Data from: A tipping-point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen
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...
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ftzenodo:oai:zenodo.org:4958161 2023-06-06T11:48:55+02:00 Data from: A tipping-point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen Clemmensen, Karina 2022-02-28 https://zenodo.org/record/4958161 https://doi.org/10.5061/dryad.79cnp5htw unknown https://zenodo.org/communities/dryad https://zenodo.org/record/4958161 https://doi.org/10.5061/dryad.79cnp5htw oai:zenodo.org:4958161 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Fungal community Ectomycorrhizal fungal community ectomycorrhizal exploration type soil carbon storage Climate feedback ITS2 meta-barcoding litter bags litter saprotrophs C-N dynamics soil profiles mycorrhizal type Ericoid Mycorrhiza treeline ecotone Arctic greening functional genes quantitative PCR soil solution ergosterol info:eu-repo/semantics/other dataset 2022 ftzenodo https://doi.org/10.5061/dryad.79cnp5htw 2023-04-13T23:21:12Z 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 ectomycorrhizal fungi that seemingly 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. Soil samples were taken in 24 plots representing four vegetation types along a subarctic-alpine birch forest-heath tundra ecotone in Northern Sweden. Soil cores were split into fine-scaled layers, which were analysed for various biochemical characteristics and for fungal communities based on ITS2 meta-barcoding. Please find all details on sampling and analyses in the associated paper. Dataset Arctic Greening Arctic Northern Sweden Subarctic Tundra Zenodo Arctic |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Fungal community Ectomycorrhizal fungal community ectomycorrhizal exploration type soil carbon storage Climate feedback ITS2 meta-barcoding litter bags litter saprotrophs C-N dynamics soil profiles mycorrhizal type Ericoid Mycorrhiza treeline ecotone Arctic greening functional genes quantitative PCR soil solution ergosterol |
spellingShingle |
Fungal community Ectomycorrhizal fungal community ectomycorrhizal exploration type soil carbon storage Climate feedback ITS2 meta-barcoding litter bags litter saprotrophs C-N dynamics soil profiles mycorrhizal type Ericoid Mycorrhiza treeline ecotone Arctic greening functional genes quantitative PCR soil solution ergosterol Clemmensen, Karina Data from: A tipping-point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen |
topic_facet |
Fungal community Ectomycorrhizal fungal community ectomycorrhizal exploration type soil carbon storage Climate feedback ITS2 meta-barcoding litter bags litter saprotrophs C-N dynamics soil profiles mycorrhizal type Ericoid Mycorrhiza treeline ecotone Arctic greening functional genes quantitative PCR soil solution ergosterol |
description |
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 ectomycorrhizal fungi that seemingly 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. Soil samples were taken in 24 plots representing four vegetation types along a subarctic-alpine birch forest-heath tundra ecotone in Northern Sweden. Soil cores were split into fine-scaled layers, which were analysed for various biochemical characteristics and for fungal communities based on ITS2 meta-barcoding. Please find all details on sampling and analyses in the associated paper. |
format |
Dataset |
author |
Clemmensen, Karina |
author_facet |
Clemmensen, Karina |
author_sort |
Clemmensen, Karina |
title |
Data from: A tipping-point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen |
title_short |
Data from: A tipping-point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen |
title_full |
Data from: A tipping-point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen |
title_fullStr |
Data from: A tipping-point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen |
title_full_unstemmed |
Data from: A tipping-point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen |
title_sort |
data from: a tipping-point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen |
publishDate |
2022 |
url |
https://zenodo.org/record/4958161 https://doi.org/10.5061/dryad.79cnp5htw |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Greening Arctic Northern Sweden Subarctic Tundra |
genre_facet |
Arctic Greening Arctic Northern Sweden Subarctic Tundra |
op_relation |
https://zenodo.org/communities/dryad https://zenodo.org/record/4958161 https://doi.org/10.5061/dryad.79cnp5htw oai:zenodo.org:4958161 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.79cnp5htw |
_version_ |
1767954489208209408 |