Abstract
Habitat classification schemes attempt to predict the types of life-history patterns that should be selected for in particular habitats. Several such schemes have been proposed, all of which are based on habitat characteristics relating to productivity, disturbance and/or biotic interactions. As environmental pollution may impact one or all of these habitat characteristics, it should act as a selection pressure resulting in life-history modification and could therefore be used to test predictions arising from life-history theory. Two populations of the freshwater isopod, Asellus aquaticus (L.), separated by an effluent discharge from a disused coal mine, were studied to investigate whether they had adapted to the pollution by modifying their life history in accordance with the predictions of life-history theory
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