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Other Economics

Bio-economic modeling and cost-benefit analysis

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Full-Text Articles in International Economics

Bio-Economic Evaluation Of Implementing Trawl Fishing Gear With Different Selectivity, Lone Grønbæk Kronbak, J. Rasmus Nielsen, Ole A. Jørgensen, Niels Vestergaard Dec 2008

Bio-Economic Evaluation Of Implementing Trawl Fishing Gear With Different Selectivity, Lone Grønbæk Kronbak, J. Rasmus Nielsen, Ole A. Jørgensen, Niels Vestergaard

Niels Vestergaard

The paper develops a biological-economic evaluation tool to analyse the consequences for trawl fishers of implementing more selective fishing technologies. This is done by merging a dynamic biological population model and an economic cost–benefit evaluation framework to describe the consequences for the fish stocks, fishermen and society. The bio-economic evaluation is applied to the case of the Danish trawl fishery in Kattegat and Skagerrak, which experiences a high level of discards and bycatches of several species. Four different kinds of selectivity scenarios are evaluated in comparison with a baseline. The results from the evaluation are indicators for the consequences ...


Ecological Benchmarking To Explore Alternative Fishing Schemes To Protect Endangered Species By Substitution : The Danish Demersal Fishery In The North Sea, Niels Vestergaard, Jens Kjærsgaard, Kristiaan Kerstens Dec 2008

Ecological Benchmarking To Explore Alternative Fishing Schemes To Protect Endangered Species By Substitution : The Danish Demersal Fishery In The North Sea, Niels Vestergaard, Jens Kjærsgaard, Kristiaan Kerstens

Niels Vestergaard

The cod stock in the North Sea is threatened by overexploitation. To recover this fishing stock, pressure needs to be reduced. This implies that catch compositions with small amounts of cod are preferred by public policy makers. The present analysis assesses the technological efficiency of fishing trips in terms of the substitution possibilities away from cod by considering landings of cod as an undesirable output. A conservative non-parametric frontier technology approach imposing minimal assumptions and based on directional distance functions is applied to explore alternative fishing activities for Danish gill netters operating in the North Sea with the goal of ...


Measures Of Welfare Effects In Multiproduct Industries: The Case Of Multispecies Individual Quota Fisheries, Niels Vestergaard Dec 1998

Measures Of Welfare Effects In Multiproduct Industries: The Case Of Multispecies Individual Quota Fisheries, Niels Vestergaard

Niels Vestergaard

A framework is developed to measure the welfare effects of individual quota reforms in multiproduct industries using the multimarket welfare measure techniques suggested by Just, Hueth, and Schmitz (1982) and the concept of virtual price in the production theory literature (Neary 1995; Squires and Kirkley 1996). Under joint in input production it shown that quasirent under a single quota can be measured by the producer surplus either in the output market for quota output or in the quota market. Under multiple quotas the welfare effects of quota policies can be measured in one of the quota markets using inverse derived ...


Bæredygtig Udnyttelse Af Fornybare Ressourcer: Torskefiskeriet Ved Færøerne, Niels Vestergaard Dec 1994

Bæredygtig Udnyttelse Af Fornybare Ressourcer: Torskefiskeriet Ved Færøerne, Niels Vestergaard

Niels Vestergaard

The Faroe Islands cod fishery is analyzed for the period 1985-1992. It is shown that an approximately optimal and implementable fishery policy based on sustainability have increased the gross national income in the fishery by about 20%. This loss is due to an inoptimal organization of the fishery during that period combined with a very low cod stock at the end of 1992, which means reduced future catch possibilities. that the fishing capacity could have been reduced by about 1/3. The policy of sustainability is applied to the current situation in the fishery, and it is shown that the ...