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Community phenology of insects on oak: local differentiation along a climatic gradient

Ekholm, Adam and Faticov, Maria and Tack, Ayco J. M. and Berger, Josef and Stone, Graham N. and Vesterinen, Eero and Roslin, Tomas (2021). Community phenology of insects on oak: local differentiation along a climatic gradient. Ecosphere. 12 , e03785
[Research article]

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Abstract

Climate change is advancing the onset of phenological events, with the rate of advance varying among species and trophic levels. In addition, local populations of the same species may show genetic differences in their response to seasonal cues. If populations of interacting species differ in their response, then climate change may result in geographically varying shifts in the community-level distribution of interaction strength. We explored the magnitude of trophic- and species-level responses to temperature in a tritrophic system comprising pedunculate oak, insect herbivores, and their associated parasitoids. We sampled local realizations of this community at five sites along a transect spanning fifteen degrees of latitude. Samples from each trophic level at each site were exposed to the same set of five climatic regimes during overwintering in climate chambers. We then recorded the number of days and degree-days required for oak acorns to develop and insects to emerge. In terms of dates of events, phenology differed among populations. In terms of degree-days, we found that for two species pairs, the heat sum required to develop in spring differed by an additional similar to 500 degree-days between trophic levels when overwintering at the highest temperature. For three species, within-population variation in the number of degree-days required for emergence was higher at warmer temperatures. Our findings suggest that changing temperatures can modify interactions within a community by altering the relative phenology of interacting species and that some interactions are more vulnerable than others to a shift in temperature. The geographic variation in the phenological response of a species suggests that there is a genetic component in determining the phenology of local populations. Such local variation blended with interspecific differences in responses makes it complex to understand how communities will respond to warmer temperatures.

Authors/Creators:Ekholm, Adam and Faticov, Maria and Tack, Ayco J. M. and Berger, Josef and Stone, Graham N. and Vesterinen, Eero and Roslin, Tomas
Title:Community phenology of insects on oak: local differentiation along a climatic gradient
Series Name/Journal:Ecosphere
Year of publishing :2021
Volume:12
Article number:e03785
Number of Pages:17
Publisher:WILEY
ISSN:2150-8925
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 3.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Climate Research
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:climate change, community ecology, mismatch, phenology
URN:NBN:urn:nbn:se:slu:epsilon-p-114713
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114713
Additional ID:
Type of IDID
DOI10.1002/ecs2.3785
Web of Science (WoS)000723142700045
ID Code:26322
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:16 Dec 2021 09:25
Metadata Last Modified:16 Dec 2021 09:31

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