Unexpected Levels of Biological Activity during the Polar Night Offer New Perspectives on a Warming Arctic
BERGE, Jørgen
The Arctic University of Norway [Tromsø, Norway] [UiT]
The University Centre in Svalbard [UNIS]
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The Arctic University of Norway [Tromsø, Norway] [UiT]
The University Centre in Svalbard [UNIS]
BERGE, Jørgen
The Arctic University of Norway [Tromsø, Norway] [UiT]
The University Centre in Svalbard [UNIS]
The Arctic University of Norway [Tromsø, Norway] [UiT]
The University Centre in Svalbard [UNIS]
JOHNSEN, Geir
Norwegian University of Science and Technology [Trondheim] [NTNU]
The University Centre in Svalbard [UNIS]
Norwegian University of Science and Technology [Trondheim] [NTNU]
The University Centre in Svalbard [UNIS]
COTTIER, Finlo
The Arctic University of Norway [Tromsø, Norway] [UiT]
Scottish Association for Marine Science [SAMS]
The Arctic University of Norway [Tromsø, Norway] [UiT]
Scottish Association for Marine Science [SAMS]
FALK-PETERSEN, Stig
The Arctic University of Norway [Tromsø, Norway] [UiT]
The University Centre in Svalbard [UNIS]
The Arctic University of Norway [Tromsø, Norway] [UiT]
The University Centre in Svalbard [UNIS]
VOGEDES, Daniel
The Arctic University of Norway [Tromsø, Norway] [UiT]
The University Centre in Svalbard [UNIS]
< Reduce
The Arctic University of Norway [Tromsø, Norway] [UiT]
The University Centre in Svalbard [UNIS]
Language
EN
Article de revue
This item was published in
Current Biology - CB. 2015, vol. 25, n° 19, p. 2555-2561
English Abstract
Summary The current understanding of Arctic ecosystems is deeply rooted in the classical view of a bottom-up controlled system with strong physical forcing and seasonality in primary-production regimes. Consequently, the ...Read more >
Summary The current understanding of Arctic ecosystems is deeply rooted in the classical view of a bottom-up controlled system with strong physical forcing and seasonality in primary-production regimes. Consequently, the Arctic polar night is commonly disregarded as a time of year when biological activities are reduced to a minimum due to a reduced food supply. Here, based upon a multidisciplinary ecosystem-scale study from the polar night at 79°N, we present an entirely different view. Instead of an ecosystem that has entered a resting state, we document a system with high activity levels and biological interactions across most trophic levels. In some habitats, biological diversity and presence of juvenile stages were elevated in winter months compared to the more productive and sunlit periods. Ultimately, our results suggest a different perspective regarding ecosystem function that will be of importance for future environmental management and decision making, especially at a time when Arctic regions are experiencing accelerated environmental change.Read less <
English Keywords
ACL
SEA-ICE COVER
CALANUS-FINMARCHICUS
VERTICAL MIGRATION
BEAUFORT SEA
WAX ESTERS
FOOD WEBS
FJORD
BIOLUMINESCENCE
KONGSFJORDEN
ZOOPLANKTON
European Project
DEVelopment Of innovative Tools for understanding marine biodiversity and assessing good Environmental Status
ANR Project
LabexMER Marine Excellence Research: a changing ocean
Effet des changements climatiques sur le benthos en Arctique
Effet des changements climatiques sur le benthos en Arctique