Title: Contribution of small streams to potential fish production in the Conwy catchment
Author: N.J. Milner
Author: M.D. Scott
Author: A. Valne
Document Type: Monograph
Abstract:
Electro-fishing surveys of rivers and streams in the Conwy River catchment have been carried out for a number of years as part of a programme Co monitor fisheries impact of the Conwy A55 tunnel. Most of these electro-fishing sites are on relatively large streams (most widths greater than 3 m) and the relative importance of small streams is less well known. Very small streams (less than 1 m) may not maintain a resident trout population, but may nevertheless be important nursery areas or sources of invertebrates supporting downstream populations. This study was undertaken to estimate the total length and number of small streams in the whole Conwy catchment. In addition to setting the monitoring programme into a catchment concept, the results are of interest in establishing the relative importance of minor streams. They also highlight the need to review means of improving environmental protection of these waters. Which do not normally come within standard classification or reporting schemes.
Publisher: National Rivers Authority
Publication Date: 1991
Publication Place: Cardiff
Subject Keywords: Rivers; Streams; Fishes; Productivity; Food chains; Invertebrates
Geographic Keywords: Wales; Conwy; Conwy and Clwyd catchment
Taxonomic Keywords: Salmo trutta
Extent: n.p. [9]
Permalink: http://www.environmentdata.org/archive/ealit:3082
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