{"type": "FeatureCollection", "features": [{"id": "10.1007/s00248-003-9001-x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:29Z", "type": "Journal Article", "created": "2004-06-15", "title": "Microbial Community Structure And Oxidative Enzyme Activity In Nitrogen-Amended North Temperate Forest Soils", "description": "Large regions of temperate forest are subject to elevated atmospheric nitrogen (N) deposition which can affect soil organic matter dynamics by altering mass loss rates, soil respiration, and dissolved organic matter production. At present there is no general model that links these responses to changes in the organization and operation of microbial decomposer communities. Toward that end, we studied the response of litter and soil microbial communities to high levels of N amendment (30 and 80 kg ha(-1) yr(-1)) in three types of northern temperate forest: sugar maple/basswood (SMBW), sugar maple/red oak (SMRO), and white oak/black oak (WOBO). We measured the activity of extracellular enzymes (EEA) involved directly in the oxidation of lignin and humus (phenol oxidase, peroxidase), and indirectly, through the production of hydrogen peroxide (glucose oxidase, glyoxal oxidase). Community composition was analyzed by extracting and quantifying phospholipid fatty acids (PLFA) from soils. Litter EEA responses at SMBW sites diverged from those at oak-bearing sites (SMRO, BOWO), but the changes were not statistically significant. For soil, EEA responses were consistent across forests types: phenol oxidase and peroxidase activities declined as a function of N dose (33-73% and 5-41%, respectively, depending on forest type); glucose oxidase and glyoxal oxidase activities increased (200-400% and 150-300%, respectively, depending on forest type). Principal component analysis (PCA) ordinated forest types and treatment responses along two axes; factor 1 (44% of variance) was associated with phenol oxidase and peroxidase activities, factor 2 (31%) with glucose oxidase. Microbial biomass did not respond to N treatment, but nine of the 23 PLFA that formed >1 mol% of total biomass showed statistically significant treatment responses. PCA ordinated forest types and treatment responses along three axes (36%, 26%, 12% of variance). EEA factors 1 and 2 correlated negatively with PLFA factor 1 ( r = -0.20 and -0.35, respectively, n = 108) and positively with PLFA factor 3 ( r = +0.36 and +0.20, respectively, n = 108). In general, EEA responses were more strongly tied to changes in bacterial PLFA than to changes in fungal PLFA. Collectively, our data suggests that N inhibition of oxidative activity involves more than the repression of ligninase expression by white-rot basidiomycetes.", "keywords": ["Michigan", "Nitrogen", "Science", "Ecology and Evolutionary Biology", "Nature Conservation", "Microbiology", "Trees", "Soil", "Geoecology/Natural Processes", "Health Sciences", "Cellular and Developmental Biology", "Ecosystem", "Phospholipids", "Soil Microbiology", "2. Zero hunger", "Analysis of Variance", "Principal Component Analysis", "Ecology", "Life Sciences", "Natural Resources and Environment", "Molecular", "04 agricultural and veterinary sciences", "15. Life on land", "Enzymes", "13. Climate action", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1007/s00248-003-9001-x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microbial%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00248-003-9001-x", "name": "item", "description": "10.1007/s00248-003-9001-x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00248-003-9001-x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-04-19T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2007.01313.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:18:58Z", "type": "Journal Article", "created": "2007-01-19", "title": "Plant Species Richness, Elevated Co2, And Atmospheric Nitrogen Deposition Alter Soil Microbial Community Composition And Function", "description": "Abstract

We determined soil microbial community composition and function in a field experiment in which plant communities of increasing species richness were exposed to factorial elevated CO2 and nitrogen (N) deposition treatments. Because elevated CO2 and N deposition increased plant productivity to a greater extent in more diverse plant assemblages, it is plausible that heterotrophic microbial communities would experience greater substrate availability, potentially increasing microbial activity, and accelerating soil carbon (C) and N cycling. We, therefore, hypothesized that the response of microbial communities to elevated CO2 and N deposition is contingent on the species richness of plant communities. Microbial community composition was determined by phospholipid fatty acid analysis, and function was measured using the activity of key extracellular enzymes involved in litter decomposition. Higher plant species richness, as a main effect, fostered greater microbial biomass, cellulolytic and chitinolytic capacity, as well as the abundance of saprophytic and arbuscular mycorrhizal (AM) fungi. Moreover, the effect of plant species richness on microbial communities was significantly modified by elevated CO2 and N deposition. For instance, microbial biomass and fungal abundance increased with greater species richness, but only under combinations of elevated CO2 and ambient N, or ambient CO2 and N deposition. Cellobiohydrolase activity increased with higher plant species richness, and this trend was amplified by elevated CO2. In most cases, the effect of plant species richness remained significant even after accounting for the influence of plant biomass. Taken together, our results demonstrate that plant species richness can directly regulate microbial activity and community composition, and that plant species richness is a significant determinant of microbial response to elevated CO2 and N deposition. The strong positive effect of plant species richness on cellulolytic capacity and microbial biomass indicate that the rates of soil C cycling may decline with decreasing plant species richness.

", "keywords": ["Extracellular Enzymes", "Complementary Resource Use", "Science", "Ecology and Evolutionary Biology", "Grassland Ecosystem", "Phospholipid Fatty Acid (PLFA)", "Global Change", "14. Life underwater", "complimentary resource use", "global change", "580", "2. Zero hunger", "Plant Diversity", "microbial biomass", "Geology and Earth Sciences", "grasslands", "Soil Fungi", "extracellular enzymes", "04 agricultural and veterinary sciences", "15. Life on land", "Microbial Biomass", "Soil C Cycling", "plant diversity", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "FACE (Free-air Carbon Dioxide Enrichment)"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2486.2007.01313.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.1365-2486.2007.01313.x", "name": "item", "description": "10.1111/j.1365-2486.2007.01313.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2007.01313.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-01-19T00:00:00Z"}}, {"id": "10.1002/eap.1648", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:09Z", "type": "Journal Article", "created": "2017-11-07", "title": "Crop rotations for increased soil carbon: perenniality as a guiding principle", "description": "Abstract

More diverse crop rotations have been promoted for their potential to remediate the range of ecosystem services compromised by biologically simplified grain\uffe2\uff80\uff90based agroecosystems, including increasing soil organic carbon (SOC). We hypothesized that functional diversity offers a more predictive means of characterizing the impact of crop rotations on SOC concentrations than species diversity per se. Furthermore, we hypothesized that functional diversity can either increase or decrease SOC depending on its associated carbon (C) input to soil. We compiled a database of 27 cropping system sites and 169 cropping systems, recorded the species and functional diversity of crop rotations, SOC concentrations (g C kg/soil), nitrogen (N) fertilizer applications (kg\uffc2\uffa0N\uffc2\uffb7ha\uffe2\uff88\uff921\uffc2\uffb7yr\uffe2\uff88\uff921), and estimated C input to soil (Mg\uffc2\uffa0C\uffc2\uffb7ha\uffe2\uff88\uff921\uffc2\uffb7yr\uffe2\uff88\uff921). We categorized crop rotations into three broad categories: grain\uffe2\uff80\uff90only rotations, grain rotations with cover crops, and grain rotations with perennial crops. We divided the grain\uffe2\uff80\uff90only rotations into two sub\uffe2\uff80\uff90categories: cereal\uffe2\uff80\uff90only rotations and those that included both cereals and a legume grain. We compared changes in SOC and C input using mean effect sizes and 95% bootstrapped confidence intervals. Cover cropped and perennial cropped rotations, relative to grain\uffe2\uff80\uff90only rotations, increased C input by 42% and 23% and SOC concentrations by 6.3% and 12.5%, respectively. Within grain\uffe2\uff80\uff90only rotations, cereal\uffc2\uffa0+\uffc2\uffa0legume grain rotations decreased total C input (\uffe2\uff88\uff9216%), root C input (\uffe2\uff88\uff9212%), and SOC (\uffe2\uff88\uff925.3%) relative to cereal\uffe2\uff80\uff90only rotations. We found no effect of species diversity on SOC within grain\uffe2\uff80\uff90only rotations. N fertilizer rates mediated the effect of functional diversity on SOC within grain\uffe2\uff80\uff90only crop rotations: at low N fertilizer rates (\uffe2\uff89\uffa475\uffc2\uffa0kg N\uffc2\uffb7ha\uffe2\uff88\uff921\uffc2\uffb7yr\uffe2\uff88\uff921), the decrease in SOC with cereal\uffc2\uffa0+\uffc2\uffa0legume grain rotations was less than at high N fertilizer rates. Our results show that increasing the functional diversity of crop rotations is more likely to increase SOC concentrations if it is accompanied by an increase in C input. Functionally diverse perennial and cover cropped rotations increased both C input and SOC concentrations, potentially by exploiting niches in time that would otherwise be unproductive, that is, increasing the \uffe2\uff80\uff9cperenniality\uffe2\uff80\uff9d of crop rotations.

", "keywords": ["Crops", " Agricultural", "2. Zero hunger", "Science", "Ecology and Evolutionary Biology", "Agriculture", "Fabaceae", "cropping systems", "04 agricultural and veterinary sciences", "15. Life on land", "functional diversity", "Poaceae", "sustainable agriculture", "Soil", "meta\u2010analysis", "soil organic matter", "0401 agriculture", " forestry", " and fisheries", "cover crops", "soil carbon", "Organic Chemicals", "perennials", "Fertilizers", "nitrogen fertilizer", "biodiversity"]}, "links": [{"href": "https://doi.org/10.1002/eap.1648"}, {"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": "10.1002/eap.1648", "name": "item", "description": "10.1002/eap.1648", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/eap.1648"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-12-27T00:00:00Z"}}, {"id": "10.1007/s10021-005-0085-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:42Z", "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/pl00008869", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:28Z", "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/pl00008870", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:28Z", "type": "Journal Article", "created": "2006-04-10", "title": "Spring Ephemeral Herbs And Nitrogen Cycling In A Northern Hardwood Forest: An Experimental Test Of The Vernal Dam Hypothesis", "description": "In the late 1970s R.N. Muller and F.H. Bormann posited their 'vernal dam' hypothesis, stating that spring-ephemeral herbs in deciduous forests serve as a temporary sink for N when overstory trees are dormant, and then release this N later, in the summer, when the trees are active. This hypothesis has gained wide acceptance, yet two of its critical assumptions have never been experimentally tested: (1) that N taken up by spring ephemerals would otherwise be lost from the ecosystem, and (2) that N from senesced ephemeral tissues contributes to increased rates of summertime N mineralization. To test these assumptions, I quantified patterns of N cycling and loss from a set of paired plots, half of which served as controls and from half of which all spring-ephemeral plants were removed. There were no significant differences in NO3- leaching between plots with and without spring ephemeral vegetation. These results are consistent with the relatively low rates of N uptake by the dominant spring ephemeral, Allium tricoccum, and its apparent preference for NH4+, which is far less mobile in soil than NO3-. In addition, based on sequential sampling, I found that soil microorganisms took up 8 times as much N during the spring than did spring-ephemeral herbs (microbial uptake=3.19 vs. plant uptake=0.41 g N m-2), suggesting that microbial immobilization of N is the dominant sink for N during this season. Removal of spring ephemeral vegetation also had no effect on summertime rates of net N mineralization. Furthermore, the addition of spring ephemeral litter to soil+forest floor microcosms did not significantly increase rates of N mineralization in a laboratory incubation. Instead, this experiment demonstrated the overwhelming influence of forest floor litter in controlling the release of mineral N from these soils. Overall, neither assumption of the vernal dam hypothesis holds true in this ecosystem, where patterns of N cycling and loss appear to be dominated by microbial decomposition of forest floor material and soil organic matter.", "keywords": ["0106 biological sciences", "NO3\u2013 Leaching", "N Immobilization", "Science", "Ecology and Evolutionary Biology", "Key Words Vernal Dam", "Natural Resources and Environment", "Molecular", "04 agricultural and veterinary sciences", "15. Life on land", "Spring Ephemerals", "01 natural sciences", "Microbial Biomass", "Legacy", "Health Sciences", "0401 agriculture", " forestry", " and fisheries", "Cellular and Developmental Biology"], "contacts": [{"organization": "Rothstein, David E.", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/pl00008870"}, {"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/pl00008870", "name": "item", "description": "10.1007/pl00008870", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/pl00008870"}, {"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/s00442-005-0249-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:38Z", "type": "Journal Article", "created": "2005-10-04", "title": "Fungal Community Composition And Metabolism Under Elevated Co2 And O-3", "description": "Atmospheric CO(2) and O(3) concentrations are increasing due to human activity and both trace gases have the potential to alter C cycling in forest ecosystems. Because soil microorganisms depend on plant litter as a source of energy for metabolism, changes in the amount or the biochemistry of plant litter produced under elevated CO(2) and O(3) could alter microbial community function and composition. Previously, we have observed that elevated CO(2) increased the microbial metabolism of cellulose and chitin, whereas elevated O(3) dampened this response. We hypothesized that this change in metabolism under CO(2) and O(3) enrichment would be accompanied by a concomitant change in fungal community composition. We tested our hypothesis at the free-air CO(2) and O(3) enrichment (FACE) experiment at Rhinelander, Wisconsin, in which Populus tremuloides, Betula papyrifera, and Acer saccharum were grown under factorial CO(2) and O(3) treatments. We employed extracellular enzyme analysis to assay microbial metabolism, phospholipid fatty acid (PLFA) analysis to determine changes in microbial community composition, and polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) to analyze the fungal community composition. The activities of 1,4-beta-glucosidase (+37%) and 1,4,-beta-N-acetylglucosaminidase (+84%) were significantly increased under elevated CO(2), whereas 1,4-beta-glucosidase activity (-25%) was significantly suppressed by elevated O(3). There was no significant main effect of elevated CO(2) or O(3) on fungal relative abundance, as measured by PLFA. We identified 39 fungal taxonomic units from soil using DGGE, and found that O(3) enrichment significantly altered fungal community composition. We conclude that fungal metabolism is altered under elevated CO(2) and O(3), and that there was a concomitant change in fungal community composition under elevated O(3). Thus, changes in plant inputs to soil under elevated CO(2) and O(3) can propagate through the microbial food web to alter the cycling of C in soil.", "keywords": ["0106 biological sciences", "Food Chain", "Extracellular Enzymes", "Science", "Ecology and Evolutionary Biology", "Polymerase Chain Reaction\u2013Denaturing Gradient Gel Electrophoresis", "Polymerase Chain Reaction", "01 natural sciences", "Soil Microbial Community", "Soil", "Ozone", "Health Sciences", "Acetylglucosaminidase", "Cellular and Developmental Biology", "Ecosystem", "Soil Microbiology", "beta-Glucosidase", "Fatty Acids", "Fungi", "Natural Resources and Environment", "Molecular", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Fungal Metabolism", "Carbon", "Free-air CO 2 and O 3 Enrichment", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Extracellular Space"]}, "links": [{"href": "https://doi.org/10.1007/s00442-005-0249-3"}, {"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/s00442-005-0249-3", "name": "item", "description": "10.1007/s00442-005-0249-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-005-0249-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-10-05T00:00:00Z"}}, {"id": "10.1007/s00442-005-0191-4", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:38Z", "type": "Journal Article", "created": "2005-07-22", "title": "Fine Root Chemistry And Decomposition In Model Communities Of North-Temperate Tree Species Show Little Response To Elevated Atmospheric Co2 And Varying Soil Resource Availability", "description": "Rising atmospheric [CO2] has the potential to alter soil carbon (C) cycling by increasing the content of recalcitrant constituents in plant litter, thereby decreasing rates of decomposition. Because fine root turnover constitutes a large fraction of annual NPP, changes in fine root decomposition are especially important. These responses will likely be affected by soil resource availability and the life history characteristics of the dominant tree species. We evaluated the effects of elevated atmospheric [CO2] and soil resource availability on the production and chemistry, mycorrhizal colonization, and decomposition of fine roots in an early- and late-successional tree species that are economically and ecologically important in north temperate forests. Open-top chambers were used to expose young trembling aspen (Populus tremuloides) and sugar maple (Acer saccharum) trees to ambient (36 Pa) and elevated (56 Pa) atmospheric CO2. Soil resource availability was composed of two treatments that bracketed the range found in the Upper Lake States, USA. After 2.5 years of growth, sugar maple had greater fine root standing crop due to relatively greater allocation to fine roots (30% of total root biomass) relative to aspen (7% total root biomass). Relative to the low soil resources treatment, aspen fine root biomass increased 76% with increased soil resource availability, but only under elevated [CO2]. Sugar maple fine root biomass increased 26% with increased soil resource availability (relative to the low soil resources treatment), and showed little response to elevated [CO2]. Concentrations of N and soluble phenolics, and C/N ratio in roots were similar for the two species, but aspen had slightly higher lignin and lower condensed tannins contents compared to sugar maple. As predicted by source-sink models of carbon allocation, pooled constituents (C/N ratio, soluble phenolics) increased in response to increased relative carbon availability (elevated [CO2]/low soil resource availability), however, biosynthetically distinct compounds (lignin, starch, condensed tannins) did not always respond as predicted. We found that mycorrhizal colonization of fine roots was not strongly affected by atmospheric [CO2] or soil resource availability, as indicated by root ergosterol contents. Overall, absolute changes in root chemical composition in response to increases in C and soil resource availability were small and had no effect on soil fungal biomass or specific rates of fine root decomposition. We conclude that root contributions to soil carbon cycling will mainly be influenced by fine root production and turnover responses to rising atmospheric [CO2], rather than changes in substrate chemistry.", "keywords": ["0106 biological sciences", "Science", "Climate", "Ecology and Evolutionary Biology", "Plant Roots", "01 natural sciences", "Trees", "Sugar Maple", "Soil", "Ergosterol", "Health Sciences", "Carbon-based Secondary Compounds", "Biomass", "Cellular and Developmental Biology", "Ecosystem", "Soil Microbiology", "Atmosphere", "Fungi", "Natural Resources and Environment", "Molecular", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Soil C Cycling", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Trembling Aspen"]}, "links": [{"href": "https://doi.org/10.1007/s00442-005-0191-4"}, {"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/s00442-005-0191-4", "name": "item", "description": "10.1007/s00442-005-0191-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-005-0191-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-07-23T00:00:00Z"}}, {"id": "10.1007/s00442-006-0381-8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:38Z", "type": "Journal Article", "created": "2006-02-17", "description": "The aspen free-air CO2 and O3 enrichment (FACTS II-FACE) study in Rhinelander, Wisconsin, USA, is designed to understand the mechanisms by which young northern deciduous forest ecosystems respond to elevated atmospheric carbon dioxide (CO2) and elevated tropospheric ozone (O3) in a replicated, factorial, field experiment. Soil respiration is the second largest flux of carbon (C) in these ecosystems, and the objective of this study was to understand how soil respiration responded to the experimental treatments as these fast-growing stands of pure aspen and birch + aspen approached maximum leaf area. Rates of soil respiration were typically lowest in the elevated O3 treatment. Elevated CO2 significantly stimulated soil respiration (8-26%) compared to the control treatment in both community types over all three growing seasons. In years 6-7 of the experiment, the greatest rates of soil respiration occurred in the interaction treatment (CO2 + O3), and rates of soil respiration were 15-25% greater in this treatment than in the elevated CO2 treatment, depending on year and community type. Two of the treatments, elevated CO2 and elevated CO2 + O3, were fumigated with 13C-depleted CO2, and in these two treatments we used standard isotope mixing models to understand the proportions of new and old C in soil respiration. During the peak of the growing season, C fixed since the initiation of the experiment in 1998 (new C) accounted for 60-80% of total soil respiration. The isotope measurements independently confirmed that more new C was respired from the interaction treatment compared to the elevated CO2 treatment. A period of low soil moisture late in the 2003 growing season resulted in soil respiration with an isotopic signature 4-6 per thousand enriched in 13C compared to sample dates when the percentage soil moisture was higher. In 2004, an extended period of low soil moisture during August and early September, punctuated by a significant rainfall event, resulted in soil respiration that was temporarily 4-6 per thousand more depleted in 13C. Up to 50% of the Earth's forests will see elevated concentrations of both CO2 and O3 in the coming decades and these interacting atmospheric trace gases stimulated soil respiration in this study.", "keywords": ["0106 biological sciences", "Science", "Ecology and Evolutionary Biology", "Cell Respiration", "Acer", "Carbon Cycling", "Plant Roots", "01 natural sciences", "Trees", "Soil", "Ozone", "Stable Isotope", "Air Pollution", "Health Sciences", "\u03b4 13 C", "Global Change", "Cellular and Developmental Biology", "Betula", "Ecosystem", "Soil Microbiology", "Carbon Isotopes", "Atmosphere", "Natural Resources and Environment", "Molecular", "Carbon Dioxide", "15. Life on land", "Populus", "13. Climate action"]}, "links": [{"href": "https://doi.org/10.1007/s00442-006-0381-8"}, {"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/s00442-006-0381-8", "name": "item", "description": "10.1007/s00442-006-0381-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-006-0381-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-02-18T00:00:00Z"}}, {"id": "10.1007/s004420050375", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:40Z", "type": "Journal Article", "created": "2002-08-25", "title": "Response Of Soil Biota To Elevated Atmospheric Co 2 In Poplar Model Systems", "description": "We tested the hypotheses that increased belowground allocation of carbon by hybrid poplar saplings grown under elevated atmospheric CO2 would increase mass or turnover of soil biota in bulk but not in rhizosphere soil. Hybrid poplar saplings (Populus\u00d7euramericana cv. Eugenei) were grown for 5 months in open-bottom root boxes at the University of Michigan Biological Station in northern, lower Michigan. The experimental design was a randomized-block design with factorial combinations of high or low soil N and ambient (34 Pa) or elevated (69 Pa) CO2 in five blocks. Rhizosphere microbial biomass carbon was 1.7 times greater in high-than in low-N soil, and did not respond to elevated CO2. The density of protozoa did not respond to soil N but increased marginally (P\u2009<\u20090.06) under elevated CO2. Only in high-N soil did arbuscular mycorrhizal fungi and microarthropods respond to CO2. In high-N soil, arbuscular mycorrhizal root mass was twice as great, and extramatrical hyphae were 11% longer in elevated than in ambient CO2 treatments. Microarthropod density and activity were determined in situ using minirhizotrons. Microarthropod density did not change in response to elevated CO2, but in high-N soil, microarthropods were more strongly associated with fine roots under elevated than ambient treatments. Overall, in contrast to the hypotheses, the strongest response to elevated atmospheric CO2 was in the rhizosphere where (1) unchanged microbial biomass and greater numbers of protozoa (P\u2009<\u20090.06) suggested faster bacterial turnover, (2) arbuscular mycorrhizal root length increased, and (3) the number of microarthropods observed on fine roots rose.", "keywords": ["0106 biological sciences", "2. Zero hunger", "Arbuscular Mycorrhizas", "Microarthropods", "Science", "Ecology and Evolutionary Biology", "Natural Resources and Environment", "Molecular", "04 agricultural and veterinary sciences", "15. Life on land", "Roots", "01 natural sciences", "Microbial Biomass", "Legacy", "Health Sciences", "0401 agriculture", " forestry", " and fisheries", "Key Words Atmospheric CO2", "Cellular and Developmental Biology"], "contacts": [{"organization": "Treonis, Amy, Lussenhop, John, Teeri, James A., Curtis, Peter S., Vogel, Christoph S.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s004420050375"}, {"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/s004420050375", "name": "item", "description": "10.1007/s004420050375", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s004420050375"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1998-01-09T00:00:00Z"}}, {"id": "10.1007/s004420100656", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:40Z", "type": "Journal Article", "created": "2003-02-13", "title": "Fine-Root Biomass And Fluxes Of Soil Carbon In Young Stands Of Paper Birch And Trembling Aspen As Affected By Elevated Atmospheric Co2 And Tropospheric O3", "description": "Rising atmospheric CO2 may stimulate future forest productivity, possibly increasing carbon storage in terrestrial ecosystems, but how tropospheric ozone will modify this response is unknown. Because of the importance of fine roots to the belowground C cycle, we monitored fine-root biomass and associated C fluxes in regenerating stands of trembling aspen, and mixed stands of trembling aspen and paper birch at FACTS-II, the Aspen FACE project in Rhinelander, Wisconsin. Free-air CO2 enrichment (FACE) was used to elevate concentrations of CO2 (average enrichment concentration 535\u00a0\u00b5l l-1) and O3 (53\u00a0nl l-1) in developing forest stands in 1998 and 1999. Soil respiration, soil pCO2, and dissolved organic carbon in soil solution (DOC) were monitored biweekly. Soil respiration was measured with a portable infrared gas analyzer. Soil pCO2 and DOC samples were collected from soil gas wells and tension lysimeters, respectively, at depths of 15, 30, and 125\u00a0cm. Fine-root biomass averaged 263\u00a0g m-2 in control plots and increased 96% under elevated CO2. The increased root biomass was accompanied by a 39% increase in soil respiration and a 27% increase in soil pCO2. Both soil respiration and pCO2 exhibited a strong seasonal signal, which was positively correlated with soil temperature. DOC concentrations in soil solution averaged ~12\u00a0mg l-1 in surface horizons, declined with depth, and were little affected by the treatments. A simplified belowground C budget for the site indicated that native soil organic matter still dominated the system, and that soil respiration was by far the largest flux. Ozone decreased the above responses to elevated CO2, but effects were rarely statistically significant. We conclude that regenerating stands of northern hardwoods have the potential for substantially greater C input to soil due to greater fine-root production under elevated CO2. Greater fine-root biomass will be accompanied by greater soil C efflux as soil respiration, but leaching losses of C will probably be unaffected.", "keywords": ["0106 biological sciences", "Ecology and Evolutionary Biology", "Aspen-FACE-project", "root-", "USA-", "pollutants-", "Environmental-Sciences)", "tropospheric-ozone", "forest-productivity", "01 natural sciences", "biomass-", "northern-forests", "124-38-9: CARBON DIOXIDE", "soil-carbon-flux", "terrestrial-ecosystems", "populus-tremuloides", "Cellular and Developmental Biology", "soil-carbon", "7440-44-0: CARBON", "carbon-", "fine-root", "Bioenergetics- (Biochemistry-and-Molecular-Biophysics)", "Natural Resources and Environment", "04 agricultural and veterinary sciences", "GLOBAL-ECOLOGY", "North-America", "Nearctic-region)", "Rhinelander- (Wisconsin-", "carbon-sequestration", "atmosphere-", "biomass-production", "dissolved-organic-carbon [DOC-]", "Science", "respiration-", "carbon-dioxide-enrichment", "forest-plantations", "carbon-dioxide", "carbon-storage", "fine-root-biomass", "belowground-biomass", "United-States-Wisconsin-Rhinelander", "carbon-cycle", "Health Sciences", "ozone-", "soil-respiration", "air-pollution", "global-change", "atmospheric-carbon-dioxide", "biomass", "Molecular", "15. Life on land", "ozone", "13. Climate action", "roots-", "Legacy", "Terrestrial-Ecology (Ecology-", "free-air-carbon-dioxide-enrichment [FREE-]: experimental-method", "0401 agriculture", " forestry", " and fisheries", "Northern Forests Global Change Carbon Sequestration Soil Respiration Dissolved Organic Carbon Soil PCO2"]}, "links": [{"href": "https://doi.org/10.1007/s004420100656"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oecologia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s004420100656", "name": "item", "description": "10.1007/s004420100656", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s004420100656"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2001-07-01T00:00:00Z"}}, {"id": "10.1007/s10533-004-7112-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:14:50Z", "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": "10.1016/j.foreco.2004.03.010", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:16:15Z", "type": "Journal Article", "created": "2004-06-12", "title": "Effects Of Chronic Nitrogen Amendment On Dissolved Organic Matter And Inorganic Nitrogen In Soil Solution", "description": "Abstract Increased atmospheric deposition of N to forests is an issue of global concern, with largely undocumented long-term effects on soil solution chemistry. In contrast to bulk soil properties, which are typically slow to respond to a chronic stress, soil solution chemistry may provide an early indication of the long-term changes in soils associated with a chronic stress. At the Harvard Forest, soil solution was collected beneath the forest floor in zero tension lysimeters for 10 years (1993\u20132002) as part of an N saturation experiment. The experiment was begun in 1988 with 5 or 15\u00a0g\u00a0N\u00a0m\u22122 per year added to hardwood and pine forest plots, and our samples thus characterize the long-term response to N fertilization. Samples were routinely analyzed for inorganic nitrogen, dissolved organic nitrogen (DON), and dissolved organic carbon (DOC); selected samples were also analyzed to determine qualitative changes in the composition of dissolved organic matter. Fluxes of DOC, DON, and inorganic N were calculated based on modeled water loss from the forest floor and observed concentrations in lysimeter samples. The concentration and flux of inorganic N lost from the forest floor in percolating soil solution are strongly affected by N fertilization and have not shown any consistent trends over time. On average, inorganic N fluxes have reached or exceeded the level of fertilizer application in most plots. Concentrations of DOC were unchanged by N fertilization in both the hardwood and pine stands, with long-term seasonal averages ranging from 31\u201357\u00a0mg\u00a0l\u22121 (hardwood) and 36\u201393\u00a0mg\u00a0l\u22121 (pine). Annual fluxes of DOC ranged from 30\u201350\u00a0g\u00a0m\u22122 per year. DON concentrations more than doubled, resulting in a shift toward N-rich organic matter in soil solution percolating from the plots, and DON fluxes of 1\u20133\u00a0g\u00a0m\u22122 per year. The DOC:DON ratio of soil solution under high N application (10\u201320) was about half that of controls. The organic chemistry of soil solution undergoes large qualitative changes in response to N addition. With N saturation, there is proportionally more hydrophilic material in the total DON pool, and a lower C:N ratio in the hydrophobic fraction of the total DOM pool. Overall, our data show that fundamental changes in the chemistry of forest floor solution have occurred in response to N fertilization prior to initiation of our sampling. During the decade of this study (years 5\u201314 of N application) both inorganic N and dissolved organic matter concentrations have changed little despite the significant biotic changes that have accompanied N saturation.", "keywords": ["13. Climate action", "Ecology and Evolutionary Biology", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Scientific Contribution Number 2219", "Forest Sciences", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2004.03.010"}, {"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.2004.03.010", "name": "item", "description": "10.1016/j.foreco.2004.03.010", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2004.03.010"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-07-01T00:00:00Z"}}, {"id": "10.1016/j.foreco.2010.12.031", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-29T16:16:20Z", "type": "Journal Article", "created": "2011-01-14", "title": "Nitrogen Cycling Following Mountain Pine Beetle Disturbance In Lodgepole Pine Forests Of Greater Yellowstone", "description": "Widespread bark beetle outbreaks are currently affecting multiple conifer forest types throughout western North America, yet many ecosystem-level consequences of this disturbance are poorly understood. We quantified the effect of mountain pine beetle (Dendroctonus ponderosae) outbreak on nitrogen (N) cycling through litter, soil, and vegetation in lodgepole pine (Pinus contorta var. latifolia) forests of the Greater Yellowstone Ecosystem (WY, USA) across a 0\u201330 year chronosequence of time-since-beetle disturbance. Recent (1\u20134 years) bark beetle disturbance increased total litter depth and N concentration in needle litter relative to undisturbed stands, and soils in recently disturbed stands were cooler with greater rates of net N mineralization and nitrification than undisturbed sites. Thirty years after beetle outbreak, needle litter N concentration remained elevated; however total litter N concentration, total litter mass, and soil N pools and fluxes were not different from undisturbed stands. Canopy N pool size declined 58% in recent outbreaks, and remained 48% lower than undisturbed in 30-year old outbreaks. Foliar N concentrations in unattacked lodgepole pine trees and an understory sedge were positively correlated with net N mineralization in soils across the chronosequence. Bark beetle disturbance altered N cycling through the litter, soil, and vegetation of lodgepole pine forests, but changes in soil N cycling were less severe than those observed following stand replacing fire. Several lines of evidence suggest the potential for N leaching is low following bark beetle disturbance in lodgepole pine.", "keywords": ["0106 biological sciences", "Ecology and Evolutionary Biology", "Forest Biology", "15. Life on land", "Entomology", "Forest Management", "Forest Sciences", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2010.12.031"}, {"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.2010.12.031", "name": "item", "description": "10.1016/j.foreco.2010.12.031", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2010.12.031"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-03-01T00:00:00Z"}}, {"id": "10.1016/j.geoderma.2015.04.007", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:16:29Z", "type": "Journal Article", "created": "2015-04-18", "title": "Will Changes In Climate And Land Use Affect Soil Organic Matter Composition? Evidence From An Ecotonal Climosequence", "description": "Abstract As the largest actively cycling pool of terrestrial C, the response of soil organic matter (SOM) to climate change may greatly affect global C cycling and climate change feedbacks. Despite the influence of SOM chemistry\u2014here defined as soil organic C (SOC) and soil organic N (SON) functional groups and compounds\u2014on decomposition, uncertainty exists regarding the response of SOM chemistry to climate change and associated land use shifts. Here, we adopt a climosequence approach, using latitude along a uniform glacial till deposit at the grassland\u2013forest ecotone in central Canada as a surrogate for the effects of climate change on SOM chemistry. Additionally, we evaluate differences in SOM chemistry from paired native grassland, native trembling aspen ( Populus tremuloides ) forest, and arable soil profiles to investigate the effects of likely climate-induced land use alterations. The combination of C and N K -edge X-ray absorption near edge structure (XANES) with pyrolysis-field ionization mass spectrometry (Py-FIMS) techniques was used to examine SOM chemistry at atomic and molecular scales, respectively. These techniques revealed only modest differences in surface SOM chemistry related to land use and latitude. Greater variation was apparent in the vertical stratification of SOM constituents from soil depth profiles. These findings indicate that pedon-scale processes have greater control over SOM chemistry than do processes operating on landscape (e.g. land use) and regional (e.g. climate) scales. Additionally they imply that SOM chemistry is largely unresponsive to climatic change on the magnitude of the mean annual temperature (MAT) gradient under study (~\u00a00.7\u00a0\u00b0C), despite its location at the grassland\u2013forest boundary highlighting its sensitivity, and is similarly unresponsive to associated land use shifts.", "keywords": ["Vegetation", "Ecology and Evolutionary Biology", "Plant Sciences", "Agriculture", "Genetics and Genomics", "04 agricultural and veterinary sciences", "15. Life on land", "Soil quality", "13. Climate action", "Land use", "Climate change", "0401 agriculture", " forestry", " and fisheries", "Organic nitrogen", "Forest Sciences", "Organic carbon"], "contacts": [{"organization": "Purton, Kendra, Pennock, Dan, Leinweber, Peter, Walley, Fran,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.geoderma.2015.04.007"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoderma", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.geoderma.2015.04.007", "name": "item", "description": "10.1016/j.geoderma.2015.04.007", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.geoderma.2015.04.007"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-09-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2015.07.094", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:16:50Z", "type": "Journal Article", "created": "2015-08-15", "title": "Fighting Carbon Loss Of Degraded Peatlands By Jump-Starting Ecosystem Functioning With Ecological Restoration", "description": "Degradation of ecosystems is a great concern on the maintenance of biodiversity and ecosystem services. Ecological restoration fights degradation aiming at the recovery of ecosystem functions such as carbon (C) sequestration and ecosystem structures like plant communities responsible for the C sequestration function. We selected 38 pristine, drained and restored boreal peatland sites in Finland and asked i) what is the long-term effect of drainage on the peatland surface layer C storage, ii) can restoration recover ecosystem functioning (surface layer growth) and structure (plant community composition) and iii) is the recovery of the original structure needed for the recovery of ecosystem functions? We found that drainage had resulted in a substantial net loss of C from surface layer of drained sites. Restoration was successful in regaining natural growth rate in the peatland surface layer already within 5 years after restoration. However, the regenerated surface layer sequestered C at a mean rate of 116.3 g m(-2) yr(-1) (SE 12.7), when a comparable short-term rate was 178.2 g m(-2) yr(-1) (SE 13.3) at the pristine sites. The plant community compositions of the restored sites were considerably dissimilar to those of pristine sites still 10 years after restoration. We conclude that ecological restoration can be used to jump-start some key peatland ecosystem functions even without the recovery of original ecosystem structure (plant community composition). However, the re-establishment of other functions like C sequestration may require more profound recovery of conditions and ecosystem structure. We discuss the potential economic value of restored peatland ecosystems from the perspective of their C sequestration function.", "keywords": ["0301 basic medicine", "Carbon Sequestration", "Conservation of Natural Resources", "ecosystem structure\u2013function relationship", "Ecology and Evolutionary Biology", "ta1172", "Museo", "plant community composition", "turve", "03 medical and health sciences", "Museum", "ecosystem recovery", "Ekologia ja evoluutiobiologia", "ta116", "Ecosystem", "Environmental Restoration and Remediation", "Finland", "0303 health sciences", "hiilensidonta", "Biodiversity", "15. Life on land", "16. Peace & justice", "carbon sequestration", "Carbon", "13. Climate action", "Wetlands", "peat", "ta1181", "ecosystem degradation"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2015.07.094"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2015.07.094", "name": "item", "description": "10.1016/j.scitotenv.2015.07.094", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2015.07.094"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-12-01T00:00:00Z"}}, {"id": "10.1080/00103620802135492", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:18:13Z", "type": "Journal Article", "created": "2008-07-02", "title": "Tillage Effects On Soil Quality Indicators And Nematode Abundance In Loessial Soil Under Long-Term No-Till Production", "description": "Abstract: Soil quality indicators and nematode abundance were characterized in a loessial soil under long\u2010term conservation tillage to evaluate the effects of no\u2010till, double\u2010disk, chisel, and moldboard plow treatments. Indicators included soil electrical conductivity (EC), soil texture, soil organic matter (SOM), and total particulate organic matter (tPOM). Nematode abundance was positively correlated with EC, silt content, and total POM and negatively correlated with clay content. Clay content was the main source of variation among soil quality indicators and was negatively correlated with nematode abundance and most indicators. The gain in SOM in the no\u2010till system amounted to 10887\u00a0kg over the 24 years or 454\u00a0kg\u00a0ha\u22121\u00a0year\u22121, about half of this difference (45%) resulting from soil erosion in plowed soils. The balance of gain in SOM with no till (249\u00a0kg\u00a0ha\u22121 year\u22121) was due to SOM sequestration with no till. No\u2010till management reduced soil erosion, increased SOM, and enhanced soil physical characteristics.", "keywords": ["2. Zero hunger", "nematode abundance", "no-till", "Ecology and Evolutionary Biology", "Loess", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "630", "6. Clean water", "tillage", "0401 agriculture", " forestry", " and fisheries", "soil quality", "Agricultural Science"]}, "links": [{"href": "https://doi.org/10.1080/00103620802135492"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Communications%20in%20Soil%20Science%20and%20Plant%20Analysis", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1080/00103620802135492", "name": "item", "description": "10.1080/00103620802135492", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1080/00103620802135492"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-07-01T00:00:00Z"}}, {"id": "10.1023/a:1009783625188", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:17:34Z", "type": "Journal Article", "created": "2002-12-22", "description": "Short-term studies of tree growth at elevated CO2 suggest that forest productivity may increase as atmospheric CO2 concentrations rise, although low soil N availability may limit the magnitude of this response. There have been few studies of growth and N2 fixation by symbiotic N 2-fixing woody species under elevated CO 2 and the N inputs these plants could provide to forest ecosystems in the future. We investigated the effect of twice ambient CO 2 on growth, tissue N accretion, and N2 fixation of nodulatedAlnus glutinosa (L.) Gaertn. grown under low soil N conditions for 160 d. Root, nodule, stem, and leaf dry weight (DW) and N accretion increased significantly in response to elevated CO2. Whole-plant biomass and N accretion increased 54% and 40%, respectively. Delta- 15 Na nalysis of leaf tissue indicated that plants from both treatments derived similar proportions of their total N from symbiotic fixation suggesting that elevated CO 2 grown plants fixed approximately 40% more N than did ambient CO 2 grown plants. Leaves from both CO2 treatments showed similar relative declines in leaf N content prior to autumnal leaf abscission, but total N in leaf litter increased 24% in elevated compared to ambient CO2 grown plants. These results suggest that with rising atmospheric CO2 N2-fixing woody species will accumulate greater amounts of biomass N through N2 fixation and may enhance soil N levels by increased litter N inputs.", "keywords": ["Delta 15 N Analysis", "0106 biological sciences", "Nitrogen Fixation", "Science", "Plant Sciences", "Ecology and Evolutionary Biology", "Life Sciences", "Carbon Dioxide Enrichment", "Root Nodules", "Black Alder", "15. Life on land", "01 natural sciences"], "contacts": [{"organization": "Christoph S. Vogel, Christoph S. Vogel, Richard B. Thomas, Peter S. Curtis, Peter S. Curtis,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1023/a:1009783625188"}, {"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:1009783625188", "name": "item", "description": "10.1023/a:1009783625188", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1023/a:1009783625188"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1997-05-01T00:00:00Z"}}, {"id": "10.1029/2005jg000152", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:17:40Z", "type": "Journal Article", "created": "2006-08-08", "title": "Nutrient Control Of Microbial Carbon Cycling Along An Ombrotrophic-Minerotrophic Peatland Gradient", "description": "

Future climate change and other anthropogenic activities are likely to increase nutrient availability in many peatlands, and it is important to understand how these additional nutrients will influence peatland carbon cycling. We investigated the effects of nitrogen and phosphorus on aerobic CH4oxidation, anaerobic carbon mineralization (as CO2and CH4production), and anaerobic nutrient mineralization in a bog, an intermediate fen, and a rich fen in the Upper Peninsula of Michigan. We utilized a 5\uffe2\uff80\uff90week laboratory nutrient amendment experiment in conjunction with a 6\uffe2\uff80\uff90year field nutrient fertilization experiment to consider how the relative response to nitrogen and phosphorus differed among these wetlands over the short and long term. Field fertilizations generally increased nutrient availability in the upper 15 cm of peat and resulted in shifts in the vegetation community in each peatland. High nitrogen concentrations inhibited CH4oxidation in bog peat during short\uffe2\uff80\uff90term incubations; however, long\uffe2\uff80\uff90term fertilization with lower concentrations of nitrogen stimulated rates of CH4oxidation in bog peat. In contrast, no nitrogen effects on CH4oxidation were observed in the intermediate or rich fen peat. Anaerobic carbon mineralization in bog peat was consistently inhibited by increased phosphorus availability, but similar phosphorus additions had few effects in the intermediate fen and stimulated CH4production and nutrient mineralization in the rich fen. Our results demonstrate that nitrogen and phosphorus are important controls of peatland microbial carbon cycling; however, the role of these nutrients can differ over the short and long term and is strongly mediated by peatland type.

", "keywords": ["Other Ecology and Evolutionary Biology", "2. Zero hunger", "Terrestrial and Aquatic Ecology", "Nutrients", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Peatlands", "Biochemistry", "01 natural sciences", "6. Clean water", "Microbial Carbon Cycling", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Methane", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1029/2005jg000152"}, {"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": "10.1029/2005jg000152", "name": "item", "description": "10.1029/2005jg000152", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2005jg000152"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-08-09T00:00:00Z"}}, {"id": "10.1038/s41559-017-0325-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:17:50Z", "type": "Journal Article", "created": "2017-09-29", "title": "Diversity-dependent temporal divergence of ecosystem functioning in experimental ecosystems", "description": "The effects of biodiversity on ecosystem functioning generally increase over time, but the underlying processes remain unclear. Using 26 long-term grassland and forest experimental ecosystems, we demonstrate that biodiversity-ecosystem functioning relationships strengthen mainly by greater increases in functioning in high-diversity communities in grasslands and forests. In grasslands, biodiversity effects also strengthen due to decreases in functioning in low-diversity communities. Contrasting trends across grasslands are associated with differences in soil characteristics.", "keywords": ["0106 biological sciences", "570", "grassland ecology", "Ecology and Evolutionary Biology", "Plant Sciences", "577", "soil biodiversity", "Biodiversity", "Forests", "15. Life on land", "Grassland", "01 natural sciences", "Article", "XXXXXX - Unknown", "Life Science", "ddc:570", "forest ecology", "Forest Sciences", "Institut f\u00fcr Biochemie und Biologie", "Ecosystem", "biodiversity", "ecosystem health"]}, "links": [{"href": "https://www.nature.com/articles/s41559-017-0325-1.pdf"}, {"href": "https://doi.org/10.1038/s41559-017-0325-1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Ecology%20%26amp%3B%20Evolution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/s41559-017-0325-1", "name": "item", "description": "10.1038/s41559-017-0325-1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41559-017-0325-1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-10-02T00:00:00Z"}}, {"id": "10.1046/j.1365-2486.2001.00388.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:17:59Z", "type": "Journal Article", "created": "2003-03-11", "title": "Chemistry And Decomposition Of Litter From Populus Tremuloides Michaux Grown At Elevated Atmospheric Co2 And Varying N Availability", "description": "Summary

It has been hypothesized that greater production of total nonstructural carbohydrates (TNC) in foliage grown under elevated atmospheric carbon dioxide (CO2) will result in higher concentrations of defensive compounds in tree leaf litter, possibly leading to reduced rates of decomposition and nutrient cycling in forest ecosystems of the future. To evaluate the effects of elevated atmospheric CO2on litter chemistry and decomposition, we performed a 111 day laboratory incubation with leaf litter of trembling aspen (Populus tremuloidesMichaux) produced at 36\uffe2\uff80\uff83Pa and 56\uffe2\uff80\uff83Pa CO2and two levels of soil nitrogen (N) availability. Decomposition was quantified as microbially respired CO2and dissolved organic carbon (DOC) in soil solution, and concentrations of nonstructural carbohydrates, N, carbon (C), and condensed tannins were monitored throughout the incubation. Growth under elevated atmospheric CO2did not significantly affect initial litter concentrations of TNC, N, or condensed tannins. Rates of decomposition, measured as both microbially respired CO2and DOC did not differ between litter produced under ambient and elevated CO2. Total C lost from the samples was 38\uffe2\uff80\uff83mg\uffe2\uff80\uff83g\uffe2\uff88\uff921litter as respired CO2and 138\uffe2\uff80\uff83mg\uffe2\uff80\uff83g\uffe2\uff88\uff921litter as DOC, suggesting short\uffe2\uff80\uff90term pulses of dissolved C in soil solution are important components of the terrestrial C cycle. We conclude that litter chemistry and decomposition in trembling aspen are minimally affected by growth under higher concentrations of CO2.

", "keywords": ["Ecology and Evolutionary Biology", "carbohydrates", "Quaking aspen", "forest-soil", "litter-plant", "nitrogen", "nitrogen-", "Microlysimeter", "soil-chemistry", "cycling-", "populus-tremuloides", "Geology and Earth Sciences", "Soil Carbon", "Microbiology of soils", "Carbon cycle", "04 agricultural and veterinary sciences", "GLOBAL-ECOLOGY", "chemical-composition", "Organic-matter", "soil-solution", "nutrient-availability", "Tannin", "leaf-litter", "Science", "decomposition-", "Nutrient enrichment", "Carbohydrates", "carbohydrates-", "respiration-", "carbon-dioxide-enrichment", "Nitrogen in soil", "michigan-", "carbon sinks", "C", "Nutrient budget of forests", "Litter", "Populus tremuloides", "Global Change", "tannins-", "Decomposition", "forest-litter", "Foliage", "Carbon dioxide effects on forest litter", "Climatic changes", "15. Life on land", "carbon-nitrogen-ratio", "Forest litter decomposition", "N Ratio", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "microbial-activities", "nitrogen-content"]}, "links": [{"href": "https://doi.org/10.1046/j.1365-2486.2001.00388.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.1365-2486.2001.00388.x", "name": "item", "description": "10.1046/j.1365-2486.2001.00388.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1046/j.1365-2486.2001.00388.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2001-01-01T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2004.00737.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:18:56Z", "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": "10.1111/j.1365-2486.2005.01001.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:18:57Z", "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": "10.1093/femsec/fiab059", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:18:27Z", "type": "Journal Article", "created": "2021-04-14", "title": "Fungus-bacterium associations are widespread in fungal cultures isolated from a semi-arid natural grassland in Germany", "description": "ABSTRACT

We report on a study that aimed at establishing a large soil\uffe2\uff80\uff93fungal culture collection spanning a wide taxonomic diversity and systematically screening the collection for bacterial associations. Fungal cultures were isolated from soil samples obtained from a natural grassland in eastern Germany and bacterial associations were assessed by PCR-amplification and sequencing of bacterial 16S rRNA. In addition, intraspecies genetic diversities of a subset of the isolated species were estimated by double-digest restriction associated DNA sequencing. A total of 688 fungal cultures, representing at least 106 fungal species from 36 different families, were obtained and even though clonal isolates were identified in almost all fungal species subjected to ddRAD-seq, relatively high genetic diversities could be observed in some of the isolated species. A total of 69% of the fungal isolates in our collection were found to be associated with bacteria and the most commonly identified bacterial genera were Pelomonas, Enterobacter and Burkholderia. Our results indicate that bacterial associations commonly occur in soil fungi, even if antibiotics are being applied during the isolation process, and provide a basis for the use of our culture collection in ecological experiments that want to acknowledge the importance of intraspecies genetic diversity.

", "keywords": ["DNA", " Bacterial", "0301 basic medicine", "bepress|Life Sciences|Ecology and Evolutionary Biology|Terrestrial and Aquatic Ecology", "0303 health sciences", "Terrestrial and Aquatic Ecology", "Bacteria", "Ecology and Evolutionary Biology", "Fungi", "Life Sciences", "15. Life on land", "bepress|Life Sciences|Ecology and Evolutionary Biology", "Grassland", "Soil", "03 medical and health sciences", "bepress|Life Sciences", "Germany", "RNA", " Ribosomal", " 16S", "Humans", "Bacteria ; Fungal-bacterial Interaction ; Soil Fungi ; Ddrad Sequencing", "Soil Microbiology"]}, "links": [{"href": "https://academic.oup.com/femsec/article-pdf/97/5/fiab059/37624504/fiab059.pdf"}, {"href": "https://doi.org/10.1093/femsec/fiab059"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/FEMS%20Microbiology%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1093/femsec/fiab059", "name": "item", "description": "10.1093/femsec/fiab059", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1093/femsec/fiab059"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-04-06T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2009.02058.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:19:01Z", "type": "Journal Article", "created": "2009-09-07", "title": "Maintenance Of Leaf N Controls The Photosynthetic Co2 Response Of Grassland Species Exposed To 9 Years Of Free-Air Co2 Enrichment", "description": "Abstract

Determining underlying physiological patterns governing plant productivity and diversity in grasslands are critical to evaluate species responses to future environmental conditions of elevated CO2 and nitrogen (N) deposition. In a 9\uffe2\uff80\uff90year experiment, N was added to monocultures of seven C3 grassland species exposed to elevated atmospheric CO2 (560\uffe2\uff80\uff83\uffce\uffbcmol\uffe2\uff80\uff83CO2\uffe2\uff80\uff83mol\uffe2\uff88\uff921) to evaluate how N addition affects CO2 responsiveness in species of contrasting functional groups. Functional groups differed in their responses to elevated CO2 and N treatments. Forb species exhibited strong down\uffe2\uff80\uff90regulation of leaf Nmass concentrations (\uffe2\uff88\uff9226%) and photosynthetic capacity (\uffe2\uff88\uff9228%) in response to elevated CO2, especially at high N supply, whereas C3 grasses did not. Hence, achieved photosynthetic performance was markedly enhanced for C3 grasses (+68%) in elevated CO2, but not significantly for forbs. Differences in access to soil resources between forbs and grasses may distinguish their responses to elevated CO2 and N addition. Forbs had lesser root biomass, a lower distribution of biomass to roots, and lower specific root length than grasses. Maintenance of leaf N, possibly through increased root foraging in this nutrient\uffe2\uff80\uff90poor grassland, was necessary to sustain stimulation of photosynthesis under long\uffe2\uff80\uff90term elevated CO2. Dilution of leaf N and associated photosynthetic down\uffe2\uff80\uff90regulation in forbs under elevated [CO2], relative to the C3 grasses, illustrates the potential for shifts in species composition and diversity in grassland ecosystems that have significant forb and grass components.

", "keywords": ["0106 biological sciences", "Nitrogen", "Science", "Ecology and Evolutionary Biology", "Poaceae C3 grass species", "carbon dioxide enrichment", "01 natural sciences", "nitrogen", "C 3 Grass Species", "FACE", "carbon cycle", "Species Functional Groups", "nitrogen cycle", "Free-air CO 2", "Carboxylation Rate", "Photosynthesis", "2. Zero hunger", "photosynthesis", "species diversity", "Geology and Earth Sciences", "carbon dioxide", "Carboxylation rate", "15. Life on land", "Species functional groups", "grasses", "Free-air CO2", "Keywords: angiosperm", "grassland"]}, "links": [{"href": "https://openresearch-repository.anu.edu.au/bitstream/1885/63064/5/Crous-etal_GCB2009-doi-online.pdf.jpg"}, {"href": "https://openresearch-repository.anu.edu.au/bitstream/1885/63064/7/01_Crous_Maintenance_of_leaf_N_controls_2009.pdf.jpg"}, {"href": "https://doi.org/10.1111/j.1365-2486.2009.02058.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.1365-2486.2009.02058.x", "name": "item", "description": "10.1111/j.1365-2486.2009.02058.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2009.02058.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-06-01T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2010.02376.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:19:01Z", "type": "Journal Article", "created": "2010-11-25", "title": "Fungal Community Composition And Function After Long-Term Exposure Of Northern Forests To Elevated Atmospheric Co2 And Tropospheric O-3", "description": "The long-term effects of rising atmospheric carbon dioxide (CO2) and tropospheric O3 concentrations on fungal communities in soil are not well understood. Here, we examine fungal community composition and the activities of cellobiohydrolase and N-acetylglucosaminidase (NAG) after 10 years of exposure to 1.5 times ambient levels of CO2 and O3 in aspen and aspen-birch forest ecosystems, and compare these results to earlier studies in the same long-term experiment.", "keywords": ["0106 biological sciences", "0301 basic medicine", "Elevated Ozone", "Geology and Earth Sciences", "Science", "Ecology and Evolutionary Biology", "Long\u2010Term", "Enzyme Activities", "Elevated Carbon Dioxide", "15. Life on land", "01 natural sciences", "03 medical and health sciences", "FACE", "13. Climate action", "Fungal Communities"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2486.2010.02376.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.1365-2486.2010.02376.x", "name": "item", "description": "10.1111/j.1365-2486.2010.02376.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2010.02376.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-01-05T00:00:00Z"}}, {"id": "10.1111/j.1461-0248.2006.00965.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:19:04Z", "type": "Journal Article", "created": "2006-09-12", "title": "Resource Availability Controls Fungal Diversity Across A Plant Diversity Gradient", "description": "Abstract

Despite decades of research, the ecological determinants of microbial diversity remain poorly understood. Here, we test two alternative hypotheses concerning the factors regulating fungal diversity in soil. The first states that higher levels of plant detritus production increase the supply of limiting resources (i.e. organic substrates) thereby increasing fungal diversity. Alternatively, greater plant diversity increases the range of organic substrates entering soil, thereby increasing the number of niches to be filled by a greater array of heterotrophic fungi. These two hypotheses were simultaneously examined in experimental plant communities consisting of one to 16 species that have been maintained for a decade. We used ribosomal intergenic spacer analysis (RISA), in combination with cloning and sequencing, to quantify fungal community composition and diversity within the experimental plant communities. We used soil microbial biomass as a temporally integrated measure of resource supply. Plant diversity was unrelated to fungal diversity, but fungal diversity was a unimodal function of resource supply. Canonical correspondence analysis (CCA) indicated that plant diversity showed a relationship to fungal community composition, although the occurrence of RISA bands and operational taxonomic units (OTUs) did not differ among the treatments. The relationship between fungal diversity and resource availability parallels similar relationships reported for grasslands, tropical forests, coral reefs, and other biotic communities, strongly suggesting that the same underlying mechanisms determine the diversity of organisms at multiple scales.

", "keywords": ["0301 basic medicine", "Plant Diversity", "0303 health sciences", "Science", "Ecology and Evolutionary Biology", "Fungi", "Biodiversity", "15. Life on land", "Plants", "Cedar Creek Natural History Area", "Fungal Diversity", "Microbial Biomass", "03 medical and health sciences", "Resource Availability", "Diversity-productivity Hypothesis", "Soil Microbiology", "Microbial Diversity"]}, "links": [{"href": "https://doi.org/10.1111/j.1461-0248.2006.00965.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1461-0248.2006.00965.x", "name": "item", "description": "10.1111/j.1461-0248.2006.00965.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1461-0248.2006.00965.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-09-12T00:00:00Z"}}, {"id": "10.1111/j.1461-0248.2009.01380.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:19:04Z", "type": "Journal Article", "created": "2009-09-15", "title": "Species-Specific Responses To Atmospheric Carbon Dioxide And Tropospheric Ozone Mediate Changes In Soil Carbon", "description": "Abstract

We repeatedly sampled the surface mineral soil (0\uffe2\uff80\uff9320\uffe2\uff80\uff83cm depth) in three northern temperate forest communities over an 11\uffe2\uff80\uff90year experimental fumigation to understand the effects of elevated carbon dioxide (CO2) and/or elevated phyto\uffe2\uff80\uff90toxic ozone (O3) on soil carbon (C). After 11\uffe2\uff80\uff83years, there was no significant main effect of CO2 or O3 on soil C. However, within the community containing only aspen (Populus tremuloides Michx.), elevated CO2 caused a significant decrease in soil C content. Together with the observations of increased litter inputs, this result strongly suggests accelerated decomposition under elevated CO2. In addition, an initial reduction in the formation of new (fumigation\uffe2\uff80\uff90derived) soil C by O3 under elevated CO2 proved to be only a temporary effect, mirroring trends in fine root biomass. Our results contradict predictions of increased soil C under elevated CO2 and decreased soil C under elevated O3 and should be considered in models simulating the effects of Earth\uffe2\uff80\uff99s altered atmosphere.

", "keywords": ["Decomposition", "Science", "Climate Change", "Aspen", "Ecology and Evolutionary Biology", "13 C", "Carbon Storage", "04 agricultural and veterinary sciences", "Carbon Dioxide", "Models", " Theoretical", "15. Life on land", "Carbon", "Trees", "Soil", "Ozone", "Populus", "Long-term", "Species Specificity", "13. Climate action", "Northern Temperate Forests", "0401 agriculture", " forestry", " and fisheries", "Global Change", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1111/j.1461-0248.2009.01380.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1461-0248.2009.01380.x", "name": "item", "description": "10.1111/j.1461-0248.2009.01380.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1461-0248.2009.01380.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-10-13T00:00:00Z"}}, {"id": "10.1111/j.1461-0248.2011.01692.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:19:05Z", "type": "Journal Article", "created": "2011-10-10", "title": "Forest Productivity Under Elevated Co2 And O3: Positive Feedbacks To Soil N Cycling Sustain Decade-Long Net Primary Productivity Enhancement By Co2", "description": "The accumulation of anthropogenic CO2 in the Earth's atmosphere, and hence the rate of climate warming, is sensitive to stimulation of plant growth by higher concentrations of atmospheric CO2. Here, we synthesise data from a field experiment in which three developing northern forest communities have been exposed to factorial combinations of elevated CO2 and O3. Enhanced net primary productivity (NPP) (c. 26% increase) under elevated CO2 was sustained by greater root exploration of soil for growth-limiting N, as well as more rapid rates of litter decomposition and microbial N release during decay. Despite initial declines in forest productivity under elevated O3, compensatory growth of O3-tolerant individuals resulted in equivalent NPP under ambient and elevated O3. After a decade, NPP has remained enhanced under elevated CO2 and has recovered under elevated O3 by mechanisms that remain un-calibrated or not considered in coupled climate-biogeochemical models simulating interactions between the global C cycle and climate warming.", "keywords": ["Forest Productivity", "0106 biological sciences", "N\u2010Cycle Feedbacks", "Elevated CO 2", "Science", "Ecology and Evolutionary Biology", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "12. Responsible consumption", "13. Climate action", "Elevated O 3", "0401 agriculture", " forestry", " and fisheries", "Global C Cycle"]}, "links": [{"href": "https://doi.org/10.1111/j.1461-0248.2011.01692.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1461-0248.2011.01692.x", "name": "item", "description": "10.1111/j.1461-0248.2011.01692.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1461-0248.2011.01692.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-10-10T00:00:00Z"}}, {"id": "10.1111/j.1469-8137.2004.01036.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:19:05Z", "type": "Journal Article", "created": "2004-04-13", "title": "Relationships Between Needle Nitrogen Concentration And Photosynthetic Responses Of Douglas-Fir Seedlings To Elevated Co2 And Temperature", "description": "Summary \u2022 Here we examined correlations between needle nitrogen concentration ([N]) and photosynthetic responses of Douglas-fir ( Pseudotsuga menziesii ) seedlings to growth in elevated temperatures and atmospheric carbon dioxide concentrations ([CO 2 ]). \u2022 Seedlings were grown in sunlit, climate-controlled chambers at ambient or ambient +3.5 \u00b0 C and ambient or ambient +180 \u00b5mol mol \u2212 1 CO 2 in a full factorial design. Photosynthetic parameters and needle [N] were measured six times over a 21-month period. \u2022 Needle [N] varied seasonally, and accounted for 30\u201050% of the variation in photosynthetic parameters. Across measurement periods, elevated temperature increased needle [N] by 26% and light-saturated net photosynthetic rates by 17%. Elevated [CO 2 ] decreased needle [N] by 12%, and reduced net photosynthetic rates measured at a common [CO 2 ], maximum carboxylation activity ( V c,max ) and electron transport capacity ( J max ), indicating photosynthetic acclimatization. Even so, elevated [CO 2 ] enhanced net photosynthesis, and this effect increased with needle [N]. \u2022 These results suggest that needle [N] may regulate photosynthetic responses of Douglas-fir to climate change. Further, needle [N] may be altered by climate change. However, effects of elevated [CO 2 ] on photosynthesis may be similar across growth temperatures.", "keywords": ["Other Ecology and Evolutionary Biology", "0106 biological sciences", "Douglas fir -- Growth", "13. Climate action", "Botany", "Acclimatization (Plants)", "Atmospheric carbon dioxide -- Physiological effect", "Photosynthesis", "15. Life on land", "01 natural sciences", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1111/j.1469-8137.2004.01036.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/New%20Phytologist", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1469-8137.2004.01036.x", "name": "item", "description": "10.1111/j.1469-8137.2004.01036.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1469-8137.2004.01036.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-03-11T00:00:00Z"}}, {"id": "10.1139/x75-087", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-29T16:19:24Z", "type": "Journal Article", "created": "2008-05-01", "title": "Wildfire Effects On Nutrient Distribution And Leaching In A Coniferous Ecosystem", "description": "

Distribution of nutrients after the Entiat fire in north central Washington was examined. This intense fire produced an average ash weight on the soil surface of 2900\uffe2\uff80\uff82kg/ha. The ash layer contained 23\uffe2\uff80\uff82kg/ha N, 314\uffe2\uff80\uff82kg/ha Ca, 54\uffe2\uff80\uff82kg/ha Mg, 70\uffe2\uff80\uff82kg/ha K, and 22\uffe2\uff80\uff82kg/ha Na. Nutrient losses during the fire as a result of combined volatilization and ash convection were 855\uffe2\uff80\uff82kg/ha N, 75\uffe2\uff80\uff82kg/ha Ca, 33\uffe2\uff80\uff82kg/ha Mg, 282\uffe2\uff80\uff82kg/ha K, and 698\uffe2\uff80\uff82kg/ha Na. Nitrogen loss apparently was proportional to fuel dry weight loss.Leaching of the ash layer in the 1st year after burning transferred a trace of N, 149\uffe2\uff80\uff82kg/ha Ca, 50\uffe2\uff80\uff82kg/ha Mg, 92\uffe2\uff80\uff82kg/ha K, and 33\uffe2\uff80\uff82kg/ha Na from the ash layer to the soil. Of the amounts leached from the ash, 134\uffe2\uff80\uff82kg/ha Ca, 48\uffe2\uff80\uff82kg/ha Mg, and 84\uffe2\uff80\uff82kg/ha K were retained in the 0-to 19-cm layer of soil. In the same interval a net loss of 29\uffe2\uff80\uff82kg/ha Na was observed from the 0-to 19-cm layer of soil.Cation leaching from ash layers was primarily related to water percolation through the ash. Equations are given that describe leaching of Ca, Mg, K, and Na from an average ash layer of the Entiat fire.

", "keywords": ["0106 biological sciences", "13. Climate action", "Ecology and Evolutionary Biology", "Plant Sciences", "0401 agriculture", " forestry", " and fisheries", "Agriculture", "Genetics and Genomics", "04 agricultural and veterinary sciences", "15. Life on land", "Forest Sciences", "01 natural sciences"], "contacts": [{"organization": "Grier, Charles C.", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1139/x75-087"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Canadian%20Journal%20of%20Forest%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1139/x75-087", "name": "item", "description": "10.1139/x75-087", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1139/x75-087"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1975-12-01T00:00:00Z"}}, {"id": "10.1139/x82-111", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-29T16:19:24Z", "type": "Journal Article", "created": "2008-05-01", "title": "Effects Of Thinning On Biomass Growth In Young Populus-Tremuloides Plots", "description": "

Stem, branch, and leaf biomass and leaf-area index (LAI) were estimated for 4 years of growth in plots of thinned and unthinned 7-year-old Populustremuloides Michx. In 1978, transmitted photosynthetically active radiation (PAR) was monitored to estimate percent PAR transmitted. Four years after thinning total aboveground biomass and LAI in the thinned plots exceeded prethinning levels, but were still much less than in the unthinned plots. Leaf biomass and LAI in the unthinned plots increased to 3900\uffe2\uff80\uff82kg ha\uffe2\uff88\uff921 and 5.7, respectively, but were still increasing in the thinned plots. Annual net stem and branch production during the study was relatively constant at about 5300\uffe2\uff80\uff82kg ha\uffe2\uff88\uff921 year\uffe2\uff88\uff921 in the unthinned plots, while net production in the thinned plots was still increasing. Transmitted PAR attenuated rapidly to LAI 3.5, approaching asymptote near LAI 5. Results suggest that, in the short term, thinning of young stands will decrease total aboveground biomass, but net annual biomass accumulation may not be greatly different between thinned and unthinned stands. LAI 3.5 may be an acceptable value for 11-year-old stands but should be permitted to increase to near LAI 5 in older stands.

", "keywords": ["0106 biological sciences", "Ecology and Evolutionary Biology", "Plant Sciences", "0401 agriculture", " forestry", " and fisheries", "Agriculture", "Genetics and Genomics", "04 agricultural and veterinary sciences", "15. Life on land", "Forest Sciences", "01 natural sciences"], "contacts": [{"organization": "Hocker, H. W., Jr.", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1139/x82-111"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Canadian%20Journal%20of%20Forest%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1139/x82-111", "name": "item", "description": "10.1139/x82-111", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1139/x82-111"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1982-12-01T00:00:00Z"}}, {"id": "10.17169/refubium-31202", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:19:58Z", "type": "Journal Article", "created": "2021-05-21", "title": "Global data on earthworm abundance, biomass, diversity and corresponding environmental properties", "description": "Abstract

Earthworms are an important soil taxon as ecosystem engineers, providing a variety of crucial ecosystem functions and services. Little is known about their diversity and distribution at large spatial scales, despite the availability of considerable amounts of local-scale data. Earthworm diversity data, obtained from the primary literature or provided directly by authors, were collated with information on site locations, including coordinates, habitat cover, and soil properties. Datasets were required, at a minimum, to include abundance or biomass of earthworms at a site. Where possible, site-level species lists were included, as well as the abundance and biomass of individual species and ecological groups. This global dataset contains 10,840 sites, with 184 species, from 60 countries and all continents except Antarctica. The data were obtained from 182 published articles, published between 1973 and 2017, and 17 unpublished datasets. Amalgamating data into a single global database will assist researchers in investigating and answering a wide variety of pressing questions, for example, jointly assessing aboveground and belowground biodiversity distributions and drivers of biodiversity change.

", "keywords": ["2401.17 Invertebrados", "0301 basic medicine", "592", "Data Descriptor", "Ecology and Evolutionary Biology", "earthworms", "Data Descriptor ; Biodiversity ; Biogeography ; Community ecology", "Plan_S-Compliant-OA", "https://purl.org/becyt/ford/1.6", "[SDV.EE.ECO] Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "Diversity data", "Biomass", "S Agriculture (General)", "Ekologia ja evoluutiobiologia", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "biodiversity", "2. Zero hunger", "maaper\u00e4", "abundance", "Data", "Diversity", "0303 health sciences", "Ecology", "Q", "eli\u00f6yhteis\u00f6t", "Biodiversity", "maaper\u00e4eli\u00f6st\u00f6", "ddc:", "Computer Science Applications", "Biogeography", "2401.06 Ecolog\u00eda animal", "international", "Statistics", " Probability and Uncertainty", "environment/Ecosystems", "Information Systems", "Statistics and Probability", "Ecolog\u00eda (Biolog\u00eda)", "570", "lierot", "Science", "Invertebrados", "577", "Global database", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "Library and Information Sciences", "574", "333", "soil", "eli\u00f6maantiede", "Education", "diversity", "03 medical and health sciences", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "BIODIVERSITY CHANGE", "Life Science", "Earthworms", "Datasets", "Animals", "Community ecology", "Oligochaeta", "https://purl.org/becyt/ford/1", "eartworm", "biogeography", "Ecosystem", "LAND-USE", "biomass", "500", "Biology and Life Sciences", "PLATFORM", "Global dataset", "Oligochaeta/classification", "500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie", "Ecolog\u00eda", "15. Life on land", "biodiversiteetti", "Environmental sciences", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "maaper\u00e4el\u00e4imist\u00f6", "Ecology", " evolutionary biology", "13. Climate action", "Earthworm", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", "570 Life sciences; biology", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "eartworm ; abundance ; biomass ; diversity", "COMMUNITIES", "community ecology"]}, "links": [{"href": "https://www.nature.com/articles/s41597-021-00912-z.pdf"}, {"href": "https://pub.epsilon.slu.se/25868/1/phillips_h_r_p_et_al_211019.pdf"}, {"href": "https://boris.unibe.ch/165726/1/48.__Global_data_on_earthworm_abundance__biomass__diversity_and_corresponding_environmental_properties.pdf"}, {"href": "https://www.iris.unict.it/bitstream/20.500.11769/509583/1/SCIENTIFIC%20DATA%20%282021%29%20GLOBAL%20DATA%20ON%20EARTHWORMS.pdf"}, {"href": "https://rau.repository.guildhe.ac.uk/id/eprint/16454/1/Phillips_et_al-2021-Scientific_Data.pdf"}, {"href": "https://doi.org/10.17169/refubium-31202"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Data", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.17169/refubium-31202", "name": "item", "description": "10.17169/refubium-31202", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.17169/refubium-31202"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-05-21T00:00:00Z"}}, {"id": "10.1890/02-0433", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:03Z", "type": "Journal Article", "created": "2007-06-04", "title": "Plant Diversity, Soil Microbial Communities, And Ecosystem Function: Are There Any Links?", "description": "A current debate in ecology centers on the extent to which ecosystem function depends on biodiversity. Here, we provide evidence from a long-term field manipulation of plant diversity that soil microbial communities, and the key ecosystem processes that they mediate, are significantly altered by plant species richness. After seven years of plant growth, we determined the composition and function of soil microbial communities beneath experimental plant diversity treatments containing 1-16 species. Microbial community bio- mass, respiration, and fungal abundance significantly increased with greater plant diversity, as did N mineralization rates. However, changes in microbial community biomass, activity, and composition largely resulted from the higher levels of plant production associated with greater diversity, rather than from plant diversity per se. Nonetheless, greater plant pro- duction could not explain more rapid N mineralization, indicating that plant diversity affected this microbial process, which controls rates of ecosystem N cycling. Greater N availability probably contributed to the positive relationship between plant diversity and productivity in the N-limited soils of our experiment, suggesting that plant-microbe in- teractions in soil are an integral component of plant diversity's influence on ecosystem", "keywords": ["2. Zero hunger", "soil C and N cycling", "Science", "Ecology and Evolutionary Biology", "microbial communities", "phospholipid fatty acid analysis", "04 agricultural and veterinary sciences", "15. Life on land", "plant communities", "gross N mineralization", "soil microbes", "ecosystem function", "0401 agriculture", " forestry", " and fisheries", "species richness", "gross N immobilization", "biodiversity"], "contacts": [{"organization": "Zak, Donald R., Holmes, William E., White, David C., Peacock, Aaron D., Tilman, David,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1890/02-0433"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/02-0433", "name": "item", "description": "10.1890/02-0433", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/02-0433"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2003-08-01T00:00:00Z"}}, {"id": "10.1890/03-5055", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:03Z", "type": "Journal Article", "created": "2007-06-06", "title": "Soil Nitrogen Cycling Under Elevated Co2: A Synthesis Of Forest Face Experiments", "description": "

The extent to which greater net primary productivity (NPP) will be sustained as the atmospheric CO2 concentration increases will depend, in part, on the long\uffe2\uff80\uff90term supply of N for plant growth. Over a two\uffe2\uff80\uff90year period, we used common field and laboratory methods to quantify microbial N, gross N mineralization, microbial N immobilization, and specific microbial N immobilization in three free\uffe2\uff80\uff90air CO2 enrichment experiments (Duke Forest, Oak Ridge, Rhinelander). In these experiments, elevated atmospheric CO2 has increased the input of above\uffe2\uff80\uff90 and belowground litter production, which fuels heterotrophic metabolism in soil. Nonetheless, we found no effect of atmospheric CO2 concentration on any microbial N cycling pool or process, indicating that greater litter production had not initially altered the microbial supply of N for plant growth. Thus, we have no evidence that changes in plant litter production under elevated CO2 will initially slow soil N availability and produce a negative feedback on NPP. Understanding the time scale over which greater plant production modifies microbial N demand lies at the heart of our ability to predict long\uffe2\uff80\uff90term changes in soil N availability and hence whether greater NPP will be sustained in a CO2\uffe2\uff80\uff90enriched atmosphere.

", "keywords": ["2. Zero hunger", "0106 biological sciences", "elevated CO2", "soil microorganisms", "Science", "Ecology and Evolutionary Biology", "microbial immobilization", "04 agricultural and veterinary sciences", "soil N cycling", "15. Life on land", "01 natural sciences", "6. Clean water", "climate change", "gross N mineralization", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "forest FACE experiments", "Forest Sciences"]}, "links": [{"href": "https://doi.org/10.1890/03-5055"}, {"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": "10.1890/03-5055", "name": "item", "description": "10.1890/03-5055", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/03-5055"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2003-12-01T00:00:00Z"}}, {"id": "10.1890/03-5120", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:03Z", "type": "Journal Article", "created": "2007-06-06", "title": "Nitrogen Deposition Modifies Soil Carbon Storage Through Changes In Microbial Enzymatic Activity", "description": "

Atmospheric nitrogen (N) deposition derived from fossil\uffe2\uff80\uff90fuel combustion, land clearing, and biomass burning is occurring over large geographical regions on nearly every continent. Greater ecosystem N availability can result in greater aboveground carbon (C) sequestration, but little is understood as to how soil C storage could be altered by N deposition. High concentrations of inorganic N accelerate the degradation of easily decomposable litter and slow the decomposition of recalcitrant litter containing large amounts of lignin. This pattern has been attributed to stimulation or repression of different sets of microbial extracellular enzymes. We hypothesized that soil C cycling in forest ecosystems with markedly different litter chemistry and decomposition rates would respond to anthropogenic N deposition in a manner consistent with the biochemical composition of the dominant vegetation. Specifically, oak\uffe2\uff80\uff90dominated ecosystems with low litter quality should gain soil C, and sugar maple ecosystems with high litter quality should lose soil C in response to high levels of N deposition (80 kg N\uffc2\uffb7ha\uffe2\uff88\uff921\uffc2\uffb7yr\uffe2\uff88\uff921). Consistent with this hypothesis, we observed over a three\uffe2\uff80\uff90year period a significant loss of soil C (20%) from a sugar maple\uffe2\uff80\uff90dominated ecosystem and a significant gain (10%) in soil C in an oak\uffe2\uff80\uff90dominated ecosystem, a result that appears to be mediated by the regulation of the microbial extracellular enzyme phenol oxidase. Elevated N deposition resulted in changes in soil carbon that were ecosystem specific and resulted from the divergent regulatory control of microbial extracellular enzymes by soil N availability.

", "keywords": ["forests", "13. Climate action", "Science", "Ecology and Evolutionary Biology", "soil enzyme activities", "0401 agriculture", " forestry", " and fisheries", "northern temperate", "04 agricultural and veterinary sciences", "15. Life on land", "Michigan (USA)", "carbon sequestration", "N deposition"], "contacts": [{"organization": "Waldrop, Mark P., Zak, Donald R., Sinsabaugh, Robert L., Gallo, Marcy, Lauber, Chris,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1890/03-5120"}, {"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": "10.1890/03-5120", "name": "item", "description": "10.1890/03-5120", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/03-5120"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-08-01T00:00:00Z"}}, {"id": "10.1890/06-1819.1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:04Z", "type": "Journal Article", "created": "2007-10-23", "title": "Atmospheric Co2 And O-3 Alter The Flow Of N-15 In Developing Forest Ecosystems", "description": "Anthropogenic O3 and CO2-induced declines in soil N availability could counteract greater plant growth in a CO2-enriched atmosphere, thereby reducing net primary productivity (NPP) and the potential of terrestrial ecosystems to sequester anthropogenic CO2. Presently, it is uncertain how increasing atmospheric CO2 and O3 will alter plant N demand and the acquisition of soil N by plants as well as the microbial supply of N from soil organic matter. To address this uncertainty, we initiated an ecosystem-level 15N tracer experiment at the Rhinelander (Wisconsin, USA) free air CO2-O3 enrichment (FACE) facility to understand how projected increases in atmospheric CO2 and 03 alter the distribution and flow of N in developing northern temperate forests. Tracer amounts of 15NH4+ were applied to the forest floor of developing Populus tremuloides and P. tremuloides-Betula papyrifera communities that have been exposed to factorial CO2 and O3 treatments for seven years. One year after isotope addition, both forest communities exposed to elevated CO2 obtained greater amounts of 15N (29%) and N (40%) from soil, despite no change in soil N availability or plant N-use efficiency. As such, elevated CO2 increased the ability of plants to exploit soil for N, through the development of a larger root system. Conversely, elevated O3 decreased the amount of 15N (-15%) and N (-29%) in both communities, a response resulting from lower rates of photosynthesis, decreases in growth, and smaller root systems that acquired less soil N. Neither CO2 nor 03 altered the amount of N or 15N recovery in the forest floor, microbial biomass, or soil organic matter. Moreover, we observed no interaction between CO2 and 03 on the amount of N or 15N in any ecosystem pool, suggesting that 03 could exert a negative effect regardless of CO2 concentration. In a CO2-enriched atmosphere, greater belowground growth and a more thorough exploitation of soil for growth-limiting N is an important mechanism sustaining the enhancement of NPP in developing forests (0-8 years following establishment). However, as CO2 accumulates in the Earth's atmosphere, future O3 concentrations threaten to diminish the enhancement of plant growth, decrease plant N acquisition, and lessen the storage of anthropogenic C in temperate forests.", "keywords": ["0106 biological sciences", "Nitrogen", "Science", "Ecology and Evolutionary Biology", "Plant Roots", "01 natural sciences", "forest floor", "Soil", "developing forest", "Wisconsin", "atmospheric O3", "Ozone", "soil organic matter", "Populus tremuloides", "Biomass", "USA", "Ecosystem", "Soil Microbiology", "atmospheric CO2", "Nitrogen Isotopes", "15N", "plant N uptake", "microbial immobilization", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "root system size", "Populus", "N cycling", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Betula papyrifera"]}, "links": [{"href": "https://doi.org/10.1890/06-1819.1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/06-1819.1", "name": "item", "description": "10.1890/06-1819.1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/06-1819.1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-10-01T00:00:00Z"}}, {"id": "10.1890/10-0660.1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:05Z", "type": "Journal Article", "created": "2011-06-10", "title": "Fire effects on temperate forest soil C and N storage", "description": "Temperate forest soils store globally significant amounts of carbon (C) and nitrogen (N). Understanding how soil pools of these two elements change in response to disturbance and management is critical to maintaining ecosystem services such as forest productivity, greenhouse gas mitigation, and water resource protection. Fire is one of the principal disturbances acting on forest soil C and N storage and is also the subject of enormous management efforts. In the present article, we use meta-analysis to quantify fire effects on temperate forest soil C and N storage. Across a combined total of 468 soil C and N response ratios from 57 publications (concentrations and pool sizes), fire had significant overall effects on soil C (-26%) and soil N (-22%). The impacts of fire on forest floors were significantly different from its effects on mineral soils. Fires reduced forest floor C and N storage (pool sizes only) by an average of 59% and 50%, respectively, but the concentrations of these two elements did not change. Prescribed fires caused smaller reductions in forest floor C and N storage (-46% and -35%) than wildfires (-67% and -69%), and the presence of hardwoods also mitigated fire impacts. Burned forest floors recovered their C and N pools in an average of 128 and 103 years, respectively. Among mineral soils, there were no significant changes in C or N storage, but C and N concentrations declined significantly (-11% and -12%, respectively). Mineral soil C and N concentrations were significantly affected by fire type, with no change following prescribed burns, but significant reductions in response to wildfires. Geographic variation in fire effects on mineral soil C and N storage underscores the need for region-specific fire management plans, and the role of fire type in mediating C and N shifts (especially in the forest floor) indicates that averting wildfires through prescribed burning is desirable from a soils perspective.", "keywords": ["0106 biological sciences", "Nitrogen", "Science", "soil nitrogen", "Ecology and Evolutionary Biology", "forest management", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Carbon", "Fires", "Trees", "meta-analysis", "Soil", "carbon sinks", "13. Climate action", "temperate forests", "0401 agriculture", " forestry", " and fisheries", "soil carbon", "fire", "Ecosystem"], "contacts": [{"organization": "Lucas E. Nave, Lucas E. Nave, Eric D. Vance, Christopher W. Swanston, Peter S. Curtis,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1890/10-0660.1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/10-0660.1", "name": "item", "description": "10.1890/10-0660.1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/10-0660.1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-06-01T00:00:00Z"}}, {"id": "10.2136/sssaj2006.0069", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:28Z", "type": "Journal Article", "created": "2007-06-30", "description": "

We resampled one of the earliest replicated experimental sites used to investigate the impacts of native tropical tree species on soil properties, to examine longer term effects to 1\uffe2\uff80\uff90m depth. The mono\uffe2\uff80\uff90dominant stands, established in abandoned pasture in 1988 at La Selva Biological Station, Costa Rica, contained six species, including one exotic, Pinus patula ssp. tecunumanii (Eguiluz & J.P. Perry) Styles, and five native species: Pentaclethra macroloba (Willd.) Ktze (N2\uffe2\uff80\uff90fixing); Hyeronima alchorneoides Allemao; Virola koschnyi Warb.; Vochysia ferruginea Mart.; and Vochysia guatemalensis J.D. Smith. Soil organic carbon (SOC) differed significantly among species in the surface (0\uffe2\uff80\uff9315\uffe2\uff80\uff90cm) layer, ranging from 44.5 to 55.1 g kg\uffe2\uff88\uff921, compared with 46.6 and 50.3 g kg\uffe2\uff88\uff921 in abandoned pasture and mature forest, respectively. The change in surface SOC over 15 yr ranged from \uffe2\uff88\uff920.03 to 0.66 Mg C ha\uffe2\uff88\uff921 yr\uffe2\uff88\uff921 The species differed in the quantity and chemical composition of their detrital production. Soil organic C was significantly correlated with fine\uffe2\uff80\uff90root growth, but not with aboveground detrital inputs. Soil organic C increased with potential C mineralization on a grams of C basis, indicating that species influenced both the quality and quantity of SOC. Contrary to expectations, SOC declined with increasing fine\uffe2\uff80\uff90root lignin concentrations, indicating that lignin\uffe2\uff80\uff90derived C did not dominate refractory SOC pools. We hypothesize that differences among species in the capacity to increase SOC stocks involved fine\uffe2\uff80\uff90root traits that promoted soil microbial turnover and, thus, greater production of recalcitrant, microbial\uffe2\uff80\uff90derived C fractions.

", "keywords": ["soil organic carbon", "580", "Ecology and Evolutionary Biology", "Organic Chemistry", "Natural Resources Management and Policy", "lignin", "0401 agriculture", " forestry", " and fisheries", "Forest Biology", "tropical tree", "04 agricultural and veterinary sciences", "15. Life on land", "630", "fine-root growth"]}, "links": [{"href": "https://doi.org/10.2136/sssaj2006.0069"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Science%20Society%20of%20America%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2136/sssaj2006.0069", "name": "item", "description": "10.2136/sssaj2006.0069", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2136/sssaj2006.0069"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-07-01T00:00:00Z"}}, {"id": "10.2136/sssaj2009.0095", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:30Z", "type": "Journal Article", "created": "2010-01-07", "description": "

Laboratory and field CO2 efflux measurements were used to investigate the influence of soil organic C (SOC) decomposability and soil microclimate on summer SOC dynamics in seasonally dry montane forest and rangeland soils at the T.W. Daniel Experimental Forest in northern Utah. Soil respiration, soil temperature, and soil moisture content (SMC) were measured between July and October 2004 and 2005 in 12 control and 12 irrigated plots laid out in a randomized block design in adjacent forest (aspen or conifer) and rangeland (sagebrush [Artemisia tridentata Nutt.] or grass\uffe2\uff80\uff93forb) sites. Irrigated plots received a single water addition of 2.5 cm in July 2004 and two additions in July 2005. The SOC decomposability in mineral soil samples (0\uffe2\uff80\uff9310, 10\uffe2\uff80\uff9320, and 20\uffe2\uff80\uff9330 cm) was derived from 10\uffe2\uff80\uff90mo lab incubations. The amount of SOC accumulated in the A horizon (16 Mg ha\uffe2\uff88\uff921) and the top 1 m (74 Mg ha\uffe2\uff88\uff921) of the mineral soil did not differ significantly among vegetation type, but upper forest soils tended to contain more decomposable SOC than rangeland soils. The CO2 efflux measured in the field varied significantly with vegetation cover (aspen > conifer = sagebrush > grass\uffe2\uff80\uff93forb), ranging from 12 kg CO2\uffe2\uff80\uff93C ha\uffe2\uff88\uff921 d\uffe2\uff88\uff921 in aspen to 5 kg CO2\uffe2\uff80\uff93C ha\uffe2\uff88\uff921 d\uffe2\uff88\uff921 in the grass\uffe2\uff80\uff93forb sites. It increased (\uffe2\uff88\uffbc35%) immediately following water additions, with treatment effects dissipating within 1 wk. Soil temperature and SMC, which were negatively correlated (r = \uffe2\uff88\uff920.53), together explained \uffe2\uff88\uffbc60% of the variability in summer soil respiration. Our study suggests that vegetation cover influences summer CO2 efflux rates through its effect on SOC quality and the soil microclimate.

", "keywords": ["Ecology and Evolutionary Biology", "Plant Sciences", "0401 agriculture", " forestry", " and fisheries", "Agriculture", "Genetics and Genomics", "04 agricultural and veterinary sciences", "15. Life on land", "Forest Sciences", "01 natural sciences", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Olsen, Harley R., Van Miegroet, Helga,", "roles": ["creator"]}]}, "links": [{"href": "https://digitalcommons.usu.edu/context/docdan/article/1140/viewcontent/j.pdf"}, {"href": "https://doi.org/10.2136/sssaj2009.0095"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Science%20Society%20of%20America%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2136/sssaj2009.0095", "name": "item", "description": "10.2136/sssaj2009.0095", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2136/sssaj2009.0095"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-01-01T00:00:00Z"}}, {"id": "10.2136/sssaj2011.0364", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-29T16:20:31Z", "type": "Journal Article", "created": "2012-10-05", "description": "

This study compares the amount, distribution, and stability of soil organic carbon (SOC) in six paired quaking aspen (Populus tremuloides Michx) and conifer plots at three locations in northern Utah, to assess the influence of vegetation cover and other biotic and abiotic drivers on SOC storage capacity in seasonally dry environments. Aspen soils accumulated significantly more SOC in the mineral soil (0\uffe2\uff80\uff9360 cm) (92.2 \uffc2\uffb1 26.7 Mg C ha\uffe2\uff88\uff921 vs. 66.9 \uffc2\uffb1 18.6 Mg C ha\uffe2\uff88\uff921 under conifers), and despite thicker O horizons under conifers that contained higher amounts of SOC (11.6 \uffc2\uffb1 8.8 Mg C ha\uffe2\uff88\uff921 under conifers vs. 1.65 \uffc2\uffb1 0.38 Mg C ha\uffe2\uff88\uff921 in aspen), across all sites SOC storage was 25% higher under aspen. Shallow soil cores (0\uffe2\uff80\uff9315 cm) did not indicate significant differences in SOC with vegetation type. The SOC under aspen was also more stable, indicated by well\uffe2\uff80\uff90developed mollic epipedon (A horizon 38\uffe2\uff80\uff9353\uffe2\uff80\uff90cm thick vs. 5.5\uffe2\uff80\uff9334 cm under conifers), slower turnover of surficial SOC deduced from long\uffe2\uff80\uff90term laboratory incubations (67.7 \uffc2\uffb1 15.7 g CO2\uffe2\uff80\uff93C per kg C for aspen vs. 130.9 \uffc2\uffb1 41.3 g CO2\uffe2\uff80\uff93C per kg C for conifer soils), and a greater preponderance of mineral\uffe2\uff80\uff90associated SOC (55\uffc2\uffb113% in aspen vs. 41\uffc2\uffb113% in conifer). Aspen soils were generally wetter and we hypothesize that rapid litter turnover coupled with greater water supply may have caused greater downward redistribution and adsorption of dissolved organic carbon (DOC) in aspen soils.

", "keywords": ["Ecology and Evolutionary Biology", "Wood Science and Pulp", "0401 agriculture", " forestry", " and fisheries", "Forest Biology", "Paper Technology", "04 agricultural and veterinary sciences", "15. Life on land", "Entomology", "Forest Management", "Forest Sciences"], "contacts": [{"organization": "Woldesalassie, Mical, Miegroet, Helga Van, Gruselle, Marie C\u00c3\u00a9cile, Hambly, Nickoli,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2136/sssaj2011.0364"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Science%20Society%20of%20America%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2136/sssaj2011.0364", "name": "item", "description": "10.2136/sssaj2011.0364", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2136/sssaj2011.0364"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-10-05T00:00:00Z"}}, {"id": "10.2307/1940261", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:38Z", "type": "Journal Article", "created": "2006-05-09", "title": "Effects Of Different Resource Additions On Species-Diversity In An Annual Plant Community", "description": "

A commonly observed phenomenon in plant communities is that the addition of a limiting resource leads to an increase in productivity and a decrease in species diversity. We tested the hypothesis that the mechanism underlying this pattern is a disproportionate increase in mortality of smaller or shade\uffe2\uff80\uff94intolerant species in more productive sites caused by reduction of light levels. We added water and/or one of three nutrients (nitrogen, phosphorus, and potassium) to a 1st\uffe2\uff80\uff94old\uffe2\uff80\uff94field community dominated by weedy annuals and measured effect on productivity, species composition, diversity, and light levels after one growing season. Diversity was not clearly related to productivity in this experiment. Watering increased productivity, but, contrary to expectations, had no effect on density of surviving plants, species diversity, or abundance of low\uffe2\uff80\uff94growing species. Almost all the increase in biomass with watering was due to a positive response by Ambrosia artemisiifolia, an upright annual that was the most common species in the canopy in all treatments. The addition of nitrogen had only a small positive effect on productivity, but strongly decreased density of surviving plants, species diversity, and abundance of most low\uffe2\uff80\uff94growing species. Only Ambrosia increased in abundance with nitrogen addition. The phophorus and potassium additions had little effect on the community. We suggest that the high mortality and low diversity in the nitrogen addition plots, but not in the more productive watered plots, was due to limitation by nitrogen earlier than limitation by water during the growing season. The consequence was earlier canopy closure and greater mortality due to light limitation.

", "keywords": ["2. Zero hunger", "0106 biological sciences", "annual plants", "Lepidium campestre", "productivity", "species diversity", "Panicum capillare", "Science", "Ecology and Evolutionary Biology", "nitrogen limitation", "water limitation", "resource additions", "15. Life on land", "01 natural sciences", "Chenopodium album", "Ambrosia artemisiifolia"], "contacts": [{"organization": "Thomas E. Miller, Thomas E. Miller, Deborah E. Goldberg,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/1940261"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1940261", "name": "item", "description": "10.2307/1940261", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1940261"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1990-02-01T00:00:00Z"}}, {"id": "10.2307/2640985", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:39Z", "type": "Journal Article", "created": "2006-04-17", "description": "Elevated atmospheric CO2 has the potential to increase the production and alter the chemistry of organic substrates entering soil from plant production, the magnitude of which is constrained by soil-N availability. Because microbial growth in soil is limited by substrate inputs from plant production, we reasoned that changes in the amount and chemistry of these organic substrates could affect the composition of soil microbial com- munities and the cycling of N in soil. We studied microbial community composition and soil-N transformations beneath Populus tremuloides Michx. growing under experimental atmospheric CO2 (35.7 and 70.7 Pa) and soil-N-availability (low N 5 61 ng N\u00b7g 21 \u00b7d 21 and high N 5 319 ng N\u00b7g 21 \u00b7d 21 ) treatments. Atmospheric CO2 concentration was modified in large, open-top chambers, and we altered soil-N availability in open-bottom root boxes by mixing different proportions of A and C horizon material. We used phospholipid fatty-acid analysis to gain insight into microbial community composition and coupled this analysis to measurements of soil-N transformations using 15 N-pool dilution techniques. The infor- mation presented here is part of an integrated experiment designed to elucidate the phys- iological mechanisms controlling the flow of C and N in the plant-soil system. Our ob- jectives were (1) to determine whether changes in plant growth and tissue chemistry alter microbial community composition and soil-N cycling in response to increasing atmospheric CO2 and soil-N availability and (2) to integrate the results of our experiment into a synthesis of elevated atmospheric CO2 and the cycling of C and N in terrestrial ecosystems. After 2.5 growing seasons, microbial biomass, gross N mineralization, microbial im- mobilization, and nitrification (gross and net) were equivalent at ambient and elevated CO2, suggesting that increases in fine-root production and declines in fine-root N concentration were insufficient to alter the influence of native soil organic matter on microbial physiology; this was the case in both low- and high-N soil. Similarly, elevated CO2 did not alter the proportion of bacterial, actinomycetal, or fungal phospholipid fatty acids in low-N or high-N soil, indicating that changes in substrate input from greater plant growth under elevated CO2 did not alter microbial community composition. Our results differ from a substantial number of studies reporting increases and decreases in soil-N cycling under elevated CO 2. From our analysis, it appears that soil-N cycling responds to elevated atmospheric CO 2 in experimental situations where plant roots have fully colonized the soil and root-associated C inputs are sufficient to modify the influence of native soil organic matter on microbial physiology. In young developing ecosystems where plant roots have not fully exploited the soil, microbial metabolism appears to be regulated by relatively large pools of soil organic matter, rather than by the additional input of organic substrates under elevated CO 2.", "keywords": ["measurement-", "soil microorganisms", "Ecology and Evolutionary Biology", "nitrogen-: cycling-", "feedback", "microbial community composition", "techniques-", "Environmental-Sciences)", "01 natural sciences", "litter-plant", "biomass-", "gross and net", "124-38-9: CARBON DIOXIDE", "Spermatophytes-", "cycling-", "soil-organic-matter", "mineralization", "Spermatophyta-", "responses-", "phospholipid-fatty-acids", "2. Zero hunger", "Climatology- (Environmental-Sciences)", "Angiosperms-", "Angiospermae-", "Plants-", "global climate change", "microbial immobilization", "nutrient-", "Soil-Science", "6. Clean water", "metabolism-", "soil-N transformations", "transformation-", "substrates-", "7727-37-9: NITROGEN", "atmosphere-", "elevated atmospheric", "570", "nitrification-", "nitrogen immobilization", "Science", "Vascular-Plants", "poplars-", "phospholipid fatty acids (PFLAs)", "carbon-dioxide", "growth-", "soil-microbial-community-composition", "Salicaceae-: Dicotyledones-", "microbial-flora", "Populus tremuloides", "Plantae-", "organic-matter", "consortia-", "0105 earth and related environmental sciences", "communities-", "ecosystem", "analysis-", "atmospheric CO2 and soil-N availability", "soil-availability", "mineralization-", "carbon dioxide", "fatty-acids", "15. Life on land", "substrate-input", "Populus-tremuloides (Salicaceae-)", "13. Climate action", "roots-", "Terrestrial-Ecology (Ecology-", "composition-", "Dicots-", "immobilization-", "seasons-", "ecosystems-"], "contacts": [{"organization": "Zak, Donald R., Pregitzer, Kurt S., Curtis, Peter S., Holmes, William E.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/2640985"}, {"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": "10.2307/2640985", "name": "item", "description": "10.2307/2640985", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2640985"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2000-02-01T00:00:00Z"}}, {"id": "10.5194/bgd-6-607-2009", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:21:56Z", "created": "2010-04-29", "description": "

Abstract. Denitrification within riparian buffers may trade reduced nonpoint source pollution of surface waters for increased greenhouse gas emissions resulting from denitrification-produced nitrous oxide (N2O). However, little is known about the N2O emission within conservation buffers established for water quality improvement or of the importance of short-term N2O peak emission following rewetting dry soils and thawing frozen soils. Such estimates are important in reducing uncertainties in current Intergovernmental Panel on Climate Change (IPCC) methodologies estimating soil N2O emission which are based on N inputs. This study contrasts N2O emission from riparian buffer systems of three perennial vegetation types and an adjacent crop field, and compares measured N2O emission with estimates based on the IPCC methodology. We measured soil properties, N inputs, weather conditions and N2O fluxes from soils in forested riparian buffers, warm-season and cool-season grass filters, and a crop field located in the Bear Creek watershed in central Iowa, USA. Cumulative N2O emissions from soils in all riparian buffers (5.8 kg N2O-N ha\uffe2\uff88\uff921 in 2006\uffe2\uff80\uff932007) were significantly less than those from crop field soils (24.0 kg N2O-N ha\uffe2\uff88\uff921 in 2006\uffe2\uff80\uff932007), with no difference among the buffer vegetation types. While N2O peak emissions (up to 70-fold increase) following the rewetting of dry soils and thawing of frozen soils comprised 46\uffe2\uff80\uff9370% of the annual N2O emissions from soils in the crop field, soils in the riparian buffers were less sensitive to such events (3 to 10-fold increase). The ratio of N2O emission to N inputs within riparian buffers (0.02) was smaller than those of crop field (0.07). These results indicate that N2O emission from soils within the riparian buffers established for water quality improvement should not be considered a major source of N2O emission compared to crop field emission. The observed large difference between measured N2O emissions and those estimated using the IPCC's recommended methodology (i.e., 87% underestimation) in the crop field suggests that the IPCC methodology may underestimate N2O emission in the regions where soil rewetting and thawing are common, and that conditions predicted by future climate-change scenarios may increase N2O emissions.

", "keywords": ["2. Zero hunger", "Environmental Indicators and Impact Assessment", "Sustainability", "13. Climate action", "Ecology and Evolutionary Biology", "Soil Science", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Forest Sciences", "630", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.5194/bgd-6-607-2009"}, {"rel": "self", "type": "application/geo+json", "title": "10.5194/bgd-6-607-2009", "name": "item", "description": "10.5194/bgd-6-607-2009", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/bgd-6-607-2009"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-01-13T00:00:00Z"}}, {"id": "1893/33794", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:25:33Z", "type": "Journal Article", "created": "2021-12-30", "title": "Global maps of soil temperature", "description": "Abstract

Research in global change ecology relies heavily on global climatic grids derived from estimates of air temperature in open areas at around 2\uffc2\uffa0m above the ground. These climatic grids do not reflect conditions below vegetation canopies and near the ground surface, where critical ecosystem functions occur and most terrestrial species reside. Here, we provide global maps of soil temperature and bioclimatic variables at a 1\uffe2\uff80\uff90km2resolution for 0\uffe2\uff80\uff935 and 5\uffe2\uff80\uff9315\uffc2\uffa0cm soil depth. These maps were created by calculating the difference (i.e. offset) between in situ soil temperature measurements, based on time series from over 1200 1\uffe2\uff80\uff90km2pixels (summarized from 8519 unique temperature sensors) across all the world's major terrestrial biomes, and coarse\uffe2\uff80\uff90grained air temperature estimates from ERA5\uffe2\uff80\uff90Land (an atmospheric reanalysis by the European Centre for Medium\uffe2\uff80\uff90Range Weather Forecasts). We show that mean annual soil temperature differs markedly from the corresponding gridded air temperature, by up to 10\uffc2\uffb0C (mean\uffc2\uffa0=\uffc2\uffa03.0\uffc2\uffa0\uffc2\uffb1\uffc2\uffa02.1\uffc2\uffb0C), with substantial variation across biomes and seasons. Over the year, soils in cold and/or dry biomes are substantially warmer (+3.6\uffc2\uffa0\uffc2\uffb1\uffc2\uffa02.3\uffc2\uffb0C) than gridded air temperature, whereas soils in warm and humid environments are on average slightly cooler (\uffe2\uff88\uff920.7\uffc2\uffa0\uffc2\uffb1\uffc2\uffa02.3\uffc2\uffb0C). The observed substantial and biome\uffe2\uff80\uff90specific offsets emphasize that the projected impacts of climate and climate change on near\uffe2\uff80\uff90surface biodiversity and ecosystem functioning are inaccurately assessed when air rather than soil temperature is used, especially in cold environments. The global soil\uffe2\uff80\uff90related bioclimatic variables provided here are an important step forward for any application in ecology and related disciplines. Nevertheless, we highlight the need to fill remaining geographic gaps by collecting more in situ measurements of microclimate conditions to further enhance the spatiotemporal resolution of global soil temperature products for ecological applications.