Home About Browse Search
Svenska


Impacts of clear-cutting on soil fungal communities and their activities in boreal forests - A metatranscriptomic approach

Hasby, Fahri (2022). Impacts of clear-cutting on soil fungal communities and their activities in boreal forests - A metatranscriptomic approach. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-897-4
eISBN 978-91-7760-898-1
[Doctoral thesis]

[img] PDF
5MB

Abstract

Large-scale forestry has reduced and fragmented the area of primary forest and greatly impacted communities of organisms, above and below ground. Fungal com-munities, which are pivotal in boreal forest soil functions, are vulnerable to tree har-vesting. Changes in their community composition may be followed by loss of key functions and ultimately affect carbon and nutrient cycling. By using various molec-ular approaches, such as metabarcoding, transcriptomics and metatranscriptomics, this thesis aims to investigate how clear-cut forestry affects the composition and traits of soil fungal communities.
In a shorter time perspective, clear-cutting eliminate ectomycorrhizal fungi but stimulates growth of saprotrophic fungi. Clear-cutting also enhanced cellulose and lignin decomposition, which may reduce soil carbon stocks in the short-term and potentially cause eutrophication in the mid-term. After 35 years, the ectomycorrhizal fungal community composition in re-established secondary forest was still not re-stored to the same composition as in forest with longer continuity, although its bio-mass had recovered. Particularly Cortinarius, a genus with a key functional role in lignin decomposition, was largely missing in secondary forest. Ectomycorrhizal Cortinarius species accounted for a large fraction of gene transcription of ligninolytic peroxidases in forests with long continuity, and loss of this function could impair long-term nitrogen cycling and soil fertility.
Overall, this thesis presents evidence that clear-cutting forestry has extensive ef-fects on fungal biodiversity, with major short-term consequences for soil fungi and their facilitation of decomposition and nutrient cycling, but also long-term effects on ectomycorrhizal communities that should be considered in further evaluation of management practices.

Authors/Creators:Hasby, Fahri
Title:Impacts of clear-cutting on soil fungal communities and their activities in boreal forests - A metatranscriptomic approach
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2022
Number:2022:11
Number of Pages:100
Publisher:Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-897-4
ISBN for electronic version:978-91-7760-898-1
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:forestry, soil fungi, metabarcoding, transcriptomics, metatranscriptom-ics, decomposition, carbon-use efficiency, ectomycorrhiza, Cortinarius
URN:NBN:urn:nbn:se:slu:epsilon-p-115772
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-115772
ID Code:26829
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:26 Jan 2022 13:25
Metadata Last Modified:26 Jan 2022 13:31

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits