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dc.contributor.authorPiper, Frida I.en_NZ
dc.contributor.authorAltmann, Scott H.en_NZ
dc.contributor.authorLusk, Christopher H.en_NZ
dc.date.accessioned2018-04-11T23:55:16Z
dc.date.available2018en_NZ
dc.date.available2018-04-11T23:55:16Z
dc.date.issued2018en_NZ
dc.identifier.citationPiper, F. I., Altmann, S. H., & Lusk, C. H. (2018). Global patterns of insect herbivory in gap and understorey environments, and their implications for woody plant carbon storage. Oikos, 127(4), 483–496. https://doi.org/10.1111/oik.04686en
dc.identifier.issn0030-1299en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/11769
dc.description.abstractInsect herbivory is thought to favour carbon allocation to storage in juveniles of shade-tolerant trees. This argument assumes that insect herbivory in the understorey is sufficiently intense as to select for storage; however, understoreys might be less attractive to insect herbivores than canopy gaps, because of low resource availability and - at temperate latitudes - low temperatures. Although empirical studies show that shade-tolerant species in tropical forests do allocate more photosynthate to storage than their light-demanding associates, the same pattern has not been consistently observed in temperate forests. Does this reflect a latitudinal trend in the relative activity of insect herbivory in gap versus understorey environments? To date there has been no global review of the effect of light environment on insect herbivory in forests. We postulated that if temperature is the primary factor limiting insect herbivory, the effect of gaps on rates of insect herbivory should be more evident in temperate than in tropical forests; due to low growing season temperatures in the oceanic temperate forests of the Southern Hemisphere, the effect of gaps on insect herbivory rates should in turn be stronger there than in the more continental temperate climates of the Northern Hemisphere. We examined global patterns of insect herbivory in gaps versus understories through meta-analysis of 87 conspecific comparisons of leaf damage in contrasting light environments. Overall, insect herbivory in gaps was significantly higher than in the understorey; insect herbivory was 50% higher in gaps than in understoreys of tropical forests but did not differ significantly between gaps and understories in temperate forests of either hemisphere. Results are consistent with the idea that low resource availability - and not temperature - limits insect herbivore activity in forest understoreys, especially in the tropics, and suggest the selective influence of insect herbivory on late-successional tree species may have been over-estimated.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherWileyen_NZ
dc.rights© 2017 The Authors.
dc.subjectshade toleranceen_NZ
dc.subjectherbivory toleranceen_NZ
dc.subjectmeta-analysisen_NZ
dc.subjectforest dynamicsen_NZ
dc.subjectlatitudinal gradienten_NZ
dc.titleGlobal patterns of insect herbivory in gap and understorey environments, and their implications for woody plant carbon storageen_NZ
dc.typeJournal Article
dc.identifier.doi10.1111/oik.04686en_NZ
dc.relation.isPartOfOikosen_NZ
pubs.begin-page483
pubs.elements-id218368
pubs.end-page496
pubs.issue4
pubs.publisher-urlhttp://onlinelibrary.wiley.com/doi/10.1111/oik.04686/abstracten_NZ
pubs.volume127
dc.identifier.eissn1600-0706en_NZ


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