The Role of Food Web Interactions in Multispecies Fisheries Management : Bio-economic Analysis of Salmon, Herring and Grey Seal in the Northern Baltic Sea

Show full item record



Permalink

http://hdl.handle.net/10138/332278

Citation

Lai , T-Y , Lindroos , M , Groenbaek , L & Romakkaniemi , A 2021 , ' The Role of Food Web Interactions in Multispecies Fisheries Management : Bio-economic Analysis of Salmon, Herring and Grey Seal in the Northern Baltic Sea ' , Environmental and Resource Economics , vol. 79 , no. 3 , pp. 511-549 . https://doi.org/10.1007/s10640-021-00571-z

Title: The Role of Food Web Interactions in Multispecies Fisheries Management : Bio-economic Analysis of Salmon, Herring and Grey Seal in the Northern Baltic Sea
Author: Lai, Tin-Yu; Lindroos, Marko; Groenbaek, Lone; Romakkaniemi, Atso
Contributor: University of Helsinki, Environmental and Resource Economics
University of Helsinki, Helsinki Institute of Sustainability Science (HELSUS)
Date: 2021-07
Language: eng
Number of pages: 39
Belongs to series: Environmental and Resource Economics
ISSN: 0924-6460
URI: http://hdl.handle.net/10138/332278
Abstract: Multispecies bio-economic models are useful tools to give insights into ecosystem thinking and ecosystem-based management. This paper developed an age-structured multispecies bio-economic model that includes the food web relations of the grey seal, salmon, and herring, along with salmon and herring fisheries in the Baltic Sea. The results show that the increasing seal population influences salmon fisheries and stock, but the impacts on the harvest are stronger than on the stock if the targeted management policies are obeyed. If seal population growth and a low herring stock occur simultaneously, the salmon harvest could face a serious threat. In addition, scenarios of the multispecies management approach in this paper reveal a benefit that our model can evaluate the performance of different fisheries with identical or different management strategies simultaneously. The results show the most profitable scenario is that both fisheries pursuit aggregated profits and reveal a trade-off between herring fisheries and salmon fisheries. Our model indicates that the herring harvest level and the approaches to managing herring fisheries can influence the performance of salmon fisheries. The study also demonstrates a way to develop a multispecies bio-economic model that includes both migratory fish and mammalian predators.
Subject: 1181 Ecology, evolutionary biology
512 Business and Management
Bio-economic modeling
Dynamic optimization
Food web interaction
Grey seal (Halichoerus grypus)
Herring (Clupea harengus)
Multiobjective
Multispecies management
Salmon (Salmo salar)
ATLANTIC SALMON
HALICHOERUS-GRYPUS
BOTHNIAN SEA
PARR DENSITY
SALAR L.
SMOLT
PREDATION
SURVIVAL
TUNA
SIZE
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
Lai2021_Article_TheRoleOfFoodWebInteractionsIn.pdf 3.775Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record