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Poleward shifts in geographical ranges of butterfly species associated with regionalwarming
University of Austin.
Uppsala Universitet. (Biologi)
Catalan Butterfly Monitoring Scheme.
University of Durham.
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1999 (English)In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 399, no 6736, p. 579-583Article in journal (Refereed) Published
Abstract [en]

Mean global temperatures have risen this century, and further warming is predicted to continue for the next 50–100 years. Some migratory species can respond rapidly to yearly climate variation by altering the timing or destination of migration, but most wildlife is sedentary and so is incapable of such a rapid response. For these species, responses to the warming trend should be slower, reflected in poleward shifts of the range. Such changes in distribution would occur at the level of the population, stemming not from changes in the pattern of individuals' movements, but from changes in the ratios of extinctions to colonizations at the northern and southern boundaries of the range. A northward range shift therefore occurs when there is net extinction at the southern boundary or net colonization at the northern boundary. However, previous evidence has been limited to a single species or to only a portion of the species' range. Here we provide the first large-scale evidence of poleward shifts in entire species' ranges. In a sample of 35 non-migratory European butterflies, 63% have ranges that have shifted to the north by 35–240 km during this century, and only 3% have shifted to the south.

Place, publisher, year, edition, pages
1999. Vol. 399, no 6736, p. 579-583
National Category
Natural Sciences
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URN: urn:nbn:se:hig:diva-10169DOI: 10.1038/21181OAI: oai:DiVA.org:hig-10169DiVA, id: diva2:442377
Available from: 2011-09-21 Created: 2011-09-21 Last updated: 2018-03-13Bibliographically approved

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Ryrholm, Nils

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