Optimal Management of Conflicting Species: Grey Seal (Halichoerus Grypus) and Baltic Salmon (Salmo Salar L.)
Conservation goals and resource use can easily conflict when externalities exist. This is the case in the Baltic Sea with grey seal (Halichoerus grypus) and Atlantic salmon (Salmo salar). Both of the species have been defined as critically endangered in the late 20th century but due to conservation...
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International Institute of Fisheries Economics and Trade
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ftoregonstate:ir.library.oregonstate.edu:3t945r65g 2024-04-14T08:09:11+00:00 Optimal Management of Conflicting Species: Grey Seal (Halichoerus Grypus) and Baltic Salmon (Salmo Salar L.) Holma, Maija Kulmala, Soile Lindroos, Marko https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/3t945r65g English [eng] eng unknown International Institute of Fisheries Economics and Trade https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/3t945r65g Copyright Not Evaluated Endangered species Gray seal Conservation of natural resources Atlantic salmon Fishery Management Bycatch Discard Selectivity Fisheries Economics Other ftoregonstate 2024-03-21T15:52:45Z Conservation goals and resource use can easily conflict when externalities exist. This is the case in the Baltic Sea with grey seal (Halichoerus grypus) and Atlantic salmon (Salmo salar). Both of the species have been defined as critically endangered in the late 20th century but due to conservation schemes, harvest controls and enhanced environmental quality the situation of both species has ameliorated. Grey seal population has been growing quickly after 1980s and is now regarded as near threatened whereas salmon is still regarded as endangered. The disadvantages towards the professional fishing have been growing along with the increasing grey seal population in the Northern Baltic. Catch losses (eaten and injured fish) and broken fishing gears have been identified as the most common seal induced damages to the fishery. Fishery, however, poses a threat to grey seals that are caught as by-catch. To these ends, we construct an age-structured bioeconomic model accounting for both species. The model observers commercial and recreational salmon fisheries and the damages caused by seals especially to commercial fishery. Further, the model accounts for the non-use and potential use value of increasing seal stock. Numerical methods are used to solve the socially optimal number of seals and optimal harvest allocation between commercial and recreational salmon fisheries. Other/Unknown Material Atlantic salmon common seal Salmo salar ScholarsArchive@OSU (Oregon State University) |
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ScholarsArchive@OSU (Oregon State University) |
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ftoregonstate |
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English unknown |
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Endangered species Gray seal Conservation of natural resources Atlantic salmon Fishery Management Bycatch Discard Selectivity Fisheries Economics |
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Endangered species Gray seal Conservation of natural resources Atlantic salmon Fishery Management Bycatch Discard Selectivity Fisheries Economics Holma, Maija Kulmala, Soile Lindroos, Marko Optimal Management of Conflicting Species: Grey Seal (Halichoerus Grypus) and Baltic Salmon (Salmo Salar L.) |
topic_facet |
Endangered species Gray seal Conservation of natural resources Atlantic salmon Fishery Management Bycatch Discard Selectivity Fisheries Economics |
description |
Conservation goals and resource use can easily conflict when externalities exist. This is the case in the Baltic Sea with grey seal (Halichoerus grypus) and Atlantic salmon (Salmo salar). Both of the species have been defined as critically endangered in the late 20th century but due to conservation schemes, harvest controls and enhanced environmental quality the situation of both species has ameliorated. Grey seal population has been growing quickly after 1980s and is now regarded as near threatened whereas salmon is still regarded as endangered. The disadvantages towards the professional fishing have been growing along with the increasing grey seal population in the Northern Baltic. Catch losses (eaten and injured fish) and broken fishing gears have been identified as the most common seal induced damages to the fishery. Fishery, however, poses a threat to grey seals that are caught as by-catch. To these ends, we construct an age-structured bioeconomic model accounting for both species. The model observers commercial and recreational salmon fisheries and the damages caused by seals especially to commercial fishery. Further, the model accounts for the non-use and potential use value of increasing seal stock. Numerical methods are used to solve the socially optimal number of seals and optimal harvest allocation between commercial and recreational salmon fisheries. |
format |
Other/Unknown Material |
author |
Holma, Maija Kulmala, Soile Lindroos, Marko |
author_facet |
Holma, Maija Kulmala, Soile Lindroos, Marko |
author_sort |
Holma, Maija |
title |
Optimal Management of Conflicting Species: Grey Seal (Halichoerus Grypus) and Baltic Salmon (Salmo Salar L.) |
title_short |
Optimal Management of Conflicting Species: Grey Seal (Halichoerus Grypus) and Baltic Salmon (Salmo Salar L.) |
title_full |
Optimal Management of Conflicting Species: Grey Seal (Halichoerus Grypus) and Baltic Salmon (Salmo Salar L.) |
title_fullStr |
Optimal Management of Conflicting Species: Grey Seal (Halichoerus Grypus) and Baltic Salmon (Salmo Salar L.) |
title_full_unstemmed |
Optimal Management of Conflicting Species: Grey Seal (Halichoerus Grypus) and Baltic Salmon (Salmo Salar L.) |
title_sort |
optimal management of conflicting species: grey seal (halichoerus grypus) and baltic salmon (salmo salar l.) |
publisher |
International Institute of Fisheries Economics and Trade |
url |
https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/3t945r65g |
genre |
Atlantic salmon common seal Salmo salar |
genre_facet |
Atlantic salmon common seal Salmo salar |
op_relation |
https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/3t945r65g |
op_rights |
Copyright Not Evaluated |
_version_ |
1796306659657646080 |