Sustainable pest regulation in agricultural landscapes: a review on landscape composition, biodiversity and natural pest control

F.J.J.A. Bianchi, C.J.H. Booij, T. Tscharntke

Research output: Contribution to journalArticleAcademicpeer-review

993 Citations (Scopus)

Abstract

Agricultural intensification has resulted in a simplification of agricultural landscapes by the expansion of agricultural land, enlargement of field size and removal of non-crop habitat. These changes are considered to be an important cause of the rapid decline in farmland biodiversity, with the remaining biodiversity concentrated in field edges and non-crop habitats. The simplification of landscape composition and the decline of biodiversity may affect the functioning of natural pest control because non-crop habitats provide requisites for a broad spectrum of natural enemies, and the exchange of natural enemies between crop and non-crop habitats is likely to be diminished in landscapes dominated by arable cropland. In this review, we test the hypothesis that natural pest control is enhanced in complex patchy landscapes with a high proportion of non-crop habitats as compared to simple large-scale landscapes with little associated non-crop habitat. In 74% and 45% of the studies reviewed, respectively, natural enemy populations were higher and pest pressure lower in complex landscapes versus simple landscapes. Landscape-driven pest suppression may result in lower crop injury, although this has rarely been documented. Enhanced natural enemy activity was associated with herbaceous habitats in 80% of the cases (e.g. fallows, field margins), and somewhat less often with wooded habitats (71%) and landscape patchiness (70%). The similar contributions of these landscape factors suggest that all are equally important in enhancing natural enemy populations. We conclude that diversified landscapes hold most potential for the conservation of biodiversity and sustaining the pest control function.
Original languageEnglish
Pages (from-to)1715-1727
JournalProceedings of the Royal Society. B: Biological Sciences
Volume273
Issue number1595
DOIs
Publication statusPublished - 2006

Keywords

  • enhance biological-control
  • terebrans hymenoptera-ichneumonidae
  • farming practice influence
  • agri-environment schemes
  • predator-prey ratios
  • trap-nesting bees
  • coccinella-septempunctata
  • species richness
  • habitat management
  • aphid predation

Fingerprint Dive into the research topics of 'Sustainable pest regulation in agricultural landscapes: a review on landscape composition, biodiversity and natural pest control'. Together they form a unique fingerprint.

Cite this