Abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at South Georgia
The diurnal vertical distribution and abundance of fish larvae was studied by net samples in the 265 m deep fjord of Cumberland East Bay, South Georgia. In early spring the six most abundant species of fish larvae in the upper 200 m of the water column were Champsocephalus gunnari, Lepidonotothen nu...
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Cambridge University Press
1992
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Online Access: | http://nora.nerc.ac.uk/id/eprint/518835/ https://doi.org/10.1017/S0954102092000609 |
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ftnerc:oai:nora.nerc.ac.uk:518835 2023-05-15T13:49:34+02:00 Abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at South Georgia North, A.W. Murray, A.W.A. 1992-12 http://nora.nerc.ac.uk/id/eprint/518835/ https://doi.org/10.1017/S0954102092000609 unknown Cambridge University Press North, A.W.; Murray, A.W.A. 1992 Abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at South Georgia. Antarctic Science, 4 (04). 405-412. https://doi.org/10.1017/S0954102092000609 <https://doi.org/10.1017/S0954102092000609> Publication - Article PeerReviewed 1992 ftnerc https://doi.org/10.1017/S0954102092000609 2023-02-04T19:45:50Z The diurnal vertical distribution and abundance of fish larvae was studied by net samples in the 265 m deep fjord of Cumberland East Bay, South Georgia. In early spring the six most abundant species of fish larvae in the upper 200 m of the water column were Champsocephalus gunnari, Lepidonotothen nudifrons, Pseudochaenichthys georgianus, Chaenocephalus aceratus, Parachaenichthys' georgianus and Electrona antarctica. In summer, the larvae of C. gunnari, Gobionotothen gibberifrons, Lepidonotothen larseni and Trematomus hansoni were most abundant, and the majority were found in the upper 140 m of the water column, with greatest densities in the top 2m. During both seasons most species showed some evidence of diurnal vertical migration. A distinct pattern was found for C. gunnari in summer; they were at 0–20 m during the day and 60–100 m at midnight. Net avoidance by the larvae of most species was greater before sunset in early spring, and during all periods of daylight in summer, than at other times of day. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica Natural Environment Research Council: NERC Open Research Archive 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 4 4 405 412 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
description |
The diurnal vertical distribution and abundance of fish larvae was studied by net samples in the 265 m deep fjord of Cumberland East Bay, South Georgia. In early spring the six most abundant species of fish larvae in the upper 200 m of the water column were Champsocephalus gunnari, Lepidonotothen nudifrons, Pseudochaenichthys georgianus, Chaenocephalus aceratus, Parachaenichthys' georgianus and Electrona antarctica. In summer, the larvae of C. gunnari, Gobionotothen gibberifrons, Lepidonotothen larseni and Trematomus hansoni were most abundant, and the majority were found in the upper 140 m of the water column, with greatest densities in the top 2m. During both seasons most species showed some evidence of diurnal vertical migration. A distinct pattern was found for C. gunnari in summer; they were at 0–20 m during the day and 60–100 m at midnight. Net avoidance by the larvae of most species was greater before sunset in early spring, and during all periods of daylight in summer, than at other times of day. |
format |
Article in Journal/Newspaper |
author |
North, A.W. Murray, A.W.A. |
spellingShingle |
North, A.W. Murray, A.W.A. Abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at South Georgia |
author_facet |
North, A.W. Murray, A.W.A. |
author_sort |
North, A.W. |
title |
Abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at South Georgia |
title_short |
Abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at South Georgia |
title_full |
Abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at South Georgia |
title_fullStr |
Abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at South Georgia |
title_full_unstemmed |
Abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at South Georgia |
title_sort |
abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at south georgia |
publisher |
Cambridge University Press |
publishDate |
1992 |
url |
http://nora.nerc.ac.uk/id/eprint/518835/ https://doi.org/10.1017/S0954102092000609 |
long_lat |
ENVELOPE(-36.426,-36.426,-54.288,-54.288) ENVELOPE(-36.426,-36.426,-54.288,-54.288) |
geographic |
East Bay Cumberland East Bay |
geographic_facet |
East Bay Cumberland East Bay |
genre |
Antarc* Antarctic Science Antarctica |
genre_facet |
Antarc* Antarctic Science Antarctica |
op_relation |
North, A.W.; Murray, A.W.A. 1992 Abundance and diurnal vertical distribution of fish larvae in early spring and summer in a fjord at South Georgia. Antarctic Science, 4 (04). 405-412. https://doi.org/10.1017/S0954102092000609 <https://doi.org/10.1017/S0954102092000609> |
op_doi |
https://doi.org/10.1017/S0954102092000609 |
container_title |
Antarctic Science |
container_volume |
4 |
container_issue |
4 |
container_start_page |
405 |
op_container_end_page |
412 |
_version_ |
1766251731606306816 |