Microbial community composition unaffected by mycorrhizal plant removal in sub-arctic tundra
Kirchhoff, Leah; Gavazov, Konstantin; Blume-Werry, Gesche; Krab, Eveline J.; Lett, Signe; Pedersen, Emily Pickering; Peter, Martina; Pfister, Stephanie; Väisänen, Maria; Monteux, Sylvain (2024-03-11)
Elsevier
11.03.2024
Leah Kirchhoff, Konstantin Gavazov, Gesche Blume-Werry, Eveline J. Krab, Signe Lett, Emily Pickering Pedersen, Martina Peter, Stephanie Pfister, Maria Väisänen, Sylvain Monteux, Microbial community composition unaffected by mycorrhizal plant removal in sub-arctic tundra, Fungal Ecology, Volume 69, 2024, 101342, ISSN 1754-5048, https://doi.org/10.1016/j.funeco.2024.101342
https://creativecommons.org/licenses/by/4.0/
© 2024 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
https://creativecommons.org/licenses/by/4.0/
© 2024 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
https://creativecommons.org/licenses/by/4.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202404122676
https://urn.fi/URN:NBN:fi:oulu-202404122676
Tiivistelmä
Abstract
Vegetation changes in a warming Arctic may affect plant-associated soil microbial communities with possible consequences for the biogeochemical cycling of carbon (C) and nitrogen (N). In a sub-arctic tundra heath, we factorially removed plant species with ecto- and ericoid mycorrhizal associations. After two years, we explored how mycorrhizal type-specific plant removal influences microbial communities, soil and microbial C and N pools, and extracellular enzymatic activities. Removal of ecto- and ericoid mycorrhizal plants did not change the soil fungal or bacterial community composition or their extracellular enzyme activities. However, ericoid plant removal decreased microbial C:N ratio, suggesting a stoichiometric effect decoupled from microbial community composition. In other words, microbial communities appear to show initial plasticity in response to major changes in tundra vegetation. This highlights the importance of longer-term perspectives when investigating the effects of vegetation changes on biogeochemical processes in Arctic ecosystems.
Vegetation changes in a warming Arctic may affect plant-associated soil microbial communities with possible consequences for the biogeochemical cycling of carbon (C) and nitrogen (N). In a sub-arctic tundra heath, we factorially removed plant species with ecto- and ericoid mycorrhizal associations. After two years, we explored how mycorrhizal type-specific plant removal influences microbial communities, soil and microbial C and N pools, and extracellular enzymatic activities. Removal of ecto- and ericoid mycorrhizal plants did not change the soil fungal or bacterial community composition or their extracellular enzyme activities. However, ericoid plant removal decreased microbial C:N ratio, suggesting a stoichiometric effect decoupled from microbial community composition. In other words, microbial communities appear to show initial plasticity in response to major changes in tundra vegetation. This highlights the importance of longer-term perspectives when investigating the effects of vegetation changes on biogeochemical processes in Arctic ecosystems.
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- Avoin saatavuus [37957]
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