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Spatial variation in plant chemical defence towards herbivores can help us understand variation in herbivore top–down control of shrubs in the Arctic and possibly also shrub responses to global warming. Less defended, non‐resinous shrubs could be more influenced by herbivores than more defended, resinous shrubs. However, sparse field measurements limit our current understanding of how much of the...
Arctic plants and herbivores are subject to ongoing climatic changes that are more rapid and extreme than elsewhere on the planet, and thus it is pivotal to understand the arctic plant-herbivore interactions in a global change context. We examined how infestation by an eriophyoid gall mite affects the circumpolar shrub Salix arctica, and how the effects vary across vegetation types. Specifically,...
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