Rice exudation patterns changed in response to P deficiency. Higher exudation rates were associated with lower biomass production. Total carboxylate exudation rates mostly decreased under P-limiting conditions.
AbstractWithin the rhizosphere, root exudates are believed to play an important role in plant phosphorus (P) acquisition. This could be particularly beneficial in upland rice production where P is often limited. However, knowledge gaps remain on how P deficiency shapes quality and quantity of root exudation in upland rice genotypes. We therefore investigated growth, plant P uptake, and root exudation patterns of two rice genotypes differing in P efficiency in semi-hydroponics at two P levels (low P\uffe2\uff80\uff89=\uffe2\uff80\uff891\uffc2\uffa0\uffc2\uffb5M, adequate P\uffe2\uff80\uff89=\uffe2\uff80\uff89100\uffc2\uffa0\uffc2\uffb5M). Root exudates were collected hydroponically 28 and 40\uffc2\uffa0days after germination to analyze total carbon (C), carbohydrates, amino acids, phenolic compounds spectrophotometrically and carboxylates using a targeted LC\uffe2\uff80\uff93MS approach. Despite their reported role in P solubilization, we observed that carboxylate exudation rates per unit root surface area were not increased under P deficiency. In contrast, exudation rates of total C, carbohydrates, amino acids and phenolics were mostly enhanced in response to low P supply. Overall, higher exudation rates were associated with lower biomass production in the P-inefficient genotype Nerica4, whereas the larger root system with lower C investment (per unit root surface area) in root exudates of the P-efficient DJ123 allowed for better plant growth under P deficiency. Our results reveal new insights into genotype-specific resource allocation in rice under P-limiting conditions that warrant follow-up research including more genotypes.
", "keywords": ["Genotype", "Hydroponics", "carbohydrates ; phenolics ; amino acids ; carboxylates ; phosphorus", "Plant Exudates", "Rhizosphere", "Original Article", "Oryza", "Phosphorus", "Biomass", "Amino Acids", "Plant Roots", "Carbon"], "contacts": [{"organization": "Henning Schwalm, Christiana Staudinger, Mohammad-Reza Hajirezaei, Eva Mundschenk, Alireza Golestanifard, Maire Holz, Matthias Wissuwa, Eva Oburger,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s00425-024-04556-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Planta", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00425-024-04556-2", "name": "item", "description": "10.1007/s00425-024-04556-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00425-024-04556-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-10-23T00:00:00Z"}}, {"id": "10.1007/s003740050613", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:20Z", "type": "Journal Article", "created": "2002-08-25", "title": "Changes In Soil Microbial Biomass, Metabolic Quotient, And Organic Matter Turnover Under Hieracium (H-Pilosella L.)", "description": "Open AccessPeer reviewed", "keywords": ["2. Zero hunger", "Hieracium invasion", "Organic C and N turnover", "Microbial biomass", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "High country", "Tussock grassland"]}, "links": [{"href": "https://doi.org/10.1007/s003740050613"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biology%20and%20Fertility%20of%20Soils", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s003740050613", "name": "item", "description": "10.1007/s003740050613", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s003740050613"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1999-12-10T00:00:00Z"}}, {"id": "10.1007/s00442-003-1198-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:20Z", "type": "Journal Article", "created": "2014-12-22", "title": "Response Of Ndvi, Biomass, And Ecosystem Gas Exchange To Long-Term Warming And Fertilization In Wet Sedge Tundra", "description": "This study explores the relationship between the normalized difference vegetation index (NDVI), aboveground plant biomass, and ecosystem C fluxes including gross ecosystem production (GEP), ecosystem respiration (ER) and net ecosystem production. We measured NDVI across long-term experimental treatments in wet sedge tundra at the Toolik Lake LTER site, in northern Alaska. Over 13 years, N and P were applied in factorial experiments (N, P and N + P), air temperature was increased using greenhouses with and without N + P fertilizer, and light intensity (photosynthetically active photon flux density) was reduced by 50% using shade cloth. Within each treatment plot, NDVI, aboveground biomass and whole-system CO(2) flux measurements were made at the same sampling points during the peak-growing season of 2001. We found that across all treatments, NDVI is correlated with aboveground biomass ( r(2)=0.84), GEP ( r(2)=0.75) and ER ( r(2)=0.71), providing a basis for linking remotely sensed NDVI to aboveground biomass and ecosystem carbon flux.", "keywords": ["Nitrogen", "Phosphorus", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "01 natural sciences", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Gases", "Photosynthesis", "Spacecraft", "Ecosystem", "Plant Physiological Phenomena", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s00442-003-1198-3"}, {"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/s00442-003-1198-3", "name": "item", "description": "10.1007/s00442-003-1198-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-003-1198-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2003-03-01T00:00:00Z"}}, {"id": "10.1007/s00442-004-1494-6", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-06-24T16:15:21Z", "type": "Journal Article", "created": "2004-03-09", "title": "Competitive Effect Versus Competitive Response Of Invasive And Native Wetland Plant Species", "description": "Non-native plants can have adverse effects on ecosystem structure and processes by invading and out-competing native plants. I examined the hypothesis that mature plants of non-native and native species exert differential effects on the growth of conspecific and heterospecific seedlings by testing predictions that (1) invasive vegetation has a stronger suppressive effect on seedlings than does native vegetation, (2) seedlings of invasive species are better able to grow in established vegetation than are native seedlings, and (3) invasive species facilitate conspecific and inhibit heterospecific seedling growth. I measured growth rates and interaction intensities for seedlings of four species that were transplanted into five wetland monoculture types: invasive Lythrum salicaria; native L. alatum, Typha angustifolia, T. latifolia; unvegetated control. Invasive L. salicaria had the strongest suppressive effect on actual and per-individual bases, but not on a per-gram basis. Seedlings of T. latifolia were better able to grow in established vegetation than were those of L. salicaria and T. angustifolia. These results suggest that L. salicaria is not a good invader of established vegetation, but once established, it is fairly resistant to invasion. Thus, it is likely that disturbance of established vegetation facilitates invasion by L. salicaria, allowing it to compete with other species in even-aged stands where its high growth rate and consequent production of aboveground biomass confer a competitive advantage.", "keywords": ["0106 biological sciences", "Conservation of Natural Resources", "Seedlings", "Water Supply", "Population Dynamics", "Plant Development", "Biomass", "15. Life on land", "01 natural sciences", "Ecosystem", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1007/s00442-004-1494-6"}, {"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/s00442-004-1494-6", "name": "item", "description": "10.1007/s00442-004-1494-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-004-1494-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-03-01T00:00:00Z"}}, {"id": "10.1007/s00442-004-1540-4", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:21Z", "type": "Journal Article", "created": "2004-03-19", "title": "Feedback Interactions Between Needle Litter Decomposition And Rhizosphere Activity", "description": "The aim of our study was to identify interactions between the decomposition of aboveground litter and rhizosphere activity. The experimental approach combined the placement of labelled litter (delta13C=-37.9 per thousand ) with forest girdling in a 35-year-old Norway spruce stand, resulting in four different treatment combinations: GL (girdled, litter), GNL (girdled, no litter), NGL (not girdled, litter), and NGNL (not girdled, no litter). Monthly sampling of soil CO2 efflux and delta13C of soil respired CO2 between May and October 2002 allowed the partitioning of the flux into that derived from the labelled litter, and that derived from native soil organic matter and roots. The effect of forest girdling on soil CO2 efflux was detectable from June (girdling took place in April), and resulted in GNL fluxes to be about 50% of NGNL fluxes by late August. The presence of litter resulted in significantly increased fluxes for the first 2 months of the experiment, with significantly greater litter derived fluxes from non-girdled plots and a significant interaction between girdling and litter treatments over the same period. For NGL collars, the additional efflux was found to originate only in part from litter decomposition, but also from the decay of native soil organic matter. In GL collars, this priming effect was not significant, indicating an active role of the rhizosphere in soil priming. The results therefore indicate mutual positive feedbacks between litter decomposition and rhizosphere activity. Soil biological analysis (microbial and fungal biomass) of the organic layers indicated greatest activity below NGL collars, and we suppose that this increase indicates the mechanism of mutual positive feedback between rhizosphere activity and litter decomposition. However, elimination of fresh C input from both above- and belowground (GNL) also resulted in greater fungal abundance than for the NGNL treatment, indicating likely changes in fungal community structure (i.e. a shift from symbiotic to saprotrophic species abundance).", "keywords": ["570", "Soil ecology", "Microbial biomass", "Models", " Biological", "630", "Soil", "Biomass", "Picea", "Forest girdling; Microbial biomass; Soil CO; 2; efflux; Soil organic matter; Stable C isotopes;", "Ecosystem", "Soil Microbiology", "Soil CO2 efflux", "Feedback", " Physiological", "Soil organic matter", "Carbon Isotopes", "Fungi", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Microbial growth", "Stable C isotopes", "Plant Leaves", "13. Climate action", "Soils", "0401 agriculture", " forestry", " and fisheries", "Forest girdling", "Seasons"]}, "links": [{"href": "https://doi.org/10.1007/s00442-004-1540-4"}, {"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/s00442-004-1540-4", "name": "item", "description": "10.1007/s00442-004-1540-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-004-1540-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-05-01T00:00:00Z"}}, {"id": "10.1007/s00442-004-1687-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:21Z", "type": "Journal Article", "created": "2004-08-18", "title": "Nutrient Uptake As A Contributing Explanation For Deep Rooting In Arid And Semi-Arid Ecosystems", "description": "Explanations for the occurrence of deep-rooted plants in arid and semi-arid ecosystems have traditionally emphasized the uptake of relatively deep soil water. However, recent hydrologic data from arid systems show that soil water potentials at depth fluctuate little over long time periods, suggesting this water may be rarely utilized or replenished. In this study, we examine the distributions of root biomass, soil moisture and nutrient contents to 10-m depths at five semi-arid and arid sites across southwestern USA. We couple these depth distributions with strontium (Sr) isotope data that show deep (>1 m) nutrient uptake is prevalent at four of the five sites. At all of the sites, the highest abundance of one or more of the measured nutrients occurred deep within the soil profile, particularly for P, Ca2+ and Mg2+. Phosphate contents were greater at depth than in the top meter of soil at three of five sites. At Jornada, for example, the 2-3 m depth increment had twice the extractable P as the top meter of soil, despite the highest concentrations of P occurring at the surface. The prevalence of such deep resource pools, and our evidence for cation uptake from them, suggest nutrient uptake as a complementary explanation for the occurrence of deep-rooted plants in arid and semi-arid systems. We propose that hydraulic redistribution of shallow surface water to deep soil layers by roots may be the mechanism through which deep soil nutrients are mobilized and taken up by plants.", "keywords": ["2. Zero hunger", "0106 biological sciences", "Fresh Water", "Humidity", "Phosphorus", "04 agricultural and veterinary sciences", "15. Life on land", "Plant Roots", "01 natural sciences", "Soil", "Strontium Isotopes", "13. Climate action", "Southwestern United States", "0401 agriculture", " forestry", " and fisheries", "Calcium", "Magnesium", "Biomass", "Ecosystem", "Plant Physiological Phenomena"]}, "links": [{"href": "https://doi.org/10.1007/s00442-004-1687-z"}, {"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/s00442-004-1687-z", "name": "item", "description": "10.1007/s00442-004-1687-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-004-1687-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-08-19T00:00:00Z"}}, {"id": "10.1007/s00442-005-0012-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:21Z", "type": "Journal Article", "created": "2005-04-05", "title": "Inter-Annual Variability Of Ndvi In Response To Long-Term Warming And Fertilization In Wet Sedge And Tussock Tundra", "description": "This study explores the relationship between the normalized difference vegetation index (NDVI) and aboveground plant biomass for tussock tundra vegetation and compares it to a previously established NDVI-biomass relationship for wet sedge tundra vegetation. In addition, we explore inter-annual variation in NDVI in both these contrasting vegetation communities. All measurements were taken across long-term experimental treatments in wet sedge and tussock tundra communities at the Toolik Lake Long Term Ecological Research (LTER) site, in northern Alaska. Over 15 years (for wet sedge tundra) and 14 years (for tussock tundra), N and P were applied in factorial experiments (N, P and N+P), air temperature was increased using greenhouses with and without N+P fertilizer, and light intensity was reduced by 50% using shade cloth. during the peak growing seasons of 2001, 2002, and 2003, NDVI measurements were made in both the wet sedge and tussock tundra experimental treatment plots, creating a 3-year time series of inter-annual variation in NDVI. We found that: (1) across all tussock experimental tundra treatments, NDVI is correlated with aboveground plant biomass (r2 = 0.59); (2) NDVI-biomass relationships for tussock and wet sedge tundra communities are community specific, and; (3) NDVI values for tussock tundra communities are typically, but not always, greater than for wet sedge tundra communities across all experimental treatments. We suggest that differences between the response of wet sedge and tussock tundra communities in the same experimental treatments result from the contrasting degree of heterogeneity in species and functional types that characterize each of these Arctic tundra vegetation communities.", "keywords": ["0106 biological sciences", "Analysis of Variance", "Nitrogen", "Temperature", "Phosphorus", "04 agricultural and veterinary sciences", "Environment", "15. Life on land", "01 natural sciences", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Longitudinal Studies", "Alaska", "Ecosystem", "Plant Physiological Phenomena"]}, "links": [{"href": "https://doi.org/10.1007/s00442-005-0012-9"}, {"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/s00442-005-0012-9", "name": "item", "description": "10.1007/s00442-005-0012-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-005-0012-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-03-19T00:00:00Z"}}, {"id": "10.1007/s00442-005-0191-4", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-24T16:15:21Z", "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/s00442-006-0458-4", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:21Z", "type": "Journal Article", "created": "2006-05-30", "title": "Elevated [Co2] And Increased N Supply Reduce Leaf Disease And Related Photosynthetic Impacts On Solidago Rigida", "description": "To evaluate whether leaf spot disease and related effects on photosynthesis are influenced by increased nitrogen (N) input and elevated atmospheric CO(2) concentration ([CO(2)]), we examined disease incidence and photosynthetic rate of Solidago rigida grown in monoculture under ambient or elevated (560 micromol mol(-1)) [CO(2)] and ambient or elevated (+4 g N m(-2) year(-1)) N conditions in a field experiment in Minnesota, USA. Disease incidence was lower in plots with either elevated [CO(2)] or enriched N (-57 and -37%, respectively) than in plots with ambient conditions. Elevated [CO(2)] had no significant effect on total plant biomass, or on photosynthetic rate, but reduced tissue%N by 13%. In contrast, N fertilization increased both biomass and total plant N by 70%, and as a consequence tissue%N was unaffected and photosynthetic rate was lower on N fertilized plants than on unfertilized plants. Regardless of treatment, photosynthetic rate was reduced on leaves with disease symptoms. On average across all treatments, asymptomatic leaf tissue on diseased leaves had 53% lower photosynthetic rate than non-diseased leaves, indicating that the negative effect from the disease extended beyond the visual lesion area. Our results show that, in this instance, indirect effects from elevated [CO(2)], i.e., lower disease incidence, had a stronger effect on realized photosynthetic rate than the direct effect of higher [CO(2)].", "keywords": ["0301 basic medicine", "0303 health sciences", "03 medical and health sciences", "Ascomycota", "Nitrogen", "13. Climate action", "Biomass", "Carbon Dioxide", "Photosynthesis", "Plant Diseases", "Solidago"]}, "links": [{"href": "https://doi.org/10.1007/s00442-006-0458-4"}, {"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/s00442-006-0458-4", "name": "item", "description": "10.1007/s00442-006-0458-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-006-0458-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-05-31T00:00:00Z"}}, {"id": "10.1007/s00442-006-0515-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:21Z", "type": "Journal Article", "created": "2006-08-23", "title": "Aboveground Productivity And Root-Shoot Allocation Differ Between Native And Introduced Grass Species", "description": "Plant species in grasslands are often separated into groups (C(4) and C(3) grasses, and forbs) with presumed links to ecosystem functioning. Each of these in turn can be separated into native and introduced (i.e., exotic) species. Although numerous studies have compared plant traits between the traditional groups of grasses and forbs, fewer have compared native versus introduced species. Introduced grass species, which were often introduced to prevent erosion or to improve grazing opportunities, have become common or even dominant species in grasslands. By virtue of their abundances, introduced species may alter ecosystems if they differ from natives in growth and allocation patterns. Introduced grasses were probably selected nonrandomly from the source population for forage (aboveground) productivity. Based on this expectation, aboveground production is predicted to be greater and root mass fraction to be smaller in introduced than native species. We compared root and shoot distribution and tissue quality between introduced and native C(4) grass species in the Blackland Prairie region of Central Texas, USA, and then compared differences to the more well-studied divergence between C(4) grasses and forbs. Comparisons were made in experimental monocultures planted with equal-sized transplants on a common soil type and at the same density. Aboveground productivity and C:N ratios were higher, on average, in native grasses than in native forbs, as expected. Native and introduced grasses had comparable amounts of shallow root biomass and tissue C:N ratios. However, aboveground productivity and total N were lower and deep root biomass and root mass fraction were greater in native than introduced grasses. These differences in average biomass distribution and N could be important to ecosystems in cases where native and introduced grasses have been exchanged. Our results indicate that native-introduced status may be important when interpreting species effects on grassland processes like productivity and plant N accumulation.", "keywords": ["580", "0106 biological sciences", "2. Zero hunger", "570", "Invasive species", "Nitrogen", "Exotic species", "Root biomass", "04 agricultural and veterinary sciences", "15. Life on land", "Poaceae", "Texas", "Plant Roots", "01 natural sciences", "Carbon", "Introduced species", "Grasslands", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Agricultural Science", "Tallgrass prairie", "Ecosystem", "Plant Shoots"]}, "links": [{"href": "https://doi.org/10.1007/s00442-006-0515-z"}, {"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/s00442-006-0515-z", "name": "item", "description": "10.1007/s00442-006-0515-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-006-0515-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-08-23T00:00:00Z"}}, {"id": "10.1007/s004420050619", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:23Z", "type": "Journal Article", "created": "2002-08-25", "title": "Soil Carbon And Nitrogen In A Pine-Oak Sand Plain In Central Massachusetts: Role Of Vegetation And Land-Use History", "description": "Over the last 150 years much of the landscape of eastern North America has been transformed from predominantly agricultural lands to forest. Although cultivation strongly affects important ecosystem processes such as biomass accumulation, soil organic matter dynamics, and nitrogen cycling, recovery of these processes after abandonment is insufficiently understood. We examined soil carbon and nitrogen pools and nitrogen dynamics for 16 plots on a central Massachusetts sand plain, over 80% of which had been cultivated and subsequently abandoned at least 40 years ago. The two youngest old-field forests, located on sites abandoned 40-60 years prior to our sampling, had the lowest mineral soil carbon content (0-15\u2009cm), 31% less than the average of unplowed soils. Soil carbon concentration and loss-on-ignition were significantly higher in unplowed soils than in all plowed soils, but these differences were offset by the higher bulk density in formerly plowed soils, leading to no significant differences in C content between plowed and unplowed soil. Soil C:N ratios were lower in formerly plowed soils (26.2) than in unplowed soils (28.0). While soil N content was not affected by land-use history or vegetation type, net N mineralization showed much greater variation. In situ August net nitrogen mineralization varied nearly 40-fold between stand types: lowest in pitch pine and white pine stands (-0.13 and 0.10\u2009kg\u2009N\u2009ha-1\u200928\u2009day-1), intermediate in scrub oak stands (0.48\u2009kg\u2009N\u2009ha-1\u200928\u2009day-1) and highest in aspen and mixed oak stands (1.34-3.11\u2009kg\u2009N\u2009ha-1\u200928\u2009day-1). Mineralization was more strongly related to present vegetation than to land-use history or soil N content. Appreciable net nitrification was observed only in the most recently abandoned aspen plot (0.82\u2009kg\u2009N\u2009ha-1\u200928\u2009day-1), suggesting that recent disturbance and residual agricultural lime stimulated nitrification. Carbon:nitrogen ratios increased and pH declined with stand age. Higher bulk density, lower loss-on-ignition and C:N ratios, and slightly lower C concentrations in the surface mineral soil are the persistent legacies of agriculture on soil properties. Short-term agricultural use and the low initial C and N concentrations in these sandy soils appear to have resulted in less persistent impacts of agriculture on soil C and N content and N cycling.", "keywords": ["0106 biological sciences", "soil-properties", "Forests", "Environmental-Sciences)", "01 natural sciences", "nitrogen", "variation-", "Soil", "Quercus", "soil-nitrogen", "nitrogen-", "cultivation-", "cycling-", "soil-organic-matter", "vegetation-history", "sandy-soils", "soil-carbon", "2. Zero hunger", "7440-44-0: CARBON", "carbon-", "pines-", "Soil-studies", "land-use-history", "04 agricultural and veterinary sciences", "pine-oak-sand-plain", "Chemistry", "North-America", "Nearctic-region)", "Massachusetts", "agricultural-practice", "biomass-production", "trees-", "7727-37-9: Nitrogen", "nitrification-", "United-States", "forests-", "Agricultural ecosystems", "land-use", "Massachusetts- (USA-", "forest-lands", "Nutrient dynamics", "vegetation-type", "USA", "Vegetation", "mineralization-", "15. Life on land", "Pinus", "soil-types", "Terrestrial-Ecology (Ecology-", "0401 agriculture", " forestry", " and fisheries", "agricultural-land", "ecosystems-"], "contacts": [{"organization": "Campton, Jana E., Boone, Richard D., Motzkin, Glenn, Foster, David R.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s004420050619"}, {"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/s004420050619", "name": "item", "description": "10.1007/s004420050619", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s004420050619"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1998-10-01T00:00:00Z"}}, {"id": "10.1007/s00442-008-1106-y", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:21Z", "type": "Journal Article", "created": "2008-07-24", "title": "Earthworms, Collembola And Residue Management Change Wheat (Triticum Aestivum) And Herbivore Pest Performance (Aphidina : Rhophalosiphum Padi)", "description": "Management practices of arable systems determine the distribution of soil organic matter thereby changing decomposer animal activity and their impact on nutrient mineralization, plant growth and plant-herbivore interactions. Decomposer-mediated changes in plant growth and insect pest performance were investigated in wheat-aphid model systems in the greenhouse. Three types of litter distribution were established: litter patch at the soil surface (simulating mulching), litter patch deeper in soil (simulating ploughing) and litter homogeneously mixed into soil (simulating disk cultivation). The litter was labelled with (15)N to follow the mineralization and uptake of nutrients by the plants. Earthworms (Aporrectodea caliginosa) and Collembola (Protaphorura armata) were included as representatives of major functional groups of decomposers. Wheat (Triticum aestivum) was planted and aphids (Rhophalosiphum padi) were introduced to leaves as one of the most important pests. Earthworms, Collembola and litter distribution affected plant growth, N acquisition and aphid development in an interactive way. Earthworms and Collembola increased biomass of seeds, shoots and roots of wheat. Increased plant growth by earthworms and Collembola was mainly due to increased transfer of N from soil (rather than litter) into plants. Despite increasing plant growth, earthworms reduced aphid reproduction. Aphid reproduction was not correlated closely with plant N concentrations, but rather with the concentration of litter N in wheat. Unexpectedly, both Collembola and earthworms predominantly affected the mobilization of N from soil organic matter, and by altering the distribution of litter earthworms reduced infestation of crops by aphids via reducing plant capture of litter N, in particular if the litter was concentrated deeper in soil. The results suggest that management practices stimulating a continuous moderate increase in nutrient mobilization from soil organic matter rather than nutrient flushes from decomposing fresh organic matter result in maximum plant growth with minimum plant pest infestation.", "keywords": ["0106 biological sciences", "2. Zero hunger", "Nitrogen Isotopes", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Plant Leaves", "Soil", "Aphids", "Multivariate Analysis", "Animals", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Oligochaeta", "Arthropods", "Ecosystem", "Triticum"], "contacts": [{"organization": "Xin Ke, Stefan Scheu,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s00442-008-1106-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oecologia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00442-008-1106-y", "name": "item", "description": "10.1007/s00442-008-1106-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-008-1106-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-07-25T00:00:00Z"}}, {"id": "10.1007/s00442-009-1427-5", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-06-24T16:15:21Z", "type": "Journal Article", "created": "2009-08-22", "title": "Herbivore Impacts To The Moss Layer Determine Tundra Ecosystem Response To Grazing And Warming", "description": "Herbivory and climate are key environmental drivers, shaping ecosystems at high latitudes. Here, we focus on how these two drivers act in concert, influencing the high arctic tundra. We aim to investigate mechanisms through which herbivory by geese influences vegetation and soil processes in tundra ecosystems under ambient and warmed conditions. To achieve this, two grazing treatments, clipping plus faecal additions and moss removal, were implemented in conjunction with passive warming. Our key finding was that, in many cases, the tundra ecosystem response was determined by treatment impacts on the moss layer. Moss removal reduced the remaining moss layer depth by 30% and increased peak grass biomass by 27%. These impacts were probably due to observed higher soil temperatures and decomposition rates associated with moss removal. The positive impact of moss removal on grass biomass was even greater with warming, further supporting this conclusion. In contrast, moss removal reduced dwarf shrub biomass possibly resulting from increased exposure to desiccating winds. An intact moss layer buffered the soil to increased air temperature and as a result there was no response of vascular plant productivity to warming over the course of this study. In fact, moss removal impacts on soil temperature were nearly double those of warming, suggesting that the moss layer is a key component in controlling soil conditions. The moss layer also absorbed nutrients from faeces, promoting moss growth. We conclude that both herbivory and warming influence this high arctic ecosystem but that herbivory is the stronger driver of the two. Disturbance to the moss layer resulted in a shift towards a more grass-dominated system with less abundant mosses and shrubs, a trend that was further enhanced by warming. Thus herbivore impacts to the moss layer are key to understanding arctic ecosystem response to grazing and warming.", "keywords": ["0106 biological sciences", "Arctic Regions", "Bryophyta", "Feeding Behavior", "15. Life on land", "Cold Climate", "Poaceae", "Global Warming", "01 natural sciences", "Soil", "13. Climate action", "Geese", "Animals", "Biomass", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1007/s00442-009-1427-5"}, {"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/s00442-009-1427-5", "name": "item", "description": "10.1007/s00442-009-1427-5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-009-1427-5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-08-23T00:00:00Z"}}, {"id": "10.1007/s00442-009-1516-5", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:21Z", "type": "Journal Article", "created": "2009-12-04", "title": "Combined Effects Of Precipitation And Nitrogen Deposition On Native And Invasive Winter Annual Production In California Deserts", "description": "Primary production in deserts is limited by soil moisture and N availability, and thus is likely to be influenced by both anthropogenic N deposition and precipitation regimes altered as a consequence of climate change. Invasive annual grasses are particularly responsive to increases in N and water availabilities, which may result in competition with native forb communities. Additionally, conditions favoring increased invasive grass production in arid and semi-arid regions can increase fire risk, negatively impacting woody vegetation that is not adapted to fire. We conducted a seeded garden experiment and a 5-year field fertilization experiment to investigate how winter annual production is altered by increasing N supply under a range of water availabilities. The greatest production of invasive grasses and native forbs in the garden experiment occurred under the highest soil N (inorganic N after fertilization = 2.99 g m(-2)) and highest watering regime, indicating these species are limited by both water and N. A classification and regression tree (CART) analysis on the multi-year field fertilization study showed that winter annual biomass was primarily limited by November-December precipitation. Biomass exceeded the threshold capable of carrying fire when inorganic soil N availability was at least 3.2 g m(-2) in pi\u00f1on-juniper woodland. Due to water limitation in creosote bush scrub, biomass exceeded the fire threshold only under very wet conditions regardless of soil N status. The CART analyses also revealed that percent cover of invasive grasses and native forbs is primarily dependent on the timing and amount of precipitation and secondarily dependent on soil N and site-specific characteristics. In total, our results indicate that areas of high N deposition will be susceptible to grass invasion, particularly in wet years, potentially reducing native species cover and increasing the risk of fire.", "keywords": ["0106 biological sciences", "Time Factors", "Schismus", "Non-native", "Bromus", "Nitrogen", "Climate Change", "Rain", "Plant Development", "Poaceae", "01 natural sciences", "California", "Fires", "Soil", "Climate change", "Biomass", "Ecology", " Evolution", " Behavior and Systematics", "0105 earth and related environmental sciences", "2. Zero hunger", "Ecology", "Geography", "Ecosystem ecology - Original paper", "Plant Sciences", "Life Sciences", "Water", "Agriculture", "Plants", "15. Life on land", "Fuel load", "6. Clean water", "13. Climate action", "Fertilization", "Regression Analysis", "Seasons", "Desert Climate"], "contacts": [{"organization": "Rao, Leela E., Allen, Edith B.,", "roles": ["creator"]}]}, "links": [{"href": "https://escholarship.org/content/qt8qv4f2kn/qt8qv4f2kn.pdf"}, {"href": "https://doi.org/10.1007/s00442-009-1516-5"}, {"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/s00442-009-1516-5", "name": "item", "description": "10.1007/s00442-009-1516-5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-009-1516-5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-12-05T00:00:00Z"}}, {"id": "10.1007/s00442-012-2360-6", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:22Z", "type": "Journal Article", "created": "2012-05-21", "title": "Consequences Of Exclusion Of Precipitation On Microorganisms And Microbial Consumers In Montane Tropical Rainforests", "description": "The structure and functioning of decomposer systems heavily relies on soil moisture. However, this has been primarily studied in temperate ecosystems; little is known about how soil moisture affects the microfaunal food web in tropical regions. This lack of knowledge is surprising, since the microfaunal food web controls major ecosystem processes. To evaluate the role of precipitation in the structure of soil food web components (i.e., microorganisms and testate amoebae), we excluded water input by rain in montane rainforests at different altitudes in Ecuador. Rain exclusion strongly reduced microbial biomass and respiration by about 50\u00a0%, and fungal biomass by 23\u00a0%. In testate amoebae, rain exclusion decreased the density of live cells by 91\u00a0% and caused a shift in species composition at each of the altitudes studied, with ergosterol concentrations, microbial biomass, and water content explaining 25\u00a0% of the variation in species data. The results document that reduced precipitation negatively affects soil microorganisms, but that the response of testate amoebae markedly exceeds that of bacteria and fungi. This suggests that, in addition to food, low precipitation directly affects the community structure of testate amoebae, with the effect being more pronounced at lower altitudes. Overall, the results show that microorganisms and testate amoebae rapidly respond to a reduction in precipitation, with testate amoebae-representatives of higher trophic levels-being more sensitive. The results imply that precipitation and soil moisture in tropical rainforests are the main factors regulating decomposition and nutrient turnover.", "keywords": ["2. Zero hunger", "0106 biological sciences", "Tropical Climate", "Food Chain", "Rain", "Water", "15. Life on land", "01 natural sciences", "Trees", "Soil", "13. Climate action", "Community ecology - Original research", "Biomass", "Ecuador", "Amoeba", "Ecology", " Evolution", " Behavior and Systematics", "Soil Microbiology"]}, "links": [{"href": "https://doi.org/10.1007/s00442-012-2360-6"}, {"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/s00442-012-2360-6", "name": "item", "description": "10.1007/s00442-012-2360-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-012-2360-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-05-22T00:00:00Z"}}, {"id": "10.1007/s00442-012-2484-8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:22Z", "type": "Journal Article", "created": "2012-12-27", "title": "Herbivore Trampling As An Alternative Pathway For Explaining Differences In Nitrogen Mineralization In Moist Grasslands", "description": "Studies addressing the role of large herbivores on nitrogen cycling in grasslands have suggested that the direction of effects depends on soil fertility. Via selection for high quality plant species and input of dung and urine, large herbivores have been shown to speed up nitrogen cycling in fertile grassland soils while slowing down nitrogen cycling in unfertile soils. However, recent studies show that large herbivores can reduce nitrogen mineralization in some temperate fertile soils, but not in others. To explain this, we hypothesize that large herbivores can reduce nitrogen mineralization in loamy or clay soils through soil compaction, but not in sandy soils. Especially under wet conditions, strong compaction in clay soils can lead to periods of soil anoxia, which reduces decomposition of soil organic matter and, hence, N mineralization. In this study, we use a long-term (37-year) field experiment on a salt marsh to investigate the hypothesis that the effect of large herbivores on nitrogen mineralization depends on soil texture. Our results confirm that the presence of large herbivores decreased nitrogen mineralization rate in a clay soil, but not in a sandy soil. By comparing a hand-mown treatment with a herbivore-grazed treatment, we show that these differences can be attributed to herbivore-induced changes in soil physical properties rather than to above-ground biomass removal. On clay soil, we find that large herbivores increase the soil water-filled porosity, induce more negative soil redox potentials, reduce soil macrofauna abundance, and reduce decomposition activity. On sandy soil, we observe no changes in these variables in response to grazing. We conclude that effects of large herbivores on nitrogen mineralization cannot be understood without taking soil texture, soil moisture, and feedbacks through soil macrofauna into account.", "keywords": ["0106 biological sciences", "IMPACT", "Nitrogen", "01 natural sciences", "Soil fauna", "COMPACTION", "Soil", "SOIL PHYSICAL-PROPERTIES", "SALT-MARSH", "Large herbivores", "Soil texture", "Animals", "Biomass", "Herbivory", "Soil compaction", "Ecosystem", "2. Zero hunger", "UNGULATE", "national", "Water", "DENITRIFICATION", "Nitrogen Cycle", "15. Life on land", "N cycling", "YELLOWSTONE-NATIONAL-PARK", "PLANT-GROWTH", "13. Climate action", "ECOSYSTEM", "Clay", "Aluminum Silicates", "Soil moisture", "BAIT-LAMINA TEST"]}, "links": [{"href": "https://doi.org/10.1007/s00442-012-2484-8"}, {"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/s00442-012-2484-8", "name": "item", "description": "10.1007/s00442-012-2484-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-012-2484-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-12-28T00:00:00Z"}}, {"id": "10.1007/s00442-013-2733-5", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:22Z", "type": "Journal Article", "created": "2013-08-08", "title": "Nitrogen Dynamics In Arctic Tundra Soils Of Varying Age: Differential Responses To Fertilization And Warming", "description": "In the foothills of the Brooks Range, Alaska, different glaciation histories have created landscapes with varying soil age. Productivity of most of these landscapes is generally N limited, but varies widely, as do plant species composition and soil properties (e.g., pH). We hypothesized that the projected changes in productivity and vegetation composition under a warmer climate might be mediated through differential changes in N availability across soil age. We compared readily available [water-soluble NH4 (+), NO3 (-), and amino acids (AA)], moderately available (soluble proteins), hydrolyzable, and total N pools across three tussock-tundra landscapes with soil ages ranging from 11.5k to 300k years. The effects of fertilization and warming on these N pools were also compared for the two younger sites. Readily available N was highest at the oldest site, and AA accounted for 80-89 % of this N. At the youngest site, inorganic N constituted the majority (80-97 %) of total readily available N. This variation reflected the large differences in plant functional group composition and soil chemical properties. Long-term (8-16 years) fertilization increased the soluble inorganic N by 20- to 100-fold at the intermediate-age site, but only by twofold to threefold at the youngest site. Warming caused small and inconsistent changes in the soil C:N ratio and AA, but only in soils beneath Eriophorum vaginatum, the dominant tussock-forming sedge. These differential responses suggest that the ecological consequences of warmer climates on these tundra ecosystems are more complex than simply elevated N-mineralization rates, and that the responses of landscapes might be impacted by soil age, or time since deglaciation.", "keywords": ["0106 biological sciences", "Arctic Regions", "Nitrogen", "Climate Change", "Nitrogen Cycle", "15. Life on land", "01 natural sciences", "Soil", "13. Climate action", "Ice Cover", "Biomass", "Cyperaceae", "Fertilizers", "Alaska", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1007/s00442-013-2733-5"}, {"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/s00442-013-2733-5", "name": "item", "description": "10.1007/s00442-013-2733-5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-013-2733-5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-08-09T00:00:00Z"}}, {"id": "10.1007/s00442-013-2833-2", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-06-24T16:15:22Z", "type": "Journal Article", "created": "2013-11-19", "title": "Response Of Grassland Biomass Production To Simulated Climate Change And Clipping Along An Elevation Gradient", "description": "Changes in rainfall and temperature regimes are altering plant productivity in grasslands worldwide, and these climate change factors are likely to interact with grassland disturbances, particularly grazing. Understanding how plant production responds to both climate change and defoliation, and how this response varies among grassland types, is important for the long-term sustainability of grasslands. For 4 years, we manipulated temperature [ambient and increased using open-top chambers (OTC)], water (ambient, reduced using rainout shelters and increased using hand watering) and defoliation (clipped, and unclipped) in three grassland types along an elevation gradient. We monitored plant cover and biomass and found that OTC reduced biomass by 15%, but clipping and water treatments interacted with each other and their effects varied in different grassland types. For example, total biomass did not decline in the higher elevation grasslands due to clipping, and water addition mitigated the effects of clipping on subordinate grasses in the lower grasslands. The response of total biomass was driven by dominant plant species while subordinate grasses and forbs showed more variable responses. Overall, our results demonstrate that biomass in the highest elevation grassland was least effected by the treatments and the response of biomass tended to be dependent on interactions between climate change treatments and defoliation. Together, the results suggest that ecosystem function of these grasslands under altered climate patterns will be dependent on site-specific management.", "keywords": ["0106 biological sciences", "0301 basic medicine", "2. Zero hunger", "British Columbia", "Altitude", "Climate", "Climate Change", "Temperature", "Water", "15. Life on land", "Poaceae", "01 natural sciences", "03 medical and health sciences", "13. Climate action", "Biomass", "Herbivory", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1007/s00442-013-2833-2"}, {"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/s00442-013-2833-2", "name": "item", "description": "10.1007/s00442-013-2833-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-013-2833-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-11-19T00:00:00Z"}}, {"id": "10.1007/s00442-015-3290-x", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-06-24T16:15:22Z", "type": "Journal Article", "created": "2015-03-19", "title": "The Priming Effect Of Soluble Carbon Inputs In Organic And Mineral Soils From A Temperate Forest", "description": "The priming effect (PE) is one of the most important interactions between C input and output in soils. Here we aim to quantify patterns of PE in response to six addition rates of (13)C-labeled water-soluble C (WSC) and determine if these patterns are different between soil organic and mineral layers in a temperate forest. Isotope mass balance was used to distinguish WSC derived from SOC-derived CO2 respiration. The relative PE was 1.1-3.3 times stronger in the mineral layer than in the organic layer, indicating higher sensitivity of the mineral layer to WSC addition. However, the magnitude of cumulative PE was significantly higher in the organic layer than in the mineral layer due to higher SOC in the organic layer. With an increasing WSC addition rate, cumulative PE increased for both layers, but tended to level off when the addition rate was higher than 400 mg C kg(-1) soil. This saturation effect indicates that stimulation of soil C loss by exogenous substrate would not be as drastic as the increase of C input. In fact, we found that the mineral layer with an WSC addition rate of 160-800 mg C kg(-1) soil had net C storage although positive PE was observed. The addition of WSC basically caused net C loss in the organic layer due to the high magnitude of PE, pointing to the importance of the organic layer in C cycling of forest ecosystems. Our findings provide a fundamental understanding of PE on SOC mineralization of forest soils and warrant further in situ studies of PE in order to better understand C cycling under global climate change.", "keywords": ["Carbon Isotopes", "Minerals", "Climate", "Climate Change", "04 agricultural and veterinary sciences", "Carbon Dioxide", "Forests", "15. Life on land", "Carbon", "Carbon Cycle", "Trees", "Soil", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Betula", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1007/s00442-015-3290-x"}, {"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/s00442-015-3290-x", "name": "item", "description": "10.1007/s00442-015-3290-x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-015-3290-x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-03-20T00:00:00Z"}}, {"id": "10.1007/s004420050375", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:22Z", "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/s004420050581", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:23Z", "type": "Journal Article", "created": "2002-08-25", "title": "Responses Of Communities Of Tropical Tree Species To Elevated Co2 In A Forest Clearing", "description": "Communities of ten species of tropical forest tree seedlings from three successional classes were grown at ambient and elevated CO2 in large open-top chambers on the edge of a forest in Panam\u00e1. Communities grew from 20\u2009cm to approximately 2\u2009m in height in 6 months. No enhancements in plant biomass accumulation occurred under elevated CO2 either in the whole communities or in growth of individual species. Reductions in leaf area index under elevated CO2 were observed, as were decreases in leaf nitrogen concentrations and increases in the C:N ratio of leaf tissue. Species tended to respond individualistically to elevated CO2, but some generalizations of how successional groupings responded could be made. Early and mid-successional species generally showed greater responses to elevated CO2 than late-successional species, particularly with respect to increases in photosynthetic rates and leaf starch concentrations, and reductions in leaf area ratio. Late-successional species showed greater increases in C:N ratios in response to elevated CO2 than did other species. Our results indicate that there may not be an increase in the growth of regenerating tropical forest under elevated CO2, but that there could be changes in soil nutrient availability because of reductions in leaf tissue quality, particularly in late-successional species.", "keywords": ["Successional status", "0106 biological sciences", "Biomass allocation", "Leaf chemistry", "1060 Biologie", "Elevated CO2", "Tropical forest tree species", "1060 Biology", "15. Life on land", "2303 Ecology", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1007/s004420050581"}, {"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/s004420050581", "name": "item", "description": "10.1007/s004420050581", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s004420050581"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1998-08-10T00:00:00Z"}}, {"id": "10.1007/s004420100656", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:23Z", "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/s10021-008-9219-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:26Z", "type": "Journal Article", "created": "2008-12-16", "title": "Increased Litter Build Up And Soil Organic Matter Stabilization In A Poplar Plantation After 6 Years Of Atmospheric Co2 Enrichment (Face): Final Results Of Pop-Euroface Compared To Other Forest Face Experiments", "description": "Free air CO2 enrichment (FACE) experiments in aggrading temperate forests and plantations have been initiated to test whether temperate forest ecosystems act as sinks for anthropogenic emissions of CO2. These FACE experiments have demonstrated increases in net primary production and carbon (C) storage in forest vegetation due to increased atmospheric CO2 concentrations. However, the fate of this extra biomass in the forest floor or mineral soil is less clear. After 6\u00a0years of FACE treatment in a short-rotation poplar plantation, we observed an additional sink of 32\u00a0g C\u00a0m\u22122\u00a0y\u22121 in the forest floor. Mineral soil C content increased equally under ambient and increased CO2 treatment during the 6-year experiment. However, during the first half of the experiment the increase in soil C was suppressed under FACE due to a priming effect, that is, the additional labile C increased the mineralization of older SOM, whereas during the second half of the experiment the increase in soil C was larger under FACE. An additional sink of 54\u00a0g C\u00a0m\u22122\u00a0y\u22121 in the top 10\u00a0cm of the mineral soil was created under FACE during the second half of the experiment. Although, this FACE effect was not significant due to a combination of soil spatial variability and the low number of replicates that are inherent to the present generation of forest stand FACE experiments. Physical fractionation by wet sieving revealed an increase in the C and nitrogen (N) content of macro-aggregates due to FACE. Further fractionation by density showed that FACE increased C and N contents of the light iPOM and mineral associated intra-macro-aggregate fractions. Isolation of micro-aggregates from macro-aggregates and subsequent fractionation by density revealed that FACE increased C and N contents of the light iPOM, C content of the fine iPOM and C and N contents of the mineral associated intra-micro-aggregate fractions. From this we infer that the amount of stabilized C and N increased under FACE treatment. We compared our data with published results of other forest FACE experiments and infer that the type of vegetation and soil base saturation, as a proxy for bioturbation, are important factors related to the size of the additional C sinks of the forest floor\u2013soil system under FACE.", "keywords": ["tropospheric o-3", "elevated co2", "n-fertilization", "Ecology", "mineral soil", "terrestrial ecosystems", "deciduous forest", "04 agricultural and veterinary sciences", "carbon storage", "cultivated soils", "15. Life on land", "13. Climate action", "biomass production", "Environmental Chemistry", "0401 agriculture", " forestry", " and fisheries", "nitrogen-use efficiency", "Ecology", " Evolution", " Behavior and Systematics"]}, "links": [{"href": "https://doi.org/10.1007/s10021-008-9219-z"}, {"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/s10021-008-9219-z", "name": "item", "description": "10.1007/s10021-008-9219-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10021-008-9219-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-12-17T00:00:00Z"}}, {"id": "10.1007/s10021-004-0259-8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:25Z", "type": "Journal Article", "created": "2005-07-11", "title": "The Influence Of Nutrient Availability On Soil Organic Matter Turnover Estimated By Incubations And Radiocarbon Modeling", "description": "We investigated the decomposability of soil organic matter (SOM) along a chronosequence of rainforest sites in Hawaii that form a natural fertility gradient and at two long-term fertilization experiments. To estimate turnover times and pool sizes of organic matter, we used two independent methods: (1) long-term incubations and (2) a three-box soil model constrained by radiocarbon measurements. Turnover times of slow-pool SOM (the intermediate pool between active and passive pools) calculated from incubations ranged from 6 to 20 y in the O horizon and were roughly half as fast in the A horizon. The radiocarbon-based model yielded a similar pattern but slower turnover times. The calculation of the 14C turnover times is sensitive to the lag time between photosynthesis and incorporation of organic C into SOM in a given horizon. By either method, turnover times at the different sites varied two- or threefold in soils with the same climate and vegetation community. Turnover times were fastest at the sites of highest soil fertility and were correlated with litter decay rates and primary productivity. However, experimental fertilization at the two least-fertile sites had only a small and inconsistent effect on turnover, with N slowing turnover and P slightly speeding it at one site. These results support studies of litter decomposition in suggesting that while plant productivity can respond rapidly to nutrient additions, decomposition may respond much more slowly to added nutrients.", "keywords": ["tropical forest", "decomposition", "Ecology", "microbial biomass", "carbon", "C-14", "04 agricultural and veterinary sciences", "Biological Sciences", "15. Life on land", "nitrogen", "0401 agriculture", " forestry", " and fisheries", "phosphorus", "Zoology", "Environmental Sciences"]}, "links": [{"href": "https://escholarship.org/content/qt9186j2fw/qt9186j2fw.pdf"}, {"href": "https://doi.org/10.1007/s10021-004-0259-8"}, {"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/s10021-004-0259-8", "name": "item", "description": "10.1007/s10021-004-0259-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10021-004-0259-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-06-01T00:00:00Z"}}, {"id": "10.1007/s10021-010-9405-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:26Z", "type": "Journal Article", "created": "2010-12-16", "title": "Effects Of Climate Change Drivers On Nitrous Oxide Fluxes In An Upland Temperate Grassland", "description": "Despite increasing interest in the patterns of trace gas emissions in terrestrial ecosystems, little is known about the impacts of climate change on nitrous oxide (N2O) fluxes. The aim of this study was to determine the importance of the three main drivers of climate change (warming, summer drought, and elevated CO2 concentrations) on N2O fluxes from an extensively managed, upland grassland. Over a 2-year period, we monitored N2O fluxes in an in situ ecosystem manipulation experiment simulating the climate predicted for the study area in 2080 (3.5\u00b0C temperature increase, 20% reduction in summer rainfall and atmospheric CO2 levels of 600\u00a0ppm). N2O fluxes showed significant seasonal and interannual variation irrespective of climate treatment, and were higher in summer and autumn compared with winter and spring. Overall, N2O emissions showed a positive correlation with soil temperature and rainfall. Elevated temperature had a positive impact on mean annual N2O fluxes but effects were only significant in 2007. Contrary to expectations, neither combined summer drought and warming nor the simultaneous application of elevated atmospheric CO2 concentrations, summer drought and warming had any significant effect on annual N2O fluxes. However, the maximum N2O flux rates observed during the study occurred when elevated CO2 was combined with warming and drought, suggesting the potential for important, short-term N2O\u2013N losses in enriched CO2 environments. Taken together, our results suggest that the N2O responses of temperate, extensively managed grasslands to future climate change scenarios may be primarily driven by temperature effects.", "keywords": ["ELEVATED ATMOSPHERIC CO2", "550", "warming", "[SDV]Life Sciences [q-bio]", "N2O EMISSIONS", "drought", "01 natural sciences", "FERTILIZATION", "SOIL-MICROORGANISMS", "0105 earth and related environmental sciences", "WATER-CONTENT", "2. Zero hunger", "nitrous oxide emission", "elevated CO(2)", "LAND-USE", "interannual variation", "grasslands", "04 agricultural and veterinary sciences", "15. Life on land", "BIOMASS PRODUCTION", "FILLED PORE-SPACE", "DIFFERENTLY MANAGED GRASSLANDS", "6. Clean water", "[SDV] Life Sciences [q-bio]", "13. Climate action", "ECOSYSTEM", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1007/s10021-010-9405-7"}, {"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/s10021-010-9405-7", "name": "item", "description": "10.1007/s10021-010-9405-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10021-010-9405-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-12-17T00:00:00Z"}}, {"id": "10.1007/s10021-021-00648-2", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:27Z", "type": "Journal Article", "created": "2021-05-07", "title": "Temperature Increases Soil Respiration Across Ecosystem Types and Soil Development, But Soil Properties Determine the Magnitude of This Effect", "description": "AbstractSoil carbon losses to the atmosphere, via soil heterotrophic respiration, are expected to increase in response to global warming, resulting in a positive carbon-climate feedback. Despite the well-known suite of abiotic and biotic factors controlling soil respiration, much less is known about how the magnitude of soil respiration responses to temperature changes over soil development and across contrasting soil properties. Here, we investigated the role of soil development stage and soil properties in driving the responses of soil heterotrophic respiration to increasing temperatures. We incubated soils from eight chronosequences ranging in soil age from hundreds to million years, and encompassing a wide range of vegetation types, climatic conditions, and chronosequences origins, at three assay temperatures (5, 15 and 25\uffc2\uffb0C). We found a consistent positive effect of assay temperature on soil respiration rates across the eight chronosequences evaluated. However, soil properties such as organic carbon concentration, texture, pH, phosphorus content, and microbial biomass determined the magnitude of temperature effects on soil respiration. Finally, we observed a positive effect of soil development stage on soil respiration that did not alter the magnitude of assay temperature effects. Our work reveals that key soil properties alter the magnitude of the positive effect of temperature on soil respiration found across ecosystem types and soil development stages. This information is essential to better understand the magnitude of the carbon-climate feedback, and thus to establish accurate greenhouse gas emission targets.\u00a0SX67\u00a0>\u00a09882-41. Leaf input was higher in the intercropping system (1,961\u00a0kg\u00a0ha\u22121) than in the conventional system (1,673\u00a0kg\u00a0ha\u22121). Clonal differences in leaf inputs followed the same trends as those for root biomass and yield: SV1\u00a0>\u00a0SX67\u00a0>\u00a09882-41. Soil organic carbon was significantly higher in the agroforestry field (1.94\u00a0%) than in the conventional field (1.82\u00a0%). A significant difference in soil organic carbon was found between the three clones: soils under clone 9882-41 had the lowest soil organic carbon at 1.80\u00a0%.", "keywords": ["F08 - Syst\u00e8mes et modes de culture", "culture associ\u00e9e", "http://aims.fao.org/aos/agrovoc/c_28066", "production foresti\u00e8re", "Juglans nigra", "http://aims.fao.org/aos/agrovoc/c_24367", "rotation de coupe", "http://aims.fao.org/aos/agrovoc/c_6754", "http://aims.fao.org/aos/agrovoc/c_3086", "http://aims.fao.org/aos/agrovoc/c_33452", "http://aims.fao.org/aos/agrovoc/c_3061", "m\u00e9thode statistique", "biomasse", "http://aims.fao.org/aos/agrovoc/c_3048", "http://aims.fao.org/aos/agrovoc/c_4059", "agroforesterie", "clone", "2. Zero hunger", "http://aims.fao.org/aos/agrovoc/c_35927", "http://aims.fao.org/aos/agrovoc/c_24696", "http://aims.fao.org/aos/agrovoc/c_1678", "Salix", "04 agricultural and veterinary sciences", "15. Life on land", "plantation foresti\u00e8re", "Quercus rubra", "croissance", "http://aims.fao.org/aos/agrovoc/c_331583", "http://aims.fao.org/aos/agrovoc/c_207", "K10 - Production foresti\u00e8re", "s\u00e9questration du carbone", "http://aims.fao.org/aos/agrovoc/c_926", "http://aims.fao.org/aos/agrovoc/c_3394", "Fraxinus", "Robinia pseudoacacia", "culture en couloirs", "http://aims.fao.org/aos/agrovoc/c_6625", "http://aims.fao.org/aos/agrovoc/c_1236", "0401 agriculture", " forestry", " and fisheries", "Salix dasyclados", "http://aims.fao.org/aos/agrovoc/c_7377"]}, "links": [{"href": "https://doi.org/10.1007/s10457-012-9572-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agroforestry%20Systems", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10457-012-9572-y", "name": "item", "description": "10.1007/s10457-012-9572-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10457-012-9572-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-09-27T00:00:00Z"}}, {"id": "10.1007/s10533-010-9496-4", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:34Z", "type": "Journal Article", "created": "2010-07-11", "title": "Effects Of Nitrogen Additions On Above- And Belowground Carbon Dynamics In Two Tropical Forests", "description": "Anthropogenic nitrogen (N) deposition is increasing rapidly in tropical regions, adding N to ecosystems that often have high background N availability. Tropical forests play an important role in the global carbon (C) cycle, yet the effects of N deposition on C cycling in these ecosystems are poorly understood. We used a field N-fertilization experiment in lower and upper elevation tropical rain forests in Puerto Rico to explore the responses of above- and belowground C pools to N addition. As expected, tree stem growth and litterfall productivity did not respond to N fertilization in either of these N-rich forests, indicating a lack of N limitation to net primary productivity (NPP). In contrast, soil C concentrations increased significantly with N fertilization in both forests, leading to larger C stocks in fertilized plots. However, different soil C pools responded to N fertilization differently. Labile (low density) soil C fractions and live fine roots declined with fertilization, while mineral-associated soil C increased in both forests. Decreased soil CO2 fluxes in fertilized plots were correlated with smaller labile soil C pools in the lower elevation forest (R2\u00a0=\u00a00.65, p\u00a0<\u00a00.05), and with lower live fine root biomass in the upper elevation forest (R2\u00a0=\u00a00.90, p\u00a0<\u00a00.05). Our results indicate that soil C storage is sensitive to N deposition in tropical forests, even where plant productivity is not N-limited. The mineral-associated soil C pool has the potential to respond relatively quickly to N additions, and can drive increases in bulk soil C stocks in tropical forests.", "keywords": ["58 Geosciences Aboveground Biomass", "15. Life on land", "Roots", "Aboveground Biomass", "Environmental sciences", "Soil Respiration", "Dissolved Organic Carbon", "Soil Density Fractions", "Environmental Chemistry", "Nutrient Limitation", "54 Environmental Sciences", "Geosciences", "Earth-Surface Processes", "Water Science and Technology"]}, "links": [{"href": "https://escholarship.org/content/qt7ww245cp/qt7ww245cp.pdf"}, {"href": "https://doi.org/10.1007/s10533-010-9496-4"}, {"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/s10533-010-9496-4", "name": "item", "description": "10.1007/s10533-010-9496-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10533-010-9496-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-07-11T00:00:00Z"}}, {"id": "10.1007/s10533-012-9808-y", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:35Z", "type": "Journal Article", "created": "2012-10-31", "title": "Earthworms, Litter And Soil Carbon In A Northern Hardwood Forest", "description": "The important role of soil carbon (C) in the global C cycle has stimulated interest in better understanding the mechanisms regulating soil C storage and its stabilization. Exotic earthworm invasion of northern forest soils in North America can affect soil C pools, and we examined their effects on these mechanisms by adding 13C labeled leaf litter to adjacent northern hardwood forests with and without earthworms. Two types of labeled litter were produced, one with the 13C more concentrated in structural (S) components and the other in non-structural (NS) components, to evaluate the role of biochemical differences in soil C stabilization. Earthworm invasions have reduced soil C storage in the upper 20\u00a0cm of the soil profile by 37\u00a0%, mostly by eliminating surface organic horizons. Despite rapid mixing of litter into mineral soil and its incorporation into aggregates, mineral soil C has not increased in the presence of earthworms. Incorporation of litter C into soil and microbial biomass was not affected by biochemical differences between S versus NS labeled litter although NS litter C was assimilated more readily into earthworm biomass and S litter C into fungal hyphae. Apparently, the net effect of earthworm mixing of litter and forest floor C into mineral soil, plus stabilization of that C in aggregates, is counterbalanced by earthworm bioturbation and possible priming effects. Our results support recent arguments that biochemical recalcitrance is not a major contributor to the stabilization of soil C.", "keywords": ["IMPACTS", "Decomposition", "STABILIZATION", "Multidisciplinary", "biomass", "MICROBIAL BIOMASS", "INVASION", "Microbial biomass", "TEMPERATE", "04 agricultural and veterinary sciences", "SEQUESTRATION", "15. Life on land", "Fungal hyphae", "Aggregation", "Microbial", "Sugar maple", "FORESTS", "DISSOLVED ORGANIC-MATTER", "PATTERNS", "0401 agriculture", " forestry", " and fisheries", "USA", "Environmental Sciences", "Geosciences", "Isotope labeling", "CENTRAL NEW-YORK"]}, "links": [{"href": "https://doi.org/10.1007/s10533-012-9808-y"}, {"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/s10533-012-9808-y", "name": "item", "description": "10.1007/s10533-012-9808-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10533-012-9808-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-11-01T00:00:00Z"}}, {"id": "10.1007/s10646-013-1139-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:36Z", "type": "Journal Article", "created": "2013-10-11", "title": "Soil Biological Attributes In Arsenic-Contaminated Gold Mining Sites After Revegetation", "description": "Recovery of arsenic contaminated areas is a challenge society faces throughout the world. Revegetation associated with microbial activity can play an essential role in this process. This work investigated biological attributes in a gold mining area with different arsenic contents at different sites under two types of extant revegetation associated with cover layers of the soil: BS, Brachiaria sp. and Stizolobium sp., and LEGS, Acacia crassicarpa, A. holosericea, A. mangium, Sesbania virgata, Albizia lebbeck and Pseudosamanea guachapele. References were also evaluated, comprising the following three sites: B1, weathered sulfide substrate without revegetation; BM, barren material after gold extraction and PRNH (private reserve of natural heritage), an uncontaminated forest site near the mining area. The organic and microbial biomass carbon contents and substrate-induced respiration rates for these sites from highest to lowest were: PRNH > LEGS > BS > B1 and BM. These attributes were negatively correlated with soluble and total arsenic concentration in the soil. The sites that have undergone revegetation (LEGS and BS) had higher densities of bacteria, fungi, phosphate solubilizers and ammonium oxidizers than the sites without vegetation. Principal component analysis showed that the LEGS site grouped with PRNH, indicating that the use of leguminous species associated with an uncontaminated soil cover layer contributed to the improvement of the biological attributes. With the exception of acid phosphatase, all the biological attributes were indicators of soil recovery, particularly the following: microbial carbon, substrate-induced respiration, density of culturable bacteria, fungi and actinobacteria, phosphate solubilizers and metabolic quotient.", "keywords": ["Arsenic - Contamination", "Microbial biomass", "Quociente microbial", "01 natural sciences", "Mining", "Arsenic", "Photometry", "Respira\u00e7\u00e3o induzida por substrato", "Soil", "Substrate-induced respiration", "Soil Pollutants", "Biomass", "Microbial quotient", "Soil Microbiology", "0105 earth and related environmental sciences", "Ars\u00eanico - Contamina\u00e7\u00e3o", "Spectrophotometry", " Atomic", "Biomassa microbiana", "Phosphate solubilizers", "Solubilizantes de fosfato", "04 agricultural and veterinary sciences", "15. Life on land", "Biodegradation", " Environmental", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Brazil", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1007/s10646-013-1139-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecotoxicology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10646-013-1139-9", "name": "item", "description": "10.1007/s10646-013-1139-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10646-013-1139-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-10-11T00:00:00Z"}}, {"id": "10.1007/s10661-005-9021-8", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-06-24T16:15:36Z", "type": "Journal Article", "created": "2006-06-01", "title": "Dynamics Of Organic Carbon And Microbial Biomass In Alluvial Soil With Tillage And Amendments In Rice-Wheat Systems", "description": "Rice-wheat cropping systems of the Indo-Gangetic plains (IGP) occupying 12 million ha of productive land are important for the food security of South Asia. There are, however, concerns that yield and factor productivity trends in these systems are declining/stagnating in recent years. Decrease in soil organic carbon is often suggested as a reason for such trends. A field experiment was conducted to study the soil organic carbon (SOC) and soil microbial biomass carbon (MBC) dynamics in the rice-wheat systems. Use of organic amendments and puddling of soil before rice transplanting increased SOC and MBC contents. Microbial biomass carbon showed a seasonal pattern. It was low initially, reached its peak during the flowering stages in both rice and wheat and declined thereafter. Microbial biomass carbon was linearly related to SOC in both rice and wheat indicating that SOC could be used as a proxy for MBC.", "keywords": ["2. Zero hunger", "info:eu-repo/classification/ddc/550", "550", "ddc:550", "Oryza", "04 agricultural and veterinary sciences", "15. Life on land", "630", "Carbon", "Earth sciences", "Soil", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Ecosystem", "Soil Microbiology", "Triticum"], "contacts": [{"organization": "Banerjee, B., Aggarwal, P. K., Pathak, H., Singh, A. K., Chaudhary, A.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s10661-005-9021-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Monitoring%20and%20Assessment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10661-005-9021-8", "name": "item", "description": "10.1007/s10661-005-9021-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10661-005-9021-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-06-02T00:00:00Z"}}, {"id": "10.1007/s10661-006-9410-7", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-24T16:15:36Z", "type": "Journal Article", "created": "2006-12-15", "title": "Are Nitrogen-Fertilized Forest Soils Sinks Or Sources Of Carbon?", "description": "We developed a simple conceptual model that tracks nitrogen and carbon jointly through an N fertilized forest ecosystem. The stimulation of growth increases the litterfall and imports substrate for soil microorganisms. Microbial biomass forms according to the supply of C and N. The formation of microbial biomass is accompanied by respiratory C losses. The quantity of CO2 efflux depends on the C use efficiency of microbes. When excess N is available, the microbial activity is accelerated and the demand for substrate is high. Litterfall supplies an insufficient amount of C to the soil. In such a case, labile soil C is mineralized and the net effect of N fertilization is a loss of soil C. A strong N fertilization effect on the aboveground biomass can offset the soil C loss. In the case of a low N dosage or high N losses due to leaching or emission of nitrogen oxides, the soil C loss is small. The conceptual model was applied to a case study. The field data, collected over a time span of several decades, could not support sound conclusions on the temporal trend of soil C because the spatial and temporal variability of the chemical data was high. The conceptual model allowed to give an evaluation of the fertilization effect on soil C based on reproducible principles.", "keywords": ["nitrogen-fertilized", "sinks", "550", "Nitrogen", "carbon", "souces", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Carbon", "6. Clean water", "forest soils", "Soil", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Fertilizers", "Forest Sciences", "Environmental Sciences", "Soil Microbiology", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Van Miegroet, H., Jandl, R.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s10661-006-9410-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Monitoring%20and%20Assessment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10661-006-9410-7", "name": "item", "description": "10.1007/s10661-006-9410-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10661-006-9410-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-12-16T00:00:00Z"}}, {"id": "10.1007/s10661-007-9685-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:36Z", "type": "Journal Article", "created": "2007-03-16", "title": "Effect Of Heavy Metals On Microbial Biomass And Activities In Century Old Landfill Soil", "description": "A study was conducted to determine the effect of metals on soil microbial biomass and activities in landfill soils as well as normal background soil. The microbial biomass and activities were consistently higher in the landfill soils than in the background soil. Significant positive correlations existed between the microbial parameters and soil organic carbon. The landfill soils contained higher concentrations of metals (iron, manganese, copper, cadmium, lead and zinc) than did the background soil. Microbial parameters were negatively correlated with the metals, with inhibition increasing with the bioavailability of the metals. It is suggested that the metals affected microbial biomass and activities by behaving synergistically or additively with each other. Although the landfill soils had higher microbial biomass and activities than the background soil, due to higher organic matter content, the ratios of microbial parameters/organic carbon indicated that inhibition of microbial growth and activities had occurred due to metal stress.", "keywords": ["Time Factors", "India", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Carbon", "6. Clean water", "Refuse Disposal", "Soil", "Biodegradation", " Environmental", "13. Climate action", "Metals", " Heavy", "Humans", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Soil Microbiology", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s10661-007-9685-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Monitoring%20and%20Assessment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10661-007-9685-3", "name": "item", "description": "10.1007/s10661-007-9685-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10661-007-9685-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-03-17T00:00:00Z"}}, {"id": "10.1007/s10661-015-5031-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-24T16:15:37Z", "type": "Journal Article", "created": "2015-12-11", "description": "Sandy grassland restoration is a vital process including re-structure of soils, restoration of vegetation, and soil functioning in arid and semi-arid regions. Soil fungal community is a complex and critical component of soil functioning and ecological balance due to its roles in organic matter decomposition and nutrient cycling following sandy grassland restoration. In this study, soil fungal community and its relationship with environmental factors were examined along a habitat gradient of sandy grassland restoration: mobile dunes (MD), semi-fixed dunes (SFD), fixed dunes (FD), and grassland (G). It was found that species abundance, richness, and diversity of fungal community increased along with the sandy grassland restoration. The sequences analysis suggested that most of the fungal species (68.4 %) belonged to the phylum of Ascomycota. The three predominant fungal species were Pleospora herbarum, Wickerhamomyces anomalus, and Deconica Montana, accounting for more than one fourth of all the 38 species. Geranomyces variabilis was the subdominant species in MD, Pseudogymnoascus destructans and Mortierella alpine were the subdominant species in SFD, and P. destructans and Fungi incertae sedis were the dominant species in FD and G. The result from redundancy analysis (RDA) and stepwise regression analysis indicated that the vegetation characteristics and soil properties explain a significant proportion of the variation in the fungal community, and aboveground biomass and C:N ratio are the key factors to determine soil fungal community composition during sandy grassland restoration. It was suggested that the restoration of sandy grassland combined with vegetation and soil properties improved the soil fungal diversity. Also, the dominant species was found to be alternative following the restoration of sandy grassland ecosystems.", "keywords": ["2. Zero hunger", "China", "Soil", "Ecology", "0401 agriculture", " forestry", " and fisheries", "Biomass", "04 agricultural and veterinary sciences", "Desert Climate", "15. Life on land", "Poaceae", "Grassland", "Ecosystem", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1007/s10661-015-5031-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Monitoring%20and%20Assessment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10661-015-5031-3", "name": "item", "description": "10.1007/s10661-015-5031-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10661-015-5031-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-12-11T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Biomass&offset=50&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Biomass&offset=50&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "prev", "title": "items (prev)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Biomass&offset=0", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Biomass&offset=100", "hreflang": "en-US"}], "numberMatched": 861, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-06-24T23:15:38.562938Z"}