Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient
Abstract Climate change–driven permafrost thaw has a strong influence on pan‐Arctic regions, via, for example, the formation of thermokarst ponds. These ponds are hotspots of microbial carbon cycling and greenhouse gas production, and efforts have been put on disentangling the role of bacteria and a...
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Online Access: | http://dx.doi.org/10.1111/gcb.15852 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.15852 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.15852 |
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crwiley:10.1111/gcb.15852 2024-06-02T08:00:59+00:00 Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient Kluge, Mariana Wauthy, Maxime Clemmensen, Karina Engelbrecht Wurzbacher, Christian Hawkes, Jeffrey A. Einarsdottir, Karolina Rautio, Milla Stenlid, Jan Peura, Sari Science for Life Laboratory 2021 http://dx.doi.org/10.1111/gcb.15852 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.15852 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.15852 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Global Change Biology volume 27, issue 22, page 5889-5906 ISSN 1354-1013 1365-2486 journal-article 2021 crwiley https://doi.org/10.1111/gcb.15852 2024-05-03T11:18:51Z Abstract Climate change–driven permafrost thaw has a strong influence on pan‐Arctic regions, via, for example, the formation of thermokarst ponds. These ponds are hotspots of microbial carbon cycling and greenhouse gas production, and efforts have been put on disentangling the role of bacteria and archaea in recycling the increasing amounts of carbon arriving to the ponds from degrading watersheds. However, despite the well‐established role of fungi in carbon cycling in the terrestrial environments, the interactions between permafrost thaw and fungal communities in Arctic freshwaters have remained unknown. We integrated data from 60 ponds in Arctic hydro‐ecosystems, representing a gradient of permafrost integrity and spanning over five regions, namely Alaska, Greenland, Canada, Sweden, and Western Siberia. The results revealed that differences in pH and organic matter quality and availability were linked to distinct fungal community compositions and that a large fraction of the community represented unknown fungal phyla. Results display a 16%–19% decrease in fungal diversity, assessed by beta diversity, across ponds in landscapes with more degraded permafrost. At the same time, sites with similar carbon quality shared more species, aligning a shift in species composition with the quality and availability of terrestrial dissolved organic matter. We demonstrate that the degradation of permafrost has a strong negative impact on aquatic fungal diversity, likely via interactions with the carbon pool released from ancient deposits. This is expected to have implications for carbon cycling and climate feedback loops in the rapidly warming Arctic. Article in Journal/Newspaper Arctic Climate change Greenland permafrost Thermokarst Alaska Siberia Wiley Online Library Arctic Canada Greenland Global Change Biology 27 22 5889 5906 |
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English |
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Abstract Climate change–driven permafrost thaw has a strong influence on pan‐Arctic regions, via, for example, the formation of thermokarst ponds. These ponds are hotspots of microbial carbon cycling and greenhouse gas production, and efforts have been put on disentangling the role of bacteria and archaea in recycling the increasing amounts of carbon arriving to the ponds from degrading watersheds. However, despite the well‐established role of fungi in carbon cycling in the terrestrial environments, the interactions between permafrost thaw and fungal communities in Arctic freshwaters have remained unknown. We integrated data from 60 ponds in Arctic hydro‐ecosystems, representing a gradient of permafrost integrity and spanning over five regions, namely Alaska, Greenland, Canada, Sweden, and Western Siberia. The results revealed that differences in pH and organic matter quality and availability were linked to distinct fungal community compositions and that a large fraction of the community represented unknown fungal phyla. Results display a 16%–19% decrease in fungal diversity, assessed by beta diversity, across ponds in landscapes with more degraded permafrost. At the same time, sites with similar carbon quality shared more species, aligning a shift in species composition with the quality and availability of terrestrial dissolved organic matter. We demonstrate that the degradation of permafrost has a strong negative impact on aquatic fungal diversity, likely via interactions with the carbon pool released from ancient deposits. This is expected to have implications for carbon cycling and climate feedback loops in the rapidly warming Arctic. |
author2 |
Science for Life Laboratory |
format |
Article in Journal/Newspaper |
author |
Kluge, Mariana Wauthy, Maxime Clemmensen, Karina Engelbrecht Wurzbacher, Christian Hawkes, Jeffrey A. Einarsdottir, Karolina Rautio, Milla Stenlid, Jan Peura, Sari |
spellingShingle |
Kluge, Mariana Wauthy, Maxime Clemmensen, Karina Engelbrecht Wurzbacher, Christian Hawkes, Jeffrey A. Einarsdottir, Karolina Rautio, Milla Stenlid, Jan Peura, Sari Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient |
author_facet |
Kluge, Mariana Wauthy, Maxime Clemmensen, Karina Engelbrecht Wurzbacher, Christian Hawkes, Jeffrey A. Einarsdottir, Karolina Rautio, Milla Stenlid, Jan Peura, Sari |
author_sort |
Kluge, Mariana |
title |
Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient |
title_short |
Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient |
title_full |
Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient |
title_fullStr |
Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient |
title_full_unstemmed |
Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient |
title_sort |
declining fungal diversity in arctic freshwaters along a permafrost thaw gradient |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/gcb.15852 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.15852 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.15852 |
geographic |
Arctic Canada Greenland |
geographic_facet |
Arctic Canada Greenland |
genre |
Arctic Climate change Greenland permafrost Thermokarst Alaska Siberia |
genre_facet |
Arctic Climate change Greenland permafrost Thermokarst Alaska Siberia |
op_source |
Global Change Biology volume 27, issue 22, page 5889-5906 ISSN 1354-1013 1365-2486 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/gcb.15852 |
container_title |
Global Change Biology |
container_volume |
27 |
container_issue |
22 |
container_start_page |
5889 |
op_container_end_page |
5906 |
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1800745227347034112 |