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Plant Mediated Interactions: Lower Sawfly Survival on Pines Previously Browsed by Moose

Nordkvist, Michelle and Björkman, Christer and Klapwijk, Maartje (2021). Plant Mediated Interactions: Lower Sawfly Survival on Pines Previously Browsed by Moose. Frontiers in Ecology and Evolution. 9 , 666069
[Research article]

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Insect herbivore performance and arthropod communities can be affected by mammalian grazing and browsing via altered plant communities and vegetation structure. Far less is known about whether changes to plant architecture can cause similar effects. Browsing generated changes to within plant architecture could potentially have large consequences for arthropod communities, herbivore survival and eventually damage to plants. This study investigates plant-mediated effects of ungulate browsing on arthropod predator communities and on the survival of herbivorous insects. More specifically we studied how different levels of ungulate browsing (1) influenced the arthropod predator community on Scots pine (Pinus sylvestris) and (2) affected the survival of the European pine sawfly (Neodiprion sertifer). We related these response variables to browsing-inflicted changes in pine architecture. An observational study of generalist arthropod predators on pine trees revealed a trend toward a quadratic response of ants to browsing intensity-i.e., a higher abundance of ants on moderately browsed trees and lower abundance on intensively browsed trees. A field survey of sawfly larvae revealed a 19% lower larval survival on browsed compared to un-browsed pines, but no difference in survival comparing pines with moderate and high intensity of browsing. A structural equation model revealed that moose generated changes to pine architecture had only a small effect on sawfly larval survival, suggesting additional mediating pine traits affected by browsing. We conclude that insect survival can be altered by ungulate browsing, which could affect damage levels.

Authors/Creators:Nordkvist, Michelle and Björkman, Christer and Klapwijk, Maartje
Title:Plant Mediated Interactions: Lower Sawfly Survival on Pines Previously Browsed by Moose
Series Name/Journal:Frontiers in Ecology and Evolution
Year of publishing :2021
Article number:666069
Number of Pages:10
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
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:trait-mediated effects, indirect interactions, neodiprion sertifer, plant architecture, alces alces, herbivory
Permanent URL:
Additional ID:
Type of IDID
Web of Science (WoS)000648444900001
ID Code:24199
Faculty:S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:31 May 2021 08:43
Metadata Last Modified:31 May 2021 08:51

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