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Porträtt av Henrik Smith. Foto.

Henrik Smith

Professor

Porträtt av Henrik Smith. Foto.

Crop management affects pollinator attractiveness and visitation in oilseed rape

Författare

  • Sandra A.M. Lindström
  • Björn K. Klatt
  • Henrik G. Smith
  • Riccardo Bommarco

Summary, in English

Ecological intensification of agriculture implies managing ecological processes to improve performance of agricultural systems. However, impacts on relevant ecological functions such as insect pollination from other crop management factors are poorly explored. Pest insects and crop resources such as water availability can directly affect crop yields, but it is unknown if there are indirect effects through effects on insect pollination. With a factorial experiment, we examined how irrigation and control of pollen beetles affected crop attractiveness and pollinator visitation in an open-pollinated spring oilseed rape cultivar. We studied how irrigation and pest control modified the production of flowers and nectar in oilseed rape, and if this in turn affected the flower-visitation of honey bees and bumble bees. Pest control increased the number of oilseed rape flowers by 69%, and the amount of nectar per flower with 36%, but for the latter only in non-irrigated plots. Furthermore, we found higher pollinator densities in plots with reduced pollen beetle densities. Pest control also reduced the number of non-legitimate flower visits, suggesting higher pollination efficiency in plots with reduced pollen beetle densities. We show that crop management affects the value of mass-flowering crops as a resource for pollinating insects. Development of pest control tools that are harmless to pollinators could increase the value of flowering crops as food resources for pollinating insects.

Avdelning/ar

  • Biodiversitet
  • Centrum för miljö- och klimatvetenskap (CEC)
  • BECC: Biodiversity and Ecosystem services in a Changing Climate
  • Biodiversitet och bevarandevetenskap

Publiceringsår

2018-02

Språk

Engelska

Sidor

82-88

Publikation/Tidskrift/Serie

Basic and Applied Ecology

Volym

26

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Environmental Sciences related to Agriculture and Land-use
  • Ecology

Nyckelord

  • Apis mellifera
  • Bombus
  • Brassica napus
  • Crop pollination
  • Irrigation
  • Nectar
  • Pollen beetle
  • Sclerotinia

Status

Published

Forskningsgrupp

  • Biodiversity and Conservation Science

ISBN/ISSN/Övrigt

  • ISSN: 1439-1791