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The effect of willow diversity on insect herbivory and predation

Kollberg, Ida and Weih, Martin and Glynn, Carolyn (2021). The effect of willow diversity on insect herbivory and predation. Agricultural and Forest Entomology. 24 :1 , 27-39
[Research article]

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The relationship between plant diversity and ecosystems functions such as regulation of insect herbivory is complex and context-dependent. The empirical data necessary to account for these interactions are scarce. Our objective is to test the top-down effects of predation and bottom-up effects of plant traits to understand what drives patterns of herbivory in managed systems. We established single- and multiple-variety willow field plots with up to four varieties, to study herbivory and predation, and greenhouse experiments to investigate the effects on insect preference and performance. Herbivore damage in the field was higher in single- as opposed to multiple-variety plots for the two most prevalent insect types in one of the 3 years. Predation was higher in multiple-variety plots than in pure plots during 2016 but the opposite occurred in 2018. Predation on leaf beetle eggs was higher in multiple-variety plots, but the result was related to specific variety mixtures rather than increased numbers of varieties. Leaf beetle feeding choice and egg-laying were influenced to some extent by plant diversity. Our results give insights into the links between plant diversity, composition and levels of herbivore damage. They also spark questions about how temporal aspects influence these links.

Authors/Creators:Kollberg, Ida and Weih, Martin and Glynn, Carolyn
Title:The effect of willow diversity on insect herbivory and predation
Series Name/Journal:Agricultural and Forest Entomology
Year of publishing :2021
Page range:27-39
Number of Pages:13
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 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Intraspecific variation, perennial plants, Phratora vulgatissima, plant mixtures, plant-insect interactions, Salix, willow
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Additional ID:
Type of IDID
Web of Science (WoS)000684247600001
ID Code:26740
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Crop Production Ecology
Deposited By: SLUpub Connector
Deposited On:17 Jan 2022 13:25
Metadata Last Modified:17 Jan 2022 13:31

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