Abstract

The use of dynamic age-structured models is becoming more prevalent in environmental assessments. We review these models and discuss the application of density-dependent population models with varying intrinsic rate of increase (r) and carrying capacity (K). Application of these models is described in terms of the model selection process, evaluation of r and K and how they are influenced by habitat suitability, the calculation of habitat suitability indices, and the selection of competition type (scramble vs contest). A short example is given. We conclude that these models offer valuable insight into the understanding of population responses to environmental impacts and mitigation.

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