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  • Limnology  (44)
  • Cell & Developmental Biology
  • National Rivers Authority North West  (30)
  • Preston, UK  (22)
  • 1
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    The effect of abstraction on fish and fisheries (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10972 | 1256 | 2013-03-26 13:52:57 | 10972 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-25
    Description: This is the report on the Effect of Abstraction on Fish and Fisheries presented at the 24th IFM Annual Study Course, The Changing Face of Fisheries September 1993 at Cardiff.Water is abstracted from rivers for a wide variety of uses and causing potential for conflicts between abstracters, fisheries and conservation interests, especially during natural low flows. It looks at the potential effects that flow reduction has over various stages of salmonids at various stages of their life history. The flow at the time of smolt migration has been found to be positively correlated with the number of returning adults, and flow is considered to be one of the most important environmental factors inducing salmonids to enter fresh water and ascend rivers. The importance of time series data on fish stocks and angling success together with models which ultimately relate discharge to standing stock are discussed in relation to the setting up of Minimum Acceptable Flows.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; National River Authority ; Water abstractions ; Environmental assessment ; Population dynamics ; Salmonids ; Minimum Acceptable Flows ; Migratory Fish
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 18
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  • 2
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    The Kent estuary 1992 surveys. Summary of results (2021)
    National Rivers Authority North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11099 | 1256 | 2013-04-03 15:27:43 | 11099 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the Kent estuary 1992 surveys: Summary of results produced by the National Rivers Authority in 1993. The report summarises routine and baseline water quality surveys carried out on the Kent estuary during 1992. Baseline surveys are designed to respond to regional, national, and European requirements. During 1992 baseline surveys were carried out in June and December. Unfortunately, in June, samples could only be taken from stations 3, 7 and 8. For ease of interpretation the results have been presented in graph form, including the maximum and minimum parameter concentration and the appropriate Environmental Quality Standards (EQS). The parameters measured in this survey were physical parameters (temperature, BOD, dissolved oxygen, Ph, salinity, conductivity); nutrients (ammonia, phosphate, and nitrate); metals (Mercury, Nickel, Arsenic, Cadmium, Chromium, Cooper, Boron, and Zinc) and organic compounds.
    Description: Environment Agency Archives North West
    Description: + tables, figures and appendices
    Keywords: Ecology ; Limnology ; Management ; England ; Kent estuary ; Arnside ; Estuary ; Coastal waters ; Environmental survey ; Water quality ; Environmental assessment ; Bathing waters ; EQS
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 2
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  • 3
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    River Ehen and Calder sub catchment Management Plan (2021)
    National Rivers Authority North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10955 | 1256 | 2013-03-26 13:56:21 | 10955 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-25
    Description: This is the River Ehen and Calder sub catchment management plan: Consultation Report September 1993 produced by the National Rivers Authority (NRA) North West Region in 1993. The report focuses on the management plan of both River Catchments Ehen and Calder, in North West England, UK. The Catchment Management Plan (C.M.P.) enabled the NRA to summarise the status of the catchment, identify the main issues and present its vision of the future. It provides a strategic policy framework for its Management and influences decision making leading to improvements in the water environment. The report contains sections on Description of Catchment, Catchment uses by NRA function, Target and objectives of the plan, Summary of Issues and Catchment Issues. The section on description of Catchment includes a general description, Transport, Geology, major services, summary of key details, area, topography, administrative details, main towns and population, water quality Sewage Treatment Works Trade effluent discharges, Water Resources, flood defence and land drainage and Fisheries.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Ehen ; Calder ; Inland waters ; Coastal waters ; Rivers ; Freshwater lakes ; Freshwater pollution ; Migratory species ; Fish stocks ; Fisheries ; Nature conservation ; Water management ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 58
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  • 4
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    Report upon the commercial fisheries in the Lancashire River Authority Area and their effect upon rod angling and spawning stock in the rivers and particularly the River Lune (2021)
    Lancashire River Authority | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7730 | 1256 | 2012-02-09 16:00:20 | 7730 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-05
    Description: The stock of salmon in any river is largely dependent upon the escapement of sufficient fish to ensure that an adequate quantity of ova is deposited and full use is made of all suitable spawning areas. At the present time, no accurate information is available on the numbers of fish entering rivers. Therefore, catch returns provide valuable information on fish stocks.This report summarises the catch returns for salmon in the Lancashire River Authority in the North of England for the years 1960-1964. Rivers included are the Lune, Ribble, Kent, Leven and Duddon.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Lune Catchment ; Salmon fisheries ; River fisheries ; Rivers ; Catch statistics ; Fishery regulations ; Salmo trutta ; Salmo salar ; Fish counters ; Fishing nets
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 11
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  • 5
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    Central area fisheries annual report 1994 (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8509 | 1256 | 2012-12-21 15:37:01 | 8509 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-03
    Description: The purpose of this report is to record key events/data and to outline the activities of the NRA Central Area Fisheries Function during 1994. The Rivers looked at include the Ribble, Lune, Hodder and Wyre. The issues that the report looks at includes Hydrological and meterological data, catch data for salmon and sea trout, fish kills, and fish stocking. It also lists the Micro-tag returns for 1994 and the six key objectives that the Central Area Fisheries Function has set itself for 1995. The report uses a range of different graphs and tables to display their data.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Rivers ; River fisheries ; Coarse fish ; Salmo salar ; Salmo trutta ; Stream flow ; Catch statistics ; Stock assessment ; Fish counters ; licensing
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 49
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  • 6
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    Biological report - fish mortality, River Conder, 21.7.79 (2021)
    North West Water Authority Rivers Division | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8534 | 1256 | 2012-12-21 15:12:33 | 8534 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-03
    Description: Following a large scale fish mortality caused by a considerable spillage of a pentachlbrophenol-based disinfectant from a mushroom farm, a biological survey of the river Conder was undertaken on 23.7.79. A spillage of this same make of disinfectant from this mushroom farm in February 1976 caused a similar large scale fish mortality.On that occasion, the pollution appeared to have little effect on the benthic invertebrates of the river Conder, with no dead organisms found, although the smallbeck which received the spillage was quite badly affected. This recent spillage of disinfectant involved a considerably greater volume (approximately 900gallons) than the 1976 discharge and so this report looks at whether invertebrate fauna of the main river were affected on this occasion. Kick samples were taken at a number of sites in the river Conder from the confluence with the polluted beck to Conder Green. A control sample was also taken upstream of the confluence with the polluted beck. All samples were examined on site and live and dead invertebrates noted and identified as accurately as possible.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Pollution ; England ; Lune Catchment ; Rivers ; Freshwater fish ; Mortality ; Freshwater organisms ; Pollution effects
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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  • 7
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    Field validation of the 'Logie' fish counter at Forge weir on the River Lune, 1992 (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8532 | 1256 | 2012-12-21 15:13:52 | 8532 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-03
    Description: The stock assessment task group report (1991) mentions that fish counters could play a key role in providing data on the size of the adult stock, and in particular the migratory salmonid stock. This report assesses the performance of the 'logie' fish counter at Forge Weir on the River Lune. Using video surveillance, a total of 1137 hours time lapse and 15 hours real time were used for validation purposes. This report looks at materials and methods, counting accuracy, sizing ability and environmental conditions, performance across the electrode array and salmonid swimming speed.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Lune Catchment ; River Fisheries ; Fish counters ; Migratory species ; Salmon fisheries ; Environmental condtions
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 54
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  • 8
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    The calibration of a semi-quantitative approach to fish stock assessment in the North West Region of the NRA (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8531 | 1256 | 2012-12-21 15:14:38 | 8531
    Details
    Publication Date: 2021-07-03
    Description: (1) A total of 45 sites was sampled, each being fished usingthe semi-quantitative and quantitative techniques.(2) A significant relationship existed between thesemi-quantitative and Quantitative results for all agegroups of salmonids (R2 83.4% to 96.1%, p 〈 0.0001).(3) The results from each site were categorised according toan existing classification system for quantitative andsemi-quantitative data. The semi-quantitative component ofthis system was modified using the results of thisinvestigation. The degree of error associated with sitesclassified semi-quantitatively was found to be slightlyless when using the modified system for 0+ salmon, 〉 0+salmon and 0+ trout, ranging from 10.5% to 30%.(4) Insufficient data points were available for the analysisof coarse fish data.
    Description: Environment Agency Archives North West
    Description: + Appendices
    Keywords: Fisheries ; Limnology ; England ; Cumbria ; Inland waters ; Freshwater fish ; Stock assessment ; Fish populations ; Environmental assessment ; Electric fishing
    Repository Name: AquaDocs
    Type: monograph
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  • 9
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    Summary of fishery statistics 1991 (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8365 | 1256 | 2012-03-04 21:55:18 | 8365 | Environment Agency, UK (Freshwater Biological Association)
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    Publication Date: 2021-07-02
    Description: This fisheries report summarises developments of the year 1991 in the region of the North West Water Authority. It provides catch statistics, rod and line and commercial catches for salmon and sea trout, fish culture and hatchery operations, restocking with trout and freshwater fish, upstream fish movement recorded at authority fish counters, counts of salmon and sea trout spawning redds, fish mortalities, licences issued, and prosecutions. Among the streams that are covered in the report are the River Lune, River Kent, River Leven, River Duddon, River Ribble, River Wyre, River Derwent and River Esk.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Cumbria ; Lancashire ; Inland fisheries ; Fish catch statistics ; Angling ; Stock assessment ; Licensing ; Fishing mortality ; Redds ; Salmonid fisheries ; Migratory species ; Hatcheries ; Stocking (organisms)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 41
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  • 10
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    River Wyre - a migratory salmonid river (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8500 | 1256 | 2012-12-22 13:39:02 | 8500 | Environment Agency, UK (Freshwater Biological Association)
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    Publication Date: 2021-07-03
    Description: This report has been prepared in response to a request from the National Rivers Authority. It produces a broad assessment of the River Wyre as a migratory salmonid river based on a site visit and the documentation provided, and looks at objectives of the Wyre salmon and sea trout restoration group. It also looks at ways for habitat improvement and recommends other possible means of fisheries management development for the River Wyre.
    Description: Environment Agency Archives North West
    Description: + 15 plates
    Keywords: Ecology ; Environment ; Limnology ; England ; Wyre Catchment ; River fisheries ; Habitat improvement ; Migratory species ; spawning ; Salmo salar ; Salmo trutta ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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  • 11
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    River Lune juvenile fish stock assessment 2002 (annotated draft copy, Site Reports only) (2021)
    Environment Agency | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7987 | 1256 | 2012-02-10 21:26:38 | 7987 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: This draft copy of the River Lune juvenile fish stock assessment from 2000 provides "Site Reports" from different water bodies in the Lune catchment. These Site Reports provide brief information on habitat features, fishery classification and comments on species caught and stocking. This document provides no summary or interpretation of the given data.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Lune Catchment ; Salmo salar ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Stocking density ; Distribution ; Population number
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 128
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  • 12
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    The River Lune fact file (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7989 | 1256 | 2012-03-06 12:56:55 | 7989 | Environment Agency, UK (Freshwater Biological Association)
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    Publication Date: 2021-06-27
    Description: This document provides a brief introduction to the River Lune catchment and the role that the National Rivers Authority plays in catchment management.Included are a map of the catchment and short introductions to fisheries and characteristics of the catchment.
    Description: Environment Agency Archives North West
    Description: No date on publication, date given is estimated guess.
    Keywords: Conservation ; Environment ; Limnology ; England ; Lune Catchment ; Inland fisheries ; Catchment area ; Fishery management ; Nature conservation
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 7
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  • 13
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    Report on the 2001 stock assessment of the River Darwen catchment (2021)
    Environment Agency North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8040 | 1256 | 2012-02-21 15:39:40 | 8040 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: The River Darwen is a highly impacted Lancashire river with very little known about its fishery interest above the impassable weir at Salmesbury Bottoms. Below the weir there are populations of coarse fish around the confluence with the River Ribble. To the knowledge of local bailiff staff, prior to 1996 the fish population in the middle and upper River Darwen had never been surveyed by electric fishing. In order to address this lack of knowledge, a survey was undertaken during the summer of 1996 with the aim of evaluating the salmonid and cyprinid fish population in the river. Twenty two sites were surveyed by electric fishing between June 11th and July 11th 1996. Information was gathered on the presence and density of fish populations in the river catchment, and analysed according to the National Fisheries Classification Scheme in order to determine how these populations compare nationally with sites of similar habitat features. From this report, recommendations were made to improve and develop the fishery potential in relation to water quality and habitat prioritising areas classed as being Ashless. It was recommended that juvenile coarse fish should be stocked in the Houghton Bottoms area. This area has excellent fishery habitat and was found to contain a minor coarse fish population. Water quality in this stretch of river was thought to be good enough to establish a major coarse fish population. Fish were introduced for the first time in 1998 at Houghton Bottoms from the Agency's Leyland Fish Farm. 3000 each of Roach, Chub and Dace were introduced. Further fish introductions occurred in 2000 with the stocking of 1000 Chub, again from the Agency's Leyland Fish Farm in the Lower Darwen and Witton areas of the main river on a trial basis.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Ribble Catchment ; Rivers ; River fisheries ; Fishery surveys ; Distribution ; Electric fishing ; Population dynamics ; Coarse fish
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 21
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  • 14
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    Report on the 1992 stock assessment of the Wyre catchment (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8042 | 1256 | 2012-02-22 15:08:12 | 8042 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: The aim of this study was to assess the status of the juvenile salmonid and coarse fish populations of the Wyre catchment. Emphasis was placed on an examination of the distribution of spawning and nursery areas for salmonids within the study area and an assessment of the status of juvenile salmonid stocks. The species distribution and spawning areas for other fish species were also identified where possible and the status of the Wyre coarse fishery, downstream of Churchtown Weir, assessed. This report examines the results of stock assessment surveys carried out in the Wyre catchment between 2/06/92 and 11/08/92. Forty-six sites were surveyed from Tarnbrook Wyre (SD. 598577) and Marshaw Wyre (SD. 614541) downstream to St Michaels (SD. 465411). Flow, habitat and in-river obstructions have been shown to affect juvenile salmonid densities. A habitat description is provided for each site studied during the course of this study.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Wyre Catchment ; Salmo salar ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Stock assessment ; Distribution ; Population number ; Length frequency
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 133
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  • 15
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    Report on the 1994 juvenile salmon stocking study of Foxhouses and Grizedale Becks, River Wyre (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8044 | 1256 | 2012-02-22 15:07:40 | 8044 | Environment Agency, UK (Freshwater Biological Association)
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    Publication Date: 2021-06-28
    Description: The aim of this study was to assess the suitability of Foxhouses and Grizedale Becks as nursery habitat for juvenile salmon. A comprehensive fish stock assessment survey of the Wyre catchment was carried out by the NRA in 1992. This survey found that juvenile salmon were absent from two sites studied in Foxhouses Beck. In one site in Grizedale Beck, 0+ salmon were found at very low densities. Juvenile trout were found in all three sites studied in 1992. On the basis of the results of the 1992 survey, these two becks were stocked in 1994 with 0+ salmon reared from Lune broodstock at the NRA's Witcherwell Hatchery. These salmon were stocked at a known density, following a pre-stocking survey. This report examines and compares the results of the pre-stocking survey consisting of fourteen sites in the two becks, carried out between 12/04/94 and 27/04/94 and a post-stocking survey of six sites, carried out between 12/10/94 and 19/10/94. Flow, habitat and in-river obstructions have been shown to affect juvenile salmonid densities. A habitat description is provided for each site surveyed during the course of this study.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Wyre Catchment ; Salmo salar ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Stocking density ; Distribution ; Population number ; Length frequency
    Repository Name: AquaDocs
    Type: monograph
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  • 16
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    Salmon and freshwater fisheries in the Solway Firth. Report of the Working Party of North West Water Authority and the Annan District Salmon Fishery Board. (2021)
    North West Water Authority | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8048 | 1256 | 2012-02-23 13:01:56 | 8048 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: The Workinq Party of North West Water Authority and the Annan District Salmon Fishery Board's aims were to identify the current problems relating to the salmon and freshwater fisheries in the Solway Firth and its tributaries (embracing the catchments of the Annan, Kirtle Water, Sark, Esk, Eden, Wampool and Waver - and possibly also the Lochar Water and the Nith) to produce agreed outline solutions, and to consider the financial aspects of the future administration of these fisheries.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Eden Catchment ; Salmo trutta ; Rivers ; River fisheries ; Estuarine fisheries ; Salmon fisheries ; Estuaries ; Fishery organizations
    Repository Name: AquaDocs
    Type: monograph
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  • 17
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    An analysis of salmon rod catch data from castle fisheries, River Derwent, 1923-1989. (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8057 | 1256 | 2012-02-24 12:39:06 | 8057 | Environment Agency, UK (Freshwater Biological Association)
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    Publication Date: 2021-06-28
    Description: The aim of this study was to investigate the historical catch record from the Castle Fishery on the River Derwent over the period 1923 - 1989, to determine if changes had taken place in the composition of the catch and to examine the influence of flow on the performance of the fishery. The River Derwent is situated in West Cumbria, North West England. It flows from its source on Scafell Pike (NGR NY 229 089) westwards discharging into the Irish sea at Workington, a distance of 52 km. Over its length it receives water from an additional 214 km of stream, 5 large lakes and approximately 30 small tarns. The catchment drains a total area of 663 km2.The study concludes that through the time period there was considerable variation in catch between years. The trend was for the catch to increase steadily over the period 1923 - 1958, declining rapidly in 1959, after which catches increased steadily reaching a peak in the mid-sixties, before declining towards the end of the decade. During the seventies and eighties catches remained relatively stable at between 300 - 600 salmon per year until 1988 when over 2000 salmon were reported caught, the greatest number in any year over the study period.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Derwent Catchment ; Rivers ; Fishery surveys ; Catch statistics ; Long-term records ; Flow measurement
    Repository Name: AquaDocs
    Type: monograph
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    Format: 74
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  • 18
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    Swanside Beck, fisheries survey, 22nd September 1992 (2021)
    Environment Agency North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8080 | 1256 | 2012-02-29 14:17:01 | 8080 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: Swanside Beck is formed from a number of minor tributaries which rise in the Middop area to the west of Barnoldswick. The Beck is approximately 10 km long from the source of its longest tributary (SD. 850445) to the confluence with the River Ribble (SD. 769455). Swanside Beck has one major tributary, Ings Beck, which rises from a number of sources on Twiston Moor and is approximately 6km in length from the source of its longest tributary (SD. 812418) to the confluence with Swanside Beck (SD. 785453). Both Swanside and Ings Becks are important spawning and nursery areas for salmon and sea trout from the River Ribble. In recent years a perceived decline in the migratory fish population of the becks has been reported. This decline has been reported in terms of both adult returns and juvenile production and has been particularly noted in Swanside Beck. The aim of this survey was to assess the likely benefits to Fisheries and Conservation interests of the adoption of a set aside policy for agricultural land adjacent to Swanside Beck. The survey also formed part of an on-going Fisheries study of factors limiting juvenile migratory salmonid production in Swanside Beck. This section of the report deals with the Fisheries aspects of the survey.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Ribble Catchment ; Rivers ; River fisheries ; Fishery management ; Fish surveys ; Policies ; Migrations ; Migratory species ; Nature conservation
    Repository Name: AquaDocs
    Type: monograph
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  • 19
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    An analysis of migratory salmonid catch effort data, derived from anglers' log books, 1991 (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8082 | 1256 | 2012-03-01 17:34:44 | 8082 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: 1000 log books were issued to anglers of which 236 were returned, those from the rivers Derwent, Kent, Lune and Ribble accounted for the vast majority. The Derwent had the highest catch rate of these rivers: one salmon every 13.89 hours followed by the Lune, Kent and Ribble at 16.39, 18.87 and 35.71 hours, respectively. For sea trout the Lune, Derwent and Ribble had a catch rate of approximately one fish every 10.0 hours (9.8, 10.0 and 10.64 hours),and for the Kent one fish per 16.1 hours fished. Salmon angling visits were, in general,longer than those for sea trout being between 2 and 6 hours as opposed to 2 to 4 hours. On the majority of visits (〉80%) no fish were caught and was the same for salmon and sea trout. For salmon the majority of fish were caught on fly, spinner or worm, and the least on prawn. For sea trout fly predominated. The majority of salmon caught were less than 91b in weight and were presumed to be grilse (1 sea winter). The majority of the sea trout caught weighed between 1 and 31b. The pattern of catch, effort, CPUE, abundance and catchability for salmon and sea trout were modelled using the data from the rivers Derwent, Kent and Lune. Flow significantly influenced catch, effort and catchability of salmon which had entered in a particular month. For sea trout flow was not significantly correlated with any of the dependent variables. The catchability coefficient for salmon, determined from the total number of fish, remained relatively constant over the period June to October indicating that CPUE was a reasonable measure of within season abundance. This was not found to be the case for sea trout.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Rivers ; Logbooks ; Salmo salar ; Salmo trutta ; Salmon fisheries ; Catch statistics ; Catch/effort ; Weight ; River fisheries
    Repository Name: AquaDocs
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    Report on an egg bioassay experiment (2021)
    National Rivers Authority North West | Preston, UK
    In:  http://aquaticcommons.org/id/eprint/8079 | 1256 | 2012-02-17 13:42:01 | 8079 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: In October 1992, a fish population survey of the Swanside Beck system revealed that the densities of juvenile salmon present in the beck were generally poor. The survey highlighted that a potential reason for this may be due to a lack of spawning substrate resulting from siltation. Numerous workers have found that increased levels of A salmonid egg box experiment of Swanside Beck carried out in the spring of 1994, revealed that the survival rates in the majority of sites were good. While the in-site variability was relatively high, mean survival rates remained in excess of 70%. As a result egg survival rates were eliminated as the reason for low juvenile salmonid production. The only site with a relatively low survival rate was Swanside Beck downstream of Cowgill Beck. However, even at this site siltation was eliminated as the cause of the increased mortality rate. It is recommended that a salmonid stocking of Swanside Beck should be carried out this year. This should be followed by an electric fishing survey to evaluate juvenile salmonid survival rates.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Ribble Catchment ; Salmon fisheries ; Fry ; Survival ; Stocking (organisms) ; Silting
    Repository Name: AquaDocs
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  • 21
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    An evaluation of the survival of Atlantic salmon (Salmo salar L.)fry stocked in eight streams in the North West of England. (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8083 | 1256 | 2012-03-01 17:34:08 | 8083 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-29
    Description: Eight streams from the North West of England were stocked with Atlantic salmon (Salmo salar L.) fed fry at densities ranging from 1 to 4/m2 over a period of up to three years to evaluate survival to the end of the first an d second growing periods and hence assess the value of stocking as a management practice. Survival to the end of the first growin g period (mean duration of 108 days) was found to vary between 7.8 and 41.3% with a mean of 22% and CV of 0.44. Survival from the end of the first growing period to the end of the second growing period (mean duration of 384 days) ranged from 19.9 to 34.1% with a mean of 26.3% and CV of 0.21. Survival was found to be positively related to 0+ trout density (P 〈 0.05) and negatively related to altitude (P 〈 0.05). A comparison of the raw survival data (non standardised with respect to duration of experiments) with that from other studies in relation to stocking densities revealed a negative relationship between fry survival and stocking density (P 〈 0.05). Densities in excess of 5/m2 tended to result in lower levels of survival. Post stocking fry dispersal patterns were examined for the 1991 data. On average 86.7% of the number of fry surviving remained within the stocked zone by the end of the first growing period. With the exception of one stream there was little in the way of dispersal beyond the stocked zone. The dispersal pattern approximated to the normal distribution (P 〈 0.05). It was estimated that stocking can result in a net gain of fish to a river system compared with natural productivity, however the numerical significance of this gain and its cost effectiveness need to be determined on a river specific basis.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Rivers ; River fisheries ; Fry ; Stocking (organisms) ; Redds ; Marking ; Stocking density ; Spawning populations ; Fish eggs ; Distribution ; Survival
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  • 22
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    Central area fisheries annual report 1995 (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8510 | 1256 | 2012-12-21 15:35:55 | 8510 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-03
    Description: The purpose of this report is to record key events and achievements of the NRA Central Area Fisheries Function in 1995. Rivers include the Ribble, Hodder and Lune. The report looks at Hydrological and meteorological data, site visits made during the year, communications and reports, Capital works and purchases, Stock assessment, monitoring and specific investigations, Fisheries Management advice, Fish kills and rescues, Fish rearing and stocking. It also looks at rod and net catches for salmon and sea trout, micro-tag returns, the drought, the results of the 1995 objectives set the year before and the key objectives for 1996.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Rivers ; River fisheries ; Coarse fish ; Salmo salar ; Salmo trutta ; Stream flow ; Catch statistics ; Stock assessment ; Fish counters ; licensing ; Fisheries management
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  • 23
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    River habitats for salmonids on the River Lune catchment (2021)
    Environment Agency | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7930 | 1256 | 2012-02-10 21:25:17 | 7930 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-26
    Description: An extensive survey of the River Lune using River Habitat Survey (RHS) was commissioned to assess the habitat quality of the Lune for salmonid fish. The main river on the Lune and tributaries were divided into 500m sections. A sample of 103 sections (25% of the total classified length) was randomly selected and surveyed in February/March 99. A Habitat Modification Score (HMS) describing the level of habitat modification was derived for each site and compared to the whole reference network and to rivers of similar types in Britain.The analysis of Habitat Modification scores show that more than 70% of the sites on the catchment are predominantly unmodified and very few sites are significantly modified (less than 10% of the sites). The analyses of the data collected suggest that although river habitats are altogether of good quality, the natural processes within the catchment may reduce spawning habitats for salmonids. The river processes appear to be driven by natural forces, although land-use is likely to impact on the levels of run-off. Further analyses using fisheries data on the Lune will investigate the relationship between the major environmental dimensions and fish distribution on the catchment.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Lune Catchment ; Habitat ; Rivers ; Environmental surveys ; Salmon fisheries ; River fisheries
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  • 24
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    Summary of fishery statistics 1990 (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8363 | 1256 | 2012-03-04 21:55:34 | 8363 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This fisheries report summarises developments of the year 1990 in the region of the North West Water Authority. It provides catch statistics, rod and line and commercial catches for salmon and sea trout, fish culture and hatchery operations, restocking with trout and freshwater fish, upstream fish movement recorded at authority fish counters, counts of salmon and sea trout spawning redds, fish mortalities, licences issued, and prosecutions. Among the streams that are covered in the report are the River Lune, River Kent, River Leven, River Duddon, River Ribble, River Wyre, River Derwent and River Esk.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Cumbria ; Lancashire ; Inland fisheries ; Fish catch statistics ; Angling ; Stock assessment ; Licensing ; Fishing mortality ; Redds ; Salmonid fisheries ; Migratory species ; Hatcheries ; Stocking (organisms)
    Repository Name: AquaDocs
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  • 25
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    An investigation into the effects of electric fishing equipment on salmon and sea trout within the area of the Lancashire River Board. (2021)
    Lancashire River Board | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8560 | 1256 | 2012-12-20 21:03:20 | 8560 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-03
    Description: The report looks at experiments into electric fishing equipment and effects on salmon and trout within the Lancashire River Board. Experiments include obtaining information on voltage gradients, ascertaining what damage to fish of the larger size groups resulted from electric fishing, determining whether or not fractures could occur in coarse fish and brown trout,similar to those occurring in salmon and sea trout, and effects low temperatures have on electrofishing techniques.
    Description: Environment Agency Archives North West
    Description: No date on paper, date given is estimated guess.
    Keywords: Fisheries ; Limnology ; England ; Lancashire River Board ; Samonid fisheries ; Salmo salar ; Salmo trutta ; Kelt ; Fish eggs ; Electric fishing ; Fish biology ; Fishing mortality ; Environmental effects
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  • 26
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    Summary of fishery statistics 1989 (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8344 | 1256 | 2012-03-04 21:55:45 | 8344 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This fisheries report summarises developments of the year 1989 in the region of the North West Water Authority. It provides catch statistics, rod and line and commercial catches for salmon and sea trout, fish culture and hatchery operations, restocking with trout and freshwater fish, upstream fish movement recorded at authority fish counters, counts of salmon and sea trout spawning redds, fish mortalities, licences issued, and prosecutions. Among the streams that are covered in the report are the River Lune, River Kent, River Leven, River Duddon, River Ribble, River Wyre, River Derwent and River Esk.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Fisheries statistics
    Repository Name: AquaDocs
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  • 27
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    Summary of fishery statistics 1993 (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8371 | 1256 | 2012-03-04 21:54:53 | 8371 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This fisheries report summarises developments of the year 1993 in the North West region of the National Rivers Authority. It provides catch statistics, rod and line and commercial catches for salmon and sea trout, fish culture and hatchery operations, restocking with trout and freshwater fish, upstream fish movement recorded at authority fish counters, counts of salmon and sea trout spawning redds, fish mortalities, licences issued, and prosecutions. Among the streams that are covered in the report are the River Lune, River Kent, River Leven, River Ribble and River Derwent.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Cumbria ; Lancashire ; Inland fisheries ; Fish catch statistics ; Angling ; Stock assessment ; Licensing ; Fishing mortality ; Redds ; Salmonid fisheries ; Migratory species ; Hatcheries ; Stocking (organisms)
    Repository Name: AquaDocs
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  • 28
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    Summary of fishery statistics 1992 (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8370 | 1256 | 2012-03-04 21:55:10 | 8370 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This fisheries report summarises developments of the year 1992 in the North West region of the National Rivers Authority. It provides catch statistics, rod and line and commercial catches for salmon and sea trout, fish culture and hatchery operations, restocking with trout and freshwater fish, upstream fish movement recorded at authority fish counters, counts of salmon and sea trout spawning redds, fish mortalities, licences issued, and prosecutions. Among the streams that are covered in the report are the River Lune, River Kent, River Leven, River Ribble and River Derwent.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Cumbria ; Lancashire ; Inland fisheries ; Fish catch statistics ; Angling ; Stock assessment ; Licensing ; Fishing mortality ; Redds ; Salmonid fisheries ; Migratory species ; Hatcheries ; Stocking (organisms)
    Repository Name: AquaDocs
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  • 29
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    Report on the 1995 stock assessment of the Douglas catchment (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7997 | 1256 | 2012-02-17 22:04:57 | 7997 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: The River Douglas has a long industrial heritage beginning in the early 18th century with its use by boats carrying goods between Wigan and Tarleton. The River and its tributaries have also historically been, and to a certain extent are still, subject to polluting inputs from the urban, agricultural and industrialised areas located within its catchment. During the early stages in the production of the River Douglas Catchment Management Plan, it became apparent that very little data existed on the populations of coarse and salmonid fish species within the River Douglas system. The data that did exist was largely anecdotal, consisting of catch reports from anglers or water bailiffs, or of dead and distressed fish following pollution incidents. This study was initiated to assess the status of coarse and salmonid fish species within the River Douglas system and so address the lack of knowledge. Eighty two sites were surveyed by electric fishing, including 14 sites using an electric fishing punt and up to four anodes. The data was analysed according to a new National Fisheries Classification Scheme. This classified the sites by the fish stock s present and compared the results with a database containing information from sites around the country that have similar habitat types. A stocking experiment was also undertaken in the River Lostock using chub reared at the Leyland Hatchery. These were marked with an identifiable blue spot in the spring of 1995 and then released into three, previously surveyed, locations in the river. These sites were then resurveyed during the summer stock assessment. This report also Site Reports with details on monitored sites, habitat features and fishery classification.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Ribble Catchment ; Rivers ; Electric fishing ; Catchment area ; Stock assessment ; Salmo trutta ; Salmo salar ; Salmonid fisheries ; Biomass
    Repository Name: AquaDocs
    Type: monograph
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    An investigation of the recaptures rates for tagged brown trout stocked into the River Ribble (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7999 | 1256 | 2012-02-17 22:01:15 | 7999 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: The angling season for non-migratory brown trout, in the Environment Agency (EA) North West Region, runs from March 15th to September 30th. Each year, large numbers of farm reared brown trout are stocked into the rivers of the North West Region's Central Area. In 1994, approximately 20,000 brown trout were introduced into the River systems of the Lune, Wyre and Ribble by local angling clubs and fishery owners. Most of these fish were stocked at a length greater than that defined by local byelaws as the takeable size (200mm). Introductions are made to supplement the existing wild brown trout populations within the river and increase the probability of an angler catching a fish. Stocking with fish of a sufficient length allows the successful angler to remove the catch for their own use. In this way, stretches of the rivers are effectively managed as "put and take" fisheries for brown trout. A number of brown trout fingerlings are also introduced each year by angling clubs and fishery owners. These are stocked with the expectation that the fish will survive in the river to grow, over-winter, and eventually attain a takable size with an increased degree of "wildness". The lower cost of fingerlings, as opposed to trout of a takable length, makes their introduction more attractive to angling clubs since a greater number can be stocked for a given cost. Although the practise of stocking brown trout has occurred for many years in the Central Area, there is little information of its success in terms of increasing anglers catches, or the survival offish introduced. This study was initiated to determine the recapture rates by angling of brown trout following their introduction into a river fishery. The information gained from this study can then be used to give guidance to angling clubs and fishery owners on the optimal strategies for stocking fish.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Ribble Catchment ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Angling ; Stocks ; Stock assessment ; Stocking (organisms)
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    Report on the collection of salmon creel census data from Rivers Ribble and Hodder (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7995 | 1256 | 2012-02-17 13:42:34 | 7995 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: The River Ribble bailiff team completed a total of 377 salmonid creel censuses by interviewing anglers fishing on the banks of the Rivers Ribble and Hodder during 1994. The study was undertaken for a number of reasons: (i) , To determine which areas of the river were fished by anglers. (ii) To ascertain which fishing methods were used in these areas. (iii) To identify the success of each fishing method within each area of the River Ribble system. In a limited 1993 sampling programme, 55 censuses were carried out. Results from these indicated that fishing with worm as bait was the most common method (39% of anglers interviewed) and also resulted in the greatest number of salmon being caught (61% of all salmon). The 1994 census data were collected from all areas of the Ribble system during the months of June to October. The data presented here are for anglers fishing for salmon only or for those fishing for salmon and sea trout at the same time. All of the fish caught were salmon.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Ribble Catchment ; Rivers ; Census ; Salmon fisheries ; Angling ; Catching methods ; Catch statistics
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  • 32
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    Juvenile salmon investigations River Wenning catchment 1981-86 (2021)
    North West Water | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7780 | 1256 | 2012-02-21 15:39:07 | 7780 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-05
    Description: 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.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Lune Catchment ; Salmo salar ; Rivers ; Water quality ; River fisheries ; Salmon fisheries ; Electric fishing ; Stocking density ; Fry
    Repository Name: AquaDocs
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  • 33
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    Summary of fishery statistics, 1988 (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8107 | 1256 | 2012-03-04 21:55:55 | 8107 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-29
    Description: This fisheries report summarises developments of the year 1988 in the region of the North West Water Authority. It provides catch statistics, rod and line and commercial for salmon and sea trout, fish culture and hatchery operations, restocking with trout and freshwater fish, upstream fish movement recorded at authority fish counters, counts of salmon and sea trout spawning redds, fish mortalities, licences issued, and prosecutions. Among the streams that are covered in the report are the River Lune, River Kent, River Leven, River Duddon, River Ribble, River Wyre, River Derwent and River Esk.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Fisheries statistics
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  • 34
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    River Lune juvenile fish stock assessment 1997 with particular reference to salmonids (2021)
    Environment Agency | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7932 | 1256 | 2012-02-10 21:28:07 | 7932 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-26
    Description: This report presents data from the juvenile salmonid fish stock assessment which is part of the routine Environment Agency riverine monitoring programme. A total of 110 sites was electrofished throughout the Lune catchment between 15th July 1997 and 14th October 1997. These sites included 84 that had been previously sampled in the last comprehensive survey of the catchment, in 1991. The aim of this survey was to assess the distribution and abundance of juvenile salmon and trout in the River Lune catchment and to compare results with those of previous surveys.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Lune Catchment ; Salmo salar ; Salmo trutta ; Rivers ; Water quality ; River fisheries ; Salmon fisheries ; Fishery surveys ; Fry ; Stocking density ; Distribution ; Population number ; Electric fishing
    Repository Name: AquaDocs
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  • 35
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    An investigation into the potential losses of fish on the filter plates at the Hodder Water Treatment Works Stocks Reservoir (2021)
    North West Water, Fisheries Section | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7991 | 1256 | 2012-02-16 12:35:17 | 7991 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Stocks Reservoir is situated amidst the Forest of Bowland in the upper reaches of the old river valley of the Hodder.The reservoir was built in 1927 for the Fylde Water Board who primarily supplied water to Blackpool. The objective of this study is to assess the degree and likelihood of fish ingress onto the fish plates at the present and proposed stocking densities. An additional aim is to evaluate the operational implications, and if necessary suggest methods of alleviating the problem. Three spheres of study have been undertaken to achieve these objectives, these being: 1. To selectively stock the reservoir and monitor the angling club catches in order to assess the total population, relating it to fish plate losses and proposed stocking densities. 2. To monitor the fish taken from the fish plates and assess the reasons for their ingress. 3. To study the draw off tower and fish plates, and suggest ways of ameliorating or halting the loss of fish and consequent operational problems.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Ribble Catchment ; Angling ; Reservoir fisheries ; Water reservoirs ; Stock assessment ; Population density
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  • 36
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    The Crossens Estuary and the effect of Southport STW (2021)
    North West Water, Directorate of Planning | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7992 | 1256 | 2012-02-16 12:36:43 | 7992 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: This report details the results from water quality surveys, carried out in August 1986, which were designed to examine the condition of the Crossens Estuary when receiving primary treated effluent from Southport STW. The results are compared with previous surveys in 198 2 and 1984 when various degrees of secondary treatment were provided. The findings demonstrate that the reduction in the level of treatment has resulted in longer periods of deoxygenation throughout the estuary, but that this has not resulted in any major change in the use or characteristics of the estuary. The estuary remains in Class C.
    Description: Environment Agency Archives North West
    Keywords: Environment ; Limnology ; England ; Ribble Catchment ; Estuaries ; Classification ; Deoxygenation ; Water treatment
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    An analysis of the historical catch data from the migratory salmonid fisheries of the River Ribble (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7996 | 1256 | 2012-02-17 22:03:52 | 7996 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: The Ribble catchment is the largest and most diverse river system within National Rivers Authority (NRA), North West's Central Area. The river is approximately 100km in length and rises in a limestone area west of the Pennines. This report examines changes in the size and composition of the salmon and sea trout catches from the Ribble migratory salmonid fisheries during the years 1937 to 1991. Comparisons are made between the rod and net fisheries for both salmon and sea trout of the Ribble and Hodder. Patterns of catches shown by the Ribble fisheries are compared with those of other individual rivers and with patterns for the North West Region as a whole. An attempt is made to identify if any relationship exists between catch and stock abundance. Catch patterns shown by the Ribble and Hodder salmon fisheries are compared with electronic resistivity counter data from the two rivers. Annual salmon catch patterns and redd count data are compared both locally and regionally. Recommendations for future studies are made in the light of the report's findings.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Ribble Catchment ; Stock assessment ; Abundance ; Salmo salar ; Salmo trutta ; Long-term changes ; Salmon fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 38
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    Report on the analysis of salmon scale samples returned by anglers on the Rivers Ribble and Hodder (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7998 | 1256 | 2012-02-17 22:03:15 | 7998 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Fisheries technical staff from the North West Central Area of the National Rivers Authority (NRA) currently provide a service for the ageing of salmon scales from fish caught by anglers on the Rivers Ribble and Hodder in order to gather information on the biological characteristics of the salmon population on the River Ribble system in terms of weight, freshwater age and sea age.At the beginning of each fishing season, scale envelopes are distributed by the NRA to angling clubs and some individual anglers. Scales taken from salmon caught on the rivers are returned to the NRA Central Area Office by the anglers, or more often, by NRA bailiffs. The age of each fish caught is then determined by the identification and counting of annuli for both the river and sea zones on the scale. Information is provided by the angler on the scale packet concerning the length and weight of the fish caught, and the date, location and method of capture. Both this information and the age of the fish is recorded on a database. These data can be used to investigate the distribution, and exploitation patterns of the different age classes of the salmon stock within the river system. This report is principally concerned with the scale samples received in 1994, although comparison is also made with samples from 1993 and 1992. References to data will all relate to that received in 1994 unless an alternate year is stated.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Ribble Catchment ; Salmo salar ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Scales ; Scale reading ; Angling
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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  • 39
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    The Ribble. Portrait of an estuary (2021)
    Ribble Estuary Partnership | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8000 | 1256 | 2012-02-17 13:39:34 | 8000 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: Blackpool, Lytham St. Anne's and Southport are household names as popular leisure and holiday resorts the length and breadth of the land. Their location at the mouth of the estuary of the River Ribble is much less well known, yet this same estuary is of paramount importance to both the economy and the environment of North West England. Indeed, the Ribble Estuary is of international importance for interests as diverse as wintering and migrating wild birds on one hand to the modern aerospace industry on the other. This brochure provides a brief introduction to the estuary of the River Ribble including a historic overview of the people living near the estuary, agriculture and wildlife.
    Description: Environment Agency Archives North West
    Keywords: Environment ; Limnology ; Sociology ; England ; Ribble Catchment ; Estuaries ; Brackishwater environment ; Estuarine fisheries ; Agriculture
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 36
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  • 40
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    Arctic charr from Ennerdale Water: a pilot study (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8056 | 1256 | 2012-02-24 12:39:38 | 8056 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: There are three fish species in the north west of England, Arctic charr (Salvelinus alpinus, L.), schelly (Coreqonus lavaretus. L.), and vendace (C. albula, L.), which have been reported as rare and vulnerable and have been identified as requiring the preparation and implementation of a conservation management plan.The presence of Arctic charr in Ennerdale Water has resulted in it being designated as a Site of Special Scientific Interest. These fish and one race of the species in Lake Windermere are the only English populations of charr known to spawn in running water. Associated with Ennerdale charr is the copepod parasite Salmincola edwardsii which has not been recorded from any other charr inhabited waters of the Lake District. However, it has been recorded on charr from four Scottish Lochs (Stack, Lee, Tay and Doon). The unique nature of Ennerdale is further highlighted by the presence of two crustaceans, Mysis relicta and Limnocalanus macrurus. The former has been recorded in Ireland while the latter is not known to exist anywhere else in the British Isles. The aim of this pilot study was to obtain baseline data on charr that spawn in Smithy Beck and the River Liza. This would indicate the current status of the population and help identify areas requiring further investigation. A total of 161 fish (95 males and 66 females) was caught and tagged over the 3 day period, 141 from Smithy Beck and 20 from the Liza. The raw data of the findings is presented in two appendices.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Ennerdale Water ; Fishery survey ; Sex ratio ; Spawning ; Rivers ; Lakes ; Length frequency
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 22
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  • 41
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    Arctic charr from Ennerdale water - relicts of the ice age (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8058 | 1256 | 2012-02-24 12:34:15 | 8058 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: The work discussed in this report deals with aspects of theecology of Arctic charr (Salvelinus alpinus, L.). The main aims of the study were: (1) To assess the relative abundance of migrants entering the River Liza and Smithy Beck in the English Lake District). (2) To assess the degree of stream specificity. (3) To determine the period of residency in the streams. (4) To obtain a better understanding of migratory behaviour. (5) To determine the growth rate of mature fish. (6) To determine the morphometric and meristic attributes. In conjunction with this work a study was carried out to investigate the feasibility of using a video recording system to monitor the migration of charr in Smithy Beck.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Ennerdale Water ; Salvelinus alpinus ; Fishery survey ; Sex ratio ; Spawning ; Rivers ; Lakes ; Length frequency ; Videotape recordings ; Abundance ; Migrations
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 91
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  • 42
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    The proposed Lune net limitation order 1999 and associated byelaws (2021)
    Environment Agency North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8062 | 1256 | 2012-02-24 12:29:07 | 8062 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: The River Lune rises in the hills around Tebay in thje North of England and runs through rural farming country to Morecambe bay. It is generally considered as a river of high purity and unspoiled nature. The salmon fishery was at one time considered amongst the best in England and Wales, with very high catches to both rod and net fishermen. During the late 1960's the disease UDN decimated the stock. Since then there has been a recovery of the stock, but this is considered by most anglers and netsmen to be a partial recovery of some of the previous stock components. In recent years anglers and netsmen have voiced their concerns over the Lune stock and have lobbied for action to improve the Lune fishery. This net limitation order (NLO) and the separate byelaw in conjunction with habitat improvement are proposed as part of the strategy for future conservation and management of this salmon fishery. The fishery is currently exploited by 37 licensed netsmen, the highest number of any single estuary in England and Wales. There are 26 haaf, 10 drift and 1 seine nets available. Current estimates of the rod fishery are that 1100 to 1400 anglers fish 14 000 days per year. The River Luhe is one of the few rivers within England and Wales that has the benefit of an accurate fish counter. The counter is at Forge Weir approximately 4 km upstream of the tidal limit. The counts, together with records of the catches from the rod and net fishery, enable a reasonably accurate assessment of both rod and net exploitation. Extensive surveys of the juvenile population, carried out in 1991 and 1997, provide additional information. The purpose of this document is to describe and explain the current state of the salmon population in the River Lune and in doing so, demonstrate the current need for stock conservation. A second purpose is to demonstrate that the proposed NLO and byelaw package should allow the salmon population to reach its conservation target (spawning escapement target).
    Description: Environment Agency Archives North West
    Keywords: Conservation ; Fisheries ; Limnology ; England ; Lune catchment ; Salmo salar ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Net fishing ; Stock assessment ; Juveniles ; Fishery regulations
    Repository Name: AquaDocs
    Type: monograph
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    Format: 19
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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
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    Format: 75
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    Summary document of the work being done in 1992-1993 regarding the migratory salmonid fisheries of the River Ribble catchment (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8081 | 1256 | 2012-03-02 12:59:28 | 8081 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This document lists the work on salmonid fisheries in the River Ribble catchment in the north west of England which was done in 1992-93. The document includes the following: analysis of historical catch data from the River Ribble covering 1937-1991; Ribble and Hodder stock assessment surveys 1992-93 including Swanside Beck; Ribble catch data from game angling log books 1993; results of salmon scale sampling 1993; results of microtagging programme in Hodder and Ribble 1993; Waddow Weir dish counter data 1993; Winkley Hall (Hodder), Locks Weir and Waddow Hall (Ribble) fish counter data 1993; number of fish and ova from Witcherwell Hatchery 1993.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Ribble Catchment ; Salmon fisheries ; Fish counters ; Stock assessment ; Habitat ; Migratory species ; Migrations ; Angling ; Scales ; Tagging ; Salmo salar ; Salmo trutta
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 22
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