Unpredictable
warming spells 'problems' for Arctic-breeding migratory birds
Date:
April 18, 2017
Source:
Netherlands Institute of Ecology (NIOO-KNAW)
The
breeding grounds of Arctic migratory birds such as the barnacle goose are
changing rapidly due to accelerated warming in the polar regions. They won't be
able to keep up with this climate change unless they can somehow anticipate it.
A research team from the Netherlands Institute of Ecology (NIOO-KNAW) employed
computer models to assess the future of the geese and their young. Results are
being published online by the scientific journal Global Change Biology.
It's
the time of year when barnacle geese and many other migratory birds prepare to
depart for their breeding grounds above the Arctic Circle. From their wintering
grounds in the Netherlands, the geese fly all the way up to the Barentsz Sea in
northern Russia, where they should arrive just as the snow has melted. But in
the polar regions, the climate is warming much more rapidly than in more
temperate areas like the Netherlands -- a phenomenon known as 'Arctic
amplification'.
It's
hard enough for humans to get to grips with the accelerated warming, let alone
for barnacle geese, as an earlier NIOO-led study showed. After all, how can they
tell from their wintering grounds if the snow has begun to melt thousands of
kilometres away? So is it possible for the barnacle geese to advance their
spring migration nonetheless, to predict climate change?
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