The distribution of zooplankton in an Antarctic fjord at South Georgia during summer and winter
Zooplankton was sampled intensively with an RMT 1+8M system in the fjord of Cumberland East Bay, South Georgia during late winter 1983 and summer 1987. In summer, biomass was highest in the surface 20 m, reaching 142 g dw/1000 m 3 . Copepods dominated the zooplankton comprising 96–99% by numbers, of...
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Cambridge University Press (CUP)
1989
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Online Access: | http://dx.doi.org/10.1017/s0954102089000210 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102089000210 |
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crcambridgeupr:10.1017/s0954102089000210 2024-03-03T08:38:17+00:00 The distribution of zooplankton in an Antarctic fjord at South Georgia during summer and winter Ward, Peter 1989 http://dx.doi.org/10.1017/s0954102089000210 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102089000210 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 1, issue 2, page 141-150 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1989 crcambridgeupr https://doi.org/10.1017/s0954102089000210 2024-02-08T08:46:24Z Zooplankton was sampled intensively with an RMT 1+8M system in the fjord of Cumberland East Bay, South Georgia during late winter 1983 and summer 1987. In summer, biomass was highest in the surface 20 m, reaching 142 g dw/1000 m 3 . Copepods dominated the zooplankton comprising 96–99% by numbers, of which 80–90% occurred in the top 100 m of the 265-m water column. The small clausocalanid Drepanopus forcipatus was particulary abundant. With increasing depth the proportion of non-copepod biomass, principally Mysidacea and Amphipoda increased significantly. Biomass throughout the water column in winter was generally 4–5 times lower than in summer although again copepods, and in particular D. forcipatus and members of the Metridinidae, still numerically dominated the plankton. Biomass levels were some 2–3 times greater than those found in Antarctic oceanic regions but were comparable with estimates from some boreal fjords. The mixture of neritic and oceanic species encountered, and the seasonal presence of some gelatinous zooplankton, particularly ctenophores, appears typical of the community structure of many fjord ecosystems. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Copepods Cambridge University Press Antarctic East Bay ENVELOPE(-36.426,-36.426,-54.288,-54.288) Cumberland East Bay ENVELOPE(-36.426,-36.426,-54.288,-54.288) Antarctic Science 1 2 141 150 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Ward, Peter The distribution of zooplankton in an Antarctic fjord at South Georgia during summer and winter |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Zooplankton was sampled intensively with an RMT 1+8M system in the fjord of Cumberland East Bay, South Georgia during late winter 1983 and summer 1987. In summer, biomass was highest in the surface 20 m, reaching 142 g dw/1000 m 3 . Copepods dominated the zooplankton comprising 96–99% by numbers, of which 80–90% occurred in the top 100 m of the 265-m water column. The small clausocalanid Drepanopus forcipatus was particulary abundant. With increasing depth the proportion of non-copepod biomass, principally Mysidacea and Amphipoda increased significantly. Biomass throughout the water column in winter was generally 4–5 times lower than in summer although again copepods, and in particular D. forcipatus and members of the Metridinidae, still numerically dominated the plankton. Biomass levels were some 2–3 times greater than those found in Antarctic oceanic regions but were comparable with estimates from some boreal fjords. The mixture of neritic and oceanic species encountered, and the seasonal presence of some gelatinous zooplankton, particularly ctenophores, appears typical of the community structure of many fjord ecosystems. |
format |
Article in Journal/Newspaper |
author |
Ward, Peter |
author_facet |
Ward, Peter |
author_sort |
Ward, Peter |
title |
The distribution of zooplankton in an Antarctic fjord at South Georgia during summer and winter |
title_short |
The distribution of zooplankton in an Antarctic fjord at South Georgia during summer and winter |
title_full |
The distribution of zooplankton in an Antarctic fjord at South Georgia during summer and winter |
title_fullStr |
The distribution of zooplankton in an Antarctic fjord at South Georgia during summer and winter |
title_full_unstemmed |
The distribution of zooplankton in an Antarctic fjord at South Georgia during summer and winter |
title_sort |
distribution of zooplankton in an antarctic fjord at south georgia during summer and winter |
publisher |
Cambridge University Press (CUP) |
publishDate |
1989 |
url |
http://dx.doi.org/10.1017/s0954102089000210 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102089000210 |
long_lat |
ENVELOPE(-36.426,-36.426,-54.288,-54.288) ENVELOPE(-36.426,-36.426,-54.288,-54.288) |
geographic |
Antarctic East Bay Cumberland East Bay |
geographic_facet |
Antarctic East Bay Cumberland East Bay |
genre |
Antarc* Antarctic Antarctic Science Copepods |
genre_facet |
Antarc* Antarctic Antarctic Science Copepods |
op_source |
Antarctic Science volume 1, issue 2, page 141-150 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102089000210 |
container_title |
Antarctic Science |
container_volume |
1 |
container_issue |
2 |
container_start_page |
141 |
op_container_end_page |
150 |
_version_ |
1792506255771697152 |