Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom

The main emphasis of this study was to analyse the short-term development of abundance, population structure and vertical distribution of the dominant calanoid copepods during a phytoplankton bloom in the coastal area of the eastern Weddell Sea in December 2003. Microcalanus pygmaeus was by far the...

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Published in:Polar Biology
Main Authors: Michels, Jan, Schnack-Schiel, Sigrid B., Pasternak, Anna, Mizdalski, Elke, Isla, E., Gerdes, Dieter
Format: Article in Journal/Newspaper
Language:English
Published: Springer 2012
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Online Access:https://oceanrep.geomar.de/id/eprint/27134/
https://oceanrep.geomar.de/id/eprint/27134/1/art_10.1007_s00300-011-1083-1.pdf
https://doi.org/10.1007/s00300-011-1083-1
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spelling ftoceanrep:oai:oceanrep.geomar.de:27134 2023-05-15T18:02:02+02:00 Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom Michels, Jan Schnack-Schiel, Sigrid B. Pasternak, Anna Mizdalski, Elke Isla, E. Gerdes, Dieter 2012 text https://oceanrep.geomar.de/id/eprint/27134/ https://oceanrep.geomar.de/id/eprint/27134/1/art_10.1007_s00300-011-1083-1.pdf https://doi.org/10.1007/s00300-011-1083-1 en eng Springer https://oceanrep.geomar.de/id/eprint/27134/1/art_10.1007_s00300-011-1083-1.pdf Michels, J., Schnack-Schiel, S. B., Pasternak, A., Mizdalski, E., Isla, E. and Gerdes, D. (2012) Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom. Polar Biology, 35 (3). pp. 369-386. DOI 10.1007/s00300-011-1083-1 <https://doi.org/10.1007/s00300-011-1083-1>. doi:10.1007/s00300-011-1083-1 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2012 ftoceanrep https://doi.org/10.1007/s00300-011-1083-1 2023-04-07T15:17:03Z The main emphasis of this study was to analyse the short-term development of abundance, population structure and vertical distribution of the dominant calanoid copepods during a phytoplankton bloom in the coastal area of the eastern Weddell Sea in December 2003. Microcalanus pygmaeus was by far the most abundant calanoid species. Metridia gerlachei, Ctenocalanus citer, Calanoides acutus, Calanus propinquus and the ice-associated Stephos longipes were also present in considerable proportions. The observed changes in the population characteristics and parameters of these species are described in detail and discussed in the context of the spring phytoplankton bloom. A conspicuous event occurring during the final stage of the study was the development of a strong storm. While the results suggest that this storm did not have any considerable influence on the populations of all other investigated copepod species, it very likely caused pronounced changes in the S. longipes population present in the water column. Before the storm, S. longipes was found primarily in the upper 100 m of the water column, and its population was dominated by adults (mean proportion = 41%) and the copepodite stage I (mean proportion = 30%). After the storm, the abundance increased considerably, and the copepodite stage I contributed by far the largest proportion (53%) of the total population indicating that the early copepodite stages probably had been released from the sea ice into the under ice water layer due to ice break-up and ice melt processes caused by the storm. Article in Journal/Newspaper Polar Biology Sea ice Weddell Sea Copepods OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Weddell Weddell Sea Polar Biology 35 3 369 386
institution Open Polar
collection OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
op_collection_id ftoceanrep
language English
description The main emphasis of this study was to analyse the short-term development of abundance, population structure and vertical distribution of the dominant calanoid copepods during a phytoplankton bloom in the coastal area of the eastern Weddell Sea in December 2003. Microcalanus pygmaeus was by far the most abundant calanoid species. Metridia gerlachei, Ctenocalanus citer, Calanoides acutus, Calanus propinquus and the ice-associated Stephos longipes were also present in considerable proportions. The observed changes in the population characteristics and parameters of these species are described in detail and discussed in the context of the spring phytoplankton bloom. A conspicuous event occurring during the final stage of the study was the development of a strong storm. While the results suggest that this storm did not have any considerable influence on the populations of all other investigated copepod species, it very likely caused pronounced changes in the S. longipes population present in the water column. Before the storm, S. longipes was found primarily in the upper 100 m of the water column, and its population was dominated by adults (mean proportion = 41%) and the copepodite stage I (mean proportion = 30%). After the storm, the abundance increased considerably, and the copepodite stage I contributed by far the largest proportion (53%) of the total population indicating that the early copepodite stages probably had been released from the sea ice into the under ice water layer due to ice break-up and ice melt processes caused by the storm.
format Article in Journal/Newspaper
author Michels, Jan
Schnack-Schiel, Sigrid B.
Pasternak, Anna
Mizdalski, Elke
Isla, E.
Gerdes, Dieter
spellingShingle Michels, Jan
Schnack-Schiel, Sigrid B.
Pasternak, Anna
Mizdalski, Elke
Isla, E.
Gerdes, Dieter
Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom
author_facet Michels, Jan
Schnack-Schiel, Sigrid B.
Pasternak, Anna
Mizdalski, Elke
Isla, E.
Gerdes, Dieter
author_sort Michels, Jan
title Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom
title_short Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom
title_full Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom
title_fullStr Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom
title_full_unstemmed Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom
title_sort abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern weddell sea shelf during a spring phytoplankton bloom
publisher Springer
publishDate 2012
url https://oceanrep.geomar.de/id/eprint/27134/
https://oceanrep.geomar.de/id/eprint/27134/1/art_10.1007_s00300-011-1083-1.pdf
https://doi.org/10.1007/s00300-011-1083-1
geographic Weddell
Weddell Sea
geographic_facet Weddell
Weddell Sea
genre Polar Biology
Sea ice
Weddell Sea
Copepods
genre_facet Polar Biology
Sea ice
Weddell Sea
Copepods
op_relation https://oceanrep.geomar.de/id/eprint/27134/1/art_10.1007_s00300-011-1083-1.pdf
Michels, J., Schnack-Schiel, S. B., Pasternak, A., Mizdalski, E., Isla, E. and Gerdes, D. (2012) Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom. Polar Biology, 35 (3). pp. 369-386. DOI 10.1007/s00300-011-1083-1 <https://doi.org/10.1007/s00300-011-1083-1>.
doi:10.1007/s00300-011-1083-1
op_rights info:eu-repo/semantics/restrictedAccess
op_doi https://doi.org/10.1007/s00300-011-1083-1
container_title Polar Biology
container_volume 35
container_issue 3
container_start_page 369
op_container_end_page 386
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