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A tipping point in ...
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Engelbrecht Clemmensen, KarinaSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Department of Forest Mycology and Plant Pathology
(author)
A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen
- Article/chapterEnglish2021
Publisher, publication year, extent ...
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2021-03-22
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Wiley,2021
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Wiley: 12 months,2024
Numbers
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LIBRIS-ID:oai:slubar.slu.se:111313
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https://res.slu.se/id/publ/111313URI
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https://doi.org/10.1111/ele.13735DOI
Supplementary language notes
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Language:English
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Summary in:English
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Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Tundra 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-associated 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.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Brandström Durling, MikaelSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Department of Forest Mycology and Plant Pathology(Swepub:slu)49619
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Hallin, SaraSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Department of Forest Mycology and Plant Pathology(Swepub:slu)48245
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Finlay, RogerSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Department of Forest Mycology and Plant Pathology(Swepub:slu)49249
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Lindahl, BjörnSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mark och miljö,Department of Soil and Environment(Swepub:slu)50956
(author)
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Sveriges lantbruksuniversitetDepartment of Forest Mycology and Plant Pathology
(creator_code:org_t)
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Sveriges lantbruksuniversitet
Related titles
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In:Ecology Letters: Wiley24, s. 1193-12041461-023X1461-0248
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