Landscape structure and biological control in agroecosystems

Citation
C. Thies et T. Tscharntke, Landscape structure and biological control in agroecosystems, SCIENCE, 285(5429), 1999, pp. 893-895
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Multidisciplinary,Multidisciplinary,Multidisciplinary
Journal title
SCIENCE
ISSN journal
0036-8075 → ACNP
Volume
285
Issue
5429
Year of publication
1999
Pages
893 - 895
Database
ISI
SICI code
0036-8075(19990806)285:5429<893:LSABCI>2.0.ZU;2-F
Abstract
Biological pest control has primarily relied on local improvements in popul ations of natural enemies, but landscape structure may also be important. T his is shown here with experiments at different spatial scales using the ra pe pollen beetle (Meligethes aeneus), an important pest on oilseed rape (Br assica napus). The presence of old field margin strips along rape fields wa s associated with increased mortality of pollen beetles resulting from para sitism and adjacent, Large, old fallow habitats had an even greater effect. In structurally complex Landscapes, parasitism was higher and crop damage was lower than in simple Landscapes with a high percentage of agricultural use.