Dec. 17, 2012 — A protected area network
should ensure the maintenance of biodiversity, but climate is changing rapidly,
thereby creating further demand for the protected area network to be efficient
in preserving biota. Due to climate change species ranges are expected to move
polewards, which poses challenges to the protected area network.
Population changes of different bird species
groups according to their habitat preferences in boreal protected areas in
Finland were studied on the basis of large-scale bird censuses carried out in
1981 and in 2000. Mean temperatures rose clearly between the two time slices in
Finland, for example, mean April-June temperature by 0.7 °C.
The study "Preserving species populations
in the boreal zone in a changing climate: contrasting trends of bird species
groups in a protected area network" by Raimo Virkkala from the Finnish
Environment Institute and Ari Rajasärkkä from Metsähallitus was published in
the open access journal Nature Conservation. Bird censuses were compiled
and organized by Metsähallitus, which governs the stated-owned protected areas
in Finland. Tens of competent ornithologists carried out the censuses, which
included altogether over 11,600 km of line transects.
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