Juvenile salmon investigations River Wenning catchment 1981-86

Ingersent, B (1987) Juvenile salmon investigations River Wenning catchment 1981-86. Preston, UK, North West Water, 31pp.

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Abstract

As part of the River Lune juvenile salmonid investigation, a number of sites on the River Wenning catchment were electrofished annually from 1981 - 1985. Particularly low Salmon parr populations were evident for much of the Wenning catchment which has caused some concern. All the Wenning catchment electrofishing results are reported in this paper and comparisons are made with designated groups of sites on the remainder of the Lune catchment. These groups of sites are: River Lune and tributaries, upstream Tebay, Upper Middle Lune, Lower Middle Lune, Lower Lune, Birk & Borrow Becks, Chapel & Crosdale Becks, Rawthey system, Barbon & Leek Becks and the Greta system. The general scarcity of Salmonids in large sections of the main river Wenning probably reflects the apparent limited natural spawning areas on the catchment. Details of Salmon fry and ova planting on the Wenning catchment since 1981 have been collated and whilst survival through the 0+ stage appears to be quite good, recruitment to the 1++ stage appears to be poor. Water quality does not appear to be responsible for the very low salmonid densities at some main river sites but is possibly a factor in apparently preventing any Salmon run in Keasden Beck. Recommendations for future Fisheries and Biological work are given.

Item Type: Monograph or Serial Issue
Title: Juvenile salmon investigations River Wenning catchment 1981-86
Personal Creator/Author:
CreatorsEmail
Ingersent, B
Number of Pages: 31
Date: 1987
Publisher: North West Water
Place of Publication: Preston, UK
Funders: Environment Agency Archives North West
Contact Email Address: dis@fba.org.uk
Issuing Agency: Environment Agency, UK (Freshwater Biological Association)
Uncontrolled Keywords: England; Lune Catchment; Salmo salar; Rivers; Water quality; River fisheries; Salmon fisheries; Electric fishing; Stocking density; Fry
Subjects: Ecology
Fisheries
Limnology
Item ID: 7780
Depositing User: Hardy B Schwamm
Date Deposited: 10 Feb 2012 21:43
Last Modified: 21 Feb 2012 15:39
URI: http://aquaticcommons.org/id/eprint/7780

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