Polar ocean ecosystems in a changing world

Victor Smetacek () and Stephen Nicol
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Victor Smetacek: Alfred Wegener Institute for Polar and Marine Research
Stephen Nicol: Channel Highway

Nature, 2005, vol. 437, issue 7057, 362-368

Abstract: Abstract Polar organisms have adapted their seasonal cycles to the dynamic interface between ice and water. This interface ranges from the micrometre-sized brine channels within sea ice to the planetary-scale advance and retreat of sea ice. Polar marine ecosystems are particularly sensitive to climate change because small temperature differences can have large effects on the extent and thickness of sea ice. Little is known about the interactions between large, long-lived organisms and their planktonic food supply. Disentangling the effects of human exploitation of upper trophic levels from basin-wide, decade-scale climate cycles to identify long-term, global trends is a daunting challenge facing polar bio-oceanography.

Date: 2005
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DOI: 10.1038/nature04161

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