Zooplankton and phytoplankton abundance, and stomach content of polar cod in the southern Arctic Ocean and Rijpfjorden ...

The diel vertical migration (DVM) of zooplankton and pelagic fish in the southern Arctic Ocean (82°N) and in Rijpfjorden (Svalbard, Nordaustlandet, 80°N) was investigated in autumn 2004, when there were distinct differences in light conditions between day and night. We collected data on zooplankton...

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Bibliographic Details
Main Authors: Falk-Petersen, Stig, Leu, Eva, Berge, Jørgen, Kwasniewski, Slawomir, Nygård, Henrik, Røstad, Anders, Keskinen, Essi, Thormar, Jonas, von Quillfeldt, Cecilie, Wold, Anette, Gulliksen, Bjørn
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2008
Subjects:
ipy
International Polar Year 2007-2008 IPY
Arctic Ocean
Calanus hyperboreus
International Polar Year
IPY
Nordaustlandet
Phytoplankton
polar cod
Rijpfjord*
Sea ice
Svalbard
Zooplankton
Online Access:https://dx.doi.org/10.1594/pangaea.786699
https://doi.pangaea.de/10.1594/PANGAEA.786699
Description
Summary:The diel vertical migration (DVM) of zooplankton and pelagic fish in the southern Arctic Ocean (82°N) and in Rijpfjorden (Svalbard, Nordaustlandet, 80°N) was investigated in autumn 2004, when there were distinct differences in light conditions between day and night. We collected data on zooplankton and fish distribution using plankton nets, trawls, and an echo sounder together with data on environmental parameters including sea-ice distribution, hydrography, and in situ fluorescence in the water column. In Rijpfjorden, the Arctic phytoplankton bloom had culminated several weeks prior to the present study and all three Calanus species had migrated down to depths for over wintering and did not show any changes in vertical distribution. However, in the Arctic Ocean pack ice at 82°N, Calanus hyperboreus, was found in high abundances (up to 65 ind/m**3) actively feeding on the Arctic bloom in September. They performed a classic DVM, feeding in the upper 50 m during the night and descending to depths below 50 m ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...

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