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  • 1
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    A summary report on juvenile salmonid populations of the River Lune catchment, 1981 to 1991 (2021)
    National Rivers Authority North West Region | Levens, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7786 | 1256 | 2012-02-10 21:37:52 | 7786 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-05
    Description: This report summarises the fisheries electrofishing survey work undertaken on the River Lune, England, in the period 1981-85 and 1991. As part of a long term monitoring programme by the National Rivers Authority, juvenile surveys, with the emphasis on salmonids, have been carried out on the River Lune on a number of occasions since 1981. The latest survey in 1991 now gives the opportunity to assess what, if any, changes have occurred in the juvenile populations across the last 11 years and how future fisheries management may impact on the River Lune as a fishery. The areas of trout and salmon, fry and parr production will be considered in detail, as will adult trout populations. Water quality issues will be mentioned briefly as will habitat issues, where they are deemed to be important in affecting fish densities.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Lune Catchment ; Salmo salar ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Fry ; Distribution ; Electric fishing ; Population dynamics ; Biological production ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 27
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  • 2
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    A report on the population structure of adult salmon and sea trout in the River Lune using scale samples - with reference to historical data. (2021)
    National Rivers Authority | Levens, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7931 | 1256 | 2012-02-10 21:29:29 | 7931 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-26
    Description: During 1993, a comprehensive data set of scale readings, length and weight measurements was established for migratory salmonids on the River Lune. This information was collected using three methods of fish capture: 1. The Lune estuary commercial nets. 2. River Lune Forge weir fish trap. 3. River Lune rod catch scale returns. Additional information was contributed by the Kent, Leven and Duddon rod and commercial fisheries. The data shows that the salmon stock in 1993 was dominated by two year old smolts. This varies from year to year.The sea trout population displays a normal population curve in terms of numbers of fish in each age and weight class. The growth rate of salmon and sea trout is very similar even though salmon have the benefit of high sea feeding.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Lune Catchment ; Salmo salar ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Kelt ; Stocking density ; Distribution ; Spawning populations
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 62
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  • 3
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    A working guide to the assessment, implementation and post project monitoring of fisheries habitat improvement schemes in South Cumbria (2021)
    National Rivers Authority North West | Carlisle, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8063 | 1256 | 2012-02-24 12:35:43 | 8063 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: Due to changes in land use over the last century, the physical nature of many streams and rivers in the British Isles has probably changed. In some cases this change may be large for example as a result of flood defence schemes and is easily observed, whilst in other cases altered land use, farming, forestry or urbanization may have resulted in more subtle changes to river features. This working guide draws together a way of assessing habitat in any stream or river and determine sites or reaches on the assessed watercourse that may benefit from habitat improvement schemes. It will determine a method of measuring existing habitat in a broad sense, whilst referring to R and D studies currently being undertaken in this area. A method of prioritising any proposed habitat restoration work will be suggested. The limitations of fisheries improvement schemes in terms of cross functional acceptance (flood defence and conservation) will be examined along with suggested proposals for some example watercourses. The need for pre and post enhancement monitoring will be discussed as will the requirement for maintenance programs on schemes. Finally methods for determining the cost benefits of small schemes will be examined, compared to other currently used enhancement strategies. This will allow small scale revenue schemes to be used to back up pre project cost benefit analysis as required in future capital submissions.
    Description: Environment Agency Archives North West
    Keywords: Conservation ; Fisheries ; Limnology ; England ; Cumbria ; River fisheries ; Fishery regulations ; Habitat improvement (biological) ; Environmental degradation ; Salmon fisheries ; Classification
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 75
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