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The representation and functional composition of carabid and staphylinid beetles in different field boundary types at a farm-scale

Griffiths, G.J.K. and Winder, Linton H. and Holland, J.M. and Thomas, C.F.G. and Williams, E.R. (2007) The representation and functional composition of carabid and staphylinid beetles in different field boundary types at a farm-scale. Biological Conservation, 135 (1). pp. 145-152. ISSN 0006-3207

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Abstract

At the farm-scale, hedgerow, degraded hedgerow and fence field boundary types were sampled for overwintering carabid and staphylinid beetles. Distinct beetle assemblages were evident and the structural and botanical characteristics of the boundary types were good explanatory factors of the differences. Each field boundary type supported unique species not found elsewhere; nine species were contributed by hedgerows alone and six species each from degraded hedgerows and fences. Using a systematic complementary site selection method we determined that all field boundary types were of equal importance for full representation of carabid and staphylinid species at the farm-scale. Additionally, fence habitats supported generalist predators of crop pests in greatest densities, whilst degraded hedgerows were most valuable in providing refuge to species vulnerable to disturbance and habitat fragmentation. Contrary to expectation, woodland species were not more evident in hedgerows than either degraded boundaries or fence habitat. This study provides empirical evidence that some components of biodiversity and sustainable farming are best maintained by retaining habitat heterogeneity, including features currently considered of limited conservation value.

Item Type: Journal Article
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science, Technology and Environment (FSTE)
Depositing User: Ms Mereoni Camailakeba
Date Deposited: 11 Nov 2007 11:42
Last Modified: 24 May 2012 19:57
URI: http://repository.usp.ac.fj/id/eprint/704
UNSPECIFIED

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