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Creation of `Island' Habitats in Farmland to Manipulate Populations of Beneficial Arthropods: Predator Densities and Species Composition
M. B. Thomas, S. D. Wratten and N. W. Sotherton
Journal of Applied Ecology
Vol. 29, No. 2 (1992), pp. 524-531
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/2404521
Page Count: 8
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1. Data are presented from a 3-year study on the creation of grass overwintering habitats for the arthropods which are the natural enemies of cereal aphids. 2. During the course of the study, densities of individual predatory species varied considerably, with Araneae and Carabidae showing successional changes from pioneer to more specialized species as the newly created habitats matured. 3. The role of such a habitat creation scheme in increased stability and enhanced biocontrol within the agro-ecosystem is discussed.
Journal of Applied Ecology © 1992 British Ecological Society