Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean
The distributional features and physical characteristics of 4830 krill (Euphausia superba Dana) aggregations detected acoustically in the Southwest Atlantic between 26 January and 21 February 1981 are described. Results are compared with aggregations detected in the Indian Ocean. Aggregations in the...
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ftnerc:oai:nora.nerc.ac.uk:517905 2023-05-15T13:49:34+02:00 Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean Miller, D.G.M. Barange, M. Klindt, H. Murray, A.W.A. Hampton, I. Siegel, V. 1993-01 http://nora.nerc.ac.uk/id/eprint/517905/ https://doi.org/10.1007/BF00346440 unknown Springer Miller, D.G.M.; Barange, M.; Klindt, H.; Murray, A.W.A.; Hampton, I.; Siegel, V. 1993 Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean. Marine Biology, 117 (1). 171-183. https://doi.org/10.1007/BF00346440 <https://doi.org/10.1007/BF00346440> Publication - Article PeerReviewed 1993 ftnerc https://doi.org/10.1007/BF00346440 2023-02-04T19:45:24Z The distributional features and physical characteristics of 4830 krill (Euphausia superba Dana) aggregations detected acoustically in the Southwest Atlantic between 26 January and 21 February 1981 are described. Results are compared with aggregations detected in the Indian Ocean. Aggregations in the Atlantic were larger, closer to the surface and to each other than in the Indian Ocean. Similar patterns in the distribution of aggregation spacing along survey transects were found in the two areas, although the pattern of spacings in the Atlantic indicates differences in the scale of aggregation. Serial interdependence of aggregation variables was minimal in the Atlantic, with aggregation thickness, length and spacing showing weak inter-relationships. Weak functional association, between water depth and aggregation thickness was evident. Investigation of variability in aggregation structure in relation to prevailing environmental conditions gave equivocal results and no clear association between any aggregation variable and prevailing hydrography was observed. The implications of these results for future studies on krill aggregation are discussed in relation to a conceptual framework which was developed from the present results and aimed at linking krill aggregation characteristics to environmental features. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Natural Environment Research Council: NERC Open Research Archive Antarctic Indian Marine Biology 117 1 171 183 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
The distributional features and physical characteristics of 4830 krill (Euphausia superba Dana) aggregations detected acoustically in the Southwest Atlantic between 26 January and 21 February 1981 are described. Results are compared with aggregations detected in the Indian Ocean. Aggregations in the Atlantic were larger, closer to the surface and to each other than in the Indian Ocean. Similar patterns in the distribution of aggregation spacing along survey transects were found in the two areas, although the pattern of spacings in the Atlantic indicates differences in the scale of aggregation. Serial interdependence of aggregation variables was minimal in the Atlantic, with aggregation thickness, length and spacing showing weak inter-relationships. Weak functional association, between water depth and aggregation thickness was evident. Investigation of variability in aggregation structure in relation to prevailing environmental conditions gave equivocal results and no clear association between any aggregation variable and prevailing hydrography was observed. The implications of these results for future studies on krill aggregation are discussed in relation to a conceptual framework which was developed from the present results and aimed at linking krill aggregation characteristics to environmental features. |
format |
Article in Journal/Newspaper |
author |
Miller, D.G.M. Barange, M. Klindt, H. Murray, A.W.A. Hampton, I. Siegel, V. |
spellingShingle |
Miller, D.G.M. Barange, M. Klindt, H. Murray, A.W.A. Hampton, I. Siegel, V. Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean |
author_facet |
Miller, D.G.M. Barange, M. Klindt, H. Murray, A.W.A. Hampton, I. Siegel, V. |
author_sort |
Miller, D.G.M. |
title |
Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean |
title_short |
Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean |
title_full |
Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean |
title_fullStr |
Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean |
title_full_unstemmed |
Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean |
title_sort |
antarctic krill aggregation characteristics from acoustic observations in the southwest atlantic ocean |
publisher |
Springer |
publishDate |
1993 |
url |
http://nora.nerc.ac.uk/id/eprint/517905/ https://doi.org/10.1007/BF00346440 |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba |
op_relation |
Miller, D.G.M.; Barange, M.; Klindt, H.; Murray, A.W.A.; Hampton, I.; Siegel, V. 1993 Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean. Marine Biology, 117 (1). 171-183. https://doi.org/10.1007/BF00346440 <https://doi.org/10.1007/BF00346440> |
op_doi |
https://doi.org/10.1007/BF00346440 |
container_title |
Marine Biology |
container_volume |
117 |
container_issue |
1 |
container_start_page |
171 |
op_container_end_page |
183 |
_version_ |
1766251695634907136 |