have rarely been tested in the field. *Here, we studied N cycling under ambient and elevated CO(2) concentrations (600 micromol mol(-1)), and ambient and elevated temperature (1.5 : 3.0 degrees C warmer day:night) in a full factorial semiarid grassland field experiment in Wyoming, USA. We measured soil inorganic N, plant and microbial N pool sizes and NO(3)(-) uptake (using a (15)N tracer). *Soil inorganic N significantly decreased under elevated CO(2), probably because of increased microbial N immobilization, while soil inorganic N and plant N pool sizes significantly increased with warming, probably because of increased N supply. We observed no CO(2 )x warming interaction effects on soil inorganic N, N pool sizes or NO(3)(-) uptake in plants and microbes. *Our results indicate a more closed N cycle under elevated CO(2) and a more open N cycle with warming, which could affect long-term N retention, plant productivity, and C sequestration in this semiarid grassland.", "keywords": ["580", "2. Zero hunger", "Bacteria", "Nitrogen Isotopes", "Nitrogen", "Temperature", "Water", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Poaceae", "Global Warming", "Plant Roots", "Soil", "13. Climate action", "Isotope Labeling", "XXXXXX - Unknown", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Desert Climate", "Plant Shoots"]}, "links": [{"href": "https://doi.org/10.1111/j.1469-8137.2010.03293.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": "10.1111/j.1469-8137.2010.03293.x", "name": "item", "description": "10.1111/j.1469-8137.2010.03293.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1469-8137.2010.03293.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-05-10T00:00:00Z"}}, {"id": "10.1111/maps.12922", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:19:43Z", "type": "Journal Article", "created": "2017-07-27", "title": "Implications for behavior of volatile elements during impacts-Zinc and copper systematics in sediments from the Ries impact structure and central European tektites", "description": "Abstract

Moldavites are tektites genetically related to the Ries impact structure, located in Central Europe, but the source materials and the processes related to the chemical fractionation of moldavites are not fully constrained. To further understand moldavite genesis, the Cu and Zn abundances and isotope compositions were measured in a suite of tektites from four different substrewn fields (South Bohemia, Moravia, Cheb Basin, Lusatia) and chemically diverse sediments from the surroundings of the Ries impact structure. Moldavites are slightly depleted in Zn (~10\uffe2\uff80\uff9320%) and distinctly depleted in Cu (>90%) relative to supposed sedimentary precursors. Moreover, the moldavites show a wide range in \uffce\uffb466Zn values between 1.7 and 3.7\uffe2\uff80\uffb0 (relative to JMC 3\uffe2\uff80\uff900749 Lyon) and \uffce\uffb465Cu values between 1.6 and 12.5\uffe2\uff80\uffb0 (relative to NIST SRM 976) and are thus enriched in heavy isotopes relative to their possible parent sedimentary sources (\uffce\uffb466Zn\uffc2\uffa0=\uffc2\uffa0\uffe2\uff88\uff920.07 to +0.64\uffe2\uff80\uffb0; \uffce\uffb465Cu\uffc2\uffa0=\uffc2\uffa0\uffe2\uff88\uff920.4 to +0.7\uffe2\uff80\uffb0). In particular, the Cheb Basin moldavites show some of the highest \uffce\uffb465Cu values (up to 12.5\uffe2\uff80\uffb0) ever observed in natural samples. The relative magnitude of isotope fractionation for Cu and Zn seen here is opposite to oxygen\uffe2\uff80\uff90poor environments such as the Moon where Zn is significantly more isotopically fractionated than Cu. One possibility is that monovalent Cu diffuses faster than divalent Zn in the reduced melt and diffusion will not affect the extent of Zn isotope fractionation. These observations imply that the capability of forming a redox environment may aid in volatilizing some elements, accompanied by isotope fractionation, during the impact process. The greater extent of elemental depletion, coupled with isotope fractionation of more refractory Cu relative to Zn, may also hinge on the presence of carbonyl species of transition metals and electromagnetic charge, which could exist in the impact\uffe2\uff80\uff90induced high\uffe2\uff80\uff90velocity jet of vapor and melts.

", "keywords": ["550", "GRANITES", "NDAS", "Ries crater", "01 natural sciences", "Tektites", "ZINC", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "QE", "14. Life underwater", "STABLE-ISOTOPE GEOCHEMISTRY", "QC", "0105 earth and related environmental sciences", "Copper isotopes", "ORIGIN", "AUSTRALASIAN TEKTITES", "FRACTIONATION", "IRON", "500", "LACHLAN FOLD BELT", "Ries area sediments", "QE Geology", "Impact", "QC Physics", "13. Climate action", "Volatile loss", "ZN", "Isotope fractionation", "Zinc isotopes", "CU"]}, "links": [{"href": "http://onlinelibrary.wiley.com/wol1/doi/10.1111/maps.12922/fullpdf"}, {"href": "https://doi.org/10.1111/maps.12922"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Meteoritics%20%26amp%3B%20Planetary%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/maps.12922", "name": "item", "description": "10.1111/maps.12922", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/maps.12922"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-07-27T00:00:00Z"}}, {"id": "10.1111/nph.12569", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:19:44Z", "type": "Journal Article", "created": "2013-10-31", "title": "Experimental Drought Reduces The Transfer Of Recently Fixed Plant Carbon To Soil Microbes And Alters The Bacterial Community Composition In A Mountain Meadow", "description": "Summary

Drought affects plants and soil microorganisms, but it is still not clear how it alters the carbon (C) transfer at the plant\uffe2\uff80\uff93microbial interface. Here, we tested direct and indirect effects of drought on soil microbes and microbial turnover of recent plant\uffe2\uff80\uff90derived C in a mountain meadow.

Microbial community composition was assessed using phospholipid fatty acids (PLFAs); the allocation of recent plant\uffe2\uff80\uff90derived C to microbial groups was analysed by pulse\uffe2\uff80\uff90labelling of canopy sections with 13CO2 and the subsequent tracing of the label into microbial PLFAs.

Microbial biomass was significantly higher in plots exposed to a severe experimental drought. In addition, drought induced a shift of the microbial community composition, mainly driven by an increase of Gram\uffe2\uff80\uff90positive bacteria. Drought reduced belowground C allocation, but not the transfer of recently plant\uffe2\uff80\uff90assimilated C to fungi, and in particular reduced tracer uptake by bacteria. This was accompanied by an increase of 13C in the extractable organic C pool during drought, which was even more pronounced after plots were mown.

We conclude that drought weakened the link between plant and bacterial, but not fungal, C turnover, and facilitated the growth of potentially slow\uffe2\uff80\uff90growing, drought\uffe2\uff80\uff90adapted soil microbes, such as Gram\uffe2\uff80\uff90positive bacteria.

", "keywords": ["Time Factors", "Nitrogen", "Mowing", "Mountain grassland", "Carbon Cycle", "Microbial community composition", "Soil", "Biomass", "Ecosystem", "Soil Microbiology", "2. Zero hunger", "106022 Mikrobiologie", "Carbon Isotopes", "Drought", "Research", "Microbiota", "Water", "Carbon allocation", "Microclimate", "04 agricultural and veterinary sciences", "15. Life on land", "Carbon", "6. Clean water", "Droughts", "C pulse-labelling", "13. Climate action", "Austria", "Phospholipid fatty acids", "106022 Microbiology", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1111/nph.12569"}, {"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": "10.1111/nph.12569", "name": "item", "description": "10.1111/nph.12569", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/nph.12569"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-10-31T00:00:00Z"}}, {"id": "10.1111/nph.16047", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:19:44Z", "type": "Journal Article", "created": "2019-07-08", "title": "Winter's bite: beech trees survive complete defoliation due to spring late\u2010frost damage by mobilizing old C reserves", "description": "Summary

Late frost can destroy the photosynthetic apparatus of trees. We hypothesized that this can alter the normal cyclic dynamics of C\uffe2\uff80\uff90reserves in the wood.

We measured soluble sugar concentrations and radiocarbon signatures (\uffce\uff9414C) of soluble nonstructural carbon (NSC) in woody tissues sampled from a Mediterranean beech forest that was completely defoliated by an exceptional late frost in 2016. We used the bomb radiocarbon approach to estimate the time elapsed since fixation of mobilized soluble sugars.

During the leafless period after the frost event, soluble sugar concentrations declined sharply while \uffce\uff9414C of NSC increased. This can be explained by the lack of fresh assimilate supply and a mobilization of C from reserve pools. Soluble NSC became increasingly older during the leafless period, with a maximum average age of 5\uffc2\uffa0yr from samples collected 27\uffc2\uffa0d before canopy recovery. Following leaf re\uffe2\uff80\uff90growth, soluble sugar concentrations increased and \uffce\uff9414C of soluble NSC decreased, indicating the allocation of new assimilates to the stem soluble sugars pool.

These data highlight that beech trees rapidly mobilize reserve C to survive strong source\uffe2\uff80\uff93sink imbalances, for example due to late frost, and show that NSC is a key trait for tree resilience under global change.

", "keywords": ["580", "0106 biological sciences", "570", "late-frost leaf damage", "Fagus sylvatica", "bomb-radiocarbon (C-14)", "nonstructural carbon", "bomb-radiocarbon (14C)", "15. Life on land", "01 natural sciences", "Carbon", "Plant Leaves", "Freezing", "Fagus", "extreme weather event", "Carbohydrate Metabolism", "Carbon Radioisotopes", "Seasons", "resilience"]}, "links": [{"href": "https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.16047"}, {"href": "https://doi.org/10.1111/nph.16047"}, {"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": "10.1111/nph.16047", "name": "item", "description": "10.1111/nph.16047", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/nph.16047"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-27T00:00:00Z"}}, {"id": "10.15454/KMNR6R", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:20:17Z", "type": "Dataset", "title": "Depth distribution of soil carbon age inferred from natural 13C labelling meta-analysis", "description": "Depth profiles soil organic carbon turnover estimated by the natural 13C labelling technique. Data have been collected from published articles plus original data (meta-analysis). Dataset contains raw primary data, calculated data and ancillary information analysed and generated during the study: 'Atmosphere-soil carbon transfer as a function of soil depth'", "keywords": ["carbon 13", "Earth and Environmental Science", "Climate", "Agriculture", " Forestry", " Horticulture", " Aquaculture", "stable carbon isotopes", "Biodiversity and Ecology", "carbon cycle", "Silviculture", "Agriculture", " Forestry", " Horticulture", "Soils and soil sciences", "Ecology", "Agricultural Sciences", "Life Sciences", "15. Life on land", "Biospheric Sciences", "meta-analysis", "soil organic carbon", "13. Climate action", "Earth and Environmental Sciences", "Soil Sciences", "Forests and Forest Products", "Agriculture", " Forestry", " Horticulture", " Aquaculture and Veterinary Medicine", "Environmental Research", "Natural Sciences", "Geosciences", "meta analysis"], "contacts": [{"organization": "Balesdent, Jerome, Basile-Doelsch, Isabelle, Chadoeuf, Jo\u00ebl, Cornu, Sophie, Derrien, Delphine, Fekiacova, Zuzana, Hatt\u00e9, Christine,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.15454/KMNR6R"}, {"rel": "self", "type": "application/geo+json", "title": "10.15454/KMNR6R", "name": "item", "description": "10.15454/KMNR6R", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.15454/KMNR6R"}, {"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": "10.1126/science.1113977", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:19:49Z", "type": "Journal Article", "created": "2005-08-25", "title": "Carbon Flux And Growth In Mature Deciduous Forest Trees Exposed To Elevated Co2", "description": "

Whether rising atmospheric carbon dioxide (CO 2 ) concentrations will cause forests to grow faster and store more carbon is an open question. Using free air CO 2 release in combination with a canopy crane, we found an immediate and sustained enhancement of carbon flux through 35-meter-tall temperate forest trees when exposed to elevated CO 2 . However, there was no overall stimulation in stem growth and leaf litter production after 4 years. Photosynthetic capacity was not reduced, leaf chemistry changes were minor, and tree species differed in their responses. Although growing vigorously, these trees did not accrete more biomass carbon in stems in response to elevated CO 2 , thus challenging projections of growth responses derived from tests with smaller trees.

", "keywords": ["Carbon Isotopes", "Plant Stems", "Atmosphere", "Nitrogen", "0211 other engineering and technologies", "0207 environmental engineering", "02 engineering and technology", "Carbon Dioxide", "15. Life on land", "Lignin", "Carbon", "Trees", "Plant Leaves", "Quercus", "Soil", "Betulaceae", "13. Climate action", "Fagus", "Biomass", "Photosynthesis", "Ecosystem", "Plant Shoots", "Switzerland"]}, "links": [{"href": "https://doi.org/10.1126/science.1113977"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1126/science.1113977", "name": "item", "description": "10.1126/science.1113977", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1126/science.1113977"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-08-26T00:00:00Z"}}, {"id": "10.1371/journal.pone.0219479", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:20:10Z", "type": "Journal Article", "created": "2019-07-23", "title": "An integrated assessment of nitrogen source, transformation and fate within an intensive dairy system to inform management change", "description": "From an environmental perspective optimised dairy systems, which follow current regulations, still have low nitrogen (N) use efficiency, high N surplus (kg N ha-1) and enable ad-hoc delivery of direct and indirect reactive N losses to water and the atmosphere. The objective of the present study was to divide an intensive dairy farm into N attenuation capacity areas based on this ad-hoc delivery. Historical and current spatial and temporal multi-level data- sets (stable isotope and dissolved gas) were combined and interpreted. Results showed that the farm had four distinct attenuation areas: high N attenuation: characterised by ammonium-N (NH4+-N) below 0.23 mg NH4+-N l-1 and nitrate (NO3--N) below 5.65 mg NO3-- N l-1 in surface, drainage and groundwater, located on imperfectly to moderately-well drained soils with high denitrification potential and low nitrous oxide (N2O) emissions (av. 0.0032 mg N2O-N l-1); moderate N attenuation: characterised by low NO3--N concentration in drainage water but high N2O production (0.0317 mg N2O-N l-1) and denitrification potential lower than group 1 (av. \u03b415N-NO3-: 16.4 , av. \u03b418O-NO3-: 9.2 ), on well to moderately drained soils; low N attenuation area 1: characterised by high NO3--N (av. 6.90 mg NO3--N l-1) in drainage water from well to moderately-well drained soils, with low denitrification potential (av. \u03b415N-NO3-: 9.5 , av. \u03b418O-NO3-: 5.9 ) and high N2O emissions (0.0319 mg N2O l-1); and low N attenuation area 2: characterised by high NH4+-N (av. 3.93 mg NH4+-N l-1 and high N2O emissions (av. 0.0521 mg N2O l-1) from well to imperfectly drained soil. N loads on site should be moved away from low attenuation areas and emissions to air and water should be assessed.", "keywords": ["dairy systems", "Farms", "Time Factors", "550", "Nitrogen", "Science", "Nitrous Oxide", "management change", "Oxygen Isotopes", "01 natural sciences", "Permeability", "nitrogen", "dissimilatory nitrate reduction to ammonium", "soil", "Dairy system", "Soil", "Isotopes", "Waste Management", "Oxygen Radioisotopes", "Ammonium Compounds", "0105 earth and related environmental sciences", "2. Zero hunger", "Nitrates", "Geography", "Stable Isotopes", "Q", "R", "Water", "Agriculture", "15. Life on land", "nitrification", "6. Clean water", "Management", "DNRA", "Dairying", "Milk", "Slurries", "13. Climate action", "Denitrification", "Medicine", "Intensive", "Research Article"]}, "links": [{"href": "https://eprints.whiterose.ac.uk/148308/8/journal.pone.0219479.pdf"}, {"href": "https://air.unimi.it/bitstream/2434/956826/2/document.pdf"}, {"href": "https://doi.org/10.1371/journal.pone.0219479"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/PLOS%20ONE", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1371/journal.pone.0219479", "name": "item", "description": "10.1371/journal.pone.0219479", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1371/journal.pone.0219479"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-07-23T00:00:00Z"}}, {"id": "10.5194/bg-17-3903-2020", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:22:21Z", "type": "Journal Article", "created": "2020-07-31", "title": "Leaf-scale quantification of the effect of photosynthetic gas exchange on \u0394<sup>17</sup>O of atmospheric CO<sub>2</sub>", "description": "

Abstract. Understanding the processes that affect the triple oxygen isotope composition of atmospheric CO2 during gas exchange can help constrain the interaction and fluxes between the atmosphere and the biosphere. We conducted leaf cuvette experiments under controlled conditions using three plant species. The experiments were conducted at two different light intensities and using CO2 with different \uffce\uff9417O. We directly quantify the effect of photosynthesis on \uffce\uff9417O of atmospheric CO2 for the first time. Our results demonstrate the established theory for \uffce\uffb418O is applicable to \uffce\uff9417O(CO2) at leaf level, and we confirm that the following two key factors determine the effect of photosynthetic gas exchange on the \uffce\uff9417O of atmospheric CO2. The relative difference between \uffce\uff9417O of the CO2 entering the leaf and the CO2 in equilibrium with leaf water and the back-diffusion flux of CO2 from the leaf to the atmosphere, which can be quantified by the cm\uffe2\uff88\uff95ca ratio, where ca is the CO2 mole fraction in the surrounding air and cm is the one at the site of oxygen isotope exchange between CO2 and H2O. At low cm\uffe2\uff88\uff95ca ratios the discrimination is governed mainly by diffusion into the leaf, and at high cm\uffe2\uff88\uff95ca ratios it is governed by back-diffusion of CO2 that has equilibrated with the leaf water. Plants with a higher cm\uffe2\uff88\uff95ca ratio modify the \uffce\uff9417O of atmospheric CO2 more strongly than plants with a lower cm\uffe2\uff88\uff95ca ratio. Based on the leaf cuvette experiments, the global value for discrimination against \uffce\uff9417O of atmospheric CO2 during photosynthetic gas exchange is estimated to be -0.57\uffc2\uffb10.14\uffe2\uff80\uff89\uffe2\uff80\uffb0 using cm\uffe2\uff88\uff95ca values of 0.3 and 0.7 for C4 and C3 plants, respectively. The main uncertainties in this global estimate arise from variation in cm\uffe2\uff88\uff95ca ratios among plants and growth conditions.

", "keywords": ["0106 biological sciences", "0301 basic medicine", "QE1-996.5", "CARBONIC-ANHYDRASE ACTIVITY", "Ecology", "OXYGEN-ISOTOPE FRACTIONATION", "MESOPHYLL CONDUCTANCE", "Geology", "15. Life on land", "01 natural sciences", "O-18/O-16 RATIOS", "MASS-INDEPENDENT FRACTIONATION", "03 medical and health sciences", "HIGH-PRECISION MEASUREMENTS", "Life", "13. Climate action", "3-DIMENSIONAL SYNTHESIS", "QH501-531", "STABLE-ISOTOPES", "Life Science", "14. Life underwater", "TRIPLE OXYGEN", "DIOXIDE", "QH540-549.5", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.5194/bg-17-3903-2020"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeosciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5194/bg-17-3903-2020", "name": "item", "description": "10.5194/bg-17-3903-2020", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/bg-17-3903-2020"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-27T00:00:00Z"}}, {"id": "10.1890/10-2076.1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:20:37Z", "type": "Journal Article", "created": "2011-04-29", "title": "No Evidence That Chronic Nitrogen Additions Increase Photosynthesis In Mature Sugar Maple Forests", "description": "Atmospheric nitrogen (N) deposition can increase forest growth. Because N deposition commonly increases foliar N concentrations, it is thought that this increase in forest growth is a consequence of enhanced leaf-level photosynthesis. However, tests of this mechanism have been infrequent, and increases in photosynthesis have not been consistently observed in mature forests subject to chronic N deposition. In four mature northern hardwood forests in the north-central United States, chronic N additions (30 kg N ha(-1) yr(-1) as NaNO3 for 14 years) have increased aboveground growth but have not affected canopy leaf biomass or leaf area index. In order to understand the mechanism behind the increases in growth, we hypothesized that the NO3(-) additions increased foliar N concentrations and leaf-level photosynthesis in the dominant species in these forests (sugar maple, Acer saccharum). The NO3(-) additions significantly increased foliar N. However, there was no significant difference between the ambient and +NO3(-) treatments in two seasons (2006-2007) of instantaneous measurements of photosynthesis from either canopy towers or excised branches. In measurements on excised branches, photosynthetic nitrogen use efficiency (micromol CO2 s(-1) g(-1) N) was significantly decreased (-13%) by NO3(-) additions. Furthermore, we found no consistent NO3(-) effect across all sites in either current foliage or leaf litter collected annually throughout the study (1993-2007) and analyzed for delta 13C and delta 18O, isotopes that can be used together to integrate changes in photosynthesis over time. We observed a small but significant NO3(-) effect on the average area and mass of individual leaves from the excised branches, but these differences varied by site and were countered by changes in leaf number. These photosynthesis and leaf area data together suggest that NO3(-) additions have not stimulated photosynthesis. There is no evidence that nutrient deficiencies have developed at these sites, so unlike other studies of photosynthesis in N-saturated forests, we cannot attribute the lack of a stimulation of photosynthesis to nutrient limitations. Rather than increases in C assimilation, the observed increases in aboveground growth at our study sites are more likely due to shifts in C allocation.", "keywords": ["0106 biological sciences", "Carbon Isotopes", "Michigan", "Nitrates", "Time Factors", "Nitrogen", "Acer", "04 agricultural and veterinary sciences", "Oxygen Isotopes", "15. Life on land", "01 natural sciences", "Carbon", "Trees", "Oxygen", "Plant Leaves", "0401 agriculture", " forestry", " and fisheries", "Photosynthesis", "Fertilizers"]}, "links": [{"href": "https://doi.org/10.1890/10-2076.1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/10-2076.1", "name": "item", "description": "10.1890/10-2076.1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/10-2076.1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-10-01T00:00:00Z"}}, {"id": "10.18485/znms_arh.2023.26.1.20", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:20:34Z", "type": "Journal Article", "created": "2023-11-26", "title": "A Medieval Burial from the Site of Supska: An Anthropological and Contextual Analysis of the Skeletal Remains from Grave 1", "description": "In 1956, the Institute of Archaeology and the National Museum in Belgrade carried out excavations at the site of Supska, near \u0106uprija, in Central Serbia. Based on the material culture findings, the site is mostly known as a Late Neolithic one; however, archaeological findings from other periods were discovered too. In the 1956 excavations, the cultural layers, and archaeological features with the Vin\u010da culture archaeological materials were examined, as well as one grave, marked as Grave 1. The results of this excavation have been previously published in one monograph; however, an anthropological analysis of the individual found in Grave 1 has not been conducted before. In this paper, we present the results of contextual, bioanthropological, stable isotopes and C14 analyses of human skeletal remains found in Grave 1. The results showed that a young adult, who had experienced nonspecific metabolic stress during childhood, as evidenced by traces of linear enamel hypoplasia and porotic hyperostosis, was buried in this grave. AMS date revealed that this individual lived between 1280\u20131390 cal. AD, while the results of the stable isotope analyses suggested that it had mixed diet based on C4 plants (such as millet) and/or C3 plants, with larger amounts of animal protein, possible deriving from freshwater fish.", "keywords": ["Stable isotope analysis", "burial", "human skeletal remains", "stable isotopes", "Medieval period", "Medieval Burial", "Supska", "AMS dating", "14C AMS Dating"]}, "links": [{"href": "http://dais.sanu.ac.rs/bitstream/id/62730/bitstream_62730.pdf"}, {"href": "https://doi.org/10.18485/znms_arh.2023.26.1.20"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/%D0%97%D0%B1%D0%BE%D1%80%D0%BD%D0%B8%D0%BA%20%D0%9D%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%BE%D0%B3%20%D0%BC%D1%83%D0%B7%D0%B5%D1%98%D0%B0%20%D0%A1%D1%80%D0%B1%D0%B8%D1%98%D0%B5.%20%D0%90%D1%80%D1%85%D0%B5%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%98%D0%B0%20%3D%20Recueil%20du%20Mus%C3%A9e%20national%20de%20Serbie.%20Arch%C3%A9ologie", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.18485/znms_arh.2023.26.1.20", "name": "item", "description": "10.18485/znms_arh.2023.26.1.20", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.18485/znms_arh.2023.26.1.20"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-01-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=isotopes&offset=50&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=isotopes&offset=50&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "prev", "title": "items (prev)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=isotopes&offset=0", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=isotopes&offset=100", "hreflang": "en-US"}], "numberMatched": 193, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-06-25T10:14:38.267835Z"}