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Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Resistance of subarctic soil fungal and invertebrate communities to disruption of below‐ground carbon supply
Author(s): Parker, Thomas C
Chomel, Mathilde
Clemmensen, Karina E
Friggens, Nina L
Hartley, Iain P
Johnson, David
Kater, Ilona
Krab, Eveline J
Lindahl, Björn D
Street, Lorna E
Subke, Jens‐Arne
Wookey, Philip A
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Keywords: canopy disturbance
mycorrhizal fungi
Plant–soil (below-ground) interactions
soil fauna
Issue Date: Dec-2022
Date Deposited: 5-Jan-2023
Citation: Parker TC, Chomel M, Clemmensen KE, Friggens NL, Hartley IP, Johnson D, Kater I, Krab EJ, Lindahl BD, Street LE, Subke J & Wookey PA (2022) Resistance of subarctic soil fungal and invertebrate communities to disruption of below‐ground carbon supply. <i>Journal of Ecology</i>, 110 (12), pp. 2883-2897.
Abstract: The supply of recent photosynthate from plants to soils is thought to be a critical mechanism regulating the activity and diversity of soil biota. In the Arctic, large-scale vegetation transitions are underway in response to warming, and there is an urgent need to understand how these changes affect soil biodiversity and function. We investigated how abundance and diversity of soil fungi and invertebrates responded to a reduction in fresh below-ground photosynthate supply in treeline birch and willow, achieved using stem girdling. We hypothesised that birch forest would support greater abundance of ectomycorrhizal (ECM) fungal species and fauna than willow shrubs, and that girdling would result in a rapid switch from ECM fungi to saprotrophs as canopy supply of C was cut, with a concomitant decline in soil fauna. Birch forest had greater fungal and faunal abundance with a large contribution of root-associated ascomycetes (ericoid mycorrhizal fungi and root endophytes) compared to willow shrub plots, which had a higher proportion of saprotrophs and, contrary to our expectations, ECM fungi. Broad-scale soil fungal and faunal functional group composition was not significantly changed by girdling, even in the third year of treatment. Within the ECM community, there were some changes, with genera that are believed to be particularly C-demanding declining in girdled plots. However, it was notable how most ECM fungi remained present after 3 years of isolation of the below-ground compartment from contemporary photosynthate supply. Synthesis. In a treeline/tundra ecosystem, distinct soil communities existed in contrasting vegetation patches within the landscape, but the structure of these communities was resistant to canopy disturbance and concomitant reduction of autotrophic C inputs.
DOI Link: 10.1111/1365-2745.13994
Rights: © 2022 The Authors. Journal of Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society. This is an open access article under the terms of the Creative Commons Attribution License (, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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