Interpretation of a modified linear model of catch-per-unit-effort data in a spatially-dynamic fishery

The spatial and temporal dynamics of populations of migratory fish and associated fishing patterns give rise to data from which it is difficult to obtain clear signals about population size and distribution. Use of modified General Linear Models (GLMs) for obtaining information about the population is explained and demonstrated by way of example. Two modified GLMs for obtaining relative indices of abundance for migratory pelagic fish are presented. Crown Copyright