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Summer and winter browsing affect conifer growth differently: An experimental study in a multi-species ungulate community

Pfeffer, Sabine and Singh, Navinder and Cromsigt, Joris and Widemo, Fredrik (2021). Summer and winter browsing affect conifer growth differently: An experimental study in a multi-species ungulate community. Forest Ecology and Management. 494 , 119314
[Research article]

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Abstract

Ungulate browsing has been studied for several decades in the northern hemisphere. However, studies have mainly focused on just one or two ungulate species, while rarely contrasting the relative effects of summer and winter browsing. This limits our understanding of the dynamics and effects of browsing in landscapes where ungulate species diversity is increasing. We conducted a seasonal exclosure experiment on former clear-cuts in a multi-species ungulate system in Sweden, to investigate the relative impacts of summer and winter browsing on the conifers Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) at the tree species level. We tested for differences in individual conifer growth and demographic responses between Summer browsing, Winter browsing, No browsing, and Control treatment plots over a 4.5 year experimental period. We defined the demographic response as the distribution of conifers among different height classes. Individual growth rates and demographic responses of both conifer species were similar in the plots with No browsing (year-round exclosures) as in the Control plots with year-round browsing. Plots subject to Summer and Winter browsing differed in terms of their demographic response relative to plots with No browsing and Control plots; more stems reached taller height classes in the Summer and Winter browsing plots with slight differences between the conifer species. We discuss the different responses of Scots pine and Norway spruce considering their differences in palatability and their ability to tolerate plant-plant competition in a multi-species ungulate system, in light of potential associational effects. If fencing is intended to be used as a management practice to mitigate the impacts of deer browsing on conifer growth, our results suggest that a total exclusion of deer does not necessarily enhance conifer growth during the first years of regeneration.

Authors/Creators:Pfeffer, Sabine and Singh, Navinder and Cromsigt, Joris and Widemo, Fredrik
Title:Summer and winter browsing affect conifer growth differently: An experimental study in a multi-species ungulate community
Series Name/Journal:Forest Ecology and Management
Year of publishing :2021
Volume:494
Article number:119314
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:Cervidae, Clear-cut, Even-aged forest management, Exclosure experiment, Picea abies, Pinus sylvestris
URN:NBN:urn:nbn:se:slu:epsilon-p-112587
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112587
Additional ID:
Type of IDID
DOI10.1016/j.foreco.2021.119314
Web of Science (WoS)000657598600005
ID Code:24756
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Wildlife, Fish and Environmental Studies
Deposited By: SLUpub Connector
Deposited On:29 Jun 2021 14:25
Metadata Last Modified:29 Jun 2021 14:31

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