Fishing
Fishing
This chapter exploits the previous chapter's demographic model to make impact assessment of fishing and calculate fisheries reference points for fish stocks with asymptotic sizes of 10 g, 333 g, and 10 kg. The three asymptotic sizes span the variation in fish life histories from small and short-lived forage fish species, such as sardine or sprat; to small pelagic fish, such as herring or mackerel; to large demersal species, such as cod or saithe. When fishing is added to the demographic model, the model has to be solved numerically. To complement the numerical results, the chapter first develops a very simplified analytical model. It then goes on to formulate a complete theoretical framework that can be applied to make ecological impact assessments of fishing a single stock.
Keywords: demographic model, fish stocks, impact assessment, theoretical framework, ecological impact, fish life histories
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