Interannual changes in zooplankton on the West Spitsbergen Shelf in relation to hydrography and their consequences for the diet of planktivorous seabirds

Kwasniewski, S.; Gluchowska, M.; Walkusz, W.; Karnovsky, N. J.; Jakubas, D.; Wojczulanis-Jakubas, K.; Harding, A. M. A.; Goszczko, I. ORCID: https://orcid.org/0000-0002-5719-5860; Cisek, M.; Beszczynska-Moller, A.; Walczowski, W.; Weslawski, J. M.; Stempniewicz, L.. 2012 Interannual changes in zooplankton on the West Spitsbergen Shelf in relation to hydrography and their consequences for the diet of planktivorous seabirds. ICES Journal of Marine Science, 69 (5). 890-901. 10.1093/icesjms/fss076

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Official URL: http://dx.doi.org/10.1093/icesjms/fss076

Abstract/Summary

The purpose of the work was to determine how atmospheric and oceanic processes (the North Atlantic Oscillation (NAO) and the Arctic Ocean Oscillation (AOO)) influence hydrography and zooplankton on the West Spitsbergen Shelf (WSS), and the impacts of the processes on chick meals of zooplanktivorous little auks Alle alle. There were distinct Atlantic and Arctic oceanographic domains on the shelf resulting from the presence of the West Spitsbergen Current and the Sørkapp Current, which contain different proportions of Calanus finmarchicus and C. glacialis. The abundance of warm- and cold-water species varied as a result of an interplay between processes in the atmosphere and ocean. In the Arctic domain, on which the study focused, the NAO impacted oceanography, zooplankton, and consequently little auk chick meals, with time-lags of 4–7 years. The diet of little auk chicks was more energy-rich when C. glacialis stage 5 in the Arctic community were more easily available. To date, the changes in zooplankton abundance on the WSS have not posed a threat to the ability of little auks to feed their chicks lipid-rich Arctic copepods.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1093/icesjms/fss076
ISSN:	1054-3139
Date made live:	24 Jul 2019 15:11 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/524490

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1093/icesjms/fss076

ISSN:

1054-3139

Date made live:

24 Jul 2019 15:11 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/524490