Climatic severity and the response to temperature elevation of Arctic aphids

Strathdee, A.T.; Bale, J.S.; Strathdee, F.C.; Block, W.C.; Coulson, S.J.; Webb, N.R.; Hodkinson, I. D.. 1995 Climatic severity and the response to temperature elevation of Arctic aphids. Global Change Biology, 1 (1). 23-28.

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1  Theory suggests that any given rise in temperature resulting from climate change will have its greatest effect on high Arctic ecosystems where growing seasons are short and temperatures low. 2  A small temperature rise, similar to that predicted for the middle of the next century, has profound effects on a population of the high Arctic, Dryas-feeding aphid Acyrthosiphon svalbardicum on Spitsbergen (Strathdee et al. 1993a). 3  Here comparative experiments on a closely related Dryas-feeding species, A. brevicorne, at two contrasting sub-Arctic sites are described. Together with the results from Spitsbergen these sites represent two colder sites (high Arctic and upland sub-Arctic) and one warmer site (lowland sub-Arctic). 4  Differential responses in aphid population density and overwintering egg production to temperature elevation support the hypothesis that the ecological effects are greatest at sites with the most severe climates; however, there is no similar gradient in advancement of host plant phenology with warming.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: BAS Programmes > Pre 2000 programme
ISSN: 1354-1013
Additional Keywords: altitude, aphid, Arctic, climate change, latitude, temperature
Date made live: 16 Jan 2017 13:00 +0 (UTC)

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