Abstract
Mesozooplankton distribution was investigated under the sea ice in the Kara Sea at five stations in February of 2002 by Juday net hauls. Copepods dominated the mesozooplankton community, accounting for 46–88% of the total abundance and 68–99% of the biomass. Oithona similis was the most abundant species in Yenisei Bay, being present with all age stages (including egg-carrying females). For the first time, Oithona atlantica (CIII–CV copepodites, females and males) were found in the southeastern Kara Sea. In the southern part, Copepoda nauplii prevailed in terms of total abundance while the mesozooplankton in the northwestern part was entirely dominated by older stages of Pseudocalanus minutus. The mesozooplankton structure appears to be determined by available food resources and increased water temperature due to a strong influence of warm Atlantic waters.
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Acknowledgments
The authors would like to thank the captains and the crews of the icebreakers and Dr. S. I. Bardan and A. A. Oleinik for the zooplankton sampling. Our special thanks to Dr. Ignacio Moore for the English revision and Dr. Dieter Piepenburg (Editor-in-Chief) for the English corrections and general reviewing of the manuscript. An anonymous referee provided valuable suggestion on earlier version of the manuscript.
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Dvoretsky, V.G., Dvoretsky, A.G. Distribution of the under-ice mesozooplankton in the Kara Sea in February 2002. Polar Biol 32, 1227–1231 (2009). https://doi.org/10.1007/s00300-009-0661-y
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DOI: https://doi.org/10.1007/s00300-009-0661-y