Title: River Mole derogation fisheries survey : Thames Metropolitan 1989
Author: N. Foulkes
Document Type: Monograph
Abstract:
Seven sites were fished above and below three major STW discharges at Crawley, Horley and Esher, between October 1989 and May 1990. These sites were compared with six almost identical sites completed during the 1986 survey (Ref. CM086). Good quality mixed coarse fisheries were found below Crawley, with fair to good recruitment observed in the dace, roach and gudgeon. The dominant species were roach, dace, chub, gudgeon and eel. Brown trout, brook lamprey, common bream, perch, pike, pumpkinseed, rudd, tench, common carp, bleak and ruffe were also present. The minor species, minnow, bullhead, Stoneloach and three spined stickleback were also observed. During the 1990 survey, fish biomasses were higher than at all comparable 1986 sites. Species diversity has improved with up to fourteen species present at one site.
Publisher: National Rivers Authority
Publication Date: 1989
Publication Place: [Bristol]
Subject Keywords: Rivers; River fisheries; Coarse fishes; Trout; Sewage treatment; Biomass; Improvement
Geographic Keywords: EA South East; Mole; Mole catchment
Taxonomic Keywords: Salmo trutta; Cyprinidae
Extent: 120
Permalink: http://www.environmentdata.org/archive/ealit:3247
Total file downloads: 305
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