A manual of mathematical techniques for linefish assessment

Abstract

This manual contains an expanded version of material presented at a linefish population dynamics workshop held in Cape Town in February 1987. First the statistical procedures for fitting curves to data are discussed. The standard single-recapture methods, hook selectivity, and multi-species aspects are discussed briefly. The topic are presented in the context of making scientifically based recommendation for management given limited data, as is usually the case for a recreational line fishery. A checklist of standards analysis is suggested, many of which may be implemented using the microcomputer package PC-yield. A number of the analysis techniques are illustrated by application to data for the natal elf resource.