{"type": "FeatureCollection", "features": [{"id": "10.1007/s00442-006-0515-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:14:49Z", "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": "10.1016/j.chemosphere.2017.06.060", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:01Z", "type": "Journal Article", "created": "2017-06-15", "title": "Effects Of Short-Term Invasion Of Spartina Alterniflora And The Subsequent Restoration Of Native Mangroves On The Soil Organic Carbon, Nitrogen And Phosphorus Stock", "description": "The exotic cordgrass Spartina alterniflora has severely invaded the mangrove wetlands in southern China and ecological restoration using native mangroves was conducted in an attempt to control this invasive species. In this study, the contents and pools of soil organic carbon (SOC), total nitrogen (TN) and total phosphorus (TP) were quantified to investigate the invasive effects of S.\u00a0alterniflora and then to evaluate whether the ecological restoration of native mangrove could reverse those effects. S.\u00a0alterniflora only showed significantly higher organic carbon content in the surface 0-10\u00a0cm of soil than in the uninvaded mudflat. The high \u03b413C values in the surface soil of the invaded habitat demonstrated that S.\u00a0alterniflora contributed 42.6-62.2% of the organic carbon. The SOC for invasive S.\u00a0alterniflora and newly restored mangroves (4 years and 14 years) was not enhanced in comparison to the unvegetated mudflat. S.\u00a0alterniflora significantly increased the surface soil TN content, but decreased the available phosphorus content and TP density. The TN densities increased gradually with the mangrove restoration, while the TP densities were only slightly influenced. The results suggested that short-term invasion of S.\u00a0alterniflora and subsequent mangrove restoration did not alter SOC or TN pool sizes, but S.\u00a0alterniflora was shown to affect the potential carbon storage capacity produced by the mangroves in the Zhangjiang Estuary.", "keywords": ["China", "Nitrogen", "Phosphorus", "15. Life on land", "Poaceae", "01 natural sciences", "Carbon", "6. Clean water", "Soil", "Wetlands", "Estuaries", "Introduced Species", "Ecosystem", "Environmental Restoration and Remediation", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2017.06.060"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2017.06.060", "name": "item", "description": "10.1016/j.chemosphere.2017.06.060", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2017.06.060"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-10-01T00:00:00Z"}}, {"id": "10.1111/1365-2656.12746", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:18:37Z", "type": "Journal Article", "created": "2017-08-18", "title": "Invasive earthworms erode soil biodiversity: A meta-analysis", "description": "Abstract<p>   <p>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.</p>  <p>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.</p>  <p>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.</p>  <p>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.</p>  </p>", "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/gcb.13446", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:18:44Z", "type": "Journal Article", "created": "2016-09-03", "title": "The unseen invaders: introduced earthworms as drivers of change in plant communities in North American forests (a meta-analysis)", "description": "Abstract<p>Globally, biological invasions can have strong impacts on biodiversity as well as ecosystem functioning. While less conspicuous than introduced aboveground organisms, introduced belowground organisms may have similarly strong effects. Here, we synthesize for the first time the impacts of introduced earthworms on plant diversity and community composition in North American forests. We conducted a meta\uffe2\uff80\uff90analysis using a total of 645 observations to quantify mean effect sizes of associations between introduced earthworm communities and plant diversity, cover of plant functional groups, and cover of native and non\uffe2\uff80\uff90native plants. We found that plant diversity significantly declined with increasing richness of introduced earthworm ecological groups. While plant species richness or evenness did not change with earthworm invasion, our results indicate clear changes in plant community composition: cover of graminoids and non\uffe2\uff80\uff90native plant species significantly increased, and cover of native plant species (of all functional groups) tended to decrease, with increasing earthworm biomass. Overall, these findings support the hypothesis that introduced earthworms facilitate particular plant species adapted to the abiotic conditions of earthworm\uffe2\uff80\uff90invaded forests. Further, our study provides evidence that introduced earthworms are associated with declines in plant diversity in North American forests. Changing plant functional composition in these forests may have long\uffe2\uff80\uff90lasting effects on ecosystem functioning.</p>", "keywords": ["0106 biological sciences", "NONNATIVE EARTHWORMS", "ECOSYSTEM ENGINEER", "introduced earthworms", "biological invasions", "SEEDLING ESTABLISHMENT", "Forests", "01 natural sciences", "BIOLOGICAL INVASIONS", "GLOBAL METAANALYSIS", "HARDWOOD FORESTS", "Journal Article", "BIODIVERSITY CHANGE", "Animals", "ENDOGEIC EARTHWORMS", "earthworm invasion", "community composition", "Oligochaeta", "Ecosystem", "Biodiversity", "Plants", "15. Life on land", "Primary Research Articles", "plant diversity", "United States", "plant communities", "meta-analysis", "Environmental sciences", "Ecology", " evolutionary biology", "13. Climate action", "TEMPERATE FORESTS", "INVASIVE EARTHWORMS", "Introduced Species"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.13446"}, {"href": "https://doi.org/10.1111/gcb.13446"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.13446", "name": "item", "description": "10.1111/gcb.13446", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.13446"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-09-03T00:00:00Z"}}, {"id": "10.2307/1940889", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:20:33Z", "type": "Journal Article", "created": "2006-05-09", "title": "Effects Of Invasion Of An Aspen Forest (Canada) By Dendrobaena-Octaedra (Lumbricidae) On Plant-Growth", "description": "<p>Effects of invasion of an aspen forest in the Canadian Rocky Mountains by the earthworm Dendrobaena octaedra (Savigny) on nutrient mineralization, soil microflora, and plant growth were investigated during the growth period of 1992. Experimental chambers with reconstructed forest floor were placed in the field and destructively sampled after 7 and 14 wk. D. octaedra enhanced the shoot biomass of the grass Agropyron trachycaulum (Link) Malte (Poaceae) and increased the shoot\uffe2\uff80\uff94to\uffe2\uff80\uff94root ratio during early plant growth. Microbial biomass, basal respiration and respiratory quotient qCO2 in L/F layer material were reduced by D. octaedra but increased in the H layer. The nutrient (NH4+, NO3\uffe2\uff80\uff94, PO43\uffe2\uff80\uff94) content in soil was also affected by D. octaedra but the effects were small. Effects of the earthworms on soil nutrient content were masked by the great variation in the data and by leaching of nutrients from experimental chambers.</p>", "keywords": ["roots", "microbes and plants", "soil chemistry", "growth", "populus", "microflora and plants", "Invasion effects on nutrients", "Alberta", "forest soils", "microflora and plants in aspen forest", "Dendrobaena octaedra (Oligochaeta): Element cycles", "Forest and woodland", "nutrients", "biomass production", "Invasion consequences for ecosystem processes in forest soils", "impacts of invasion in aspen forest soils", "mineralization", "Annelids", "effects", "invasion impacts on ecosystem processes", "forests", "2. Zero hunger", "plant morphology", "effects on nutrients", "biomass", "soil fertility", "grasslands", "Habitat colonization", "KananaskisValley", "woodland grasslands", "Dispersal", "04 agricultural and veterinary sciences", "15. Life on land", "invasion", "Invasion of aspen forest soils effects on nutrients", "Invertebrates", "soil biology", "introduced species", "Soil habitat", "Aspen forest soils", "Nutrient mineralization", "0401 agriculture", " forestry", " and fisheries", "dendrobaena", "Impact on habitat", "root shoot ratio", "elymus trachycaulus", "soil fauna", "forest trees", "shoots"], "contacts": [{"organization": "Scheu, Stefan, Parkinson, Dennis,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/1940889"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1940889", "name": "item", "description": "10.2307/1940889", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1940889"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1994-12-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Introduced+Species&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=Introduced+Species&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Introduced+Species&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Introduced+Species&offset=5", "hreflang": "en-US"}], "numberMatched": 5, "numberReturned": 5, "distributedFeatures": [], "timeStamp": "2026-07-26T13:13:38.188448Z"}