Economic impacts of changes in population dynamics of fish on the fisheries in the Barents Sea
AbstractA bioeconomic simulation model of the two interacting fish species cod (Gadus morhua) and capelin (Mallotus villosus) and their fisheries is presented and applied to assess the consequences of changes in the population dynamics of these important fish stocks in the Barents Sea. In each scenario, the population dynamics of the fish species are changed by an external reduction of the reproductive rates and/or the carrying capacities. The stock sizes and landings of fish are calculated for each fishing period and the net present values of profits from fishing are determined for time periods prior to and after the change in population dynamics. Results show that reduced growth rates or carrying capacities both lead to lower stock levels and consequently to smaller catch sizes. There is only a small short-term economic impact on the fisheries but the long-term consequences are quite pronounced. In some cases, a higher fishing activity in the first few years after the change in population dynamics causes harvest sizes to remain stable despite diminishing stock sizes. This stabilizes the returns from fishing in the short run but veils the apparent negative long-term impact on the fisheries resulting from adversely affected stock dynamics.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoPaper provided by Research unit Sustainability and Global Change, Hamburg University in its series Working Papers with number FNU-30.
Length: 26 pages
Date of creation: May 2003
Date of revision: May 2003
Publication status: Published, ICES Journal of Marine Science, 63 (4), 611-625
Barents Sea; bioeconomic modeling; capelin; cod; population dynamics;
Find related papers by JEL classification:
- Q22 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Fishery
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Duncan Knowler, 2002. "A Review of Selected Bioeconomic Models with Environmental Influences in Fisheries," Journal of Bioeconomics, Springer, vol. 4(2), pages 163-181, May.
- Sumaila, U.R., 1997. "Strategic Dynamic Interaction: The Case of Barents Sea Fisheries," Norway; Department of Economics, University of Bergen 172, Department of Economics, University of Bergen.
- Anthoff, David & Tol, Richard S.J., 2010.
"On international equity weights and national decision making on climate change,"
Journal of Environmental Economics and Management,
Elsevier, vol. 60(1), pages 14-20, July.
- Anthoff, David & Tol, Richard S. J., 2011. "On International Equity Weights and National Decision Making on Climate Change," Papers RB2010/4/2, Economic and Social Research Institute (ESRI).
- David Anthoff & Richard S.J. Tol, 2007. "On International Equity Weights And National Decision Making On Climate Change," Working Papers FNU-127, Research unit Sustainability and Global Change, Hamburg University, revised Feb 2007.
- David Anthoff & Richard S. J. Tol, 2008. "On International Equity Weights and National Decision Making on Climate Change," CESifo Working Paper Series 2373, CESifo Group Munich.
- David Anthoff & Richard S.J. Tol, 2007. "On International Equity Weights and National Decision Making on Climate Change," Working Papers 2007.55, Fondazione Eni Enrico Mattei.
- P. Michael Link & Richard S.J. Tol, 2004. "Possible Economic Impacts of a Shutdown of the Thermohaline Circulation: an Application of FUND," Working Papers FNU-42, Research unit Sustainability and Global Change, Hamburg University, revised Apr 2004.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Uwe Schneider).
If references are entirely missing, you can add them using this form.