[Vid-stund] Claire Armstrong, prófessor í fiskihagfræði:Fishing on cold water coral reefs: A bioeconomic model of habitat-fishery connections. Á þriðju hæð í Odda kl. 12 á föstudag.

[Sif Sigfúsdóttir]

 Hagfræðideild býður til málstofu í hádeginu næstkomandi föstudag 21. nóv. 
 í kaffistofunni á 3ju hæð í Odda, klukkan 12:00.  Málshefjandi er 

Claire Armstrong, prófessor í fiskihagfræði frá Norwegian College of 
Fishery Science, University of Tromsø, Norway 


Efni fyrirlestursins er: 
Fishing on cold water coral reefs: 
A bioeconomic model of habitat-fishery connections. 
Úrdráttur:
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. 
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