Document Detail

Mechanisms underpinning climatic impacts on natural populations: altered species interactions are more important than direct effects.
MedLine Citation:
PMID:  24677405     Owner:  NLM     Status:  Publisher    
Shifts in species' distribution and abundance in response to climate change have been well documented, but the underpinning processes are still poorly understood. We present the results of a systematic literature review and meta-analysis investigating the frequency and importance of different mechanisms by which climate has impacted natural populations. Most studies were from temperate latitudes of North America and Europe; almost half investigated bird populations. We found significantly greater support for indirect, biotic mechanisms than direct, abiotic mechanisms as mediators of the impact of climate on populations. In addition, biotic effects tended to have greater support than abiotic factors in studies of species from higher trophic levels. For primary consumers, the impact of climate was equally mediated by biotic and abiotic mechanisms, whereas for higher level consumers the mechanisms were most frequently biotic, such as predation or food availability. Biotic mechanisms were more frequently supported in studies that reported a directional trend in climate than in studies with no such climatic change, although sample sizes for this comparison were small. We call for more mechanistic studies of climate change impacts on populations, particularly in tropical systems.
Nancy Ockendon; David J Baker; Jamie A Carr; Elizabeth C White; Rosamunde E A Almond; Tatsuya Amano; Esther Bertram; Richard B Bradbury; Cassie Bradley; Stuart H M Butchart; Nathalie Doswald; Wendy Foden; David J C Gill; Rhys E Green; William J Sutherland; Edmund V J Tanner; James W Pearce-Higgins
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-3-28
Journal Detail:
Title:  Global change biology     Volume:  -     ISSN:  1365-2486     ISO Abbreviation:  Glob Chang Biol     Publication Date:  2014 Mar 
Date Detail:
Created Date:  2014-3-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9888746     Medline TA:  Glob Chang Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2014 John Wiley & Sons Ltd.
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