Field scale organic farming does not counteract landscape effects on butterfly trait composition

Research output: Contribution to journalArticle

Abstract

We tested how dispersal capacity, host plant specificity and reproductive rate influenced the effects of farming system and landscape composition on butterfly species richness and abundance. In no case did variation in these traits explain species responses to organic farming, indicating that all species benefit equally. In contrast, butterflies with high mobility and reproductive rate were disproportionally more abundant in landscapes dominated by arable land, and the species richness of butterflies with low mobility tended to decrease with increasing proportion of arable land whereas those of high mobility remained fairly constant. Hence, although organic farming increased biodiversity, it did not counteract landscape effects on butterfly trait composition. As a trait dependent loss of biodiversity may result in a larger decline of functional trait diversity compared to species diversity, these results imply that organic farming may not increase or restore functional agro-ecosystem diversity. Information provided by species traits, rather than biodiversity per se, may provide important information for successful revisions of future agri-environment schemes.

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Ecology
  • Earth and Related Environmental Sciences

Keywords

  • Agri-environment schemes, Farmland biodiversity, Farming system, Species traits, Time since transition
Original languageEnglish
Pages (from-to)66-71
JournalAgriculture, Ecosystems & Environment
Volume158
Publication statusPublished - 2012
Publication categoryResearch
Peer-reviewedYes