Research article - Peer-reviewed, 2022
Joint management of marine mammals and a fish species: The case of cod and grey seals in the Nordic-Baltic Sea countriesBlomquist, Johan; Jensen, Frank; Waldo, Staffan; Flaaten, Ola; Holma, Maija K.
AbstractIn this paper, we present a simple theoretical, steady-state equilibrium, predator-prey model for the joint management of marine mammals and a fish species. As an empirical case, we choose cod and grey seals in the Nordic-Baltic Sea countries, and several benefits and costs related to the latter are considered. We show that the optimal grey seal population is much lower than the actual population, and this result is robust to variations in relevant parameter values. This result can be explained by the fact that the profit from harvesting cod is much higher than the net benefits from grey seals.
Keywordscod; grey seals; joint management; Nordic-Baltic Sea Countries
Published inNatural Resource Modeling
2022, volume: 35, number: 4, article number: e12341
University of Copenhagen
UiT The Arctic University of Tromso
Holma, Maija K.
University of Helsinki
UKÄ Subject classification
Fish and Wildlife Management
URI (permanent link to this page)