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Distribution of occupied and vacant sites and migration of Lopinga achine (Nymphalidae: Satyrinae) in a fragmented landscape
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Ecology .
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Ecology .
2001 (English)In: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 102, no 2, 183-190 p.Article in journal (Refereed) Published
Abstract [en]

The distribution of occupied and vacant sites and migration of the threatened butterfly Lopinga achine were studied in the province of ╓sterg÷tland, Sweden. The probability of occupation increased with increasing patch area and decreasing distance to the nearest occupied patch, presumably due to different probabilities of colonisation and survival of the populations inhabiting the patches. Probability of female emigration from and immigration to a patch increased with decreasing area. Middle-sized patches produced the largest number of female migrants, although the highest fraction was noted for the smallest patches, and the greatest number of females was marked in the largest patch. The fraction of resident females, but not males, increased with increasing area. The observed occupancy and migration pattern have important conservation implications: all but two populations comprising three or more individuals were within 740 m of the nearest neighbour, indicating the need for networks of suitable, closely situated patches. ⌐ 2001 Elsevier Science Ltd. All rights reserved.

Place, publisher, year, edition, pages
2001. Vol. 102, no 2, 183-190 p.
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Natural Sciences
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URN: urn:nbn:se:liu:diva-42459DOI: 10.1016/S0006-3207(01)00081-7Local ID: 64705OAI: oai:DiVA.org:liu-42459DiVA: diva2:263316
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13

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Bergman, Karl-OlofLandin, Jan

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