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Field studies in which age-specific survivorship and fecundity are measured can provide data for the validation of laboratory studies conducted to assess the effects of toxic materials on aquatic species. Comparison of the variability of age-specific survivorship and fecundity in polluted versus nonpolluted areas would provide insight into the consequences of pollution at the population level. Techniques which permit prediction of population structure and growth from age-specific survivorship and fecundity schedules are described. These techniques include the life table and the Leslie matrix. Examples of population studies in which these techniques may be applied are given.
survivorship, fecundity, life table, Leslie matrix, field study, test validation, ecosystems, population, aquatic toxicology, hazard assessment
Toxicologist, Health, Safety, and Environment Department, National Distillers and Chemical Corporation, Cincinnati, OH