{"type": "FeatureCollection", "features": [{"id": "10.5061/dryad.79cnp5htw", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:02:13Z", "type": "Dataset", "title": "Data from: A tipping-point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen", "description": "unspecifiedTundra ecosystems are global belowground sinks for atmospheric CO2.  Ongoing warming-induced encroachment by shrubs and trees risks turning  this sink into a CO2 source, resulting in a positive feedback on climate  warming. To advance mechanistic understanding of how shifts in mycorrhizal  types affect long-term carbon (C) and nitrogen (N) stocks, we studied  small-scale soil depth profiles of fungal communities and C-N dynamics  across a subarctic-alpine forest-heath vegetation gradient. Belowground  organic stocks decreased abruptly at the transition from heath to forest,  linked to the presence of certain tree-associateds ectomycorrhizal fungi  that contribute to decomposition when mining N from organic matter. In  contrast, ericoid mycorrhizal plants and fungi were associated with  organic matter accumulation and slow decomposition. If climatic controls  on arctic-alpine forest lines are relaxed, increased decomposition will  likely outbalance increased plant productivity, decreasing the overall C  sink capacity of displaced tundra.", "keywords": ["C-N dynamics", "ectomycorrhizal exploration type", "functional genes", "ergosterol", "ITS2 meta-barcoding", "Fungal community", "Arctic greening", "Climate feedback", "15. Life on land", "litter saprotrophs", "mycorrhizal type", "litter bags", "13. Climate action", "soil solution", "FOS: Biological sciences", "soil carbon storage", "quantitative PCR", "soil profiles", "Ectomycorrhizal fungal community", "Ericoid Mycorrhiza", "treeline ecotone"], "contacts": [{"organization": "Clemmensen, Karina E, Durling, Mikael B, Michelsen, Anders, Hallin, Sara, Finlay, Roger D, Lindahl, Bj\u00f6rn D,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5061/dryad.79cnp5htw"}, {"rel": "self", "type": "application/geo+json", "title": "10.5061/dryad.79cnp5htw", "name": "item", "description": "10.5061/dryad.79cnp5htw", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5061/dryad.79cnp5htw"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-02-28T00:00:00Z"}}, {"id": "10.5061/dryad.ht4t3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:02:17Z", "type": "Dataset", "title": "Data from: Host phenology and potential saprotrophism of ectomycorrhizal fungi in the boreal forest", "description": "Open AccessPhenology-induced changes in carbon assimilation by trees may affect  carbon stored in fine roots and as a consequence, alter carbon allocated  to ectomycorrhizal fungi. Two competing models exist to explain carbon  mobilization by ectomycorrhizal fungi. Under the \u2018saprotrophy model\u2019,  decreased allocation of carbon may induce saprotrophic behaviour in  ectomycorrhizal fungi, resulting in the decomposition of organic matter to  mobilize carbon. Alternatively, under the \u2018nutrient acquisition model\u2019,  decomposition may instead be driven by the acquisition of nutrients locked  within soil organic matter compounds, with carbon mobilization a secondary  process. We tested whether phenology-induced shifts in carbon reserves of  fine roots of aspen (Populus tremuloides) affect potential activity of  four carbon-compound degrading enzymes, \u03b2-glucuronidase, \u03b2-glucosidase,  N-acetylglucosaminidase and laccase, by ectomycorrhizal fungi.  Ectomycorrhizal roots from mature aspen were collected across eight stands  in north-eastern Alberta, Canada, and analysed during tree dormancy, leaf  flush, full leaf expansion and leaf abscission. We predicted potential  extracellular enzyme activity to be highest when root carbon reserves were  lowest, should host phenology induce saprotrophism. Further, we  anticipated enzyme activity to be mediated by invertase, a plant-derived  enzyme which makes carbon available to fungal symbionts in the  plant\u2013fungus interface. Root carbon reserves were positively correlated  with invertase, suggesting phenology may affect carbon allocation to  ectomycorrhizal fungi. However, of the four enzymes, host phenology had  the largest effect on \u03b2-glucuronidase, but activity of this enzyme was not  correlated with root carbon reserves or invertase. Low-biomass  ectomycorrhizas had greater potential laccase activity than high-biomass  ectomycorrhizas, highlighting discrete functional traits in fungi for  litter decomposition. Our results suggest that the decomposition of  organic matter may be driven by foraging by fungi for nutrients locked  within organic compounds rather than for mobilizing carbon. Furthermore,  the potential ability to degrade lignin was more common in low-biomass  ectomycorrhizas when compared to high-biomass ectomycorrhizas.", "keywords": ["2. Zero hunger", "ectomycorrhizal exploration type", "extracellular enzymes", "15. Life on land", "nonstructural carbohydrates", "invertase"], "contacts": [{"organization": "Hupperts, Stefan F., Pritsch, Karin, Landh\u00e4usser, Simon M., Karst, Justine,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5061/dryad.ht4t3"}, {"rel": "self", "type": "application/geo+json", "title": "10.5061/dryad.ht4t3", "name": "item", "description": "10.5061/dryad.ht4t3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5061/dryad.ht4t3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-06-06T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=ectomycorrhizal+exploration+type&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=ectomycorrhizal+exploration+type&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=ectomycorrhizal+exploration+type&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=ectomycorrhizal+exploration+type&offset=2", "hreflang": "en-US"}], "numberMatched": 2, "numberReturned": 2, "distributedFeatures": [], "timeStamp": "2026-05-31T13:57:03.501561Z"}