NDLI: Hibernation of predatory arthropods in semi-natural habitats

Content Provider	Springer Nature Link
Author	Geiger, Flavia Wäckers, Felix L. Bianchi, Felix J. J. A.
Copyright Year	2008
Abstract	Non-crop habitats provide important resources for natural enemies. Many natural enemies hibernate in non-crop habitats, from which they may colonise arable fields in the spring. Spring colonisation ensures annual repopulation of the crop with natural enemies, allowing them to keep pace with the development of pest populations. The availability of non-crop habitats can, therefore, be crucial to successful conservation biological control. We quantified the density of overwintering natural enemies near organic Brussels sprout crops in five different non-crop habitats (short grassy field margin, herbaceous field margin, herbaceous field margin under a tree line, ditch and forest). Soil and litter samples of non-crop habitats were taken at two sites. One site was located in an open agricultural landscape, the other in a landscape dominated by mixed forest. Insects belonging to Staphylinidae, Araneae, Carabidae, Coccinellidae and Dermaptera were the most abundant. Mean densities of predatory arthropods were higher in the open agricultural landscape (290 predators m−2) than in the forested landscape (137 predators m−2). Herbaceous habitat types supported the highest densities of overwintering predators (up to 400 predators m−2), whereas densities in the forest were lowest (10 predators m−2). These results indicate that herbaceous non-crop habitats are important refugia for predators and may play a vital role in conservation biological control.
Starting Page	529
Ending Page	535
Page Count	7
File Format	PDF
ISSN	13866141
Journal	BioControl
Volume Number	54
Issue Number	4
e-ISSN	15738248
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-12-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Agroecosystems Predators Conservation biological control Overwintering Non-crop habitat Pest control Behavioural Sciences Animal Biochemistry Animal Ecology Agriculture Plant Pathology Entomology
Content Type	Text
Resource Type	Article
Subject	Insect Science Agronomy and Crop Science

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