The juvenile salmonid populations of the River Lune catchment, 1981 to 1985

Farooqi , M.A. and Aprahamian , M.W. (1993) The juvenile salmonid populations of the River Lune catchment, 1981 to 1985. Warrington, UK, National Rivers Authority North West Region, 143pp. (NRA/NW/FTR/93/1).

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Abstract

The aim of this study was to assess the status of the juvenile salmonid populations of the River Lune and its tributaries. There was special emphasis on juvenile salmon stocks in view of the implementation of a net limitation order in 1980. The number of licensed instruments were reduced as follows: (1) Drift, hang or whammel nets - from 12 to 10 (2) Draft or seine nets - from 3 to 1 (3) Heave or haaf nets - from 4 6 to 2 6 For the purpose of this report, the River Lune system has been divided into 13 subcatchments and these are examined with a view to detecting any trends in the data such as subcatchment productivity, partitioning between salmon and trout nursery streams, and whether the restrictions on salmon fishing had any discernible effects on juvenile salmon productivity. The effect of flow and instream obstructions on salmonid densities are also investigated as these have been shown to be important factors affecting abundance. Throughout the study period a programme of enhancement stocking took place primarily with salmon ova and fry. The possible impact of this on the results of the surveys has been assessed. The distribution and abundance of juvenile salmon was found to be relatively consistent in each of the 13 subcatchments studied over the 1981-1985 period.

Item Type: Monograph or Serial Issue
Title: The juvenile salmonid populations of the River Lune catchment, 1981 to 1985
Personal Creator/Author:
CreatorsEmail
Farooqi , M.A.
Aprahamian , M.W.
Number of Pages: 143
Date: April 1993
Publisher: National Rivers Authority North West Region
Place of Publication: Warrington, 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; Salmo trutta; Rivers; River fisheries; Salmon fisheries; Fishery surveys; Fry; Eggs; Distribution; Abundance; Population density; Population dynamics; Spawning
Subjects: Ecology
Fisheries
Limnology
Item ID: 7784
Depositing User: Hardy B Schwamm
Date Deposited: 10 Feb 2012 21:39
Last Modified: 10 Feb 2012 21:39
Related URLs:
URI: http://aquaticcommons.org/id/eprint/7784

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