{"type": "FeatureCollection", "features": [{"id": "10.1016/j.soilbio.2005.06.023", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:17:18Z", "type": "Journal Article", "created": "2005-07-28", "title": "Effects Of Elevated Co2 Concentration On Rhizodeposition From Lolium Perenne Grown On Soil Exposed To 9 Years Of Co2 Enrichment", "description": "Abstract The effects of enriched CO 2 atmosphere on partitioning of recently assimilated carbon were investigated in a plant-soil-microorganism system in which Lolium perenne seedlings were planted into cores inserted into the resident soil within a sward that had been treated with elevated CO 2 for 9 consecutive years, under two N fertilisation levels (Swiss FACE experiment). The planted cores were excavated from the ambient (35\u00a0Pa pCO 2 ) and enriched (60\u00a0Pa pCO 2 ) rings at two dates, in spring and autumn, during the growing season. The cores were brought back to the laboratory for 14 C labelling of shoots in order to trace the transfer of recently assimilated C both within the plant and to the soil and microbial biomass. At the spring sampling, high N supply stimulated shoot and total dry matter production. Consistently, high N enhanced the allocation of recently fixed C to shoots, and reduced it to belowground compartments. Elevated CO 2 had no consequences for DM or the pattern of C allocation. At the autumn sampling, at high N plot, yield of L. perenne was stimulated by elevated CO 2 . Consistently, 14 C was preferentially allocated aboveground and, consequently belowground recent C allocation was depressed and rhizodeposition reduced. At both experimental periods, total soil C content was similar in all treatments, providing no evidence for soil carbon sequestration in the Swiss Free Air CO 2 Enrichment experiment (FACE) after 9 years of enrichment. Recently assimilated C and soil C were mineralised faster in soils from enriched rings, suggesting a CO 2 -induced shift in the microbial biomass characteristics (structure, diversity, activity) and/or in the quality of the root-released organic compounds.", "keywords": ["580", "RHIZODEPOSITION", "0106 biological sciences", "2. Zero hunger", "RAY GRASS ANGLAIS", "MINERALISATION", "RHIZOSPHERE RESPIRATION", "04 agricultural and veterinary sciences", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "15. Life on land", "01 natural sciences", "MICROBIAL BIOMASSE", "CARBON SEQUESTRATION", "0401 agriculture", " forestry", " and fisheries", "ELEVATED CO2", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "NITROGEN FERTILISATION"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2005.06.023"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2005.06.023", "name": "item", "description": "10.1016/j.soilbio.2005.06.023", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2005.06.023"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-04-01T00:00:00Z"}}, {"id": "10.1007/s00442-007-0750-y", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:14:49Z", "type": "Journal Article", "created": "2007-05-09", "title": "Mangrove Growth In New Zealand Estuaries: The Role Of Nutrient Enrichment At Sites With Contrasting Rates Of Sedimentation", "description": "Mangrove forest coverage is increasing in the estuaries of the North Island of New Zealand, causing changes in estuarine ecosystem structure and function. Sedimentation and associated nutrient enrichment have been proposed to be factors leading to increases in mangrove cover, but the relative importance of each of these factors is unknown. We conducted a fertilization study in estuaries with different sedimentation histories in order to determine the role of nutrient enrichment in stimulating mangrove growth and forest development. We expected that if mangroves were nutrient-limited, nutrient enrichment would lead to increases in mangrove growth and forest structure and that nutrient enrichment of trees in our site with low sedimentation would give rise to trees and sediments that converged in terms of functional characteristics on control sites in our high sedimentation site. The effects of fertilizing with nitrogen (N) varied among sites and across the intertidal zone, with enhancements in growth, photosynthetic carbon gain, N resorption prior to leaf senescence and the leaf area index of canopies being significantly greater at the high sedimentation sites than at the low sedimentation sites, and in landward dwarf trees compared to seaward fringing trees. Sediment respiration (CO(2) efflux) was higher at the high sedimentation site than at the low one sedimentation site, but it was not significantly affected by fertilization, suggesting that the high sedimentation site supported greater bacterial mineralization of sediment carbon. Nutrient enrichment of the coastal zone has a role in facilitating the expansion of mangroves in estuaries of the North Island of New Zealand, but this effect is secondary to that of sedimentation, which increases habitat area and stimulates growth. In estuaries with high sediment loads, enrichment with N will cause greater mangrove growth and further changes in ecosystem function.", "keywords": ["nutrient resorption efficiency", "Whangapoua", "0106 biological sciences", "Geologic Sediments", "Nitrogen", "Performance", "soil respiration", "01 natural sciences", "Rhizophora-mangle", "C1", "Oxygen Consumption", "Plant-growth", "Herbivory", "Photosynthesis", "Deposition", "Ecosystem", "580", "photosynthesis", "Avicenna marina", "Ecology", "leaf area index", "Plant Stems", "Phosphorus", "Soil respiration", "Limitation", "15. Life on land", "Carbon", "Plant Leaves", "Leaf area index", "770400 Coastal and Estuarine Environment", "Nutrient resorption efficiency", "Waikopua", "Avicennia", "Seasons", "270402 Plant Physiology", "New Zealand"]}, "links": [{"href": "https://doi.org/10.1007/s00442-007-0750-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oecologia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00442-007-0750-y", "name": "item", "description": "10.1007/s00442-007-0750-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-007-0750-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-05-10T00:00:00Z"}}, {"id": "10.1007/pl00008869", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:14:39Z", "type": "Journal Article", "created": "2006-04-10", "title": "Combined Effects Of Atmospheric Co2 And N Availability On The Belowground Carbon And Nitrogen Dynamics Of Aspen Mesocosms", "description": "It is uncertain whether elevated atmospheric CO2 will increase C storage in terrestrial ecosystems without concomitant increases in plant access to N. Elevated CO2 may alter microbial activities that regulate soil N availability by changing the amount or composition of organic substrates produced by roots. Our objective was to determine the potential for elevated CO2 to change N availability in an experimental plant-soil system by affecting the acquisition of root-derived C by soil microbes. We grew Populus tremuloides (trembling aspen) cuttings for 2 years under two levels of atmospheric CO2 (36.7 and 71.5 Pa) and at two levels of soil N (210 and 970 \u00b5g N g-1). Ambient and twice-ambient CO2 concentrations were applied using open-top chambers, and soil N availability was manipulated by mixing soils differing in organic N content. From June to October of the second growing season, we measured midday rates of soil respiration. In August, we pulse-labeled plants with 14CO2 and measured soil 14CO2 respiration and the 14C contents of plants, soils, and microorganisms after a 6-day chase period. In conjunction with the August radio-labeling and again in October, we used 15N pool dilution techniques to measure in situ rates of gross N mineralization, N immobilization by microbes, and plant N uptake. At both levels of soil N availability, elevated CO2 significantly increased whole-plant and root biomass, and marginally increased whole-plant N capital. Significant increases in soil respiration were closely linked to increases in root biomass under elevated CO2. CO2 enrichment had no significant effect on the allometric distribution of biomass or 14C among plant components, total 14C allocation belowground, or cumulative (6-day) 14CO2 soil respiration. Elevated CO2 significantly increased microbial 14C contents, indicating greater availability of microbial substrates derived from roots. The near doubling of microbial 14C contents at elevated CO2 was a relatively small quantitative change in the belowground C cycle of our experimental system, but represents an ecologically significant effect on the dynamics of microbial growth. Rates of plant N uptake during both 6-day periods in August and October were significantly greater at elevated CO2, and were closely related to fine-root biomass. Gross N mineralization was not affected by elevated CO2. Despite significantly greater rates of N immobilization under elevated CO2, standing pools of microbial N were not affected by elevated CO2, suggesting that N was cycling through microbes more rapidly. Our results contained elements of both positive and negative feedback hypotheses, and may be most relevant to young, aggrading ecosystems, where soil resources are not yet fully exploited by plant roots. If the turnover of microbial N increases, higher rates of N immobilization may not decrease N availability to plants under elevated CO2.", "keywords": ["0106 biological sciences", "root-: biomass-", "Ecology and Evolutionary Biology", "nitrogen-fixation", "Environmental-Sciences)", "01 natural sciences", "nitrogen", "biomass-", "nitrogen-cycle", "nitrogen-", "Microorganisms-", "carbon-14", "124-38-9: CARBON DIOXIDE", "C Cycle", "Spermatophytes-", "Spermatophyta-", "Key Words Atmospheric CO2", "Cellular and Developmental Biology", "Populus Tremuloides Michx", "2. Zero hunger", "carbon-dioxide: atmospheric-", "plant-nutrition", "Climatology- (Environmental-Sciences)", "Angiosperms-", "Angiospermae-", "Plants-", "Natural Resources and Environment", "04 agricultural and veterinary sciences", "global-climate-change", "microbe- (Microorganisms-)", "7727-37-9: NITROGEN", "chemical-composition", "carbon-sequestration", "mineral-uptake", "soil-biology", "Science", "Vascular-Plants", "poplars-", "respiration-", "carbon-dioxide-enrichment", "carbon-dioxide", "Populus-tremuloides [trembling-aspen] (Salicaceae-)", "carbon-cycle", "Health Sciences", "Salicaceae-: Dicotyledones-", "soil-respiration", "content", "Plantae-", "14762-75-5: CARBON-14", "mineralization-", "Molecular", "forest-soils", "15. Life on land", "Rhizodeposition", "soil-flora", "N Cycle", "13. Climate action", "cuttings-", "roots-", "Legacy", "Terrestrial-Ecology (Ecology-", "0401 agriculture", " forestry", " and fisheries", "Dicots-", "ecosystems-"], "contacts": [{"organization": "Mikan, Carl J., Zak, Donald R., Kubiske, Mark E., Pregitzer, Kurt S.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/pl00008869"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oecologia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/pl00008869", "name": "item", "description": "10.1007/pl00008869", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/pl00008869"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2000-08-23T00:00:00Z"}}, {"id": "10.1007/s10021-005-0085-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:14:52Z", "type": "Journal Article", "created": "2006-03-20", "title": "Microbial Cycling Of C And N In Northern Hardwood Forests Receiving Chronic Atmospheric No3- Deposition", "description": "Sugar maple (Acer saccharum Marsh.)-dominated northern hardwood forests in the upper Lakes States region appear to be particularly sensitive to chronic atmospheric NO 3 \u2212 deposition. Experimental NO 3 \u2212 deposition (3 g NO 3 \u2212 N m\u22122 y\u22121) has significantly reduced soil respiration and increased the export of DOC/DON and NO 3 \u2212 across the region. Here, we evaluate the possibility that diminished microbial activity in mineral soil was responsible for these ecosystem-level responses to NO 3 \u2212 deposition. To test this alternative, we measured microbial biomass, respiration, and N transformations in the mineral soil of four northern hardwood stands that have received 9 years of experimental NO 3 \u2212 deposition. Microbial biomass, microbial respiration, and daily rates of gross and net N transformations were not changed by NO 3 \u2212 deposition. We also observed no effect of NO 3 \u2212 deposition on annual rates of net N mineralization. However, NO 3 \u2212 deposition significantly increased (27%) annual net nitrification, a response that resulted from rapid microbial NO 3 \u2212 assimilation, the subsequent turnover of NH 4 + , and increased substrate availability for this process. Nonetheless, greater rates of net nitrification were insufficient to produce the 10-fold observed increase in NO 3 \u2212 export, suggesting that much of the exported NO 3 \u2212 resulted directly from the NO 3 \u2212 deposition treatment. Results suggest that declines in soil respiration and increases in DOC/DON export cannot be attributed to NO 3 \u2212 -induced physiological changes in mineral soil microbial activity. Given the lack of response we have observed in mineral soil, our results point to the potential importance of microbial communities in forest floor, including both saprotrophs and mycorrhizae, in mediating ecosystem-level responses to chronic NO 3 \u2212 deposition in Lake States northern hardwood forests.", "keywords": ["0106 biological sciences", "Ecology", "Science", "Plant Sciences", "Soil C and N Cycling", "Ecology and Evolutionary Biology", "Life Sciences", "Natural Resources and Environment", "Nature Conservation", "Northern Hardwood Forests", "04 agricultural and veterinary sciences", "15. Life on land", "Microbial Respiration", "Nitrification", "01 natural sciences", "Environmental Management", "N Mineralization", "Geoecology/Natural Processes", "13. Climate action", "Atmospheric NO 3 \u2212 Deposition", "0401 agriculture", " forestry", " and fisheries", "Zoology"]}, "links": [{"href": "https://doi.org/10.1007/s10021-005-0085-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecosystems", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10021-005-0085-7", "name": "item", "description": "10.1007/s10021-005-0085-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10021-005-0085-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-03-01T00:00:00Z"}}, {"id": "10.1007/s10342-008-0203-0", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:14:56Z", "type": "Journal Article", "created": "2008-04-08", "title": "Seedling Growth Response Of Two Tropical Tree Species To Nitrogen Deposition In Southern China", "description": "Seedling growth response of two tropical tree species (Schima superba and Cryptocarya concinna) to simulated N deposition was studied during a period of 11\u00a0months. One-year-old seedlings were grown in forest soil treated with N as NH4NO3 at Control\u2013no N addition, N5\u20135, N10\u201310, N15\u201315, and N30\u201330\u00a0g N m\u22122\u00a0year\u22121. The objective was to examine the effects of N addition on seedling growth and compare this effect between the two tropical tree species of different species-N-requirement. Results showed that both species responded significantly to N addition and exhibited positive effect to lower rate of N addition and negative effect to higher rate of N addition on growth parameters (height and stem base diameter, biomass production, and net photosynthetic rate). The highest values were observed in the N10 plots for S. superba and in the N15 plots for C. concinna, but the lowest values were observed in the N30 plots for both species. However, the reduction in the N30 plots was more pronounced for S. superba than for C. concinna relative to the control plots. Our findings suggest that response of seedling growth of tropical tree species to atmospheric N deposition may vary depending on rate of N deposition and species-N-requirement.", "keywords": ["0106 biological sciences", "/dk/atira/pure/core/keywords/Life", "Tropics", "Species-N-requirement", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrogen deposition", "Forest dynamic", "Global change", "01 natural sciences", "Former LIFE faculty"]}, "links": [{"href": "https://doi.org/10.1007/s10342-008-0203-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/European%20Journal%20of%20Forest%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10342-008-0203-0", "name": "item", "description": "10.1007/s10342-008-0203-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10342-008-0203-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-04-09T00:00:00Z"}}, {"id": "10.1007/s10533-004-7112-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:15:00Z", "type": "Journal Article", "created": "2005-11-04", "title": "Extracellular Enzyme Activities And Soil Organic Matter Dynamics For Northern Hardwood Forests Receiving Simulated Nitrogen Deposition", "description": "Anthropogenic nitrogen enrichment alters decomposition processes that control the flux of carbon (C) and nitrogen (N) from soil organic matter (SOM) pools. To link N-driven changes in SOM to microbial responses, we measured the potential activity of several extracellular enzymes involved in SOM degradation at nine experimental sites located in northern Michigan. Each site has three treatment plots (ambient, +30 and +80 kg N ha 1 y 1 ). Litter and soil samples were collected on five dates over the third growing season of N treatment. Phenol oxidase, peroxidase and cellobiohydrolase activities showed significant responses to N additions. In the Acer saccha- rum-Tilia americana ecosystem, oxidative activity was 38% higher in the litter horizon of high N treatment plots, relative to ambient plots, while oxidative activity in mineral soil showed little change. In the A. saccharum-Quercus rubra and Q. velutina-Q. alba ecosystems, oxidative activities declined in both litter (15 and 23%, respectively) and soil (29 and 38%, respectively) in response to high N treatment while cellobiohydrolase activity increased (6 and 39% for litter, 29 and 18% for soil, respectively). Over 3 years, SOM content in the high N plots has decreased in the Acer-Tilia ecosystem and increased in the two Quercus ecosystems, relative to ambient plots. For all three ecosystems, differences in SOM content in relation to N treatment were directly related (r 2 = 0.92) to an enzyme activity factor that included both oxidative and hydrolytic enzyme responses.", "keywords": ["Soil Science & Conservation", "Decomposition", "Science", "Ecology and Evolutionary Biology", "Terrestrial Pollution", "Natural Resources and Environment", "Molecular", "04 agricultural and veterinary sciences", "15. Life on land", "Biochemistry", "Phenol Oxidase", "Geochemistry", "Cellulase", "Soil Organic Matter", "Health Sciences", "0401 agriculture", " forestry", " and fisheries", "Nitrogen Deposition", "Cellular and Developmental Biology", "General", "Extracellular Enzyme Activity", "Geosciences"]}, "links": [{"href": "https://doi.org/10.1007/s10533-004-7112-1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10533-004-7112-1", "name": "item", "description": "10.1007/s10533-004-7112-1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10533-004-7112-1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-08-01T00:00:00Z"}}, {"id": "10.1007/s10533-008-9257-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:15:01Z", "type": "Journal Article", "created": "2008-11-11", "title": "Nitrogen Deposition Effects On Soil Organic Matter Chemistry Are Linked To Variation In Enzymes, Ecosystems And Size Fractions", "description": "Recent research has dramatically advanced our understanding of soil organic matter chemistry and the role of N in some organic matter transformations, but the effects of N deposition on soil C dynamics remain difficult to anticipate. We examined soil organic matter chemistry and enzyme kinetics in three size fractions (>250 \u03bcm, 63\u2013250 \u03bcm, and 250 \u03bcm fraction of the sugar maple\u2013basswood ecosystem from 0.9 to 3.3 but there were no changes in other size classes or in the black oak\u2013white oak ecosystem. Third, simulated N deposition increased the ratio of lignin derivatives to N-bearing compounds in the 63\u2013250 and >250 \u03bcm fractions in both ecosystems but not in the 63 \u03bcm) where there were multiple correlations between oxidative enzyme activities and concentrations of lignin derivatives and between glycanolytic enzyme activities and concentrations of carbohydrates. Within silt-clay fractions (<63 \u03bcm), these enzyme-substrate correlations were attenuated by interactions with particle surfaces. Our results demonstrate that variation in enzyme activity resulting from atmospheric N deposition is directly linked to changes in soil organic matter chemistry, particularly those that occur within coarse soil size fractions.", "keywords": ["Carbon structure", "Soil organic matter", "13. Climate action", "Pyrolysis gas chromatography/mass spectrometry", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "Biogeochemistry", "15. Life on land", "Nitrogen deposition", "Enzymes"]}, "links": [{"href": "https://doi.org/10.1007/s10533-008-9257-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10533-008-9257-9", "name": "item", "description": "10.1007/s10533-008-9257-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10533-008-9257-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-10-01T00:00:00Z"}}, {"id": "10.1007/s10533-014-0004-0", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:15:02Z", "type": "Journal Article", "created": "2014-07-09", "title": "Chronic Nitrogen Additions Suppress Decomposition And Sequester Soil Carbon In Temperate Forests", "description": "The terrestrial biosphere sequesters up to a third of annual anthropogenic carbon dioxide emis- sions, offsetting a substantial portion of greenhouse gas forcing of the climate system. Although a number of factors are responsible for this terrestrial carbon sink, atmospheric nitrogen deposition contributes by enhancing tree productivity and promoting carbon storage in tree biomass. Forest soils also represent an important, but understudied carbon sink. Here, we examine the contribution of trees versus soil to total ecosystem carbon storage in a temperate forest and investigate the mechanisms by which soils accumulate carbon in response to two decades of elevated nitrogen inputs. We find that nitrogen-induced soil carbon accumulation is of equal or greater magnitude to carbon stored in trees, with the degree of response being dependent on stand type (hardwood versus pine) and level of N addition. Nitrogen enrichment resulted in a shift in organic matter chemistry and the microbial community such that unfertilized soils had a higher relative abundance of fungi and lipid, phenolic, and N-bearing compounds; whereas, N-amended plots were associated with reduced fungal biomass and activity and higher rates of lignin accumulation. We conclude that soil carbon accumulation in response to N enrichment was largely due to a suppression of organic matter decomposition rather than enhanced carbon inputs to soil via litter fall and root production.", "keywords": ["0106 biological sciences", "Temperate forest", "13. Climate action", "Terrestrial carbon sink", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrogen deposition", "Soil carbon", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1007/s10533-014-0004-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10533-014-0004-0", "name": "item", "description": "10.1007/s10533-014-0004-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10533-014-0004-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-07-10T00:00:00Z"}}, {"id": "10.1007/s10533-015-0157-5", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:15:02Z", "type": "Journal Article", "created": "2015-11-14", "title": "Chronic Nitrogen Fertilization And Carbon Sequestration In Grassland Soils: Evidence Of A Microbial Enzyme Link", "description": "Chronic nitrogen (N) fertilization can greatly affect soil carbon (C) sequestration by altering biochemical interactions between plant detritus and soil microbes. In lignin-rich forest soils, chronic N additions tend to increase soil C content partly by decreasing the activity of lignin-degrading enzymes. In cellulose-rich grassland soils it is not clear whether cellulose-degrading enzymes are also inhibited by N additions and what consequences this might have on changes in soil C content. Here we address whether chronic N fertilization has affected (1) the C content of light versus heavier soil fractions, and (2) the activity of four extracellular enzymes including the C-acquiring enzyme \u03b2-1,4-glucosidase (BG; necessary for cellulose hydrolysis). We found that 19\u00a0years of chronic N-only addition to permanent grassland have significantly increased soil C sequestration in heavy but not in light soil density fractions, and this C accrual was associated with a significant increase (and not decrease) of BG activity. Chronic N fertilization may increase BG activity because greater N availability reduces root C:N ratios thus increasing microbial demand for C, which is met by C inputs from enhanced root C pools in N-only fertilized soils. However, BG activity and total root mass strongly decreased in high pH soils under the application of lime (i.e. CaCO3), which reduced the ability of these organo-mineral soils to gain more C per units of N added. Our study is the first to show a potential \u2018enzyme link\u2019 between (1) long-term additions of inorganic N to grassland soils, and (2) the greater C content of organo-mineral soil fractions. Our new hypothesis is that the \u2018enzyme link\u2019 occurs because (a) BG activity is stimulated by increased microbial C demand relative to N under chronic fertilization, and (b) increased BG activity causes more C from roots and from microbial metabolites to accumulate and stabilize into organo-mineral C fractions. We suggest that any combination of management practices that can influence the BG \u2018enzyme link\u2019 will have far reaching implications for long-term C sequestration in grassland soils.", "keywords": ["DECOMPOSITION", "DYNAMICS", "570", "\u03b2-1", "4-Glucosidase", "/dk/atira/pure/subjectarea/asjc/2300/2304", "NUTRIENT RELEASE", "Environmental Sciences & Ecology", "Root C:N ratio", "Extracellular enzyme activity", "LITTER DECAY", "FOREST ECOSYSTEMS", "0399 Other Chemical Sciences", "0402 Geochemistry", "Environmental Chemistry", "Geosciences", " Multidisciplinary", "beta-1", "4-Glucosidase", "Earth-Surface Processes", "Water Science and Technology", "2. Zero hunger", "Multidisciplinary", "Science & Technology", "/dk/atira/pure/subjectarea/asjc/1900/1904", "Geology", "sequestration", "Agronomy & Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "Soil carbon", "N DEPOSITION", "ORGANIC-MATTER", "PHOSPHORUS", "Fertilization", "Physical Sciences", "N ratio [Root C]", "0401 agriculture", " forestry", " and fisheries", "Soil carbon sequestration", "Liming", "TURNOVER", "Life Sciences & Biomedicine", "Geosciences", "/dk/atira/pure/subjectarea/asjc/2300/2312", "Environmental Sciences", "RESPONSES"]}, "links": [{"href": "https://doi.org/10.1007/s10533-015-0157-5"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10533-015-0157-5", "name": "item", "description": "10.1007/s10533-015-0157-5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10533-015-0157-5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-11-14T00:00:00Z"}}, {"id": "10.1007/s11104-004-0490-2", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:15:10Z", "type": "Journal Article", "created": "2005-05-31", "title": "How Does Nitrogen Availability Alter Rhizodeposition In Lolium Multiflorum Lam. During Vegetative Growth?", "description": "The objective of this work was to determine if the impact of nitrogen (N) on the release of organic carbon (C) into the soil by roots (rhizodeposition) correlated with the effect of this nutrient on some variables of plant growth. Lolium multiflorum Lam. was grown at two levels of N supply, either in sterile sand percolated with nutrient solution or in non-sterile soil. The axenic sand systems allowed continuous quantification of rhizodeposition and accurate analysis of root morphology whilst the soil microcosms allowed the study of 14C labelled C flows in physico-chemical and biological conditions relevant to natural soils. In the axenic sand cultures, enhanced N supply strongly increased the plant biomass, the plant N content and the shoot to root ratio. N supply altered the root morphology by increasing the root surface area and the density of apices, both being significantly positively correlated with the rate of organic C release by plant roots before sampling. This observation is consistent with the production of mucilage by root tips and with mechanisms of root exudation reported previously in the literature, i.e. the passive diffusion of roots solutes along the root with increased rate behind the root apex. We proposed a model of root net exudation, based on the number of root apices and on root soluble C that explained 60% of the variability in the rate of C release from roots at harvest. The effects of N on plant growth were less marked in soil, probably related to the relatively high supply of N from non-fertiliser soil-sources. N fertilization increased the shoot N concentration of the plants and the shoot to root ratio. Increased N supply decreased the partitioning of 14C to roots. In parallel, N fertilisation increased the root soluble 14C and the 14C recovered in the soil per unit of root biomass, suggesting a stimulation of root exudation by N supply. However, due to the high concentration of N in our unfertilised plants, this stimulation was assumed to be very weak because no significant effect of N was observed on the microbial C and on the bacterial abundance in the rhizosphere. Considering the difficulties in evaluating rhizodeposition in non sterile soil, it is suggested that the root soluble C, the root surface area and the root apex density are additional relevant variables that should be useful to measure along with the variables that are commonly determined when investigating how plant functioning impacts on the release of C by roots (i.e soil C, C of the microbial biomass, rhizosphere respiration).", "keywords": ["580", "2. Zero hunger", "0106 biological sciences", "exudation", "C-14 pulse labelling", "04 agricultural and veterinary sciences", "N", "15. Life on land", "01 natural sciences", "[SDV.BV]Life Sciences [q-bio]/Vegetal Biology", "rhizodeposition", "0401 agriculture", " forestry", " and fisheries", "[SDV.BV] Life Sciences [q-bio]/Vegetal Biology", "root morphology", "root soluble C"]}, "links": [{"href": "https://doi.org/10.1007/s11104-004-0490-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-004-0490-2", "name": "item", "description": "10.1007/s11104-004-0490-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-004-0490-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-02-01T00:00:00Z"}}, {"id": "10.1016/j.foreco.2008.02.005", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:16:35Z", "type": "Journal Article", "created": "2008-03-12", "title": "Why Does Rainfall Affect The Trend In Soil Carbon After Converting Pastures To Forests? A Possible Explanation Based On Nitrogen Dynamics", "description": "Abstract When trees are planted onto former pastures, soil carbon stocks typically either remain constant or decrease, with decreases more common in regions with higher rainfall. We conducted a modelling analysis to assess whether those changes in soil carbon, especially the interaction with rainfall, could be understood through consideration of nitrogen balances. The study was based on simulations with the whole-system ecophysiological model CenW which allowed explicit modelling of both carbon and nitrogen pools and their fluxes through plants and soil organic matter. We found that in a modelled coniferous forest without excess water input, total system nitrogen stocks remained similar to pre-forestation values because there were few pathways for nitrogen losses, and without biological nitrogen fixation or fertiliser inputs, gains were restricted to small inputs from atmospheric deposition. However, tree biomass and the litter layer accumulated considerable amounts of nitrogen. This accumulation of nitrogen came at the expense of depleting soil nitrogen stocks. With the change from input of grass litter that is low in lignin to forest litter with higher lignin concentration, organic-matter C:N ratios increased so that more carbon could be stored per unit of soil nitrogen which partly negated the effect of reduced nitrogen stocks. The increase in C:N ratios was initially confined to the surface litter layer because of slow transfer of material to the mineral soil. Over a period of decades, soil C:N ratios eventually increased in the soil as well. Simulations with different amounts of precipitation showed that greater amounts of nitrogen were leached from systems where water supply exceeded the plants\u2019 requirements. Reduced nitrogen stocks then caused a subsequent reduction in soil organic carbon stocks. These simulations thus provided a consistent explanation for the observation of greater losses of soil organic carbon in high-rainfall systems after converting pastures to forests. More generally, the simulations showed that explicit modelling of the nitrogen cycle can put important constraints on possible changes in soil-carbon stocks that may occur after land-use change.", "keywords": ["land use change", "Rainfall", "Mitigation", "ecophysiology", "nitrogen cyc Afforestation", "Greenhouse", "Nitrogen", "Rain", "CenW", "Land-use change", "lignin", "Greenhouse effect", "afforestation", "carbon cycle", "Forest", "Reforestation", "Keywords: Carbon", "2. Zero hunger", "atmospheric deposition", "Nitrogen dynamics", "04 agricultural and veterinary sciences", "15. Life on land", "Carbon", "13. Climate action", "Land use", "ecological modeling", "0401 agriculture", " forestry", " and fisheries", "grassland"], "contacts": [{"organization": "Roger M. Gifford, Miko U. F. Kirschbaum, Miko U. F. Kirschbaum, Lan Bin Guo,", "roles": ["creator"]}]}, "links": [{"href": "https://openresearch-repository.anu.edu.au/bitstream/1885/61047/5/Kirschbaum_Rainfall_affect_in_soil_carbon.pdf.jpg"}, {"href": "https://openresearch-repository.anu.edu.au/bitstream/1885/61047/7/01_Kirschbaum_Why_does_rainfall_affect_the_2008.pdf.jpg"}, {"href": "https://doi.org/10.1016/j.foreco.2008.02.005"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Forest%20Ecology%20and%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.foreco.2008.02.005", "name": "item", "description": "10.1016/j.foreco.2008.02.005", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2008.02.005"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-04-01T00:00:00Z"}}, {"id": "10.1016/b978-0-08-043201-4.50067-8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:15:36Z", "type": "Journal Article", "created": "2002-07-25", "title": "Soil Nitrous Oxide And Nitric Oxide Emissions As Indicators Of Elevated Atmospheric N Deposition Rates In Seminatural Ecosystems", "description": "Abstract Elevated N deposition caused by ammonia emissions from poultry and pig farms, and supplemented N concentrations in acid mist in field and chamber experiments increased soil available NH4+ and NO3\u2212 concentrations and emissions of N2O and NO. In a \u2018pristine\u2019 soil, not previously exposed to high N deposition rates, an initial threshold of 40 kg N ha\u22121 year \u22121 was required to increase N2O emissions. For all data described here on average 0.76% (range 0.2 to 15%) of the elevated N deposited was emitted as N2O. For soils exposed to long-term and large N deposition rates N2O losses >3% of the N deposition rate were calculated. This suggests that N2O losses of more than 3% of the N input can be indicative of soil ecosystems where the N input exceeds its demand. For NO a more limited data set showed losses ranging from 1.3 to 20% of the elevated N input. It was calculated that NH3 emissions from all intensive pig and poultry farms in Great Britain accounted for 18 t N2O\ue5f8N year\u22121 and that poultry farms accounted for less than 3 t NO\ue5f8N year\u22121.", "keywords": ["Nitrous oxide", "nitric oxide", "13. Climate action", "15. Life on land", "soils", "01 natural sciences", "N deposition", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/b978-0-08-043201-4.50067-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/b978-0-08-043201-4.50067-8", "name": "item", "description": "10.1016/b978-0-08-043201-4.50067-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/b978-0-08-043201-4.50067-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1998-01-01T00:00:00Z"}}, {"id": "10.1016/j.ecss.2007.10.024", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:16:17Z", "type": "Journal Article", "created": "2007-11-06", "title": "Spatial And Temporal Variations In Sediment Grain Size In Tidal Wetlands, Yangtze Delta: On The Role Of Physical And Biotic Controls", "description": "To examine the spatial and temporal variability of sediment grain size in exposed tidal wetlands with ample sediment supply, we sampled sediments and measured hydrodynamics, accretion/erosion rates, and vegetation characteristics in the Yangtze Delta. Sediment grain size exhibited a landward/upward decreasing trend. This trend is mainly attributed to attenuation of hydrodynamics. A 630-day series of daily surface sediment sampling at a fixed site on an unvegetated intertidal flat revealed significant seasonal and storm-cyclic changes in grain size. This temporal variability was related to alternating accretion/erosion events, with erosion associated with coarser grain size. Such temporal dynamics were not present in vegetation, where sediment remained fine grained throughout the year. In the marsh, vegetation cover enables the trapping of fine-grained sediments in the following ways: (a) adherence of suspended sediments onto plants; (b) deposition of suspended sediments stimulated by attenuation of hydrodynamics through plant obstruction; and (c) prevention of resuspension of fine-grained deposits due to the protection of the plant canopy. The influence of vegetation on sediment grain size was clearly seen when comparing sediment trapped by different vegetation types and seasonal patterns of trapped sediment on different vegetation canopy densities. The relatively high plant biomass of the recently introduced Spartina alterniflora enhanced the trapping effect, whereas plant degradation due to buffalo grazing reduced the trapping effect. We conclude that for exposed tidal wetlands with ample sediment supply such as the Yangtze Delta, the spatial and temporal variability of sediment grain size is governed predominantly by physical controls on the unvegetated flat and predominantly by biophysical interaction of hydrodynamics and vegetation in the salt marsh, rather than by sediment supply.", "keywords": ["grain size", "salt marsh", "0106 biological sciences", "sediment", "13. Climate action", "Yangtze (Changjiang) Delta", "15. Life on land", "deposition", "01 natural sciences", "tidal wetland", "6. Clean water", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Shilun Yang, Weiguo Zhang, Pingxing Ding, Ya Wang, Ming Li, P. Li, T.J. Ysebaert, Tjeerd J. Bouma, H. Li,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.ecss.2007.10.024"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Estuarine%2C%20Coastal%20and%20Shelf%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.ecss.2007.10.024", "name": "item", "description": "10.1016/j.ecss.2007.10.024", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.ecss.2007.10.024"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-05-01T00:00:00Z"}}, {"id": "10.1016/j.geodrs.2024.e00879", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:16:49Z", "type": "Journal Article", "created": "2024-10-10", "title": "Cover crop mixtures enhance belowground carbon input and suppression of spontaneous flora under Danish conditions", "description": "

Cover crop (CC) mixtures offer a unique set of advantages that can enhance soil health and agricultural productivity when compared to pure stand CC. However, a quantitative understanding of the varying contributions of different carbon (C) input pathways in CC mixtures is lacking. To address these gaps, a field experiment with multiple-pulse labelling with 13CO2 was used to quantify C-derived from CC mixtures via plant biomass, as well as via phyllo- and rhizodeposition. We assessed the impact of preceding main crops (barley, barley-pea, pea, and faba bean) on soil C input to 75 cm depth by two CC treatments (pure stand ryegrass versus a mixture of chicory, plantain, and ryegrass) and their effect on spontaneous flora (SF) biomass and diversity. In topsoil layers (0\u201325 cm), net C lost to soil via phyllo- and rhizodeposition was higher with mixed CC (30 g C m\u22122) than pure stand ryegrass (25 g C m\u22122). Between 25 and 75 cm, mixed CC and pure stand CC had similar C inputs via rhizodeposition despite larger root biomass in mixed CC. Cover crops reduced SF biomass and diversity, with mixed CC exerting the strongest suppressive effect, reducing biomass (individuals counted) by 57 % compared to the control. The improved efficiency of mixed CC was attributed to species complementarity in leaf and root patterns, resource utilization, and nutrient uptake. In conclusion, well-designed mixed CC had a greater positive impact on soil C inputs and suppression of SF compared to CC pure stand with ryegrass, resulting from complementary above and belowground traits.

", "keywords": ["0106 biological sciences", "Soil organic carbon", "Phyllodeposition", "CO labeling", "0401 agriculture", " forestry", " and fisheries", "Biodiversity", "04 agricultural and veterinary sciences", "Species mixtures", "Rhizodeposition", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.geodrs.2024.e00879"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoderma%20Regional", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.geodrs.2024.e00879", "name": "item", "description": "10.1016/j.geodrs.2024.e00879", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.geodrs.2024.e00879"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-12-01T00:00:00Z"}}, {"id": "10.1890/12-1760.1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:20:45Z", "type": "Journal Article", "created": "2013-07-09", "title": "Earthworm Effects On The Incorporation Of Litter C And N Into Soil Organic Matter In A Sugar Maple Forest", "description": "

To examine the mechanisms of earthworm effects on forest soil C and N, we double\uffe2\uff80\uff90labeled leaf litter with13C and15N, applied it to sugar maple forest plots with and without earthworms, and traced isotopes into soil pools. The experimental design included forest plots with different earthworm community composition (dominated byLumbricus terrestrisorL. rubellus). Soil carbon pools were 37% lower in earthworm\uffe2\uff80\uff90invaded plots largely because of the elimination of the forest floor horizons, and mineral soil C:N was lower in earthworm plots despite the mixing of high C:N organic matter into soil by earthworms. Litter disappearance over the first winter\uffe2\uff80\uff93spring was highest in theL. terrestris(T) plots, but during the warm season, rapid loss of litter was observed in bothL. rubellus(R) and T plots. After two years, 22.0% \uffc2\uffb1 5.4% of13C released from litter was recovered in soil with no significant differences among plots. Total recovery of added13C (decaying litter plus soil) was much higher in no\uffe2\uff80\uff90worm (NW) plots (61\uffe2\uff80\uff9368%) than in R and T plots (20\uffe2\uff80\uff9329%) as much of the litter remained in the former whereas it had disappeared in the latter. Much higher percentage recovery of15N than13C was observed, with significantly lower values for T than R and NW plots. Higher overwinter earthworm activity in T plots contributed to lower soil N recovery. In earthworm\uffe2\uff80\uff90invaded plots isotope enrichment was highest in macroaggregates and microaggregates whereas in NW plots silt plus clay fractions were most enriched. The net effect of litter mixing and priming of recalcitrant soil organic matter (SOM), stabilization of SOM in soil aggregates, and alteration of the soil microbial community by earthworm activity results in loss of SOM and lowering of the C:N ratio. We suggest that earthworm stoichiometry plays a fundamental role in regulating C and N dynamics of forest SOM.

", "keywords": ["Time Factors", "Nitrogen", "TEMPERATE HARDWOOD FOREST", "New York", "Acer", "C:N ratio", "Trees", "OLD-GROWTH FOREST", "Soil", "litter", "EXOTIC EARTHWORMS", "Animals", "NORTHEASTERN FORESTS", "Oligochaeta", "CARBON DYNAMICS", "Ecosystem", "2. Zero hunger", "decomposition", "NITROGEN DEPOSITION", "Ecology", "Lumbricus", "MICROBIAL BIOMASS", "04 agricultural and veterinary sciences", "15. Life on land", "DECIDUOUS FOREST", "Carbon", "stoichiometry", "aggregate", "0401 agriculture", " forestry", " and fisheries", "LUMBRICUS-TERRESTRIS", "Environmental Sciences", "CENTRAL NEW-YORK", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1890/12-1760.1"}, {"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": "10.1890/12-1760.1", "name": "item", "description": "10.1890/12-1760.1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/12-1760.1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-07-01T00:00:00Z"}}, {"id": "10.1016/j.forpol.2011.09.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:16:41Z", "type": "Journal Article", "created": "2011-11-23", "title": "Cost-Benefit Analysis Of Soil And Water Conservation Measure: The Case Of Exclosures In Northern Ethiopia", "description": "Abstract This paper is about the cost-benefit analysis of a specific soil and water conservation measure, commonly termed as \u2018 exclosures \u2019 in the case study area of this research, adopted in the Tigray region of northern Ethiopia. The analysis integrated available data on on-site and off-site effects of the conservation measure. Major benefit and cost items related to this specific measure were identified, quantified, and valued. Direct market prices and variants of indirect environmental valuation techniques (cost based and productivity change methods) were employed in valuing the benefit and cost items included in the analysis. Our results indicate that establishing exclosures in degrading marginal lands generate a large positive net present value (NPV) of ETB 5620\u00a0ha \u22121 . However, putting productive agricultural land under exclosures yields a negative NPV even under some hypothetical scenarios of 50% rise in prices of forest products and a social discount rate halved from the base rate of 8%. Sensitivity analyses indicate that the net present value is quite volatile to changes in biomass production and the social discount rate. Thus, appropriate forest management schemes have to be adopted in order to maximize sustainable biomass production. Furthermore, factors such as credit constraints that affect local people's time preference should be addressed to induce local people to discount the future at lower rate.", "keywords": ["2. Zero hunger", "Net present value", "Tigray", "Cost-benefit analysis", "SEDIMENT DEPOSITION", "04 agricultural and veterinary sciences", "15. Life on land", "FOREST", "01 natural sciences", "7. Clean energy", "6. Clean water", "HIGHLANDS", "Exclosures", "ECONOMIC-ANALYSIS", "Off-site effects", "Earth and Environmental Sciences", "LAND DEGRADATION", "TIGRAY", "MANAGEMENT", "AFFORESTATION", "0401 agriculture", " forestry", " and fisheries", "On-site effects", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.forpol.2011.09.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Forest%20Policy%20and%20Economics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.forpol.2011.09.008", "name": "item", "description": "10.1016/j.forpol.2011.09.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.forpol.2011.09.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-02-01T00:00:00Z"}}, {"id": "10.1016/j.funeco.2016.05.011", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:16:41Z", "type": "Journal Article", "created": "2016-06-26", "title": "Chronic Nitrogen Additions Fundamentally Restructure The Soil Fungal Community In A Temperate Forest", "description": "Abstract Fungi dominate the microbial biomass of temperate forest soils and are a key driver of ecosystem nutrient cycling. Chronic nitrogen (N) amendments frequently cause the accumulation of soil organic matter within soils, suggesting that elevated N disrupts decomposition by altering fungal communities. To link previously observed increases in soil organic matter with potential changes in the fungal community, we assessed the effects of soil N amendment on fungal community structure at a long-term N addition experiment at Harvard Forest (Petersham, MA, USA). A decline in the relative abundance of ectomycorrhizal fungi following long-term N addition was offset by an increase in the relative abundance of saprotrophs. Species richness and diversity of ectomycorrhizal fungi declined, while ascomycetes and saprotrophs responded positively to N enrichment. However, nitrophilic species included ectomycorrhizal as well as saprotrophic fungi, especially the ectomycorrhizal Russula vinacea, whose relative abundance increased from 10 to 37% of the entire community across N treatments. Two decades of soil N enrichment appears to have fundamentally altered the soil fungal community of this temperate forest.", "keywords": ["Basidiomycetes", "0106 biological sciences", "2. Zero hunger", "Diversity", "Community", "Soil fungi", "04 agricultural and veterinary sciences", "Biogeochemistry", "15. Life on land", "Nitrogen deposition", "01 natural sciences", "Ascomycetes", "0401 agriculture", " forestry", " and fisheries", "DNA barcoding"]}, "links": [{"href": "https://doi.org/10.1016/j.funeco.2016.05.011"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Fungal%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.funeco.2016.05.011", "name": "item", "description": "10.1016/j.funeco.2016.05.011", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.funeco.2016.05.011"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-10-01T00:00:00Z"}}, {"id": "10.1016/j.geoderma.2006.01.004", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:16:43Z", "type": "Journal Article", "created": "2006-03-16", "title": "The Effects Of Erosional And Management History On Soil Organic Carbon Stores In Ephemeral Wetlands Of Hummocky Agricultural Landscapes", "description": "Carbon sequestration by agricultural soils has been widely promoted as a means of mitigating greenhouse gas emissions. In many regions agricultural fields are just one component of a complex landscape matrix and understanding the interactions between agricultural fields and other landscape components such as wetlands is crucial for comprehensive, whole-landscape accounting of soil organic carbon (SOC) change. Our objective was to assess the effects of management and erosional history on SOC storage in wetlands of a typical hummocky agricultural landscape in southern Saskatchewan. Wetlands were classed into three land management groups: native wetlands (i.e., within a native landscape), and uncultivated and cultivated wetlands within an agricultural landscape. Detailed topographic surveys were used to develop a digital elevation model of the sites and landform segmentation algorithms were used to delineate the topographic data into landform elements. SOC density to 45 cm was assessed at seven uncultivated wetlands, seven cultivated wetlands, and twelve native wetlands. Mean SOC density decreased from 175.1 mg ha? 1 to 30 cm (equivalent mass depth) for the native wetlands to 168.6 mg ha? 1 for the uncultivated wetlands and 87.2 mg ha? 1 for the cultivated wetlands in the agricultural field. The SOC density of sediment depositional fans in the uncultivated wetlands is high but the total SOC stored in the fans is low due to their small area. The uncultivated wetlands occupy only 11% of the site but account for approximately 23% of SOC stores. Re-establishing permanent vegetation in the cultivated wetlands could provide maximum C sequestration with minimum energy inputs and a minimum loss of productive acreage but the overall consequences for the gas emissions would have to be carefully assessed.", "keywords": ["2. Zero hunger", "canada", "04 agricultural and veterinary sciences", "15. Life on land", "deposition", "6. Clean water", "redistribution", "storage", "cultivation", "vegetation", "13. Climate action", "landform segmentation procedures", "impact", "0401 agriculture", " forestry", " and fisheries", "saskatchewan", "morainal landscape"]}, "links": [{"href": "https://doi.org/10.1016/j.geoderma.2006.01.004"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoderma", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.geoderma.2006.01.004", "name": "item", "description": "10.1016/j.geoderma.2006.01.004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.geoderma.2006.01.004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-11-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2008.11.046", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:17:09Z", "type": "Journal Article", "created": "2008-12-20", "title": "How Nitrogen And Sulphur Addition, And A Single Drought Event Affect Root Phosphatase Activity In Phalaris Arundinacea", "description": "Conservation and restoration of fens and fen meadows often aim to reduce soil nutrients, mainly nitrogen (N) and phosphorus (P). The biogeochemistry of P has received much attention as P-enrichment is expected to negatively impact on species diversity in wetlands. It is known that N, sulphur (S) and hydrological conditions affect the biogeochemistry of P, yet their interactive effects on P-dynamics are largely unknown. Additionally, in Europe, climate change has been predicted to lead to increases in summer drought. We performed a greenhouse experiment to elucidate the interactive effects of N, S and a single drought event on the P-availability for Phalaris arundinacea. Additionally, the response of plant phosphatase activity to these factors was measured over the two year experimental period. In contrast to results from earlier experiments, our treatments hardly affected soil P-availability. This may be explained by the higher pH in our soils, hampering the formation of Fe-P or Fe-Al complexes. Addition of S, however, decreased the plants N:P ratio, indicating an effect of S on the N:P stoichiometry and an effect on the plant's P-demand. Phosphatase activity increased significantly after addition of S, but was not affected by the addition of N or a single drought event. Root phosphatase activity was also positively related to plant tissue N and P concentrations, plant N and P uptake, and plant aboveground biomass, suggesting that the phosphatase enzyme influences P-biogeochemistry. Our results demonstrated that it is difficult to predict the effects of wetland restoration, since the involved mechanisms are not fully understood. Short-term and long-term effects on root phosphatase activity may differ considerably. Additionally, the addition of S can lead to unexpected effects on the biogeochemistry of P. Our results showed that natural resource managers should be careful when restoring degraded fens or preventing desiccation of fen ecosystems.", "keywords": ["summer", "0106 biological sciences", "plant tissue", "550", "Sulphate induced enzyme activity", "phosphorus limitation", "plant", "sulfate", "drought", "deposition", "Plant Roots", "01 natural sciences", "nitrogen", "iron", "biogeochemistry", "Root-surface phosphatase", "SDG 13 - Climate Action", "Phalaris", "species richness", "phosphorus", "N:P stoichiometry", "manager", "Plant Proteins", "2. Zero hunger", "pH", "grasslands", "Phosphorus", "dynamics", "04 agricultural and veterinary sciences", "wetland", "6. Clean water", "enzyme activity", "stoichiometry", "Europe", "eutrophication", "climate change", "Nitrogen", "growth", "fresh-water wetlands", "phosphatase", "soil", "desiccation", "Stress", " Physiological", "N:P ratios", "greenhouse", "N:P rations", "Fertilizers", "580", "Phosphorus uptake", "ecosystem", "biomass", "species diversity", "carbon", "nutrient", "15. Life on land", "Phosphoric Monoester Hydrolases", "enzyme", "fertilization", "13. Climate action", "Wetlands", "sulfur", "0401 agriculture", " forestry", " and fisheries", "Sulfur"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2008.11.046"}, {"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.2008.11.046", "name": "item", "description": "10.1016/j.scitotenv.2008.11.046", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2008.11.046"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-03-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2017.09.202", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:17:12Z", "type": "Journal Article", "created": "2017-09-24", "title": "Nitrogen And Phosphorus Enrichment Effects On Co2 And Methane Fluxes From An Upland Ecosystem", "description": "Reactive nitrogen (N) deposition can affect many ecosystem processes, particularly in oligotrophic habitats, and is expected to affect soil C storage potential through increases in microbial decomposition rate as a consequence of greater N availability. Increased N availability may also result in changes in the principal limitations on ecosystem productivity. Phosphorus (P) limitation may constrain productivity in instances of high N deposition, yet ecosystem responses to P availability are poorly understood. This study investigated CO2 and CH4 flux responses to N and P enrichment using both short- (1year) and long-term (16year) nutrient addition experiments. We hypothesised that the addition of either N or P will increase CO2 and CH4 fluxes, since both plant production and microbial activity are likely to increase with alleviation from nutrient limitation. This study demonstrated the modification of C fluxes from N and P enrichment, with differing results subject to the duration of nutrient addition. On average, relative to control, the addition of N alone inhibited CO2 flux in the short-term (-9%) but considerably increased CO2 emissions in the long-term (+35%), reduced CH4 uptake in the short term (-90%) and reduced CH4 emission in the long term (-94%). Phosphorus addition increased CO2 and CH4 emission in the short term (+20% and +184% respectively), with diminishing effect into the long term, suggesting microbial communities at these sites are P limited. Whilst a full C exchange budget was not examined in the experiment, the potential for soil C storage loss with long-term nutrient enrichment is demonstrated and indicates that P addition, where P is a limiting factor, may have an adverse influence on upland soil C content.", "keywords": ["nitrogen deposition", "2. Zero hunger", "0301 basic medicine", "0303 health sciences", "03 medical and health sciences", "P limitation", "13. Climate action", "pollution", "soil carbon", "carbon fluxes", "15. Life on land", "co-limitation", "6. Clean water"], "contacts": [{"organization": "Stiles, William A.V., Rowe, Edwin C., Dennis, Peter,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2017.09.202"}, {"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.2017.09.202", "name": "item", "description": "10.1016/j.scitotenv.2017.09.202", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2017.09.202"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-03-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2018.11.010", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:17:12Z", "type": "Journal Article", "created": "2018-11-03", "title": "\u03b415N of lichens reflects the isotopic signature of ammonia source", "description": "Although it is generally accepted that \u03b415N in lichen reflects predominating N isotope sources in the environment, confirmation of the direct correlation between lichen \u03b415N and atmospheric \u03b415N is still missing, especially under field conditions with most confounding factors controlled. To fill this gap and investigate the response of lichens with different tolerance to atmospheric N deposition, thalli of the sensitive Evernia prunastri and the tolerant Xanthoria parietina were exposed for ten weeks to different forms and doses of N in a field manipulation experiment where confounding factors were minimized. During this period, several parameters, namely total N, \u03b415N and chlorophyll a fluorescence, were measured. Under the experimental conditions, \u03b415N in lichens quantitatively responded to the \u03b415N of released gaseous ammonia (NH3). Although a high correlation between the isotopic signatures in lichen tissue and supplied N was found both in tolerant and sensitive species, chlorophyll a fluorescence indicated that the sensitive species very soon lost its photosynthetic functionality with increasing N availability. The most damaging response to the different N chemical forms was observed with dry deposition of NH3, although wet deposition of ammonium ions had a significant observable physiological impact. Conversely, there was no significant effect of nitrate ions on chlorophyll a fluorescence, implying differential sensitivity to dry deposition versus wet deposition and to ammonium versus nitrate in wet deposition. Evernia prunastri was most sensitive to NH3, then NH4+, with lowest sensitivity to NO3-. Moreover, these results confirm that lichen \u03b415N can be used to indicate the \u03b415N of atmospheric ammonia, providing a suitable tool for the interpretation of the spatial distribution of NH3 sources in relation to their \u03b415N signal.", "keywords": ["Air Pollutants", "Nitrates", "Lichens", "Nitrogen Isotopes", "Chlorophyll A", "0211 other engineering and technologies", "02 engineering and technology", "Models", " Theoretical", "chlorophyll a fluorescence", "01 natural sciences", "nitrogen deposition", "Xanthoria parietina", "Species Specificity", "Ammonia", "13. Climate action", "source spatial distribution", "biomonitoring", "physiological response", "Photosynthesis", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2018.11.010"}, {"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.2018.11.010", "name": "item", "description": "10.1016/j.scitotenv.2018.11.010", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2018.11.010"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.01.013", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:17:18Z", "type": "Journal Article", "created": "2006-03-21", "title": "How Important Is N2o Production In Removing Atmospherically Deposited Nitrogen From Uk Moorland Catchments?", "description": "Nitrate (NO3\u2212) leaching due to anthropogenic nitrogen (N) deposition is an environmental problem in many parts of the UK uplands, associated with surface water acidification and affecting lake nutrient balances. It is often assumed that gaseous return of deposited N to the atmosphere as N2O through denitrification may provide an important sink for N. This assumption was tested for four moorland catchments (Allt a\u2019Mharcaidh in the Cairngorms, Afon Gwy in mid-Wales, Scoat Tarn in the English Lake District and River Etherow in the southern Pennines), covering gradients of atmospheric N deposition and surface water NO3\u2212 leaching, through a combination of field and laboratory experiments. Field measurements of N2O fluxes from static chambers with and without additions of NH4NO3 solution were carried out every 4 weeks over 1 yr. Wetted soil cores from the same field plots were used in experimental laboratory incubations at 5 and 15 \u00b0C with and without additions of NH4NO3 solution, followed by measurement of N2O fluxes. Field measurements showed that significant N2O fluxes occurred in only a very small number of plots with most showing zero values for much of the year. The maximum fluxes were 0.24 kg-N/ha/yr from unamended plots at the River Etherow and 0.49 kg-N/ha/yr from plots with NH4NO3 additions at the Allt a\u2019Mharcaidh. Laboratory incubation experiments demonstrated that large N2O fluxes could be induced by warming and NH4NO3 additions, with the top 5 cm of soil cores responsible for the largest fluxes, reaching 11.8 kg-N/ha/yr from a podsol at Scoat Tarn. Acetylene block experiments showed that while N2 was not likely to be a significant denitrification product in these soils, reduced N2O fluxes indicated that nitrification was an important source of N2O in many cases. A simple model of denitrification suggesting that 10\u201380% of net N inputs may be denitrified from non-agricultural soils was found to greatly over-estimate fluxes in the UK uplands. The proportion of deposition denitrified was found to be much closer to the IPCC suggested value of 1% with an upper limit of 10%. Interception of N deposition by vegetation may greatly reduce the net supply of N from this source, while soil acidification or other factors limiting carbon supply to soil microbes may prevent large denitrification fluxes even where NO3\u2212 supply is not limiting.", "keywords": ["denitrification", "nitrous oxide", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "nitrification", "6. Clean water", "moorlands", "nitrogen deposition", "acidification", "13. Climate action", "nitrate leaching", "nitrogen saturation", "0401 agriculture", " forestry", " and fisheries", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.01.013"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.01.013", "name": "item", "description": "10.1016/j.soilbio.2006.01.013", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.01.013"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-08-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2018.08.059", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:17:12Z", "type": "Journal Article", "created": "2018-08-05", "title": "Measuring and mapping the effectiveness of the European Air Quality Directive in reducing N and S deposition at the ecosystem level", "description": "To protect human health and the environment (namely ecosystems), international air quality protocols and guidelines, like the Gothenburg protocol (1999) and the 2001 EU Air Quality Directive (NECD), conveyed national emission ceilings for atmospheric pollutants (Directive 2001/81/EC), including the reduction of sulfur (S) and nitrogen (N) emissions by 2010. However, to what degree this expected reduction in emissions had reflections at the ecosystem level (i.e. pollutant levels reaching and impacting ecosystems and their organisms) remains unknown. Here, we used lichens as ecological indicators, together with reported air and precipitation pollutant concentrations, to determine and map the consequences of the S and N atmospheric emission's reduction, during the implementation of the 2001 Directive (in 2002 and 2011), due primarily to the industrial-sector. The study area is a mixed-land-use industrialized Mediterranean agroforest ecosystem, in southwest Europe. The reduction of S emissions (2002-2011) was reflected at the ecosystem level, as the same S-declining trend was observed in atmospheric measurement stations and lichens alike (-70%), indicating that most S deposited to the ecosystem had an industrial origin. However, this was not the case for N with a slight N-reduction near industrial facilities, but mostly N-deposition in lichens increased in areas dominated by agricultural land-uses. Taken together, these results highlight the importance of going beyond emissions estimation and modeling, to assess the success of the implementation of the NECD in lowering pollutant accumulation in living organisms and their environment. This can only be achieved by measuring pollutant deposition at the ecosystem level (e.g. living organisms). By doing so, we were able to show that the 2001 NECD was successful in reducing S concentrations from Industry, whereas N remains a challenge. Despite the small reduction in N-emissions, deposition into ecosystems did not reflect these changes as agriculture and transport sectors must reduce NH3 and NOx emissions.", "keywords": ["Air Pollutants", "Nitrogen", "Rain", "0211 other engineering and technologies", "02 engineering and technology", "15. Life on land", "01 natural sciences", "6. Clean water", "Environmental Policy", "12. Responsible consumption", "Europe", "13. Climate action", "Ecological indicator; Nitrogen; Sulfur; Deposition; Emission; Air Quality Directive", "Air Pollution", "11. Sustainability", "Humans", "Ecosystem", "Sulfur", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2018.08.059"}, {"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.2018.08.059", "name": "item", "description": "10.1016/j.scitotenv.2018.08.059", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2018.08.059"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2005.10.002", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:17:18Z", "type": "Journal Article", "created": "2005-11-09", "title": "Short And Long-Term Effects Of Elevated Co2 On Lolium Perenne Rhizodeposition And Its Consequences On Soil Organic Matter Turnover And Plant N Yield", "description": "It is still unclear whether elevated CO 2 increases plant root exudation and consequently affects the soil microbial biomass. The effects of elevated CO 2 on the fate of the C and nitrogen (N) contained in old soil organic matter pools is also unclear. In this study the short and long-term effects of elevated CO 2 on C and N pools and fluxes were assessed by growing isolated plants of ryegrass (Lolium perenne) in glasshouses at elevated and ambient atmospheric CO 2 and using soil from the New Zealand FACE site that had >4 years exposure to CO 2 enrichment. Using 14 CO 2 pulse labelling, the effects of elevated CO 2 on C allocation within the plant-soil system were studied. Under elevated CO 2 more root derived C was found in the soil and in the microbial biomass 48 h after labelling. The increased availability of substrate significantly stimulated soil microbial growth and acted as priming effect, enhancing native soil organic matter decomposition regardless of the mineral N supply. Despite indications of faster N cycling in soil under elevated CO 2 , N availability to plants stayed unchanged. Soil previously exposed to elevated CO 2 exhibited a higher N cycling rate but again there was no effect on plant N uptake. With respect to the difficulties of extrapolating glasshouse experiment results to the field, we concluded that the accumulation of coarse organic matter observed in the field under elevated CO 2 was probably not created by an imbalance between C and N but was likely to be due to more complex phenomena involving soil mesofauna and/or other nutrients limitations.", "keywords": ["580", "RHIZODEPOSITION", "2. Zero hunger", "RAY GRASS ANGLAIS", "PRIMING EFFECT", "15N", "RYEGRASS", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "15. Life on land", "ELEVATED CO2", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2005.10.002"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2005.10.002", "name": "item", "description": "10.1016/j.soilbio.2005.10.002", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2005.10.002"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-06-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.08.023", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-07-27T16:17:20Z", "type": "Journal Article", "created": "2007-11-06", "title": "Direct And Indirect Effects Of Nitrogen Deposition On Litter Decomposition", "description": "Elevated nitrogen (N) deposition can affect litter decomposition directly, by raising soil N availability and the quantity and quality of litter inputs, and indirectly by altering plant community composition. We investigated the importance of these controls on litter decomposition using litter bags placed in annual herb based microcosm ecosystems that had been subject to two rates of N deposition (which raised soil inorganic N availability and stimulated litter inputs) and two planting regimes, namely the plant species compositions of low and high N deposition environments. In each microcosm, we harvested litter bags of 10 annual plant species, over an 8-week period, to determine mass loss from decomposition. Our data showed that species differed greatly in their decomposability, but that these differences were unlikely to affect decomposition at the ecosystem level because there was no correlation between a species\u2019 decomposability and its response to N deposition (measured as population seed production under high N, relative to low N, deposition). Litter mass loss was 2% greater in high N deposition microcosms. Using a comprehensive set of measurements of the microcosm soil environments, we found that the most statistically likely explanation for this effect was increased soil enzyme activity (cellobiosidase, \u03b2-glucosidase and \u03b2-xylosidase), which appears to have occurred in response to a combination of raised soil inorganic N availability and stimulated litter inputs. Our data indicate that direct effects of N deposition on litter input and soil N availability significantly affected decomposition but indirect effects did not. We argue that indirect effects of changes to plant species composition could be stronger in natural ecosystems, which often contain a greater diversity of plant functional types than those considered here.", "keywords": ["2. Zero hunger", "570", "Litter decomposition", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrogen deposition", "630", "Plant species composition", "C:N ratio", "13. Climate action", "Decomposer community", "PLFA", "0401 agriculture", " forestry", " and fisheries", "Soil enzyme activities"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.08.023"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.08.023", "name": "item", "description": "10.1016/j.soilbio.2007.08.023", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.08.023"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-03-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2012.12.017", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:17:25Z", "type": "Journal Article", "created": "2013-01-22", "title": "Bacterial Growth And Growth-Limiting Nutrients Following Chronic Nitrogen Additions To A Hardwood Forest Soil", "description": "Increasing nitrogen(N) deposition due to anthropogenic activities has become a significant global change threat to N-poor terrestrial ecosystems. We compared bacterial growth and nutrients limiting bacterial growth in one of the longest running experiments on increasing N-deposition to a temperate forest, the Chronic Nitrogen Amendment Study at Harvard Forest, USA. Soil samples were collected in fall 2009 from the organic and mineral horizons of plots treated annually since 1988 with 0 (unfertilized), 50(low N) or 150 (high N) kg N ha(-1) as NH4NO3. In the organic horizon, bacterial growth (leucine incorporation) decreased by 5 times in the high N plots compared to the unfertilized treatment, while no decrease was observed in the mineral horizon. Bacterial growth in all soils was primarily limited by lack of carbon (C), although adding only C (as glucose) resulted in only a minor increase in bacterial growth in the unfertilized soil compared to adding C in combination with N. The bacterial growth induced by adding only C increased with higher level of N fertilization, up to 7-8 times the level without any C addition in the high N treatment, suggesting increased availability of N for the bacteria with increasing N addition. (C) 2013 Elsevier Ltd. All rights reserved. (Less)", "keywords": ["N availability", "2. Zero hunger", "0106 biological sciences", "Bacterial growth", "Leucine incorporation", "Limiting factors", "0401 agriculture", " forestry", " and fisheries", "N-deposition", "04 agricultural and veterinary sciences", "Biogeochemistry", "15. Life on land", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2012.12.017"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2012.12.017", "name": "item", "description": "10.1016/j.soilbio.2012.12.017", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2012.12.017"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-04-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2016.03.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:17:28Z", "type": "Journal Article", "created": "2016-03-26", "title": "Soil microbial carbon use efficiency and biomass turnover in a long-term fertilization experiment in a temperate grassland", "description": "

Soil microbial carbon use efficiency (CUE), defined as the ratio of organic C allocated to growth over organic C taken up, strongly affects soil carbon (C) cycling. Despite the importance of the microbial CUE for the terrestrial C cycle, very little is known about how it is affected by nutrient availability. Therefore, we studied microbial CUE and microbial biomass turnover time in soils of a long-term fertilization experiment in a temperate grassland comprising five treatments (control, PK, NK, NP, NPK). Microbial CUE and the turnover of microbial biomass were determined using a novel substrate-independent method based on incorporation of 18O from labeled water into microbial DNA. Microbial respiration was 28-37% smaller in all three N treatments (NK, NP, and NPK) compared to the control, whereas the PK treatment did not affect microbial respiration. N-fertilization decreased microbial C uptake, while the microbial growth rate was not affected. Microbial CUE ranged between 0.31 and 0.45, and was 1.3- to 1.4-fold higher in the N-fertilized soils than in the control. The turnover time ranged between 80 and 113 days and was not significantly affected by fertilization. Net primary production (NPP) and the abundance of legumes differed strongly across the treatments, and the fungal:bacterial ratio was very low in all treatments. Structural equation modeling revealed that microbial CUE was exclusively controlled by N fertilization and that neither the abundance of legumes (as a proxy for the quality of the organic matter inputs) nor NPP (as a proxy for C inputs) had an effect on microbial CUE. Our results show that N fertilization did not only decrease microbial respiration, but also microbial C uptake, indicating that less C was intracellularly processed in the N fertilized soils. The reason for reduced C uptake and increased CUE in the N-fertilization treatments is likely an inhibition of oxidative enzymes involved in the degradation of aromatic compounds by N in combination with a reduced energy requirement for microbial N acquisition in the fertilized soils. In conclusion, the study shows that N availability can control soil C cycling by affecting microbial CUE, while plant community-mediated changes in organic matter inputs and P and K availability played no important role for C partitioning of the microbial community in this temperate grassland.

", "keywords": ["FUNGAL", "2. Zero hunger", "106022 Mikrobiologie", "Nitrogen addition", "BACTERIAL", "NITROGEN DEPOSITION", "GROWTH EFFICIENCY", "FOREST FLOOR", "Nutrients", "04 agricultural and veterinary sciences", "15. Life on land", "Stoichiometry", "ORGANIC-MATTER", "RESPIRATION", "106026 \u00d6kosystemforschung", "13. Climate action", "Nutrient limitation", "Microbial growth yield", "106022 Microbiology", "0401 agriculture", " forestry", " and fisheries", "Mean residence time", "STOICHIOMETRIC CONTROLS", "ENZYME-ACTIVITY", "106026 Ecosystem research", "COMMUNITY STRUCTURE"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2016.03.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2016.03.008", "name": "item", "description": "10.1016/j.soilbio.2016.03.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2016.03.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-06-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2016.07.003", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:17:28Z", "type": "Journal Article", "created": "2016-07-08", "title": "Soil extracellular enzyme activities, soil carbon and nitrogen storage under nitrogen fertilization: A meta-analysis", "description": "Abstract Nitrogen (N) fertilization affects the rate of soil organic carbon (SOC) decomposition by regulating extracellular enzyme activities (EEA). Extracellular enzymes have not been represented in global biogeochemical models. Understanding the relationships among EEA and SOC, soil N (TN), and soil microbial biomass carbon (MBC) under N fertilization would enable modeling of the influence of EEA on SOC decomposition. Based on 65 published studies, we synthesized the activities of \u03b1-1,4-glucosidase (AG), \u03b2-1,4-glucosidase (BG), \u03b2- d -cellobiosidase (CBH), \u03b2-1,4-xylosidase (BX), \u03b2-1,4-N-acetyl-glucosaminidase (NAG), leucine amino peptidase (LAP), urease (UREA), acid phosphatase (AP), phenol oxidase (PHO), and peroxidase (PEO) in response to N fertilization. The proxy variables for hydrolytic C acquisition enzymes (C-acq), N acquisition (N-acq), and oxidative decomposition (OX) were calculated as the sum of AG, BG, CBH and BX; AG and LAP; PHO and PEO, respectively. The relationships between response ratios (RRs) of EEA and SOC, TN, or MBC were explored when they were reported simultaneously. Results showed that N fertilization significantly increased CBH, C-acq, AP, BX, BG, AG, and UREA activities by 6.4, 9.1, 10.6, 11.0, 11.2, 12.0, and 18.6%, but decreased PEO, OX and PHO by 6.1, 7.9 and 11.1%, respectively. N fertilization enhanced SOC and TN by 7.6% and 15.3%, respectively, but inhibited MBC by 9.5%. Significant positive correlations were found only between the RRs of C-acq and MBC, suggesting that changes in combined hydrolase activities might act as a proxy for MBC under N fertilization. In contrast with other variables, the RRs of AP, MBC, and TN showed unidirectional trends under different edaphic, environmental, and physiological conditions. Our results provide the first comprehensive set of evidence of how hydrolase and oxidase activities respond to N fertilization in various ecosystems. Future large-scale model projections could incorporate the observed relationship between hydrolases and microbial biomass as a proxy for C acquisition under global N enrichment scenarios in different ecosystems.", "keywords": ["LITTER", "570", "Science & Technology", "MICROBIAL COMMUNITY", "Microbial Biomass Carbon (Mbc)", "Soil Science", "610", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "FOREST", "Meta-analysis", "Nitrogen Fertilization", "METHANE OXIDATION", "ECOSYSTEM", "0401 agriculture", " forestry", " and fisheries", "Soil Organic Carbon (Soc)", "ECOENZYMATIC STOICHIOMETRY", "DEPOSITION", "ELEVATED CO2", "Life Sciences & Biomedicine", "Extracellular Enzyme Activities (Eea)", "GLOBAL PERSPECTIVE", "RESPONSES"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2016.07.003"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2016.07.003", "name": "item", "description": "10.1016/j.soilbio.2016.07.003", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2016.07.003"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-10-01T00:00:00Z"}}, {"id": "10.1023/a:1020368130679", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:18:07Z", "type": "Journal Article", "created": "2003-03-15", "title": "Response Of A Sphagnum Bog Plant Community To Elevated Co2 And N Supply", "description": "The response of plant growth to rising CO2 levels appears todepend on nutrient availability, but it is not known whether the growth of bogplants reacts similarly. We therefore studied the effects of elevatedCO2 in combination with N supply on the growth ofSphagnum mosses and vascular plants in ombrotrophic bogvegetation. Because the growth of Sphagnum is lessnutrient-limited than that of vascular plants, we hypothesized thatSphagnum would benefit from elevated CO2. In ourgreenhouse experiment, peat monoliths (34 cm diameter, 40cm deep) with intact bog vegetation were exposed to ambient (350ppmv) or elevated (560 ppmv) atmosphericCO2 combined with low (no N addition) or high (5 g Nm\u22122 yr\u22121 added) N deposition for twogrowing seasons. Elevated atmospheric CO2 had unexpected deleterious effectson the growth of Sphagnum magellanicum, the dominant Sphagnumspecies. Growth was greatly reduced, particularly in the second growing seasonwhen, regardless of N supply, the mosses looked unhealthy. The negativeCO2 effect was strongest in the warmest months, suggesting a combinedeffect of elevated CO2 and the raised temperatures in the greenhouse.High N deposition favored Rhynchospora alba, which became the dominant vascular plant speciesduring the experiment. Biomass increased more when N supply was high. There wereno significant effects of elevated CO2 on vascular plants, althoughelevated CO2 combined with high N supply tended to increase theaboveground vascular plant biomass. As Sphagnum is the maincarbon-sequestrating species in bogs and rising atmospheric CO2levels are likely to be followed by increases in temperature, there is an urgentneed for further research on the combined effects of elevated CO2 andincreased temperature on Sphagnum growth in bog ecosystems.", "keywords": ["Sphagnum magellanicum", "Carbon dioxide", "13. Climate action", "Rhynchospora alba", "Climate change", "Greenhouse experiment", "15. Life on land", "Nitrogen deposition"]}, "links": [{"href": "https://doi.org/10.1023/a:1020368130679"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1023/a:1020368130679", "name": "item", "description": "10.1023/a:1020368130679", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1023/a:1020368130679"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2002-09-01T00:00:00Z"}}, {"id": "10.1029/2002gb001886", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:18:10Z", "type": "Journal Article", "created": "2003-06-16", "title": "Effects Of Elevated Co2 And N Deposition On Ch4 Emissions From European Mires", "description": "

Methane fluxes were measured at five sites representing oligotrophic peatlands along a European transect. Five study plots were subjected to elevated CO2 concentration (560 ppm), and five plots to NH4NO3 (3 or 5 g N yr\uffe2\uff88\uff921). The CH4 emissions from the control plots correlated in most cases with the soil temperatures. The depth of the water table, the pH, and the DOC, N and SO4 concentrations were only weakly correlated with the CH4 emissions. The elevated CO2 treatment gave nonsignificantly higher CH4 emissions at three sites and lower at two sites. The N treatment resulted in higher methane emissions at three sites (nonsignificant). At one site, the CH4 fluxes of the N\uffe2\uff80\uff90treatment plots were significantly lower than those of the control plots. These results were not in agreement with our hypotheses, nor with the results obtained in some earlier studies. However, the results are consistent with the results of the vegetation analyses, which showed no significant treatment effects on species relationships or biomass production.

", "keywords": ["northern peatlands", "methane emissions", "atmospheric carbon-dioxide", "temperature", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water", "forest soils", "nitrogen deposition", "boreal mire", "13. Climate action", "raised co2", "0401 agriculture", " forestry", " and fisheries", "bog vegetation", "water-table", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1029/2002gb001886"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Biogeochemical%20Cycles", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2002gb001886", "name": "item", "description": "10.1029/2002gb001886", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2002gb001886"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2003-06-01T00:00:00Z"}}, {"id": "10.1029/2008jg000801", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:18:11Z", "type": "Journal Article", "created": "2009-04-16", "title": "Alteration Of Belowground Carbon Dynamics By Nitrogen Addition In Southern California Mixed Conifer Forests", "description": "

Nitrogen deposition rates in southern California are the highest in North America and have had substantial effects on ecosystem functioning. We document changes in the belowground C cycle near ponderosa pine trees experiencing experimental nitrogen (N) addition (50 and 150 kg N ha\uffe2\uff88\uff921a\uffe2\uff88\uff921as slow release urea since 1997) at two end\uffe2\uff80\uff90member sites along a pollution gradient in the San Bernardino Mountains, California. Despite considerable differences in N deposition between the two sites, we observed parallel changes in microbial substrate use and soil enzyme activity with N addition. \uffce\uff9414C measurements indicate that the mean age of C respired by the Oa horizon declined 10\uffe2\uff80\uff9315 years with N addition at both sites. N addition caused an increase in cellulolytic enzyme activity at the polluted site and a decrease in ligninolytic enzyme activity at the unpolluted site. Given the likely differences in lignin and cellulose ages, this could explain the difference in the age of microbial respiration with N addition. Measurements of fractionated soil organic matter did not show the same magnitude of changes in response to N addition as were observed for respired C. This lesser response was likely because the soils are mostly composed of C having turnover times of decades to centuries, and 9 years of N amendment were not enough to affect this material. Consequently, \uffce\uff9414C of respired CO2provided a more sensitive indicator of the effects of N addition than other methods. Results suggest that enhanced N deposition alone may not result in increased soil C storage in xeric ecosystems.

", "keywords": ["13. Climate action", "belowground biomass", "North America", "San Bernardino", "Coniferophyta", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "deposition", "nitrogen", "California", "United States", "enzyme activity"], "contacts": [{"organization": "Nowinski, Nicole S, Trumbore, Susan E, Jimenez, Gloria, Fenn, Mark E,", "roles": ["creator"]}]}, "links": [{"href": "https://escholarship.org/content/qt5rp5x2qk/qt5rp5x2qk.pdf"}, {"href": "https://doi.org/10.1029/2008jg000801"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Biogeosciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2008jg000801", "name": "item", "description": "10.1029/2008jg000801", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2008jg000801"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-04-17T00:00:00Z"}}, {"id": "10.1038/ngeo844", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:18:19Z", "type": "Journal Article", "created": "2010-04-25", "title": "Reduction of forest soil respiration in response to nitrogen deposition", "description": "The use of fossil fuels and fertilizers has increased the amount of biologically reactive nitrogen in the atmosphere over the past century. As a consequence, forests in industrialized regions have experienced greater rates of nitrogen deposition in recent decades. This unintended fertilization has stimulated forest growth, but has also affected soil microbial activity, and thus the recycling of soil carbon and nutrients. A meta-analysis suggests that nitrogen deposition impedes organic matter decomposition, and thus stimulates carbon sequestration, in temperate forest soils where nitrogen is not limiting microbial growth. The concomitant reduction in soil carbon emissions is substantial, and equivalent in magnitude to the amount of carbon taken up by trees owing to nitrogen fertilization. As atmospheric nitrogen levels continue to rise, increased nitrogen deposition could spread to older, more weathered soils, as found in the tropics; however, soil carbon cycling in tropical forests cannot yet be assessed", "keywords": ["[SDE] Environmental Sciences", "2. Zero hunger", "570", "EUROPEAN FORESTS", "NORTHERN HARDWOOD FORESTS", "ORGANIC-MATTER DECOMPOSITION", "MICROBIAL BIOMASS", "04 agricultural and veterinary sciences", "15. Life on land", "LITTER DECOMPOSITION", "BOREAL FOREST", "TEMPERATE FOREST", "Soils Nitrogen content", "CARBON SEQUESTRATION", "13. Climate action", "[SDE]Environmental Sciences", "SDG 13 - Climate Action", "0401 agriculture", " forestry", " and fisheries", "Soil aeration Environmental aspects", "HUMIC SUBSTANCES", "Forest ecology", "ATMOSPHERIC NITRATE DEPOSITION"]}, "links": [{"href": "https://doi.org/10.1038/ngeo844"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Geoscience", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/ngeo844", "name": "item", "description": "10.1038/ngeo844", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/ngeo844"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-04-25T00:00:00Z"}}, {"id": "10.1039/c8en00501j", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:18:30Z", "type": "Journal Article", "created": "2018-08-29", "title": "On the application of spectral corrections to particle flux measurements", "description": "

An altered empirical method to estimate attenuation correction factors in particle flux measurements.

", "keywords": ["SCALAR SIMILARITY", "Environmental sciences", "Physical sciences", "EDDY COVARIANCE METHOD", "DEPOSITION VELOCITIES", "AEROSOL FLUXES", "13. Climate action", "TURBULENCE", "Urbanisation", "SCOTS PINE FOREST", "EXCHANGE", "SOUTHERN FINLAND", "7. Clean energy"]}, "links": [{"href": "http://pubs.rsc.org/en/content/articlepdf/2018/EN/C8EN00501J"}, {"href": "https://doi.org/10.1039/c8en00501j"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%3A%20Nano", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1039/c8en00501j", "name": "item", "description": "10.1039/c8en00501j", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1039/c8en00501j"}, {"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": "10.1046/j.1365-2486.2002.00535.x", "type": "Feature", "geometry": null, "properties": {"license": "Restricted", "updated": "2026-07-27T16:18:34Z", "type": "Journal Article", "created": "2003-03-11", "title": "Potassium Limits Potential Growth Of Bog Vegetation Under Elevated Atmospheric Co2 And N Deposition", "description": "Abstract

The free air carbon dioxide enrichment (FACE) and N\uffc2\uffa0deposition experiments on four ombrotrophic bogs in Finland, Sweden, the Netherlands and Switzerland, revealed that after three years of treatment: (1) elevated atmospheric CO2concentration had no significant effect on the biomass growth ofSphagnumand vascular species; and (2) increased N\uffc2\uffa0deposition reduced Sphagnum growth, because it increased the cover of vascular plants and the tall mossPolytrichum strictum, while vascular plant biomass growth was not affected. This paper focuses on water chemistry, plant nutrient content, and litter decomposition rates. Potassium limitation, or low supply of K\uffc2\uffa0and P, may have prevented a significant increase ofSphagnumgrowth under elevated CO2and N\uffc2\uffa0deposition. Vascular plant growth under elevated CO2and N\uffc2\uffa0deposition was also limited by K, or by K\uffc2\uffa0in combination with P\uffc2\uffa0or N\uffc2\uffa0(N in CO2experiment). Elevated CO2and N\uffc2\uffa0deposition had no effect on decomposition rates ofSphagnumand vascular plant litter. Aside from a possible effect of N\uffc2\uffa0deposition on light competition between species, we expect that elevated atmospheric CO2and N\uffc2\uffa0deposition concentrations will not affectSphagnumand vascular plant growth in bogs of north\uffe2\uff80\uff90west Europe due to K\uffe2\uff80\uff90, or K\uffc2\uffa0in combination with N\uffe2\uff80\uff90 or P\uffe2\uff80\uff90, limited growth. For the same reason we expect no effect of elevated CO2and N\uffc2\uffa0deposition on litter decomposition. Net primary production of raised ombrotrophic bogs that are at or close to steady state, is regulated by input of nutrients through atmospheric deposition. Therefore, we hypothesize that the expected increase of plant growth under elevated CO2and N\uffc2\uffa0deposition is diminished by current levels of K\uffc2\uffa0(and to some extent P\uffc2\uffa0and N) in atmospheric deposition.

", "keywords": ["0106 biological sciences", "Sphagnum", "Carbon dioxide", "13. Climate action", "Bog", "Litter decomposition", "Nutrient limited growth", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrogen deposition", "01 natural sciences", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1046/j.1365-2486.2002.00535.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.1365-2486.2002.00535.x", "name": "item", "description": "10.1046/j.1365-2486.2002.00535.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1046/j.1365-2486.2002.00535.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2002-09-30T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2004.00737.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:19:32Z", "type": "Journal Article", "created": "2004-12-24", "title": "Simulated Chronic No3\u2212Deposition Reduces Soil Respiration In Northern Hardwood Forests", "description": "Abstract

Chronic N additions to forest ecosystems can enhance soil N availability, potentially leading to reduced C allocation to root systems. This in turn could decrease soil CO2 efflux. We measured soil respiration during the first, fifth, sixth and eighth years of simulated atmospheric NO3\uffe2\uff88\uff92 deposition (3\uffe2\uff80\uff83g\uffe2\uff80\uff83N\uffe2\uff80\uff83m\uffe2\uff88\uff922\uffe2\uff80\uff83yr\uffe2\uff88\uff921) to four sugar maple\uffe2\uff80\uff90dominated northern hardwood forests in Michigan to assess these possibilities. During the first year, soil respiration rates were slightly, but not significantly, higher in the NO3\uffe2\uff88\uff92\uffe2\uff80\uff90amended plots. In all subsequent measurement years, soil respiration rates from NO3\uffe2\uff88\uff92\uffe2\uff80\uff90amended soils were significantly depressed. Soil temperature and soil matric potential were measured concurrently with soil respiration and used to develop regression relationships for predicting soil respiration rates. Estimates of growing season and annual soil CO2 efflux made using these relationships indicate that these C fluxes were depressed by 15% in the eighth year of chronic NO3\uffe2\uff88\uff92 additions. The decrease in soil respiration was not due to reduced C allocation to roots, as root respiration rates, root biomass, and root turnover were not significantly affected by N additions. Aboveground litter also was unchanged by the 8 years of treatment. Of the remaining potential causes for the decline in soil CO2 efflux, reduced microbial respiration appears to be the most likely possibility. Documented reductions in microbial biomass and the activities of extracellular enzymes used for litter degradation on the NO3\uffe2\uff88\uff92\uffe2\uff80\uff90amended plots are consistent with this explanation.

", "keywords": ["Nitrogen Fertilization", "Soil CO 2 Efflux", "Geology and Earth Sciences", "Science", "Atmospheric Nitrate Deposition", "Ecology and Evolutionary Biology", "Root Respiration", "0401 agriculture", " forestry", " and fisheries", "Temperature and Moisture Effects", "04 agricultural and veterinary sciences", "15. Life on land", "Root Biomass"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2486.2004.00737.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": "10.1111/j.1365-2486.2004.00737.x", "name": "item", "description": "10.1111/j.1365-2486.2004.00737.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2004.00737.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-05-07T00:00:00Z"}}, {"id": "10.1088/1748-9326/ab239c", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:19:01Z", "type": "Journal Article", "created": "2019-05-30", "title": "Global soil acidification impacts on belowground processes", "description": "Abstract

With continuous nitrogen (N) enrichment and sulfur (S) deposition, soil acidification has accelerated and become a global environmental issue. However, a full understanding of the general pattern of ecosystem belowground processes in response to soil acidification due to the impacting factors remains elusive. We conducted a meta-analysis of soil acidification impacts on belowground functions using 304 observations from 49 independent studies, mainly including soil cations, soil nutrient, respiration, root and microbial biomass. Our results show that acid addition significantly reduced soil pH by 0.24 on average, with less pH decrease in forest than non-forest ecosystems. The response ratio of soil pH was positively correlated with site precipitation and temperature, but negatively with initial soil pH. Soil base cations (Ca2+, Mg2+, Na+) decreased while non-base cations (Al3+, Fe3+) increased with soil acidification. Soil respiration, fine root biomass, microbial biomass carbon and nitrogen were significantly reduced by 14.7%, 19.1%, 9.6% and 12.1%, respectively, under acid addition. These indicate that soil carbon processes are sensitive to soil acidification. Overall, our meta-analysis suggests a strong negative impact of soil acidification on belowground functions, with the potential to suppress soil carbon emission. It also arouses our attention to the toxic effects of soil ions on terrestrial ecosystems.

", "keywords": ["Biomass (ecology)", "Organic chemistry", "Soil pH", "soil respiration", "Environmental technology. Sanitary engineering", "Agricultural and Biological Sciences", "Engineering", "Terrestrial ecosystem", "Soil water", "Climate change", "GE1-350", "TD1-1066", "Ecology", "Physics", "Soil Water Retention", "Ocean acidification", "Q", "Life Sciences", "Soil respiration", "04 agricultural and veterinary sciences", "Soil carbon", "6. Clean water", "Chemistry", "Physical Sciences", "Environmental chemistry", "soil cations", "microbes", "Mechanics and Transport in Unsaturated Soils", "Nitrogen", "Science", "QC1-999", "Materials Science", "Soil Science", "Thermal Effects on Soil", "Environmental science", "Biomaterials", "soil pH", "acid deposition", "Soil Carbon Sequestration", "Biology", "Soil acidification", "Ecosystem", "Civil and Structural Engineering", "Applications of Clay Nanotubes in Various Fields", "Soil science", "Soil organic matter", "Soil Fertility", "15. Life on land", "Soil biodiversity", "Agronomy", "meta-analysis", "Environmental sciences", "Soil Hydraulic Properties", "13. Climate action", "FOS: Biological sciences", "Bulk soil", "0401 agriculture", " forestry", " and fisheries", "Soil Carbon Dynamics and Nutrient Cycling in Ecosystems", "Nutrient"]}, "links": [{"href": "https://doi.org/10.1088/1748-9326/ab239c"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Research%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1088/1748-9326/ab239c", "name": "item", "description": "10.1088/1748-9326/ab239c", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1088/1748-9326/ab239c"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-07-01T00:00:00Z"}}, {"id": "10.1088/1748-9326/abe25c", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:19:02Z", "type": "Journal Article", "created": "2021-02-03", "title": "Dominant contribution of nitrogen compounds in precipitation chemistry in the Lake Victoria catchment (East Africa)", "description": "Abstract

This work provides a complete chemical characterization of rains collected in the tropical rural site of Mbita (Kenya) on the shores of Lake Victoria (annual rainfall 1259.3 mm). We present a wet nitrogen deposition budget including inorganic and organic dissolved nitrogen in relation with atmospheric sources of gases and particles, precipitation rate and air mass transport. A unique 2 yr monitoring data set (2017\uffe2\uff80\uff932019), providing 183 rain samples was collected and analyzed according to international standards (WMO/GAW). Considering that precipitation represents the largest contributor of water to the Lake Victoria (80%), this study gives new insights in the seasonality of nutrients wet deposition (WD) inputs in the unique natural resource represented by Lake Victoria and its catchment. Four main contributions to the chemical composition of precipitation, were identified: (a) a 28% terrigenous contribution related to crustal and biomass sources, (b) a 14% marine contribution related to Indian ocean air masses intrusion, (c) a 15% organic contribution due to volatile organic carbon emissions from biomass burning and vegetation and (d) a predominant nitrogenous contribution of 39% due to livestock and fertilizers, biomass burning and neighboring agricultural fires. Ammonium and nitrate volume weighed mean concentrations are 36.75 and 8.88 \uffce\uffbceq l\uffe2\uff88\uff921, respectively. Rain in Mbita is alkaline (pH = 5.8) highlighting neutralization by heterogeneous chemistry. Total nitrogen WD is 8.54 kgN ha\uffe2\uff88\uff921 yr\uffe2\uff88\uff921, 58\uffe2\uff80\uff89760 tN yr\uffe2\uff88\uff921 for the entire lake, with 26% attributed to dissolved organic nitrogen. A total atmospheric deposition of 15 kgN ha\uffe2\uff88\uff921 yr\uffe2\uff88\uff921 is estimated taking into account dry deposition estimate from literature, showing that the Lake Victoria ecosystem is exposed to eutrophication. An extensive and regular monitoring of wet and dry nitrogen deposition is highly recommended both in-shore and off-shore to help improving the efficiency of nitrogen use in agricultural areas and reduce nitrogen losses around Lake Victoria.

", "keywords": ["[SDE] Environmental Sciences", "Science", "Physics", "QC1-999", "Q", "15. Life on land", "Kenya", "Environmental technology. Sanitary engineering", "01 natural sciences", "6. Clean water", "Environmental sciences", "nitrogen wet deposition budget", "precipitation chemistry", "13. Climate action", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "wet deposition", "GE1-350", "14. Life underwater", "TD1-1066", "Lake Victoria basin", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1088/1748-9326/abe25c"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Research%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1088/1748-9326/abe25c", "name": "item", "description": "10.1088/1748-9326/abe25c", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1088/1748-9326/abe25c"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-04-01T00:00:00Z"}}, {"id": "10.1093/jxb/erad421", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:19:05Z", "type": "Journal Article", "created": "2023-10-26", "title": "Location: root architecture structures rhizosphere microbial associations", "description": "Abstract

Root architectural phenotypes are promising targets for crop breeding, but root architectural effects on microbial associations in agricultural fields are not well understood. Architecture determines the location of microbial associations within root systems, which, when integrated with soil vertical gradients, determines the functions and the metabolic capability of rhizosphere microbial communities. We argue that variation in root architecture in crops has important implications for root exudation, microbial recruitment and function, and the decomposition and fate of root tissues and exudates. Recent research has shown that the root microbiome changes along root axes and among root classes, that root tips have a unique microbiome, and that root exudates change within the root system depending on soil physicochemical conditions. Although fresh exudates are produced in larger amounts in root tips, the rhizosphere of mature root segments also plays a role in influencing soil vertical gradients. We argue that more research is needed to understand specific root phenotypes that structure microbial associations and discuss candidate root phenotypes that may determine the location of microbial hotspots within root systems with relevance to agricultural systems.

Nitrogen (N) saturation hypothesis suggests that when an ecosystem reaches N\uffe2\uff80\uff90saturation, continued N input will cause increased N leaching, nitrous oxide (N2O) emission, and N mineralization and nitrification rates. It also suggests that a different element will become the main limiting factor when N saturation has been reached. Although this hypothesis has been tested in temperate forests, whether they can be directly applied to N\uffe2\uff80\uff90saturated tropical forests remain poorly addressed.

To test this hypothesis, soil inorganic N, soil N mineralization and nitrification rate, soil N2O emission rate and nitrate () leaching rate were measured in an N\uffe2\uff80\uff90saturated old\uffe2\uff80\uff90growth tropical forest in southern China, after 6\uffc2\uffa0years of N and P addition. We hypothesized that N addition would stimulate further N saturation, but P addition might alleviate N saturation.

As expected, our results showed that six continuous years of experimental N addition did cause further N saturation, which was indicated by significant increases in soil inorganic N concentration, N2O emission and nitrate () leaching. However, in contrast to our expectations, N addition significantly decreased in\uffc2\uffa0situ rates of net N mineralization and nitrification, which could be related to associated changes in enzyme activity and microbial community composition. On the other hand, P addition mitigated N saturation, as expected. Soil inorganic N concentration, N2O emission and leaching decreased significantly after P addition, but the net rates of N mineralization and nitrification were significantly increased.

Our results provide a new understanding of the N saturation hypothesis, suggesting that the effects of long\uffe2\uff80\uff90term N deposition on net N mineralization and nitrification rates in N\uffe2\uff80\uff90saturated tropical forests can be negative and that P addition can alleviate N saturation in such tropical systems.

", "keywords": ["China", "Nitrogen mineralization and nitrification", "Tropical forest", "Nitrogen saturation", "13. Climate action", "Phosphorus addition", "0401 agriculture", " forestry", " and fisheries", "N 2 O emission", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrogen deposition"]}, "links": [{"href": "https://doi.org/10.1111/1365-2435.12475"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Functional%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/1365-2435.12475", "name": "item", "description": "10.1111/1365-2435.12475", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/1365-2435.12475"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-06-06T00:00:00Z"}}, {"id": "10.1111/1365-2435.14178", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:19:16Z", "type": "Journal Article", "created": "2022-09-10", "title": "Nitrogen loading enhances phosphorus limitation in terrestrial ecosystems with implications for soil carbon cycling", "description": "Abstract

Increased human\uffe2\uff80\uff90derived nitrogen (N) loading in terrestrial ecosystems has caused widespread ecosystem\uffe2\uff80\uff90level phosphorus (P) limitation. In response, plants and soil micro\uffe2\uff80\uff90organisms adopt a series of P\uffe2\uff80\uff90acquisition strategies to offset N loading\uffe2\uff80\uff90induced P limitation. Many of these strategies impose costs on carbon (C) allocation by plants and soil micro\uffe2\uff80\uff90organisms; however, it remains unclear how P\uffe2\uff80\uff90acquisition strategies affect soil C cycling. Herein, we review the literature on the effects of N loading on P limitation and outline a conceptual overview of how plant and microbial P\uffe2\uff80\uff90acquisition strategies may affect soil organic carbon (SOC) stabilization and decomposition in terrestrial ecosystems.

Excessive input of N significantly enhances plant biomass production, soil acidification, and produces plant litterfall with high N/P ratios, which can aggravate ecosystem\uffe2\uff80\uff90level P limitation.

Long\uffe2\uff80\uff90term N loading can cause plants and soil micro\uffe2\uff80\uff90organisms to alter their functional traits to increase P acquisition. Plants can release carboxylate exudates and phosphatases, modify root morphological traits, facilitate the formation of symbiotic associations with mycorrhizal fungi and stimulate the abundance of P\uffe2\uff80\uff90mineralizing and P\uffe2\uff80\uff90solubilizing micro\uffe2\uff80\uff90organisms. Releasing carboxylate exudates and phosphatases could accelerate SOC decomposition, whereas changing symbiotic associations and root morphological traits (e.g. an increase in fine root length) may contribute to higher SOC stabilization. Increased relative abundances of P\uffe2\uff80\uff90mineralizing and P\uffe2\uff80\uff90solubilizing bacteria can accelerate P mining and SOC decay, which may decrease microbial C use efficiency and subsequently lower SOC sequestration.

The trade\uffe2\uff80\uff90offs between different plant P\uffe2\uff80\uff90acquisition strategies under N loading should be among future research priorities due to their cascading impacts on soil C storage. Quantifying ecosystem thresholds for P adaption to increased N loading is important because P\uffe2\uff80\uff90acquisition strategies are effective when N loading is below the N threshold. Moreover, understanding the response of P\uffe2\uff80\uff90acquisition strategies at different levels of native soil N availability could provide insight to divergent P\uffe2\uff80\uff90acquisition strategies across sites and ecosystems. Altogether, P\uffe2\uff80\uff90acquisition strategies should be explicitly considered in Earth System Models to generate more realistic predictions of the effects of N loading on soil C cycling.

Read the free Plain Language Summary for this article on the Journal blog.

The Early Bronze Age ceramic collection found into the caves of La Llana and El Toral III in Asturias (Spain) presents common decoration such as that found in the centre of Cantabrian Spain from the same period, which resembles others found in the Ebro Valley and Atlantic Europe. Therefore, the main objective of this study it is to identify the raw material origin and understand the pottery production process during the Early Bronze Age in the Cantabrian region. A methodological approach based on the chemical and mineralogical analysis of vessels and experimentally fired clay samples collected all over the centre of this region was developed. Furthermore, the post\u2010depositional processes affecting the sherds\u2019 composition was evaluated by employing the rare earth elements as markers. The results showed that the studied assemblage has important similarities with the raw materials of the surrounding area, which supports the hypothesis of a regional mobility.

", "keywords": ["Human mobility", "Pottery", "Rare earth element", "Chemical-mineralogical characterisation", "Post-depositional processes", "0601 history and archaeology", "06 humanities and the arts", "01 natural sciences", "Raw material", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1111/arcm.12605"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Archaeometry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/arcm.12605", "name": "item", "description": "10.1111/arcm.12605", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/arcm.12605"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-09-02T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2005.01001.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:19:33Z", "type": "Journal Article", "created": "2005-08-19", "title": "Soil Organic Matter And Litter Chemistry Response To Experimental N Deposition In Northern Temperate Deciduous Forest Ecosystems", "description": "Abstract

The effects of atmospheric nitrogen (N) deposition on organic matter decomposition vary with the biochemical characteristics of plant litter. At the ecosystem\uffe2\uff80\uff90scale, net effects are difficult to predict because various soil organic matter (SOM) fractions may respond differentially. We investigated the relationship between SOM chemistry and microbial activity in three northern deciduous forest ecosystems that have been subjected to experimental N addition for 2 years. Extractable dissolved organic carbon (DOC), DOC aromaticity, C\uffe2\uff80\uff83:\uffe2\uff80\uff83N ratio, and functional group distribution, measured by Fourier transform infrared spectra (FTIR), were analyzed for litter and SOM. The largest biochemical changes were found in the sugar maple\uffe2\uff80\uff93basswood (SMBW) and black oak\uffe2\uff80\uff93white oak (BOWO) ecosystems. SMBW litter from the N addition treatment had less aromaticity, higher C\uffe2\uff80\uff83:\uffe2\uff80\uff83N ratios, and lower saturated carbon, lower carbonyl carbon, and higher carboxylates than controls; BOWO litter showed opposite trends, except for carbonyl and carboxylate contents. Litter from the sugar maple\uffe2\uff80\uff93red oak (SMRO) ecosystem had a lower C\uffe2\uff80\uff83:\uffe2\uff80\uff83N ratio, but no change in DOC aromaticity. For SOM, the C\uffe2\uff80\uff83:\uffe2\uff80\uff83N ratio increased with N addition in SMBW and SMRO ecosystems, but decreased in BOWO; N addition did not affect the aromaticity of DOC extracted from mineral soil. All ecosystems showed increases in extractable DOC from both litter and soil in response to N treatment. The biochemical changes are consistent with the divergent microbial responses observed in these systems. Extracellular oxidative enzyme activity has declined in the BOWO and SMRO ecosystems while activity in the SMBW ecosystem, particularly in the litter horizon, has increased. In all systems, enzyme activities associated with the hydrolysis and oxidation of polysaccharides have increased. At the ecosystem scale, the biochemical characteristics of the dominant litter appear to modulate the effects of N deposition on organic matter dynamics.

", "keywords": ["Litter Chemistry", "Geology and Earth Sciences", "13. Climate action", "Soil Organic Matter", "Science", "Ecology and Evolutionary Biology", "0401 agriculture", " forestry", " and fisheries", "Nitrogen Deposition", "04 agricultural and veterinary sciences", "15. Life on land", "Dissolved Organic Matter", "Extracellular Enzyme Activity"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2486.2005.01001.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": "10.1111/j.1365-2486.2005.01001.x", "name": "item", "description": "10.1111/j.1365-2486.2005.01001.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2005.01001.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-07-19T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2009.02082.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:19:36Z", "type": "Journal Article", "created": "2009-09-24", "title": "Turnover Of Labile And Recalcitrant Soil Carbon Differ In Response To Nitrate And Ammonium Deposition In An Ombrotrophic Peatland", "description": "Abstract

The effects of 4 years of simulated nitrogen deposition, as nitrate (NO3\uffe2\uff88\uff92) and ammonium (NH4+), on microbial carbon turnover were studied in an ombrotrophic peatland. We investigated the mineralization of simple forms of carbon using MicroResp\uffe2\uff84\uffa2 measurements (a multiple substrate induced respiration technique) and the activities of four soil enzymes involved in the decomposition of more complex forms of carbon or in nutrient acquisition: N\uffe2\uff80\uff90acetyl\uffe2\uff80\uff90glucosaminidase (NAG), cellobiohydrolase (CBH), acid phosphatase (AP), and phenol oxidase (PO). The potential mineralization of labile forms of carbon was significantly enhanced at the higher N additions, especially with NH4+ amendments, while potential enzyme activities involved in breakdown of more complex forms of carbon or nutrient acquisition decreased slightly (NAG and CBH) or remained unchanged (AP and PO) with N amendments. This study also showed the importance of distinguishing between NO3\uffe2\uff88\uff92 and NH4+ amendments, as their impact often differed. It is possible that the limited response on potential extracellular enzyme activity is due to other factors, such as limited exposure to the added N in the deeper soil or continued suboptimal functioning of the enzymes due to the low pH, possibly via the inhibitory effect of low phenol oxidase activity.

", "keywords": ["nitrogen deposition", "Whim bog", "substrate-induced respiration", "0401 agriculture", " forestry", " and fisheries", "peatland", "Soil Biology", "04 agricultural and veterinary sciences", "Biological Sciences", "carbon turnover", "15. Life on land", "Environmental Sciences", "enzyme activity"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2486.2009.02082.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": "10.1111/j.1365-2486.2009.02082.x", "name": "item", "description": "10.1111/j.1365-2486.2009.02082.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2009.02082.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-07-01T00:00:00Z"}}, {"id": "10.1111/nph.17065", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:19:49Z", "type": "Journal Article", "created": "2020-11-05", "title": "Soil biodiversity enhances the persistence of legumes under climate change", "description": "Summary

Global environmental change poses threats to plant and soil biodiversity. Yet, whether soil biodiversity loss can further influence plant community\uffe2\uff80\uff99s response to global change is still poorly understood.

We created a gradient of soil biodiversity using the dilution\uffe2\uff80\uff90to\uffe2\uff80\uff90extinction approach, and investigated the effects of soil biodiversity loss on plant communities during and following manipulations simulating global change disturbances in experimental grassland microcosms.

Grass and herb biomass was decreased by drought and promoted by nitrogen deposition, and a fast recovery was observed following disturbances, independently of soil biodiversity loss. Warming promoted herb biomass during and following disturbance only when soil biodiversity was not reduced. However, legumes biomass was suppressed by these disturbances, and there were more detrimental effects with reduced soil biodiversity. Moreover, soil biodiversity loss suppressed the recovery of legumes following these disturbances. Similar patterns were found for the response of plant diversity. The changes in legumes might be partly attributed to the loss of mycorrhizal soil mutualists.

Our study shows that soil biodiversity is crucial for legume persistence and plant diversity maintenance when faced with environmental change, highlighting the importance of soil biodiversity as a potential buffering mechanism for plant diversity and community composition in grasslands.

", "keywords": ["2. Zero hunger", "0301 basic medicine", "570", "0303 health sciences", "warming", "Climate Change", "Fabaceae", "arbuscular mycorrhizal fungi", "Biodiversity", "drought", "plant\u2013soil interactions", "500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie", "15. Life on land", "Grassland", "nitrogen deposition", "Soil", "03 medical and health sciences", "biodiversity loss", "13. Climate action", "Biomass", "dilution-to-extinction approach", "Soil Microbiology"]}, "links": [{"href": "https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.17065"}, {"href": "https://doi.org/10.1111/nph.17065"}, {"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.17065", "name": "item", "description": "10.1111/nph.17065", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/nph.17065"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-12-08T00:00:00Z"}}, {"id": "10.1111/nph.18264", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:19:49Z", "type": "Journal Article", "created": "2022-06-10", "title": "Biotic and abiotic controls of nitrogen fixation in cyanobacteria\u2013moss associations", "description": "Summary

Most mosses are colonized by nitrogen (N)\uffe2\uff80\uff90fixing cyanobacteria. This discovery is relatively recent, which can explain the large knowledge gaps the field is now tackling. For instance, while we have a good understanding of the abiotic controls (e.g. nutrient availability, increased temperature), we still do not know much about the biotic controls of N2 fixation in mosses. I propose here that we should endeavour to position moss\uffe2\uff80\uff93cyanobacteria associations along the mutualism\uffe2\uff80\uff93parasitism continuum under varying abiotic conditions (e.g. nutrient availability). This would finally unravel the nature of the relationship between the partners and will be a big leap in our understanding of the evolution of plant\uffe2\uff80\uff93bacteria interactions using moss\uffe2\uff80\uff93cyanobacteria associations as a model system.Nitrogen-induced suppression of lignin-modifying enzyme activity contributes to soil carbon sequestration.

", "keywords": ["CHANGING ENVIRONMENT", "570", "550", "Nitrogen", "LITTER DECOMPOSITION", "Soil", "Bacterial Proteins", "Research Articles", "Ecosystem", "Soil Microbiology", "2. Zero hunger", "Science & Technology", "Bacteria", "HETEROTROPHIC ACTIVITY", "04 agricultural and veterinary sciences", "15. Life on land", "Carbon", "Enzymes", "N DEPOSITION", "Multidisciplinary Sciences", "ORGANIC-MATTER", "BIOCHEMICAL-COMPOSITION", "TEMPERATE FOREST", "13. Climate action", "SUBTROPICAL FORESTS", "Science & Technology - Other Topics", "0401 agriculture", " forestry", " and fisheries", "ATMOSPHERIC NITRATE DEPOSITION", "SIZE FRACTIONS", "CBIO"]}, "links": [{"href": "https://doi.org/10.1126/sciadv.aaq1689"}, {"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.aaq1689", "name": "item", "description": "10.1126/sciadv.aaq1689", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1126/sciadv.aaq1689"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-08-03T00:00:00Z"}}, {"id": "10.1371%2fjournal.pone.0060441", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:20:11Z", "type": "Journal Article", "created": "2013-03-27", "title": "Nitrogen Addition And Warming Independently Influence The Belowground Micro-Food Web In A Temperate Steppe", "description": "Climate warming and atmospheric nitrogen (N) deposition are known to influence ecosystem structure and functioning. However, our understanding of the interactive effect of these global changes on ecosystem functioning is relatively limited, especially when it concerns the responses of soils and soil organisms. We conducted a field experiment to study the interactive effects of warming and N addition on soil food web. The experiment was established in 2006 in a temperate steppe in northern China. After three to four years (2009-2010), we found that N addition positively affected microbial biomass and negatively influenced trophic group and ecological indices of soil nematodes. However, the warming effects were less obvious, only fungal PLFA showed a decreasing trend under warming. Interestingly, the influence of N addition did not depend on warming. Structural equation modeling analysis suggested that the direct pathway between N addition and soil food web components were more important than the indirect connections through alterations in soil abiotic characters or plant growth. Nitrogen enrichment also affected the soil nematode community indirectly through changes in soil pH and PLFA. We conclude that experimental warming influenced soil food web components of the temperate steppe less than N addition, and there was little influence of warming on N addition effects under these experimental conditions.", "keywords": ["China", "Food Chain", "Nematoda", "Nitrogen", "Science", "deposition", "Models", " Biological", "northern china", "Soil", "soil nematodes", "Animals", "Biomass", "organic-matter", "global change", "Phospholipids", "Soil Microbiology", "2. Zero hunger", "elevated co2", "Analysis of Variance", "species composition", "Q", "R", "Temperature", "04 agricultural and veterinary sciences", "Plants", "15. Life on land", "13. Climate action", "international", "climate-change manipulations", "plant-communities", "Medicine", "0401 agriculture", " forestry", " and fisheries", "community structure", "Research Article"]}, "links": [{"href": "https://doi.org/10.1371%2fjournal.pone.0060441"}, {"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%2fjournal.pone.0060441", "name": "item", "description": "10.1371%2fjournal.pone.0060441", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1371%2fjournal.pone.0060441"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-03-27T00:00:00Z"}}, {"id": "10.1371/journal.pone.0060441", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:20:12Z", "type": "Journal Article", "created": "2013-03-27", "title": "Nitrogen Addition And Warming Independently Influence The Belowground Micro-Food Web In A Temperate Steppe", "description": "Climate warming and atmospheric nitrogen (N) deposition are known to influence ecosystem structure and functioning. However, our understanding of the interactive effect of these global changes on ecosystem functioning is relatively limited, especially when it concerns the responses of soils and soil organisms. We conducted a field experiment to study the interactive effects of warming and N addition on soil food web. The experiment was established in 2006 in a temperate steppe in northern China. After three to four years (2009-2010), we found that N addition positively affected microbial biomass and negatively influenced trophic group and ecological indices of soil nematodes. However, the warming effects were less obvious, only fungal PLFA showed a decreasing trend under warming. Interestingly, the influence of N addition did not depend on warming. Structural equation modeling analysis suggested that the direct pathway between N addition and soil food web components were more important than the indirect connections through alterations in soil abiotic characters or plant growth. Nitrogen enrichment also affected the soil nematode community indirectly through changes in soil pH and PLFA. We conclude that experimental warming influenced soil food web components of the temperate steppe less than N addition, and there was little influence of warming on N addition effects under these experimental conditions.", "keywords": ["China", "Food Chain", "Nematoda", "Nitrogen", "Science", "deposition", "Models", " Biological", "northern china", "Soil", "soil nematodes", "Animals", "Biomass", "organic-matter", "global change", "Phospholipids", "Soil Microbiology", "2. Zero hunger", "elevated co2", "Analysis of Variance", "species composition", "Q", "R", "Temperature", "04 agricultural and veterinary sciences", "Plants", "15. Life on land", "13. Climate action", "international", "climate-change manipulations", "plant-communities", "Medicine", "0401 agriculture", " forestry", " and fisheries", "community structure", "Research Article"]}, "links": [{"href": "https://doi.org/10.1371/journal.pone.0060441"}, {"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.0060441", "name": "item", "description": "10.1371/journal.pone.0060441", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1371/journal.pone.0060441"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-03-27T00:00:00Z"}}, {"id": 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\u0627\u0644\u0628\u0634\u0631\u064a\u0629. \u0642\u062f \u064a\u0643\u0648\u0646 \u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u0645\u0648\u0627\u0631\u062f \u0627\u0644\u0628\u0634\u0631\u064a\u0629 \u0645\u0631\u062a\u0628\u0637\u064b\u0627 \u0628\u0643\u0641\u0627\u0621\u0629 \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0645\u064a\u0643\u0631\u0648\u0628\u064a \u0627\u0644\u0645\u062a\u063a\u064a\u0631 C. \u062a\u0645 \u062a\u0639\u0632\u064a\u0632 \u0627\u0644\u0633\u064a\u0627\u0633\u0629 \u0627\u0644\u0627\u0642\u062a\u0635\u0627\u062f\u064a\u0629 \u0627\u0644\u062c\u062f\u064a\u062f\u0629 \u0628\u0634\u0643\u0644 \u0643\u0628\u064a\u0631 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0625\u0636\u0627\u0641\u0629 N\u060c \u0645\u0646 149 \u0625\u0644\u0649 426.6\u062c\u0645 \u0645\u0643\u0639\u0628\u0644\u0643\u0644 \u0633\u0646\u0629. \u0642\u062f \u062a\u0624\u062f\u064a \u0625\u0636\u0627\u0641\u0629 N \u0642\u0635\u064a\u0631\u0629 \u0627\u0644\u0623\u062c\u0644 \u0625\u0644\u0649 \u062a\u0639\u0632\u064a\u0632 \u062f\u0648\u0631 \u0627\u0644\u0645\u0632\u0627\u0631\u0639 \u0628\u0634\u0643\u0644 \u0643\u0628\u064a\u0631 \u0643\u0645\u063a\u0633\u0644\u0629 C \u0645\u0647\u0645\u0629.", "keywords": ["Biomass (ecology)", "Carbon sequestration", "0106 biological sciences", "Organic chemistry", "Carbon Dynamics in Peatland Ecosystems", "Plant Roots", "01 natural sciences", "Agricultural and Biological Sciences", "Soil", "Biomass", "2. Zero hunger", "Global and Planetary Change", "Ecology", "Primary production", "Respiration", "Q", "R", "Life Sciences", "Agriculture", "Soil respiration", "Chemistry", "Physical Sciences", "Heterotroph", "Environmental chemistry", "Medicine", "Seasons", "Nitrogen Deposition", "Ecosystem Functioning", "Research Article", "Carbon Sequestration", "Autotroph", "Nitrogen", "Science", "Cell Respiration", "Soil Science", "Plant litter", "Environmental science", "Litter", "Genetics", "Soil Carbon Sequestration", "Biology", "Ecosystem", "Bacteria", "Global Forest Drought Response and Climate Change", "Botany", "Carbon Dioxide", "15. Life on land", "Agronomy", "13. Climate action", "FOS: Biological sciences", "Environmental Science", "Soil Carbon Dynamics and Nutrient Cycling in Ecosystems", "Animal science"], "contacts": [{"organization": "Zhenmin Du, Wei Wang, Wenjing Zeng, Hui Zeng,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1371/journal.pone.0087975"}, {"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.0087975", "name": "item", "description": "10.1371/journal.pone.0087975", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1371/journal.pone.0087975"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-02-03T00:00:00Z"}}, {"id": "10.1594/pangaea.972412", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-27T16:20:35Z", "type": "Dataset", "title": "Radiocarbon content and age of terrestrial material deposited at the paleo-delta of the Lena River at the transition to the Preboreal", "description": "The dataset was used to reconstruct the release of permafrost organic carbon from the watershed of the Lena River (Russia) between 11.1 and 11.7 calibrated thousand years Before Present (cal. kyr BP, Present = 1950 AD) and to model potential methane emissions from this carbon source. Data were obtained analyzing plant debris isolated from the low density fraction (<1.8 g/cm3) of muddy sediments from the Piston Core 23 (PC23). The sediment core was retrieved in July 2014 in the mid/outer-shelf of the Laptev Sea shelf (76\u00b0 10' 15.6''N; 129\u00b0 20' 13.2''E, water depth of 56 m) during Leg 1 of the SWERUS-C3 expedition (Swedish-Russian-U.S. Arctic Ocean \u2013 Investigation of Climate-Cryosphere-Carbon interactions). Radiocarbon (\u00b9\u2074C) content measurements were performed on 4 to 7 mg of sample on May 2022 using the Continuous Flow Accelerator Mass Spectrometry (CFAMS) system at the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility (Woods Hole Oceanographic Institution, Woods Hole, MA, USA). The \u00b9\u2074C content was used to calculate \u00b9\u2074C isotope ratios (D\u00b9\u2074C) and to reconstruct non-calibrated and calibrated \u00b9\u2074C ages of plant debris isolated from the sediment fraction with a density lower than 1.8 g/cm3. Additionally, D\u00b9\u2074C values were used to calculate the \u00b9\u2074C content of plant debris at time of sediment deposition (D\u00b9\u2074Ci) and the latter to obtain pre-depositional \u00b9\u2074C ages. The dataset allowed to reconstruct the age of the terrestrial plant material when deposited at the coring site and identify its provenance from within the permafrost OC pool (sub-surface soil within 1 m depth vs deep soil) after remobilization. The average pre-depositional \u00b9\u2074C age of plant debris was ultimately used to model methane emissions from relatively young permafrost organic carbon during the late deglaciation (ca. 10 to 15 cal. kyr BP).", "keywords": ["Piston corer", "SWERUS C3", "Longitude of event", "Age", " 14C", "\u039414C", "Fraction modern carbon", "Calendar age", "Permafrost", "DEPTH", " sediment/rock", "Latitude of event", "Oden", "Age", "Arctic", "AGE", "pre depositional", "bottom maximum", "top min", "Date/Time of event", "Calculated", "\u039414C", " initial", " error", "Fraction modern carbon", " error", "Sample code/label", "Deglaciation", "Depth", " sediment/rock", " bottom/maximum", "\u039414C", " error", "Age", " pre-depositional", " error", "Depth", "Event label", "Date Time of event", "Continuous Flow Accelerator Mass Spectrometry", "initial", "Sample code label", "Depth", " top/min", "Calendar age", " standard error", "Age", " error", "error", "Elevation of event", "sediment rock", "\u039414C", " initial", "14C", "standard error", "DEPTH", "Age", " pre-depositional", "Earth System Research", "SWERUS-C3", "Methane"], "contacts": [{"organization": "Sabino, Mathia, Gustafsson, \u00d6rjan, Wild, Birgit, Semiletov, Igor P, Dudarev, Oleg V, Ingrosso, Gianmarco, Tesi, Tommaso,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1594/pangaea.972412"}, {"rel": "self", "type": "application/geo+json", "title": "10.1594/pangaea.972412", "name": "item", "description": "10.1594/pangaea.972412", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1594/pangaea.972412"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Deposition&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=Deposition&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Deposition&", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Deposition&offset=50", "hreflang": "en-US"}], "numberMatched": 94, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-07-28T15:55:40.383097Z"}