Begrenzung des Fischereiaufwandes oder Erhöhung der Mindestmaschenöffnung – Ein Vergleich der Alternativen bei der Dorschfischerei in der Ostsee
The basis for a long-term profitable fishery is a precautionary and environment-compatible use of fish stocks. The fishery management presently models the exploitation through the parameters of fishing mortality and the age at first capture. These two parameters are translated into the technical mea...
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ftoceandocs:oai:aquadocs.org:1834/20735 2023-05-15T16:19:19+02:00 Begrenzung des Fischereiaufwandes oder Erhöhung der Mindestmaschenöffnung – Ein Vergleich der Alternativen bei der Dorschfischerei in der Ostsee Limitations of fishing effort or increase of mesh opening - A comparison of the alternatives for the cod fishery in the Baltic Sea Bethke, Eckhard 2006 application/pdf 13-22 http://hdl.handle.net/1834/20735 https://doi.org/10.3220/Infn53_13-22_2006 de ger http://aquacomm.fcla.edu/2966/ http://www.vti.bund.de 1861-2164 doi:10.3220/Infn53_13-22_2006 http://hdl.handle.net/1834/20735 eckhard.bethke@vti.bund.de http://aquaticcommons.org/id/eprint/2966 1240 2011-09-29 18:05:42 2966 Bundesforschungsanstalt für Fischerei Management Fisheries modelling sustainable fishery Gadus morhua stock management recruitment technical measures Baltic Sea cod article FALSE 2006 ftoceandocs https://doi.org/10.3220/Infn53_13-22_2006 2023-04-06T17:01:42Z The basis for a long-term profitable fishery is a precautionary and environment-compatible use of fish stocks. The fishery management presently models the exploitation through the parameters of fishing mortality and the age at first capture. These two parameters are translated into the technical measures of fishing effort and mesh openings and quotas, which are then used in practice for controlling the fishery. Stock protection can be achieved by reducing the fishing effort, by assigning smaller quotas, by reducing the number of days at sea, or by increasing the mesh opening. The respective protection measures have different effects on the development of the stocks but also on the revenue obtained by the fishery. These alternatives have been examined taking as an example the cod stock in the western Baltic. The optimization goal was the maximization of profit observing at the same time the prerequisites for stock protection according to the precaution approach. For these calculations the same models and data have been used as are beeing used in the stock management of the ACFM of ICES. The response of altered technical measures to the recruitment of cod stock was considered, and a proposal to overcome overfishing of cod in the western Baltic Sea was derived. Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung - Information Fishery Research in 2010. Johann Heinrich von Thünen-Institut, Institut für Seefischerei Article in Journal/Newspaper Gadus morhua IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
German |
topic |
Management Fisheries modelling sustainable fishery Gadus morhua stock management recruitment technical measures Baltic Sea cod |
spellingShingle |
Management Fisheries modelling sustainable fishery Gadus morhua stock management recruitment technical measures Baltic Sea cod Bethke, Eckhard Begrenzung des Fischereiaufwandes oder Erhöhung der Mindestmaschenöffnung – Ein Vergleich der Alternativen bei der Dorschfischerei in der Ostsee |
topic_facet |
Management Fisheries modelling sustainable fishery Gadus morhua stock management recruitment technical measures Baltic Sea cod |
description |
The basis for a long-term profitable fishery is a precautionary and environment-compatible use of fish stocks. The fishery management presently models the exploitation through the parameters of fishing mortality and the age at first capture. These two parameters are translated into the technical measures of fishing effort and mesh openings and quotas, which are then used in practice for controlling the fishery. Stock protection can be achieved by reducing the fishing effort, by assigning smaller quotas, by reducing the number of days at sea, or by increasing the mesh opening. The respective protection measures have different effects on the development of the stocks but also on the revenue obtained by the fishery. These alternatives have been examined taking as an example the cod stock in the western Baltic. The optimization goal was the maximization of profit observing at the same time the prerequisites for stock protection according to the precaution approach. For these calculations the same models and data have been used as are beeing used in the stock management of the ACFM of ICES. The response of altered technical measures to the recruitment of cod stock was considered, and a proposal to overcome overfishing of cod in the western Baltic Sea was derived. Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung - Information Fishery Research in 2010. Johann Heinrich von Thünen-Institut, Institut für Seefischerei |
format |
Article in Journal/Newspaper |
author |
Bethke, Eckhard |
author_facet |
Bethke, Eckhard |
author_sort |
Bethke, Eckhard |
title |
Begrenzung des Fischereiaufwandes oder Erhöhung der Mindestmaschenöffnung – Ein Vergleich der Alternativen bei der Dorschfischerei in der Ostsee |
title_short |
Begrenzung des Fischereiaufwandes oder Erhöhung der Mindestmaschenöffnung – Ein Vergleich der Alternativen bei der Dorschfischerei in der Ostsee |
title_full |
Begrenzung des Fischereiaufwandes oder Erhöhung der Mindestmaschenöffnung – Ein Vergleich der Alternativen bei der Dorschfischerei in der Ostsee |
title_fullStr |
Begrenzung des Fischereiaufwandes oder Erhöhung der Mindestmaschenöffnung – Ein Vergleich der Alternativen bei der Dorschfischerei in der Ostsee |
title_full_unstemmed |
Begrenzung des Fischereiaufwandes oder Erhöhung der Mindestmaschenöffnung – Ein Vergleich der Alternativen bei der Dorschfischerei in der Ostsee |
title_sort |
begrenzung des fischereiaufwandes oder erhöhung der mindestmaschenöffnung – ein vergleich der alternativen bei der dorschfischerei in der ostsee |
publishDate |
2006 |
url |
http://hdl.handle.net/1834/20735 https://doi.org/10.3220/Infn53_13-22_2006 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
eckhard.bethke@vti.bund.de http://aquaticcommons.org/id/eprint/2966 1240 2011-09-29 18:05:42 2966 Bundesforschungsanstalt für Fischerei |
op_relation |
http://aquacomm.fcla.edu/2966/ http://www.vti.bund.de 1861-2164 doi:10.3220/Infn53_13-22_2006 http://hdl.handle.net/1834/20735 |
op_doi |
https://doi.org/10.3220/Infn53_13-22_2006 |
_version_ |
1766005691386953728 |