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The aim of this research was to assess the extent and severity of oestrogenic effects in fish in rivers that receive sewage effluent and to evaluate links to water quality and effiuent inputs.
A project which has been carried out to evaluate the use of semi quantitative methods for fish stock assessment for use in the Fisheries Classification Scheme.
A literature review was undertaken, to consider existing knowledge concerning the occurrence, causes and implications of migration by coarse fish (non-salmonid freshwater fish) occurring in England and Wales.…
The report assesses the performance of a hydroacoustic counter, used to enumerate the passage of adult salmon in a river
A project to determine an effective method for collecting data on catches of migratory salmonids and to develop techniques for studying population size.
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