BACKGROUND: In spite of increasing knowledge of allelopathic rice as an efficient component involved in paddy weed management, relatively little is known about its reproduction in response to competing weeds. Reproduction allocation of individual allelopathic rice plants in relation to monoculture and mixed culture with competing barnyardgrass in a paddy field was studied, along with analyses of soil nutrients and microbial communities to understand the potential mechanism.
RESULTS: At a 1:1 barnyardgrass and rice mixture proportion identified from a replacement series study, biomass, grain yield and major parameters of individual allelopathic rice plants at the mature stage were increased by competing barnyardgrass. There was no difference in allelopathic rice root\uffe2\uff80\uff90zone soil ammonium N and Olsen P between monoculture and mixed culture. However, mixed culture altered soil microbial biomass C and communities. When mixed with barnyardgrass, allelopathic rice root zone had an 87% increase in soil microbial biomass C. Phospholipid fatty acid (PLFA) profiling indicated that the signature lipid biomarkers of bacteria, actinobacteria and fungi were affected by mixed culture. Principal component analysis clearly identified differences in the composition of PLFA in different soil samples.
CONCLUSION: Allelopathic rice specific changes in soil microbial communities may generate a positive feedback on its own growth and reproduction in the presence of competing barnyardgrass in a given paddy system. Copyright \uffc2\uffa9 2012 Society of Chemical Industry
", "keywords": ["2. Zero hunger", "0106 biological sciences", "China", "Reproduction", "Population Dynamics", "Oryza", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Pheromones", "Soil", "Echinochloa", "Rhizosphere", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Soil Microbiology"], "contacts": [{"organization": "Chui-Hua Kong, Peng Wang, Xiang-Rui Meng, Hanwen Ni, Ming-Li Wang,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1002/ps.3380"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Pest%20Management%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/ps.3380", "name": "item", "description": "10.1002/ps.3380", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/ps.3380"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-08-07T00:00:00Z"}}, {"id": "10.1007/s00442-003-1391-4", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:55:30Z", "type": "Journal Article", "created": "2003-12-10", "title": "Carbon Availability Controls The Growth Of Detritivores (Lumbricidae) And Their Effect On Nitrogen Mineralization", "description": "Activity of soil decomposer microorganisms is generally limited by carbon availability, but factors controlling saprophagous soil animals remain largely unknown. In contrast to microorganisms, animals are unable to exploit mineral nutrient pools. Therefore, it has been suggested that soil animals, and earthworms in particular, are limited by the availability of nitrogen. In contrast to this view, a strong increase in density and biomass of endogeic earthworms in response to labile organic carbon addition has been documented in field experiments. The hypothesis that the growth of endogeic earthworms is primarily limited by carbon availability was tested in a laboratory experiment lasting for 10 weeks. In addition, it was investigated whether the effects of earthworms on microbial activity and nutrient mineralization depend on the availability of carbon resources. We manipulated food availability to the endogeic earthworm species Octolasion tyrtaeum by using two soils with different organic matter content, providing access to different amounts of soil, and adding labile organic carbon (glucose) enriched in (13)C. Glucose addition strongly increased the growth of O. tyrtaeum. From 8 to 17% of the total C in earthworm tissue was assimilated from the glucose added. Soil microbial biomass was not strongly affected by the addition of glucose, though basal respiration was significantly increased and up to 50% of the carbon added as glucose was incorporated into soil organic matter. The impact of earthworms on the mineralization and leaching of nitrogen depended on C availability. As expected, in C-limited soil, the presence of earthworms strongly increased nitrogen leaching. However, when C availability was increased by the addition of glucose, this pattern was reversed, i.e. the presence of O. tyrtaeum decreased nitrogen leaching and its availability to soil microflora. We conclude that irrespective of the total carbon content of soils, O. tyrtaeum was primarily limited by carbon, and that increased carbon availability allowed earthworms to be more effective in mobilizing N. The presence of earthworms increases C limitation of soil microorganisms, due to increased availability of N and P in earthworm casts or a direct depletion of easily available carbon resources by earthworms.", "keywords": ["0106 biological sciences", "2. Zero hunger", "Carbon Isotopes", "Nitrogen", "Population Dynamics", "Biological Availability", "Phosphorus", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Carbon", "Soil", "Animals", "0401 agriculture", " forestry", " and fisheries", "Oligochaeta", "Soil Microbiology"]}, "links": [{"href": "https://doi.org/10.1007/s00442-003-1391-4"}, {"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/s00442-003-1391-4", "name": "item", "description": "10.1007/s00442-003-1391-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-003-1391-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-01-01T00:00:00Z"}}, {"id": "10.1007/s00442-004-1494-6", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-05-31T06:55:30Z", "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/s00442-011-2133-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:55:31Z", "type": "Journal Article", "created": "2011-10-04", "title": "Soil Warming Alters Nitrogen Cycling In A New England Forest: Implications For Ecosystem Function And Structure", "description": "Global climate change is expected to affect terrestrial ecosystems in a variety of ways. Some of the more well-studied effects include the biogeochemical feedbacks to the climate system that can either increase or decrease the atmospheric load of greenhouse gases such as carbon dioxide and nitrous oxide. Less well-studied are the effects of climate change on the linkages between soil and plant processes. Here, we report the effects of soil warming on these linkages observed in a large field manipulation of a deciduous forest in southern New England, USA, where soil was continuously warmed 5\u00b0C above ambient for 7 years. Over this period, we have observed significant changes to the nitrogen cycle that have the potential to affect tree species composition in the long term. Since the start of the experiment, we have documented a 45% average annual increase in net nitrogen mineralization and a three-fold increase in nitrification such that in years 5 through 7, 25% of the nitrogen mineralized is then nitrified. The warming-induced increase of available nitrogen resulted in increases in the foliar nitrogen content and the relative growth rate of trees in the warmed area. Acer rubrum (red maple) trees have responded the most after 7 years of warming, with the greatest increases in both foliar nitrogen content and relative growth rates. Our study suggests that considering species-specific responses to increases in nitrogen availability and changes in nitrogen form is important in predicting future forest composition and feedbacks to the climate system.", "keywords": ["Ecosystem ecology - Original Paper", "0106 biological sciences", "550", "Nitrogen", "Climate Change", "Population Dynamics", "Acer", "04 agricultural and veterinary sciences", "Nitrogen Cycle", "15. Life on land", "Nitrate Reductase", "01 natural sciences", "Trees", "Soil", "Species Specificity", "New England", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Ecology", " Evolution", " Behavior and Systematics", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1007/s00442-011-2133-7"}, {"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/s00442-011-2133-7", "name": "item", "description": "10.1007/s00442-011-2133-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-011-2133-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-10-05T00:00:00Z"}}, {"id": "10.1007/s00442-012-2471-0", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-05-31T06:55:31Z", "type": "Journal Article", "created": "2012-10-03", "title": "Ectomycorrhizal Fungal Succession Coincides With Shifts In Organic Nitrogen Availability And Canopy Closure In Post-Wildfire Jack Pine Forests", "description": "Successional changes in belowground ectomycorrhizal fungal (EMF) communities have been observed with increasing forest stand age; however, mechanisms behind this change remain unclear. It has been hypothesized that declines of inorganic nitrogen (N) and increases of organic N influence changes in EMF taxa over forest development. In a post-wildfire chronosequence of six jack pine (Pinus banksiana) stands ranging in age from 5 to 56 years, we investigated EMF community composition and compared shifts in taxa with detailed soluble inorganic and organic N data. Taxa were identified by internal transcribed spacer rDNA sequencing, and changes in community composition evaluated with non-metric multi-dimensional scaling (NMDS). Dissimilarities in the community data were tested for correlations with N variables. We observed a successional shift along NMDS axis 1 from such taxa as Suillus brevipes and Thelephora terrestris in sites age 5 and 11 to species of Cortinarius and Russula, among others, in the four older sites. This change was positively correlated with soluble organic N (SON) (r(2) = 0.902, P = 0.033) and free amino-acid N (r(2) = 0.945, P = 0.021), but not inorganic N. Overall, our results show a successional shift of EMF communities occurring between stand initiation and canopy closure without a change in species of the dominant plant-host, and associated with SON and free amino-acid N in soil. It is uncertain whether EMF taxa are responding to these organic N forms directly, affecting their availability, or are ultimately responding to changes in other site variables, such as belowground productivity.", "keywords": ["0106 biological sciences", "Mycorrhizae", "DNA", " Ribosomal Spacer", "Population Dynamics", "0401 agriculture", " forestry", " and fisheries", "Biodiversity", "04 agricultural and veterinary sciences", "Nitrogen Cycle", "15. Life on land", "Pinus", "01 natural sciences", "Fires"]}, "links": [{"href": "https://doi.org/10.1007/s00442-012-2471-0"}, {"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/s00442-012-2471-0", "name": "item", "description": "10.1007/s00442-012-2471-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-012-2471-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-10-04T00:00:00Z"}}, {"id": "10.1890/05-0836", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:00:43Z", "type": "Journal Article", "created": "2007-06-04", "title": "Bromus Tectorum Invasion Alters Nitrogen Dynamics In An Undisturbed Arid Grassland Ecosystem", "description": "The nonnative annual grass Bromus tectorum has successfully replaced native vegetation in many arid and semiarid ecosystems. Initial introductions accompanied grazing and agriculture, making it difficult to separate the effects of invasion from physical disturbance. This study examined N dynamics in two recently invaded, undisturbed vegetation associations (C3 and C4). The response of these communities was compared to an invaded/ disturbed grassland. The invaded/disturbed communities had higher surface NH4+ input in spring, whereas there were no differences for surface input of NO3-. Soil inorganic N was dominated by NH4+, but invaded sites had greater subsurface soil NO3-. Invaded sites had greater total soil N at the surface four years post-invasion in undisturbed communities, but total N was lower in the invaded/disturbed communities. Soil delta15N increased with depth in the noninvaded and recently invaded communities, whereas the invaded/disturbed communities exhibited the opposite pattern. Enriched foliar delta15N values suggest that Bromus assimilated subsurface NO3-, whereas the native grasses were restricted to surface N. A Rayleigh distillation model accurately described decomposition patterns in the noninvaded communities where soil N loss is accompanied by increasing soil delta15N; however, the invaded/ disturbed communities exhibited the opposite pattern, suggesting redistribution of N within the soil profile. This study suggests that invasion has altered the mechanisms driving nitrogen dynamics. Bromus litter decomposition and soil NO3- concentrations were greater in the invaded communities during periods of ample precipitation, and NO3- leached from the surface litter, where it was assimilated by Bromus. The primary source of N input in these communities is a biological soil crust that is removed with disturbance, and the lack of N input by the biological soil crust did not balance N loss, resulting in reduced total N in the invaded/disturbed communities. Bromus produced a positive feedback loop by leaching NO3- from decomposing Bromus litter to subsurface soil layers, accessing that deepsoil N pool with deep roots and returning that N to the surface as biomass and subsequent litter. Lack of new inputs combined with continued loss will result in lower total soil N, evidenced by the lower total soil N in the invaded/disturbed communities.", "keywords": ["ecosystem", "0106 biological sciences", "Nitrates", "550", "Nitrogen Isotopes", "Bromus", "Nitrogen", "Rain", "Population Dynamics", "arid", "Biodiversity", "04 agricultural and veterinary sciences", "15. Life on land", "Poaceae", "01 natural sciences", "nitrogen", "Soil", "Natural Resources and Conservation", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Seasons", "grassland", "bromus tectorum invasion", "Environmental Sciences", "Ecosystem"], "contacts": [{"organization": "Sperry, L. J., Belnap, J., Evans, R. D.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1890/05-0836"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/05-0836", "name": "item", "description": "10.1890/05-0836", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/05-0836"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-03-01T00:00:00Z"}}, {"id": "10.1016/j.ecoenv.2003.09.011", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:56:46Z", "type": "Journal Article", "created": "2003-12-13", "title": "Effects Of Heavy Metals On Earthworms Along Contamination Gradients In Organic Rich Soils", "description": "Earthworm communities and metal (bio)availability to earthworms along contamination gradients was studied in order to support chemical analyses in risk assessment of metal contaminated soils. Earthworms were sampled in three metal contaminated areas with different habitat and soil properties in Finland. Earthworm and soil samples were collected at three distances (1, 2, and 4 km) from the emission sources. Earthworms were identified as to species and analyzed for heavy metals. Total soil metal concentrations were analyzed using an ultrasound-assisted extraction method and bioavailable metal fraction was estimated by acetic acid extraction. In two of the three areas studied, heavy metal concentrations close to the emission sources were high enough to have harmful effects on earthworms and their environments. In general, diversity, total numbers, and biomass of earthworms increased with increasing distance from the emission sources. When individuals were available for analyses close to the emission source, positive correlations between metal concentrations in the earthworms and those in the soils were observed.", "keywords": ["13. Climate action", "Metals", " Heavy", "Population Dynamics", "Animals", "Biological Availability", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Biomass", "04 agricultural and veterinary sciences", "Oligochaeta", "Risk Assessment", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.ecoenv.2003.09.011"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecotoxicology%20and%20Environmental%20Safety", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.ecoenv.2003.09.011", "name": "item", "description": "10.1016/j.ecoenv.2003.09.011", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.ecoenv.2003.09.011"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-11-01T00:00:00Z"}}, {"id": "10.1890/05-2074", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:00:43Z", "type": "Journal Article", "created": "2007-06-04", "title": "Regulation Of Benthic Algal And Animal Communities By Salt Marsh Plants: Impact Of Shading", "description": "Plant cover is a fundamental feature of many coastal marine and terrestrial systems and controls the structure of associated animal communities. Both natural and human-mediated changes in plant cover influence abiotic sediment properties and thus have cascading impacts on the biotic community. Using clipping (structural) and light (shading) manipulations in two salt marsh vegetation zones (one dominated by Spartina foliosa and one by Salicornia virginica), we tested whether these plant species exert influence on abiotic environmental factors and examined the mechanisms by which these changes regulate the biotic community. In an unshaded (plant and shade removal) treatment, marsh soils exhibited harsher physical properties, a microalgal community composition shift toward increased diatom dominance, and altered macrofaunal community composition with lower species richness, a larger proportion of insect larvae, and a smaller proportion of annelids, crustaceans, and oligochaetes compared to shaded (plant removal, shade mimic) and control treatment plots. Overall, the shaded treatment plots were similar to the controls. Plant cover removal also resulted in parallel shifts in microalgal and macrofaunal isotopic signatures of the most dynamic species. This suggests that animal responses are seen mainly among microalgae grazers and may be mediated by plant modification of microalgae. Results of these experiments demonstrate how light reduction by the vascular plant canopy can control salt marsh sediment communities in an arid climate. This research facilitates understanding of sequential consequences of changing salt marsh plant cover associated with climate or sea level change, habitat degradation, marsh restoration, or plant invasion.", "keywords": ["macrobenthos", "0106 biological sciences", "Conservation of Natural Resources", "Geologic Sediments", "abiotic properties", "Population Dynamics", "Chenopodiaceae", "Environment", "01 natural sciences", "Spartina foliosa", "stable isotope", "Animals", "Biomass", "14. Life underwater", "plant cover", "Ecosystem", "Plant Physiological Phenomena", "biodiversity", "pickleweed", "microalgae", "Eukaryota", "Biodiversity", "15. Life on land", "13. Climate action", "cordgrass", "Sunlight", "Salicornia virginica", "light"]}, "links": [{"href": "https://escholarship.org/content/qt09d6c3jf/qt09d6c3jf.pdf"}, {"href": "https://doi.org/10.1890/05-2074"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/05-2074", "name": "item", "description": "10.1890/05-2074", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/05-2074"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-04-01T00:00:00Z"}}, {"id": "10.1016/j.marpolbul.2005.09.017", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:57:27Z", "type": "Journal Article", "created": "2005-10-25", "title": "The Impact Of Sika Deer Grazing On The Vegetation And Infauna Of Arne Saltmarsh", "description": "Arne saltmarsh, an RSPB reserve, is situated in Poole Harbour on the English south coast. In recent years, there has been concern about possible changes in the suitability of the site for Redshank (Trigna totanus) due to sika deer (Cervus nippon) grazing. In order to assess these changes, 50 plots were established in three different locations: 20 in grazed areas, 20 in ungrazed areas and 10 fenced enclosures. Deer grazing was found to significantly affect structural and species diversity of the saltmarsh vegetation. Spartina anglica dominated in ungrazed areas whilst Salicornia ramosissima and, to a lesser extent, Puccinellia maritima dominated in grazed sites. In grazed areas the vegetation cover was significantly lower, as was vegetation height and volume. In addition, significant changes were observed in the root biomass, which was lower in grazed areas. Infaunal diversity was generally low throughout the survey area. However, significant variations were observed. Invertebrates abundance was more abundant in grazed plots than in ungrazed plots, and least abundant in fenced plots. The study indicated that in its current condition, localised areas of Arne saltmarsh do not provide adequate habitat requirements for Tringa totanus.", "keywords": ["0106 biological sciences", "Conservation of Natural Resources", "Deer", "Population Dynamics", "Animals", " Wild", "Biodiversity", "Feeding Behavior", "15. Life on land", "Poaceae", "01 natural sciences", "England", "Species Specificity", "Animals", "Ecosystem", "Environmental Monitoring"], "contacts": [{"organization": "Justine Hannaford, Eunice Pinn, Anita Diaz,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.marpolbul.2005.09.017"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Marine%20Pollution%20Bulletin", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.marpolbul.2005.09.017", "name": "item", "description": "10.1016/j.marpolbul.2005.09.017", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.marpolbul.2005.09.017"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-01-01T00:00:00Z"}}, {"id": "10.1038/s41586-022-04737-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:58:32Z", "type": "Journal Article", "created": "2022-05-18", "title": "Tropical tree mortality has increased with rising atmospheric water stress", "description": "Evidence exists that tree mortality is accelerating in some regions of the tropics1,2, with profound consequences for the future of the tropical carbon sink and the global anthropogenic carbon budget left to limit peak global warming below 2\u2009\u00b0C. However, the mechanisms that may be driving such mortality changes and whether particular species are especially vulnerable remain unclear3-8. Here we analyse a 49-year record of tree dynamics from 24 old-growth forest plots encompassing a broad climatic gradient across the Australian moist tropics and find that annual tree mortality risk has, on average, doubled across all plots and species over the last 35\u00a0years, indicating a potential halving in life expectancy and carbon residence time. Associated losses in biomass were not offset by gains from growth and recruitment. Plots in less moist local climates presented higher average mortality risk, but local mean climate did not predict the pace of temporal increase in mortality risk. Species varied in the trajectories of their mortality risk, with the highest average risk found nearer to the upper end of the atmospheric vapour pressure deficit niches of species. A long-term increase in vapour pressure deficit was evident across the region, suggesting that thresholds involving atmospheric water stress, driven by global warming, may be a primary cause of increasing tree mortality in moist tropical forests.", "keywords": ["Risk", "0301 basic medicine", "Carbon Sequestration", "Time Factors", "[SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics", "Population dynamics", "Acclimatization", "[SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics", " Phylogenetics and taxonomy", "Global Warming", "History", " 21st Century", "333", "[SDV.BV.BOT] Life Sciences [q-bio]/Vegetal Biology/Botanics", "Trees", "03 medical and health sciences", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "Stress", " Physiological", "[SDV.BID.SPT] Life Sciences [q-bio]/Biodiversity/Systematics", " Phylogenetics and taxonomy", "[SDV.EE.ECO] Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "Community ecology", "Biomass", "580", "Population Density", "Tropical Climate", "0303 health sciences", "Dehydration", "Atmosphere", "Climate-change ecology", "Australia", "Water", "Humidity", "Phylogenetics and taxonomy", "[SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics", "History", " 20th Century", "15. Life on land", "Tropical ecology", "Carbon", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "13. Climate action", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "Forest ecology", "environment/Ecosystems"]}, "links": [{"href": "https://eprints.whiterose.ac.uk/187195/1/Bauman_et_al_ms_Nature_final_AAM.pdf"}, {"href": "https://www.nature.com/articles/s41586-022-04737-7.pdf"}, {"href": "https://doi.org/10.1038/s41586-022-04737-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/s41586-022-04737-7", "name": "item", "description": "10.1038/s41586-022-04737-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41586-022-04737-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-05-18T00:00:00Z"}}, {"id": "10.1111/1365-2656.12746", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-31T06:59:21Z", "type": "Journal Article", "created": "2017-08-18", "title": "Invasive earthworms erode soil biodiversity: A meta-analysis", "description": "Abstract
Biological invasions pose a serious threat to biodiversity and ecosystem functioning across ecosystems. Invasions by ecosystem engineers, in particular, have been shown to have dramatic effects in recipient ecosystems. For instance, invasion by earthworms, a below\uffe2\uff80\uff90ground invertebrate ecosystem engineer, in previously earthworm\uffe2\uff80\uff90free ecosystems alters the physico\uffe2\uff80\uff90chemical characteristics of the soil. Studies have shown that such alterations in the soil can have far\uffe2\uff80\uff90reaching impacts on soil organisms, which form a major portion of terrestrial biodiversity.
Here, we present the first quantitative synthesis of earthworm invasion effects on soil micro\uffe2\uff80\uff90organisms and soil invertebrates based on 430 observations from 30 independent studies.
Our meta\uffe2\uff80\uff90analysis shows a significant decline of the diversity and density of soil invertebrates in response to earthworm invasion with anecic and endogeic earthworms causing the strongest effects. Earthworm invasion effects on soil micro\uffe2\uff80\uff90organisms were context\uffe2\uff80\uff90dependent, such as depending on functional group richness of invasive earthworms and soil depth. Microbial biomass and diversity increased in mineral soil layers, with a weak negative effect in organic soil layers, indicating that the mixing of soil layers by earthworms (bioturbation) may homogenize microbial communities across soil layers.
Our meta\uffe2\uff80\uff90analysis provides a compelling evidence for negative effects of a common invasive below\uffe2\uff80\uff90ground ecosystem engineer on below\uffe2\uff80\uff90ground biodiversity of recipient ecosystems, which could potentially alter the ecosystem functions and services linked to soil biota.
", "keywords": ["Biodiversity change", "0106 biological sciences", "2. Zero hunger", "Soil invertebrates", "Population Dynamics", "Soil micro-organisms", "Biodiversity", "04 agricultural and veterinary sciences", "15. Life on land", "Invertebrates", "01 natural sciences", "Chemistry", "Soil", "Ecosystem engineer", "13. Climate action", "Animals", "0401 agriculture", " forestry", " and fisheries", "Oligochaeta", "Introduced Species", "Biology", "Biological invasion", "Ecosystem", "Soil Microbiology"]}, "links": [{"href": "https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.12746"}, {"href": "https://doi.org/10.1111/1365-2656.12746"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Animal%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/1365-2656.12746", "name": "item", "description": "10.1111/1365-2656.12746", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/1365-2656.12746"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-09-28T00:00:00Z"}}, {"id": "10.1111/1758-2229.12049", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-05-31T06:59:23Z", "type": "Journal Article", "created": "2013-03-14", "title": "Soil Phosphorus Depletion And Shifts In Plant Communities Change Bacterial Community Structure In A Long-Term Grassland Management Trial", "description": "SummaryAgricultural systems rely on healthy soils and their sustainability requires understanding the long\uffe2\uff80\uff90term impacts of agricultural practices on soils, including microbial communities. We examined the impact of 17 years of land management on soil bacterial communities in a New Zealand randomized\uffe2\uff80\uff90block pasture trial. Significant variation in bacterial community structure related to mowing and plant biomass removal, while nitrogen fertilizer had no effect. Changes in soil chemistry and legume abundance described 52% of the observed variation in the bacterial community structure. Legumes (Trifolium species) were absent in unmanaged plots but increased in abundance with management intensity; 11% of the variation in soil bacterial community structure was attributed to this shift in the plant community. Olsen P explained 10% of the observed heterogeneity, which is likely due to persistent biomass removal resulting in P limitation; Olsen P was significantly lower in plots with biomass removed (14\uffe2\uff80\uff89mg kg\uffe2\uff88\uff921\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff891.3SE) compared with plots that were not mown, or where biomass was left after mowing (32\uffe2\uff80\uff89mg kg\uffe2\uff88\uff921\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff891.6SE). Our results suggest that removal of plant biomass and associated phosphorus, as well as shifts in the plant community, have greater long\uffe2\uff80\uff90term impacts on soil bacterial community structure than application of nitrogen fertilizers.
", "keywords": ["2. Zero hunger", "0301 basic medicine", "0303 health sciences", "Bacteria", "Nitrogen", "Microbial Consortia", "Population Dynamics", "Agriculture", "Fabaceae", "Phosphorus", "15. Life on land", "Poaceae", "Soil", "03 medical and health sciences", "Biomass", "Fertilizers", "Ecosystem", "Soil Microbiology", "New Zealand"]}, "links": [{"href": "https://doi.org/10.1111/1758-2229.12049"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Microbiology%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/1758-2229.12049", "name": "item", "description": "10.1111/1758-2229.12049", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/1758-2229.12049"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-04-10T00:00:00Z"}}, {"id": "10.1111/ele.12954", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-31T06:59:26Z", "type": "Journal Article", "created": "2017-08-01", "title": "Opposing effects of floral visitors and soil conditions on the determinants of competitive outcomes maintain species diversity in heterogeneous landscapes", "description": "Theory argues that both soil conditions and aboveground trophic interactions are equally important for determining plant species diversity. However, it remains unexplored how they modify the niche differences that stabilise species coexistence and the average fitness differences driving competitive dominance. We conducted a field study in Mediterranean annual grasslands to parameterise population models of six competing plant species. Spatially explicit floral visitor assemblages and soil salinity variation were characterized for each species. Both floral visitors and soil salinity modified species population dynamics via direct changes in seed production and indirect changes in competitive responses. Although the magnitude and sign of these changes were species specific, floral visitors promoted coexistence at neighbourhood scales while soil salinity did so over larger scales by changing the superior competitor's identity. Our results show how below and aboveground interactions maintain diversity in heterogeneous landscapes through their opposing effects on the determinants of competitive outcomes.
", "keywords": ["2. Zero hunger", "Salinity", "Community assembly", "Pollinators", "Spatial structure", "Population Dynamics", "Plants", "15. Life on land", "Soil", "Multitrophic interactions", "Mutualism", "13. Climate action", "Fitness", "Niche", "Seeds", "Coexistence", "Demography"]}, "links": [{"href": "https://www.biorxiv.org/content/10.1101/170423v1.full.pdf"}, {"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/ele.12954"}, {"href": "https://doi.org/10.1111/ele.12954"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/ele.12954", "name": "item", "description": "10.1111/ele.12954", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/ele.12954"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-07-31T00:00:00Z"}}, {"id": "10.1371/journal.pone.0076447", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-31T07:00:18Z", "type": "Journal Article", "created": "2013-09-26", "title": "The Arbuscular Mycorrhizal Fungal Community Response To Warming And Grazing Differs Between Soil And Roots On The Qinghai-Tibetan Plateau", "description": "Arbuscular mycorrhizal (AM) fungi form symbiotic associations with most plant species in terrestrial ecosystems, and are affected by environmental variations. To reveal the impact of disturbance on an AM fungal community under future global warming, we examined the abundance and community composition of AM fungi in both soil and mixed roots in an alpine meadow on the Qinghai-Tibetan Plateau, China. Warming and grazing had no significant effect on AM root colonization, spore density and extraradical hyphal density. A total of 65 operational taxonomic units (OTUs) of AM fungi were identified from soil and roots using molecular techniques. AM fungal OTU richness was higher in soil (54 OTUs) than in roots (34 OTUs), and some AM fungi that differed between soil and roots, showed significantly biased occurrence to warming or grazing. Warming and grazing did not significantly affect AM fungal OTU richness in soil, but warming with grazing significantly increased AM fungal OTU richness in roots compared to the grazing-only treatment. Non-metric multidimensional scaling analysis showed that the AM fungal community composition was significantly different between soil and roots, and was significantly affected by grazing in roots, whereas in soil it was significantly affected by warming and plant species richness. The results suggest that the AM fungal community responds differently to warming and grazing in soil compared with roots. This study provides insights into the role of AM fungi under global environmental change scenarios in alpine meadows of the Qinghai-Tibetan Plateau.", "keywords": ["0106 biological sciences", "Hot Temperature", "Science", "Molecular Sequence Data", "Population Dynamics", "Global Warming", "Plant Roots", "Polymerase Chain Reaction", "01 natural sciences", "Species Specificity", "Mycorrhizae", "Herbivory", "Phylogeny", "Soil Microbiology", "2. Zero hunger", "Analysis of Variance", "Base Sequence", "Models", " Genetic", "Altitude", "Q", "R", "Bayes Theorem", "Sequence Analysis", " DNA", "04 agricultural and veterinary sciences", "Spores", " Fungal", "15. Life on land", "Biota", "Medicine", "0401 agriculture", " forestry", " and fisheries", "Polymorphism", " Restriction Fragment Length", "Research Article"]}, "links": [{"href": "https://doi.org/10.1371/journal.pone.0076447"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/PLoS%20ONE", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1371/journal.pone.0076447", "name": "item", "description": "10.1371/journal.pone.0076447", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1371/journal.pone.0076447"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-09-26T00:00:00Z"}}, {"id": "10.1890/04-0788", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:00:43Z", "type": "Journal Article", "created": "2007-06-06", "title": "Patterns Of Litter Disappearance In A Northern Hardwood Forest Invaded By Exotic Earthworms", "description": "A field study was conducted to evaluate the effects of exotic earthworm invasions on the rates of leaf litter disappearance in a northern hardwood forest in southcentral New York, USA. Specifically, we assessed whether differences in litter quality and the species composition of exotic earthworm communities affected leaf litter disappearance rates. Two forest sites with contrasting communities of exotic earthworms were selected, and disappearance rates of sugar maple and red oak litter were estimated in litter boxes in adjacent earthworm-free, transition, and earthworm-invaded plots within each site. After 540 days in the field, 1.7-3 times more litter remained in the reference plots than in the earthworm-invaded plots. In the earthworm-invaded plots, rates of disappearance of sugar maple litter were higher than for oak litter during the first year, but by the end of the experiment, the amount of sugar maple and oak litter remaining in the earthworm-invaded plots was identical within each site. The composition of the earthworm communities significantly affected the patterns of litter disappearance. In the site dominated by the anecic earthworm Lumbricus terrestris and the endogeic Aporrectodea tuberculata, the percentage of litter remaining after 540 days (approximately 17%) was significantly less than at the site dominated by L. rubellus and Octolasion tyrtaeum (approximately 27%). This difference may be attributed to the differences in feeding behavior of the two litter-feeding species: L. terrestris buries entire leaves in vertical burrows, whereas L. rubellus usually feeds on litter at the soil surface, leaving behind leaf petioles and veins. Our results showed that earthworms not only accelerate litter disappearance rates, but also may reduce the differences in decomposition rates that result from different litter qualities at later stages of decay. Similarly, our results indicate that earthworm effects on decomposition vary with earthworm community composition. Furthermore, because earthworm invasion can involve a predictable shift in community structure along invasion fronts or through time, the community dynamics of invasion are important in predicting the spatial and temporal effects of earthworm invasion on litter decomposition, especially at later stages of decay.", "keywords": ["0106 biological sciences", "Time Factors", "Geography", "Climate", "Population Dynamics", "New York", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Trees", "Plant Leaves", "Soil", "Animals", "0401 agriculture", " forestry", " and fisheries", "Oligochaeta", "Fertilizers", "Ecosystem", "Soil Microbiology"]}, "links": [{"href": "https://doi.org/10.1890/04-0788"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/04-0788", "name": "item", "description": "10.1890/04-0788", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/04-0788"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-02-01T00:00:00Z"}}, {"id": "10.1890/05-0685", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-31T07:00:43Z", "type": "Journal Article", "created": "2007-06-06", "title": "Experimental Warming, Not Grazing, Decreases Rangeland Quality On The Tibetan Plateau", "description": "We investigated experimental warming and simulated grazing (clipping) effects on rangeland quality, as indicated by vegetation production and nutritive quality, in winter-grazed meadows and summer-grazed shrublands on the Tibetan Plateau, a rangeland system experiencing climatic and pastoral land use changes. Warming decreased total aboveground net primary productivity (ANPP) by 40 g x m(-2) x yr(-1) at the meadow habitats and decreased palatable ANPP (total ANPP minus non-palatable forb ANPP) by 10 g x m(-2) x yr(-1) at both habitats. The decreased production of the medicinal forb Gentiana straminea and the increased production of the non-palatable forb Stellera chamaejasme with warming also reduced rangeland quality. At the shrubland habitats, warming resulted in less digestible shrubs, whose foliage contains 25% digestible dry matter (DDM), replacing more digestible graminoids, whose foliage contains 60% DDM. This shift from graminoids to shrubs not only results in lower-quality forage, but could also have important consequences for future domestic herd composition. Although warming extended the growing season in non-clipped plots, the reduced rangeland quality due to decreased vegetative production and nutritive quality will likely overwhelm the improved rangeland quality associated with an extended growing season. Grazing maintained or improved rangeland quality by increasing total ANPP by 20-40 g x m(-2) x yr(-1) with no effect on palatable ANPP. Grazing effects on forage nutritive quality, as measured by foliar nitrogen and carbon content and by shifts in plant group ANPP, resulted in improved forage quality. Grazing extended the growing season at both habitats, and it advanced the growing season at the meadows. Synergistic interactions between warming and grazing were present, such that grazing mediated the warming-induced declines in vegetation production and nutritive quality. Moreover, combined treatment effects were nonadditive, suggesting that we cannot predict the combined effect of global changes and human activities from single-factor studies. Our findings suggest that the rangelands on the Tibetan Plateau, and the pastoralists who depend on them, may be vulnerable to future climate changes. Grazing can mitigate the negative warming effects on rangeland quality. For example, grazing management may be an important tool to keep warming-induced shrub expansion in check. Moreover, flexible and opportunistic grazing management will be required in a warmer future.", "keywords": ["2. Zero hunger", "Hot Temperature", "Time Factors", "Population Dynamics", "Agriculture", "Feeding Behavior", "04 agricultural and veterinary sciences", "Plants", "15. Life on land", "Tibet", "01 natural sciences", "13. Climate action", "Animals", " Domestic", "Animals", "0401 agriculture", " forestry", " and fisheries", "Ecosystem", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Julia A. Klein, John Harte, Xinquan Zhao,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1890/05-0685"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/05-0685", "name": "item", "description": "10.1890/05-0685", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/05-0685"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-03-01T00:00:00Z"}}, {"id": "10.1890/06-0399", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-05-31T07:00:43Z", "type": "Journal Article", "created": "2007-06-04", "title": "Rainfall And Soils Modify Plant Community Response To Grazing In Serengeti National Park", "description": "Terrestrial plant community responses to herbivory depend on resource availability, but the separate influences of different resources are difficult to study because they often correlate across natural environmental gradients. We studied the effects of excluding ungulate herbivores on plant species richness and composition, as well as available soil nitrogen (N) and phosphorus (P), across eight grassland sites in Serengeti National Park (SNP), Tanzania. These sites varied independently in rainfall and available soil N and P. Excluding herbivores decreased plant species richness at all sites and by an average of 5.4 species across all plots. Although plant species richness was a unimodal function of rainfall in both grazed and ungrazed plots, fences caused a greater decrease in plant species richness at sites of intermediate rainfall compared to sites of high or low rainfall. In terms of the relative or proportional decreases in plant species richness, excluding herbivores caused the strongest relative decreases at lower rainfall and where exclusion of herbivores increased available soil P. Herbivore exclusion increased among-plot heterogeneity in species composition but decreased coexistence of congeneric grasses. Compositional similarity between grazed and ungrazed treatments decreased with increasing rainfall due to greater forb richness in exclosures and greater sedge richness outside exclosures and was not related to effects of excluding herbivores on soil nutrients. Our results show that plant resources, especially water and P, appear to modulate the effects of herbivores on tropical grassland plant diversity and composition. We show that herbivore effects on soil P may be an important and previously unappreciated mechanism by which herbivores influence plant diversity, at least in tropical grasslands.", "keywords": ["2. Zero hunger", "0106 biological sciences", "Food Chain", "Nitrogen", "Rain", "Population Dynamics", "Phosphorus", "Biodiversity", "15. Life on land", "Poaceae", "Tanzania", "01 natural sciences", "Soil", "Species Specificity", "Animals", "14. Life underwater", "Plants", " Edible", "Ecosystem"], "contacts": [{"organization": "Mark E. Ritchie, T. Michael Anderson, Samuel J. McNaughton,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1890/06-0399"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/06-0399", "name": "item", "description": "10.1890/06-0399", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/06-0399"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-05-01T00:00:00Z"}}, {"id": "10.1890/08-0784.1", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-05-31T07:00:44Z", "type": "Journal Article", "created": "2009-08-18", "description": "Over the past several decades, the expansion and thickening of woodlands in the western United States has caused a range of ecological changes. Woody expansion often leads to increases in soil organic matter (SOM) pools with implications for both biogeochemical cycling and ecological responses to management strategies aimed at restoration of rangeland ecosystems. Here we directly measure C and N stocks and use simple non\uffe2\uff80\uff90steady\uffe2\uff80\uff90state models to quantify the dynamics of soil C accumulation under and around trees of varied ages in southern Utah woodlands. In the two pinyon\uffe2\uff80\uff93juniper forests of Grand Staircase Escalante National Monument studied here, we found \uffe2\uff88\uffbc3 kg C/m2 and \uffe2\uff88\uffbc0.12 kg N/m2 larger C and N stocks in soils under pinyon canopies compared to interspace sites. These apparent increases in soil C and N stocks under woody plant species were dominated by elevated SOM in the surface 10 cm of soil, particularly within non\uffe2\uff80\uff90mineral\uffe2\uff80\uff90associated organic fractions. The most significant accumulation of C was in the >850 \uffce\uffbcm fraction, which had an estimated C residence time of <20 yr. Rates of carbon accumulation following pinyon\uffe2\uff80\uff93juniper expansion appear to be dominated by changes in this fast\uffe2\uff80\uff90cycling surface soil fraction. In contrast, we found that after separating >850 \uffce\uffbcm organic matter from the remaining light fraction (LF), C had residence times of \uffe2\uff88\uffbc400 yr and mineral\uffe2\uff80\uff90associated (MA) soil C had residence times of \uffe2\uff88\uffbc600 yr. As a result, we calculate that input rates to the LF and MA pools to be 10 \uffc2\uffb1 1 and 0.68 \uffc2\uffb1 0.15 g\uffc2\uffb7m\uffe2\uff88\uff922\uffc2\uffb7yr\uffe2\uff88\uff921 (mean \uffc2\uffb1 SE), respectively. These findings suggest that one consequence of management activities aimed at the reduction of pinyon\uffe2\uff80\uff93juniper biomass may be a relatively rapid loss of soil C and N pools associated with the >850 \uffce\uffbcm fraction. The temporal dynamics of the <850 \uffce\uffbcm pools suggest that carbon and nitrogen continue to accumulate in these fractions, albeit at very slow rates, and suggest that multidecadal storage of C following tree recruitment is limited to relatively small, subsurface fractions of the total soil C pool.
", "keywords": ["Nitrogen", "Population Dynamics", "04 agricultural and veterinary sciences", "15. Life on land", "Pinus", "01 natural sciences", "Carbon", "Soil", "Juniperus", "Utah", "0401 agriculture", " forestry", " and fisheries", "Desert Climate", "Ecosystem", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1890/08-0784.1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/08-0784.1", "name": "item", "description": "10.1890/08-0784.1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/08-0784.1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-09-01T00:00:00Z"}}, {"id": "10.2134/jeq2001.302501x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:00:56Z", "type": "Journal Article", "created": "2010-06-14", "title": "Effects Of Elevated Carbon Dioxide On Soils In A Florida Scrub Oak Ecosystem", "description": "ABSTRACTThe results of a 3\uffe2\uff80\uff90yr study on the effects of elevated CO2on soil N and P, soil pCO2, and calculated CO2efflux in a fire\uffe2\uff80\uff90regenerated Florida scrub oak ecosystem are summarized. We hypothesized that elevated CO2would cause (i) increases in soil pCO2and soil respiration and (ii) reduced levels of soil\uffe2\uff80\uff90available N and P. The effects of elevated CO2on soil N availability differed according to the method used. Results of resin lysimeter collections and anion exchange membrane tests in the field showed reduced NO\uffe2\uff88\uff923in soils in Years 1 and 3. On the other hand, re\uffe2\uff80\uff90analysis of homogenized, buried soil bags after 1 yr suggested a relative increase in N availability (lower C to N ratio) under elevated CO2In the case of P, the buried bags and membranes suggested a negative effect of CO2on P during the first year; this faded over time, however, as P availability declined overall, probably in response to P uptake. Elevated CO2had no effect on soil pCO2or calculated soil respiration at any time, further suggesting that plant rather than microbial uptake was the primary factor responsible for the observed changes in N and P availability with elevated CO2
", "keywords": ["Soil", "Nitrogen", "Population Dynamics", "Biological Availability", "0401 agriculture", " forestry", " and fisheries", "Phosphorus", "04 agricultural and veterinary sciences", "Carbon Dioxide", "Plants", "15. Life on land", "Ecosystem", "Fires", "Soil Microbiology"], "contacts": [{"organization": "Graham J. Hymus, Bert G. Drake, Paul Dijkstra, Bruce A. Hungate, David W. Johnson,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2134/jeq2001.302501x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Quality", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2134/jeq2001.302501x", "name": "item", "description": "10.2134/jeq2001.302501x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2001.302501x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2001-03-01T00:00:00Z"}}, {"id": "10.3390/agronomy11040747", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:01:36Z", "type": "Journal Article", "created": "2021-04-12", "title": "Defining Integrated Weed Management: A Novel Conceptual Framework for Models", "description": "Weed population dynamics models are an important tool for predicting the outcome of alternative Integrated Weed Management (IWM) scenarios. The growing problem of herbicide resistance has increased the urgency for these tools in the design of sustainable IWM solutions. We developed a conceptual framework for defining IWM as a standardised input template to allow output from different models to be compared and to design IWM scenarios. The framework could also be used as a quantitative metric to determine whether more diverse systems are more sustainable and less vulnerable to herbicide resistance using empirical data. Using the logic of object-oriented programming, we defined four classes of weed management options based on the stage in the weed life cycle that they impact and processes that mediate their effects. Objects in the same class share a common set of properties that determine their behaviour in weed population dynamics models. Any weed control \uffe2\uff80\uff9cevent\uffe2\uff80\uff9d in a system is associated with an object, meaning alternative management scenarios can be built by systematically adding events to a model either to compare existing systems or design novel approaches. Our framework is designed to be generic, allowing IWM systems from different cropping systems and countries to be compared.
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