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Foraging Habitat Preferences of Vespertilionid Bats in Britain
Allyson L. Walsh and Stephen Harris
Journal of Applied Ecology
Vol. 33, No. 3 (Jun., 1996), pp. 508-518
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/2404980
Page Count: 11
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1. The selection of foraging habitats by vespertilionid bats in Britain was quantified using a stratified sample of 1030 1-km squares. 2. Quantitative analysis of habitat preference and avoidance on a large scale indicated that bats were flexible, yet consistent in their habitat use across contrasting landscapes. Habitats associated with broadleaved woodland and water were most preferred, while arable land, moorland and improved grassland were strongly avoided. Linear vegetation features were selected in all landscapes, demonstrating the importance of habitat continuity to bats. The availability of preferred habitats was low and patchy in all landscapes, indicating that bats have specialized habitat requirements. Differences in habitat selection between landscape types and possible factors influencing habitat selection are discussed. 3. Habitat selection analysed on a local scale demonstrated the same consistent preference for woodland, riparian and corridor habitats across 19 discrete land classes. 4. Management policies for bats in Britain should endeavour to preserve and enhance the availability of woodland, water margins and linear corridor habitats. Lack of continuity of the landscape, loss and fragmentation of habitat patches plus deterioration of the quality of such patches may pose a threat to bat populations.
Journal of Applied Ecology © 1996 British Ecological Society