Menu

Javascript is not activated in your browser. This website needs javascript activated to work properly.
You are here

The contribution of CAP greening measures to conservation biological control at two spatial scales

Author:
  • Klaus Birkhofer
  • Valentin Fevrier
  • Anna Eva Heinrich
  • Katharina Rink
  • Henrik G. Smith
Publishing year: 2018-03-01
Language: English
Pages: 84-94
Publication/Series: Agriculture, Ecosystems and Environment
Volume: 255
Document type: Journal article
Publisher: Elsevier

Abstract english

To promote a more sustainable agricultural production, the European Commission implemented direct payments that require farmers to implement greening measures aimed at reducing negative effects of agriculture on the environment and biodiversity. These greening measures (including fallows and permanent grasslands) have been criticised for their potential inability to conserve biodiversity and promote associated ecosystem services. In this study, we investigate if the presence of old or recently established fallows and permanent grassland in the landscape are beneficial for the emergence, activity density and spillover of ground-running natural enemies and as a result aphid biological control in cereal fields. Lycosidae and Theridiidae were more numerous in fallows (emergence & activity density) compared to crop fields, while Staphylinidae and Linyphiidae showed opposite patterns. Spillover of Lycosidae was significantly higher from fallows into cereal fields, than between cereal fields. As a result of the opposite patterns in activity density in fallows between different groups of predators, a spillover from fallows did not result in a significantly higher aphid control in crop fields adjacent to them. A high proportion of permanent grassland in the landscape resulted in lower emergence of Linyphiidae and Carabidae. Our results support the assumption that a higher emergence and activity density of ground-running predators generally results in higher spillover to adjacent fields. However, patterns of emergence and activity density differed between individual natural enemy groups. Fallows, independent of age, can therefore act as source or sink depending on the focal predator group and more permanent grassland in the landscape can result in lower local emergence. Fallows at the local scale and permanent grassland at larger spatial scales therefore did not generally promote aphid biological control services provided by ground-running natural enemies.

Keywords

  • Environmental Sciences
  • Ecology
  • Emergence
  • Fallow
  • Generalist predators
  • Permanent grassland
  • Set-aside
  • Spillover

Other

Published
  • ISSN: 0167-8809
Henrik Smith
E-mail: henrik [dot] smith [at] biol [dot] lu [dot] se

Director

Centre for Environmental and Climate Research (CEC)

+46 46 222 93 79

+46 70 978 20 56

C313

Sölvegatan 37, Lund

50

Professor

Biodiversity

+46 46 222 93 79

+46 70 978 20 56

E-C313

50

Head of department

Centre for Environmental and Climate Research (CEC)

Sölvegatan 37, Lund

50

Coordinator

Lund university sustainability forum

+46 46 222 93 79

+46 70 978 20 56

C 313

Sölvegatan 37, Lund

50

Research group

Biodiversity and Conservation Science

Projects

Doctoral students and postdocs

PhD students, main supervisor

PhD students, assistant supervisor

Postdocs

Downloads & links

Henrik Smith