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Title: Regional juvenile salmonid monitoring programme : annual report 1991
Author: National Rivers Authority Welsh Region
Document Type: Monograph
A programme of juvenile salmonid stock monitoring was undertaken during 1991, the seventh year in succesion that such a study has been carried out. The data collected is used to form baseline information on the status of juvenile stocks at both a catchment and regional level. The data can also be used to monitor any changes to other environmental factors both natural and man-made. As a consequence of the large number of catchments in the Welsh Region (over 50) covering 20,000 km of rivers and streams of which approximately a third are available to migratory salmonids, and given limited resources, not all catchments can be sampled in one year. Therefore, whilst several 'major' catchments are sampled on an annual basis the 'minor' catchments are sampled under a rolling programme.
Publisher: National Rivers Authority
Publication Date: 1992
Publication Place: Cardiff
Subject Keywords: Fishery managementSalmon fisheriesTroutJuvenilesStock assessmentMonitoringAnnual reports
Geographic Keywords: Wales
Taxonomic Keywords: Salmonidae
Extent: n.p. [173]
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