Abstract
It is common knowledge among marine biologists that big fish eat smaller fish and that the smaller fish eat even smaller fish, crustaceans and plankton. Theoretical biologists started studying ecological systems by means of mathematical models many years ago (e.g. Lotka,1925 and Volterra,1928), and studies of single species models are even older (e.g. Verhulst, 1838). The breakthrough in the use of mathematical models in applied marine-biological research came with the Baranov-Beverton- Holt (BBH) model and the Schaefer-model in the 1950s. The BBH model is a single species model in which the relationship to other species is not explicitly formulated. However, in a way these relations are implicitly taken care of. The constant mortality rate includes mortality due to predation by other species; the growth rate and recruitment to the fishable stock implicitly depend on availability of prey and on the presence of competitors.
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Eide, A., Flaaten, O. (1998). Bioeconomic Multispecies Models of the Barents Sea Fisheries. In: Rødseth, T. (eds) Models for Multispecies Management. Contributions to Economics. Physica-Verlag HD. https://doi.org/10.1007/978-3-642-99793-8_6
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DOI: https://doi.org/10.1007/978-3-642-99793-8_6
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