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Species richness changes lag behind climate change

By Rosa Menéndez, Adela González Megías, Jane K Hill, Brigitte Braschler, Stephen G Willis, Yvonne Collingham, Richard Fox, David B Roy and Chris D Thomas

Abstract

Species-energy theory indicates that recent climate warming should have driven increases in species richness in cool and species-poor parts of the Northern Hemisphere. We confirm that the average species richness of British butterflies has increased since 1970–82, but much more slowly than predicted from changes of climate: on average, only one-third of the predicted increase has taken place. The resultant species assemblages are increasingly dominated by generalist species that were able to respond quickly. The time lag is confirmed by the successful introduction of many species to climatically suitable areas beyond their ranges. Our results imply that it may be decades or centuries before the species richness and composition of biological communities adjusts to the current climate

Topics: Research Article
Publisher: The Royal Society
OAI identifier: oai:pubmedcentral.nih.gov:1560312
Provided by: PubMed Central
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