Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean
13 pages, 11 figures, 6 tables 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 In...
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ftcsic:oai:digital.csic.es:10261/275535 2024-02-11T09:58:49+01:00 Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean Miller, D.G.M. Barangé, Manuel Klindt, H. Murray, A.W.A. Hampton, I. Siegel, Volker 1993-09 http://hdl.handle.net/10261/275535 https://doi.org/10.1007/BF00346440 unknown Springer https://doi.org/10.1007/BF00346440 Sí issn: 0025-3162 e-issn: 1432-1793 Marine Biology 117: 171-183 (1993) http://hdl.handle.net/10261/275535 doi:10.1007/BF00346440 none artículo 1993 ftcsic https://doi.org/10.1007/BF00346440 2024-01-16T11:27:09Z 13 pages, 11 figures, 6 tables 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. © 1993 Springer-Verlag Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Digital.CSIC (Spanish National Research Council) Antarctic Indian Marine Biology 117 1 171 183 |
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Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
description |
13 pages, 11 figures, 6 tables 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. © 1993 Springer-Verlag |
format |
Article in Journal/Newspaper |
author |
Miller, D.G.M. Barangé, Manuel Klindt, H. Murray, A.W.A. Hampton, I. Siegel, Volker |
spellingShingle |
Miller, D.G.M. Barangé, Manuel Klindt, H. Murray, A.W.A. Hampton, I. Siegel, Volker Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean |
author_facet |
Miller, D.G.M. Barangé, Manuel Klindt, H. Murray, A.W.A. Hampton, I. Siegel, Volker |
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://hdl.handle.net/10261/275535 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 |
https://doi.org/10.1007/BF00346440 Sí issn: 0025-3162 e-issn: 1432-1793 Marine Biology 117: 171-183 (1993) http://hdl.handle.net/10261/275535 doi:10.1007/BF00346440 |
op_rights |
none |
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_ |
1790594597755289600 |