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Björs, Marcus, 2022. The role of common mycorrhizal networks for forest regeneration near clear-cut edges : implications for management. First cycle, G2E. Umeå: SLU, Dept. of Forest Ecology and Management



Poor regeneration close to edges on clear-cuts and around seed trees in the Swedish boreal zone is well-known to foresters. With an intensifying national and European discussion concerning forestry, the prominence of edge effects is likely to increase. However, little is known of the drivers behind these edge effects. Recent developments in the research surrounding ectomycorrhizal fungi and their ability to form common mycorrhizal networks may be able to explain some of these patterns. In this study, I have analysed growth data of Scots pine seedlings planted in a Chequered-Gap-Shelterwood-System trial located in Jämtland, Sweden. I found that growth is significantly higher in the centre of a clear-cut gap than in the edge zone, defined as within five metres from the clear-cut edge. Which side of the gap the plants were exposed to was also partially significant. The results correlate well with the expected outcomes of below-ground competition described in literature. These edge effects may have long term implications for management due to lower growth, but the usage of new management methods may bring positive social benefits.

Main title:The role of common mycorrhizal networks for forest regeneration near clear-cut edges
Subtitle:implications for management
Authors:Björs, Marcus
Supervisor:Henriksson, Nils
Examiner:Lind, Torgny
Series:Kandidatarbeten i skogsvetenskap / SLU, Fakulteten för skogsvetenskap
Volume/Sequential designation:2022:14
Year of Publication:2022
Level and depth descriptor:First cycle, G2E
Student's programme affiliation:SY001 Forest Science - Master's Programme 300 HEC
Supervising department:(S) > Dept. of Forest Ecology and Management
Keywords:Ectomycorrhizal fungi, Common mycorrhizal network, Regeneration, Boreal, Scots pine
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Subject. Use of subject categories until 2023-04-30.:Forestry production
Deposited On:08 Jul 2022 10:15
Metadata Last Modified:08 Jul 2022 10:38

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