Mesoscale distribution and abundance of four pelagic copepod species in Prydz Bay
Knowledge of copepod abundance and distribution has been limited, particularly in the Indian Ocean sector, as the use of coarse sampling gear has meant that copepods were frequently lost from the catch. This study analyses samples obtained from Prydz Bay using a fine mesh (300 μm) Rectangular Midwat...
Published in: | Antarctic Science |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1997
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0954102097000163 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000163 |
id |
crcambridgeupr:10.1017/s0954102097000163 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0954102097000163 2024-03-03T08:38:44+00:00 Mesoscale distribution and abundance of four pelagic copepod species in Prydz Bay Beaumont, K.L. Hosie, G.W. 1997 http://dx.doi.org/10.1017/s0954102097000163 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000163 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 9, issue 2, page 121-133 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1997 crcambridgeupr https://doi.org/10.1017/s0954102097000163 2024-02-08T08:36:23Z Knowledge of copepod abundance and distribution has been limited, particularly in the Indian Ocean sector, as the use of coarse sampling gear has meant that copepods were frequently lost from the catch. This study analyses samples obtained from Prydz Bay using a fine mesh (300 μm) Rectangular Midwater Trawl (RMT1) net during summer 1992–93. Results demonstrate that a net of mesh 4.5 mm used in previous studies underestimates total copepod abundance by a factor of 38. The abundance of the smaller species has been underestimated the most. New estimates of copepod biomass indicate that copepods represent approximately 27% of krill biomass. Copepod and krill distributions are shown to be discrete at 82.4% dissimilarity. Mean temperature accounted for 33.6% of the variation in copepod distribution while two of the species showed a slight correlation with chlorophyll a pigment data. These results highlight the numerical importance of copepods and the species' distributions in the East Antarctic marine ecosystem. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Prydz Bay Copepods Cambridge University Press Antarctic Prydz Bay Indian Antarctic Science 9 2 121 133 |
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 Beaumont, K.L. Hosie, G.W. Mesoscale distribution and abundance of four pelagic copepod species in Prydz Bay |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Knowledge of copepod abundance and distribution has been limited, particularly in the Indian Ocean sector, as the use of coarse sampling gear has meant that copepods were frequently lost from the catch. This study analyses samples obtained from Prydz Bay using a fine mesh (300 μm) Rectangular Midwater Trawl (RMT1) net during summer 1992–93. Results demonstrate that a net of mesh 4.5 mm used in previous studies underestimates total copepod abundance by a factor of 38. The abundance of the smaller species has been underestimated the most. New estimates of copepod biomass indicate that copepods represent approximately 27% of krill biomass. Copepod and krill distributions are shown to be discrete at 82.4% dissimilarity. Mean temperature accounted for 33.6% of the variation in copepod distribution while two of the species showed a slight correlation with chlorophyll a pigment data. These results highlight the numerical importance of copepods and the species' distributions in the East Antarctic marine ecosystem. |
format |
Article in Journal/Newspaper |
author |
Beaumont, K.L. Hosie, G.W. |
author_facet |
Beaumont, K.L. Hosie, G.W. |
author_sort |
Beaumont, K.L. |
title |
Mesoscale distribution and abundance of four pelagic copepod species in Prydz Bay |
title_short |
Mesoscale distribution and abundance of four pelagic copepod species in Prydz Bay |
title_full |
Mesoscale distribution and abundance of four pelagic copepod species in Prydz Bay |
title_fullStr |
Mesoscale distribution and abundance of four pelagic copepod species in Prydz Bay |
title_full_unstemmed |
Mesoscale distribution and abundance of four pelagic copepod species in Prydz Bay |
title_sort |
mesoscale distribution and abundance of four pelagic copepod species in prydz bay |
publisher |
Cambridge University Press (CUP) |
publishDate |
1997 |
url |
http://dx.doi.org/10.1017/s0954102097000163 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000163 |
geographic |
Antarctic Prydz Bay Indian |
geographic_facet |
Antarctic Prydz Bay Indian |
genre |
Antarc* Antarctic Antarctic Science Prydz Bay Copepods |
genre_facet |
Antarc* Antarctic Antarctic Science Prydz Bay Copepods |
op_source |
Antarctic Science volume 9, issue 2, page 121-133 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102097000163 |
container_title |
Antarctic Science |
container_volume |
9 |
container_issue |
2 |
container_start_page |
121 |
op_container_end_page |
133 |
_version_ |
1792507177790865408 |