Substantial decline of Northern European peatland bird populations: Consequences of drainage

Research output: Contribution to journalArticle

Abstract

Northern European peatlands are important habitats for biological conservation because they support rich biodiversity and unique species compositions. However, historical management of peatland habitats has had negative consequences for biodiversity and their degradation remains a major conservation concern. Despite increasing awareness of the conservation value of peatlands, the statuses and ecological requirements of peatland species have remained largely understudied. Here, we first analysed temporal trends of Northern European peatland birds to document the status of their populations using bird data from five different countries. Second, we used Finnish monitoring data to assess habitat preferences of peatland bird species, hence helping to target conservation to the most relevant habitat types. There was a general decline of 40% in Northern European peatland bird population sizes in 1981–2014 (speed of decline 1.5%/year) largely driven by Finland, where populations declined almost 50% (2.0% annual decline). In Sweden and Norway, peatland bird populations declined by 20% during 1997–2014 (1.0% annual decline). In contrast, southern populations in Estonia and Latvia, where the majority of open peatlands are protected, showed a 40% increase during 1981–2014 (1.0% annual increase). The most important habitat characteristics preferred by common peatland species in Finland were openness and low tree height, while wetness proved to be an important feature for waders. Drainage of peatlands had clear negative effects on the densities of many species, with the only exception of rustic bunting, which specializes on edge habitats. Our findings call for more effective conservation actions in Northern European peatland habitats, especially in Finland where peatland drainage represents a major threat to biodiversity.

Details

Authors
  • Sara Fraixedas
  • Andreas Lindén
  • Kalle Meller
  • Åke Lindström
  • Oskars Keišs
  • John Atle Kålås
  • Magne Husby
  • Agu Leivits
  • Meelis Leivits
  • Aleksi Lehikoinen
Organisations
External organisations
  • University of Helsinki
  • Tour du Valat
  • University of Latvia
  • Norwegian Institute for Nature Research
  • Novia University of Applied Sciences
  • Nord University
  • Estonian Environmental Board
  • University of Tartu
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Zoology
  • Ecology

Keywords

  • Bird biodiversity, Boreal peatlands, Ditching, Habitat loss, Protected areas
Original languageEnglish
Pages (from-to)223-232
Number of pages10
JournalBiological Conservation
Volume214
Publication statusPublished - 2017 Oct 1
Publication categoryResearch
Peer-reviewedYes

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