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Pre-commercial thinning in Norway spruce-birch mixed stands can provide abundant forage for ungulates without losing volume production

Ara, Mostarin and Felton, Annika and Holmström, Emma and Petersson, Lisa and Berglund, Mattias and Johansson, Ulf and Nilsson, Urban (2022). Pre-commercial thinning in Norway spruce-birch mixed stands can provide abundant forage for ungulates without losing volume production. Forest Ecology and Management. 520 , 120364
[Research article]

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Abstract

Mixed stands of Norway spruce and birch have the potential to simultaneously produce timber and provide large ungulates with a significant amount of forage during the regeneration phase. While the growth and yield of such mixtures are well studied, little is known about potential trade-offs between timber and forage production and which management techniques are suitable for meeting both goals. In this study, four different pre-commercial thinning (PCT) strategies were used to study the trade-offs between production and available forage for free-ranging ungulates in a Norway spruce-birch mixture. The four PCT strategies were: 1) retaining 2000 birch stems ha(-1) with 2000 Norway spruce ha(-1), 2) removing all birches within a 0.75 m radius around Norway spruce stems, 3) removing all birches and other broadleaves, and 4) no PCT (control). Growth of Norway spruce was higher in the 2000 birch ha(-1) and full removal treatments compared to the untreated control, but these two treatments did not differ from one another in volume production of Norway spruce. We found a negative effect of PCT on forage availability but no effect on ungulate browsing. Therefore, PCT strategies that provide both sufficient birch forage and maximize volume production of Norway spruce can be implemented.

Authors/Creators:Ara, Mostarin and Felton, Annika and Holmström, Emma and Petersson, Lisa and Berglund, Mattias and Johansson, Ulf and Nilsson, Urban
Title:Pre-commercial thinning in Norway spruce-birch mixed stands can provide abundant forage for ungulates without losing volume production
Series Name/Journal:Forest Ecology and Management
Year of publishing :2022
Volume:520
Article number:120364
Number of Pages:9
Publisher:ELSEVIER
ISSN:0378-1127
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:Birch, Forage, Mixed stand, Norway spruce, Ungulates
URN:NBN:urn:nbn:se:slu:epsilon-p-118693
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-118693
Additional ID:
Type of IDID
DOI10.1016/j.foreco.2022.120364
Web of Science (WoS)000832827500006
ID Code:28741
Faculty:S - Faculty of Forest Sciences
Department:(S) > Southern Swedish Forest Research Centre
(S) > Unit for Field-based Forest Research
Deposited By: SLUpub Connector
Deposited On:02 Sep 2022 08:27
Metadata Last Modified:02 Sep 2022 08:31

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