The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here:

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Portrait of Henrik Smith. Photo.

Henrik Smith


Portrait of Henrik Smith. Photo.

Pollinator communities in strawberry crops - variation at multiple spatial scales.


  • E J Ahrenfeldt
  • Björn Klatt
  • J Arildsen
  • N Trandem
  • Georg Andersson
  • T Tscharntke
  • Henrik Smith
  • L Sigsgaard

Summary, in English

Predicting potential pollination services of wild bees in crops requires knowledge of their spatial distribution within fields. Field margins can serve as nesting and foraging habitats for wild bees and can be a source of pollinators. Regional differences in pollinator community composition may affect this spill-over of bees. We studied how regional and local differences affect the spatial distribution of wild bee species richness, activity-density and body size in crop fields. We sampled bees both from the field centre and at two different types of semi-natural field margins, grass strips and hedges, in 12 strawberry fields. The fields were distributed over four regions in Northern Europe, representing an almost 1100 km long north-south gradient. Even over this gradient, daytime temperatures during sampling did not differ significantly between regions and did therefore probably not impact bee activity. Bee species richness was higher in field margins compared with field centres independent of field size. However, there was no difference between centre and margin in body-size or activity-density. In contrast, bee activity-density increased towards the southern regions, whereas the mean body size increased towards the north. In conclusion, our study revealed a general pattern across European regions of bee diversity, but not activity-density, declining towards the field interior which suggests that the benefits of functional diversity of pollinators may be difficult to achieve through spill-over effects from margins to crop. We also identified dissimilar regional patterns in bee diversity and activity-density, which should be taken into account in conservation management.


  • Centre for Environmental and Climate Science (CEC)
  • Biodiversity
  • BECC: Biodiversity and Ecosystem services in a Changing Climate

Publishing year







Bulletin of Entomological Research





Document type

Journal article


Cambridge University Press


  • Earth and Related Environmental Sciences
  • Ecology




  • ISSN: 1475-2670