Fishing on cold water coral reefs : A bioeconomic model of habitat-fishery connections
This paper applies a bioeconomic model in order to study different interactions between a harvested renewable resource and a non-renewable resource without commercial value that is negatively affected by the harvesting activity. This enables the analysis of for instance cold water coral habitats and their importance to commercial fish species. The fish is harvested either in a manner that does not damage coral, such as stationary gear, or in a destructive fashion, such as bottom trawling. We find that when coral is a preferred or essential habitat, the optimal steady-state fish stock is no longer independent of the habitat level, i.e. optimum optimorum values determine the optimal stationary gear harvest rate and how much habitat should optimally be preserved. Such optimum optimorum values will vary according to the type of habitat-fishery connection, and some bottom trawling may be optimal for some periods of time. Our findings extend upon the underlying assumption of a constant habitat quality of bioeconomic models when destructive fishing methods are involved and a habitat-fishery connection exists.
ForlagUniversitetet i Tromsø
University of Tromsø
SerieWorking Paper Series in Economics and Management, No. 06/08, November 2008
Følgende lisensfil er knyttet til denne innførselen:
Viser innførsler relatert til tittel, forfatter og emneord.
Dyspriani, Polite (Master thesis; Mastergradsoppgave, 2007-05-29)Shrimp world production in the last few years has shown very high growth rates. It is marked by an increasing of production volume, and by shifting from capture to aquaculture fisheries within the production system. This has occurred mostly regarding to the brackish water pond. For some years, the government has had to face hard choices in order to ensure shrimp aquaculture developed sustainable. ...
Karlsen, Kine Mari (Doctoral thesis; Doktorgradsavhandling, 2011-08-26)The purpose of this thesis was to study granularity and its importance for traceability in seafood supply chains. The following hypothesis was applied in this thesis: The implementation of traceability of seafood is affected by the granularity level of the traceable units. Three sub-tasks were carried out to test the hypothesis: 1) identify critical traceability points (CTPs) of seafood products, ...
Nolde Nielsen, Kåre (Doctoral thesis; Doktorgradsavhandling, 2008-11-21)What is the relationship between science and politics? What should it be? How are their respective roles conceived and acted out in practice? Should science and politics be clearly separated? How? Are there cases in which they can be usefully mixed? What cases are those, and are there some ways of mixing that are better than others? This project explores such questions by examining relationships ...