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Divergent above- and below-ground responses of fungal functional groups to forest thinning
Joint Research Unit CTFC – AGROTECNIO, Lleida, Spain; Department of Crop and Forest Sciences, University of Lleida, Lleida, Spain .
Swedish Univ Agr Sci, Dept Forest Mycol & Plant Pathol, SE-75007 Uppsala, Sweden..
Joint Research Unit CTFC – AGROTECNIO, Lleida, Spain; Department of Crop and Forest Sciences, University of Lleida, Lleida, Spain .
Örebro University, School of Science and Technology. Joint Research Unit CTFC – AGROTECNIO, Lleida, Spain; Department of Crop and Forest Sciences, University of Lleida, Lleida, Spain; Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway .ORCID iD: 0000-0002-4192-0511
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2020 (English)In: Soil Biology and Biochemistry, ISSN 0038-0717, E-ISSN 1879-3428, Vol. 150, article id 108010Article in journal (Refereed) Published
Abstract [en]

Forest disturbances have a strong effect on soil fungal communities and associated ecosystem processes. However, little is known about the response of mycelial biomass to disturbances, and how fungi reallocate carbon into different fungal structures under environmental stressors. We investigated above- and below-ground fungal biomass shifts in response to different intensities of forest management in Mediterranean Pinus pinaster forests. Soil fungal biomass was estimated by ergosterol quantification and production of sporocarps was estimated from repeated field samplings during 5 years in 26 experimental plots. Abundance of mycorrhizal and saprotrophic fungi belowground was determined using Pacific Biosciences sequencing of fungal ITS2 amplicons. Thinning had a prolonged negative effect belowground, inter- and intra-annually, on total fungal biomass and on the biomass of ectomycorrhizal fungi, but not on saprotrophic fungi. Total and ectomycorrhizal mushroom yields were negatively correlated with the total and the ectomycorrhizal mycelial biomass, respectively. Thinning also correlated positively with the aboveground/belowground ratio of both total and ectomycorrhizal fungal biomass. We show potential short-term shifts in resource allocation of fungi from below-to above-ground structures under disturbances such as forest thinning. Ectomycorrhizal fungi may respond to disturbances by increasing reproduction rather than colonizing the surrounding soil.

Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 150, article id 108010
Keywords [en]
Fungal dynamics, Ectomycorrhizal, Saprotrophic, Ergosterol, High throughput sequencing
National Category
Soil Science
Identifiers
URN: urn:nbn:se:oru:diva-87304DOI: 10.1016/j.soilbio.2020.108010ISI: 000581509300009Scopus ID: 2-s2.0-85091918326OAI: oai:DiVA.org:oru-87304DiVA, id: diva2:1500203
Note

Funding Agencies:

Spanish Ministry of Science, Innovation and Universities RTI 2018-099315-A-I00

Generalitat de Catalunya

Available from: 2020-11-11 Created: 2020-11-11 Last updated: 2020-11-11Bibliographically approved

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Hagenbo, Andreas

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