Life history and exploitation of the Norwegian spring spawning herring
Biology and fisheries of the Norwegian spring spawning herring and blue whiting in the Northeast Atlantic. Proceedings of the fourth Soviet-Norwegian Symposium. Bergen, 12 - 16 June 1989. This paper is a review of the history and exploitation of the Norwegian spring spawning herring stock. In a virg...
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ftimr:oai:imr.brage.unit.no:11250/107569 2023-05-15T15:38:47+02:00 Life history and exploitation of the Norwegian spring spawning herring Hamre, Johannes 1990 1976316 bytes application/pdf http://hdl.handle.net/11250/107569 eng eng PINRO-IMR Symposium 4 http://hdl.handle.net/11250/107569 Conference object 1990 ftimr 2021-09-23T20:14:43Z Biology and fisheries of the Norwegian spring spawning herring and blue whiting in the Northeast Atlantic. Proceedings of the fourth Soviet-Norwegian Symposium. Bergen, 12 - 16 June 1989. This paper is a review of the history and exploitation of the Norwegian spring spawning herring stock. In a virgin state the biomass of this stock may have ranged from 15 to 20 million tonnes and it was the most important fish resource in the Northeast Atlantic. The adult stock utilized the rich plankton production along the Polar Front in the Norwegian Sea but spawned during winter on the Norwegian west coast. These spawners formed the basis for the largest fishery in Europe for centuries. The young and adolescent herring are distributed in Norwegian coastal waters and in the Barents Sea where they constitute the most important prey species or many stocks of predators, both of fish , birds and mammals. Due to technical advances the exploitation of the herring increased tremendously in the 1960's and the adult stock was fished out completely in 1970. Some small components of juvenile herring did however survive, and spawned on the traditional spawning grounds in 1973. After spawning the herring did not migrate to the traditional feeding area in the Norwegian Sea, but remained i n Norwegian coastal waters throughout the year. In later years the stock has recovered slowly, but the old traditional migration pattern of herring between the Polar Front area and the Norwegian coast has not yet been retained. It is concluded that the break down of the life cycles of the herring is the prime reason for the recent crisis which has developed in the Barents Sea stocks and fisheries. Conference Object Barents Sea Northeast Atlantic Norwegian Sea Institute for Marine Research: Brage IMR Barents Sea Bergen Norwegian Sea |
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Institute for Marine Research: Brage IMR |
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language |
English |
description |
Biology and fisheries of the Norwegian spring spawning herring and blue whiting in the Northeast Atlantic. Proceedings of the fourth Soviet-Norwegian Symposium. Bergen, 12 - 16 June 1989. This paper is a review of the history and exploitation of the Norwegian spring spawning herring stock. In a virgin state the biomass of this stock may have ranged from 15 to 20 million tonnes and it was the most important fish resource in the Northeast Atlantic. The adult stock utilized the rich plankton production along the Polar Front in the Norwegian Sea but spawned during winter on the Norwegian west coast. These spawners formed the basis for the largest fishery in Europe for centuries. The young and adolescent herring are distributed in Norwegian coastal waters and in the Barents Sea where they constitute the most important prey species or many stocks of predators, both of fish , birds and mammals. Due to technical advances the exploitation of the herring increased tremendously in the 1960's and the adult stock was fished out completely in 1970. Some small components of juvenile herring did however survive, and spawned on the traditional spawning grounds in 1973. After spawning the herring did not migrate to the traditional feeding area in the Norwegian Sea, but remained i n Norwegian coastal waters throughout the year. In later years the stock has recovered slowly, but the old traditional migration pattern of herring between the Polar Front area and the Norwegian coast has not yet been retained. It is concluded that the break down of the life cycles of the herring is the prime reason for the recent crisis which has developed in the Barents Sea stocks and fisheries. |
format |
Conference Object |
author |
Hamre, Johannes |
spellingShingle |
Hamre, Johannes Life history and exploitation of the Norwegian spring spawning herring |
author_facet |
Hamre, Johannes |
author_sort |
Hamre, Johannes |
title |
Life history and exploitation of the Norwegian spring spawning herring |
title_short |
Life history and exploitation of the Norwegian spring spawning herring |
title_full |
Life history and exploitation of the Norwegian spring spawning herring |
title_fullStr |
Life history and exploitation of the Norwegian spring spawning herring |
title_full_unstemmed |
Life history and exploitation of the Norwegian spring spawning herring |
title_sort |
life history and exploitation of the norwegian spring spawning herring |
publishDate |
1990 |
url |
http://hdl.handle.net/11250/107569 |
geographic |
Barents Sea Bergen Norwegian Sea |
geographic_facet |
Barents Sea Bergen Norwegian Sea |
genre |
Barents Sea Northeast Atlantic Norwegian Sea |
genre_facet |
Barents Sea Northeast Atlantic Norwegian Sea |
op_relation |
PINRO-IMR Symposium 4 http://hdl.handle.net/11250/107569 |
_version_ |
1766370126936932352 |