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Paul Caplat. Foto.

Paul Caplat

Forskare

Paul Caplat. Foto.

Area mediated shifts in bird community composition : A study on a fragmented Mediterranean grassland

Författare

  • Paul Caplat
  • Jocelyn Fonderflick

Summary, in English

The effects of habitat fragmentation on birds have often been studied in forest specialist species. Here we aimed at comparing the response of open habitat birds within a range of habitat specialization. The study area was a Mediterranean pseudo-steppe, designated as important for conservation yet fragmented by tree encroachment. We defined bird species dependency on steppe-like habitat by a correspondence analysis, allowing us to distinguish between specialists, generalists and scrubland species. We studied species abundance in relation to fragment area, testing whether species representation in fragments differed from those in continuous habitat. This analysis showed a contrasted response to fragment size between "open habitat" specialist species and generalist ones. Open habitat species were under-represented in the smallest fragments, while generalist were over-represented in small fragments in comparison to their distribution in continuous habitats. We discuss how these results can be linked to species habitat requirements. We find that scrubland species seem to be favoured by encroachment of woody vegetation, as they are able to explore and use the wooded matrix; however specialist species are restricted to open patches and are sensitive to a reduction in patch size. This allows us to predict how different species can exhibit a different sensitivity to habitat fragmentation.

Publiceringsår

2009-09

Språk

Engelska

Sidor

2979-2995

Publikation/Tidskrift/Serie

Biodiversity and Conservation

Volym

18

Issue

11

Dokumenttyp

Artikel i tidskrift

Förlag

Springer

Ämne

  • Zoology
  • Ecology

Nyckelord

  • Breeding birds
  • Community composition
  • Conservation biology
  • Habitat generalist
  • Habitat specialist
  • Mediterranean mountain
  • Species distribution

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 0960-3115