Microbial community composition unaffected by mycorrhizal plant removal in sub-arctic tundra
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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.
In: Fungal Ecology, Vol. 69, 101342, 2024.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Microbial community composition unaffected by mycorrhizal plant removal in sub-arctic tundra
AU - Kirchhoff, Leah
AU - Gavazov, Konstantin
AU - Blume-Werry, Gesche
AU - Krab, Eveline J.
AU - Lett, Signe
AU - Pedersen, Emily Pickering
AU - Peter, Martina
AU - Pfister, Stephanie
AU - Väisänen, Maria
AU - Monteux, Sylvain
N1 - Publisher Copyright: © 2024 The Authors
PY - 2024
Y1 - 2024
N2 - 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.
AB - 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.
KW - Bacteria
KW - Ectomycorrhizal fungi
KW - Ericoid mycorrhizal fungi
KW - Functional type removal experiment
KW - Heath
KW - Plant-microbial-soil interactions
KW - Tundra vegetation change
U2 - 10.1016/j.funeco.2024.101342
DO - 10.1016/j.funeco.2024.101342
M3 - Journal article
AN - SCOPUS:85187329690
VL - 69
JO - Fungal Ecology
JF - Fungal Ecology
SN - 1754-5048
M1 - 101342
ER -
ID: 385588621