Benthic Life Histories: Summary and Future Needs

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Abstract
The symposium indicated many ways in which greater knowledge of benthic life histories can be used to develop and improve techniques such as sampling, taxonomic methods, and bioassays. Benthic organisms' diet and physical environment, factors variable in nature, were shown to be capable of modifying certain life history features such as growth rate and voltinism. The lack of accumulated life history data and the need to tailor sampling schedules to life history events were commonly identified elements in the symposium. Future research needs included (1) basic data on benthic life history, (2) improved taxonomy of immature benthic invertebrates, and (3) understanding the entire life history of an organism in relation to the seasonal progression of its environment. Management implications of benthic life history information included more applicable data from long-term bioassays on all life history stages, and improved management of stream fisheries through habitat alteration to manipulate benthic production. Key words: life history, benthos, symposium

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