Acoustic abundance estimation of the Icelandic stock of capelin : 1978-1982
ICES, Symposium on Fisheries Acoustics, Bergen, 1982, No. 21 During the period October 1978 - february 1982 several abundance estimates and yearclass composition of the Icelandic capelin stock were obtained by acoustic methods. Surveying has been carried out in July-Agust, September, October, Novemb...
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ftimr:oai:imr.brage.unit.no:11250/102130 2023-05-15T16:49:49+02:00 Acoustic abundance estimation of the Icelandic stock of capelin : 1978-1982 Vilhjálmsson, Hjálmar Reynisson, Páll Hamre, Johannes Røttingen, Ingolf 1982 application/pdf http://hdl.handle.net/11250/102130 eng eng ICES This report is not to be quoted without prior consultation with the General Secretary. http://hdl.handle.net/11250/102130 51 s. capelin lodde acoustics akustikk stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Working paper 1982 ftimr 2021-09-23T20:15:54Z ICES, Symposium on Fisheries Acoustics, Bergen, 1982, No. 21 During the period October 1978 - february 1982 several abundance estimates and yearclass composition of the Icelandic capelin stock were obtained by acoustic methods. Surveying has been carried out in July-Agust, September, October, November as well as in January-February and on one occasion in early March. It has been found that consistent abundance estimates of the older yearclasses (excluding 0- and 1-group fish) can be obtained in autumn and winter by this method while the fish still occupy deep water areas off NW-, N-, NE- and E-Iceland. Due to drift ice and periods of bad weather it has at times proved necessary to wait or repeat surveys for these reasons. This paper describes and discusses the abundance estimates obtained during the above period. They have been used for management purposes. Report Iceland Institute for Marine Research: Brage IMR Bergen |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
topic |
capelin lodde acoustics akustikk stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
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capelin lodde acoustics akustikk stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Vilhjálmsson, Hjálmar Reynisson, Páll Hamre, Johannes Røttingen, Ingolf Acoustic abundance estimation of the Icelandic stock of capelin : 1978-1982 |
topic_facet |
capelin lodde acoustics akustikk stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
description |
ICES, Symposium on Fisheries Acoustics, Bergen, 1982, No. 21 During the period October 1978 - february 1982 several abundance estimates and yearclass composition of the Icelandic capelin stock were obtained by acoustic methods. Surveying has been carried out in July-Agust, September, October, November as well as in January-February and on one occasion in early March. It has been found that consistent abundance estimates of the older yearclasses (excluding 0- and 1-group fish) can be obtained in autumn and winter by this method while the fish still occupy deep water areas off NW-, N-, NE- and E-Iceland. Due to drift ice and periods of bad weather it has at times proved necessary to wait or repeat surveys for these reasons. This paper describes and discusses the abundance estimates obtained during the above period. They have been used for management purposes. |
format |
Report |
author |
Vilhjálmsson, Hjálmar Reynisson, Páll Hamre, Johannes Røttingen, Ingolf |
author_facet |
Vilhjálmsson, Hjálmar Reynisson, Páll Hamre, Johannes Røttingen, Ingolf |
author_sort |
Vilhjálmsson, Hjálmar |
title |
Acoustic abundance estimation of the Icelandic stock of capelin : 1978-1982 |
title_short |
Acoustic abundance estimation of the Icelandic stock of capelin : 1978-1982 |
title_full |
Acoustic abundance estimation of the Icelandic stock of capelin : 1978-1982 |
title_fullStr |
Acoustic abundance estimation of the Icelandic stock of capelin : 1978-1982 |
title_full_unstemmed |
Acoustic abundance estimation of the Icelandic stock of capelin : 1978-1982 |
title_sort |
acoustic abundance estimation of the icelandic stock of capelin : 1978-1982 |
publisher |
ICES |
publishDate |
1982 |
url |
http://hdl.handle.net/11250/102130 |
geographic |
Bergen |
geographic_facet |
Bergen |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
51 s. |
op_relation |
This report is not to be quoted without prior consultation with the General Secretary. http://hdl.handle.net/11250/102130 |
_version_ |
1766040001646166016 |