Report

Landscape Structure and Biological Control in Agroecosystems

Science  06 Aug 1999:
Vol. 285, Issue 5429, pp. 893-895
DOI: 10.1126/science.285.5429.893

You are currently viewing the abstract.

View Full Text

Via your Institution

Log in through your institution

Log in through your institution


Abstract

Biological pest control has primarily relied on local improvements in populations of natural enemies, but landscape structure may also be important. This is shown here with experiments at different spatial scales using the rape pollen beetle (Meligethes aeneus), an important pest on oilseed rape (Brassica napus). The presence of old field margin strips along rape fields was associated with increased mortality of pollen beetles resulting from parasitism 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.

  • * To whom correspondence should be addressed. E-mail: c.thies{at}uaoe.gwdg.de

View Full Text

Cited By...