Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Porträtt av Henrik Smith. Foto.

Henrik Smith

Professor

Porträtt av Henrik Smith. Foto.

The effect of pasture on starling (Sturnus vulgaris) breeding success and population density in a heterogenous agricultrual landscape in Southern Sweden

Författare

  • Henrik G. Smith
  • Måns Bruun

Summary, in English

Populations of European starlings have declined over large parts of northern and western Europe during the last 20 years. It has been suggested that reduced availability of pasture in the agricultural landscape was one reason for this decline. To investigate this, breeding colonies for starlings were established in southern Sweden, in agricultural landscapes with different availabilities of pasture. Agricultural land-use was classified in a circular area of 500 m around each colony. Production of young per nest was positively related to the availability of pasture close to the breeding colony, not because the availability of pasture affected clutch size or hatchability of eggs, but because nestling survival was higher in colonies surrounded by pasture. The growth rate of an offspring feather character, but not offspring final mass or tarsus length, tended to be related to the availability of pasture. When availability of pasture was low, the variability of breeding success between years was high. Breeding density was also positively related to the availability of pasture near colonies. The combined trends in reproductive success and breeding density in this study support the contention that the reduction of pasture in modern agricultural landscape may be one reason why starling population size has declined.

Avdelning/ar

  • Centrum för miljö- och klimatvetenskap (CEC)
  • Biodiversitet
  • Biologiska institutionen
  • Biodiversitet och bevarandevetenskap

Publiceringsår

2002

Språk

Engelska

Sidor

107-114

Publikation/Tidskrift/Serie

Agriculture, Ecosystems & Environment

Volym

92

Issue

1

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

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

Nyckelord

  • Agricultural land-use
  • Breeding density

Status

Published

Forskningsgrupp

  • Biodiversity and Conservation Science

ISBN/ISSN/Övrigt

  • ISSN: 1873-2305