Report on the 1995 stock assessment of the Douglas catchment
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...
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National Rivers Authority North West
1996
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ftoceandocs:oai:aquadocs.org:1834/24806 2023-05-15T18:09:58+02:00 Report on the 1995 stock assessment of the Douglas catchment Clifton-Dey , D. Walsingham, M. 1996 application/pdf 217 http://hdl.handle.net/1834/24806 en eng National Rivers Authority North West Preston, UK http://fba.org.uk EA/NW/FTR/96/2 http://hdl.handle.net/1834/24806 dis@fba.org.uk http://aquaticcommons.org/id/eprint/7997 1256 2012-02-17 22:04:57 7997 Environment Agency, UK (Freshwater Biological Association) Ecology Fisheries Limnology England Ribble Catchment Rivers Electric fishing Catchment area Stock assessment Salmo trutta Salmo salar Salmonid fisheries Biomass monograph 1996 ftoceandocs 2023-04-06T17:02:43Z 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. Environment Agency Archives North West Book Salmo salar IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
topic |
Ecology Fisheries Limnology England Ribble Catchment Rivers Electric fishing Catchment area Stock assessment Salmo trutta Salmo salar Salmonid fisheries Biomass |
spellingShingle |
Ecology Fisheries Limnology England Ribble Catchment Rivers Electric fishing Catchment area Stock assessment Salmo trutta Salmo salar Salmonid fisheries Biomass Clifton-Dey , D. Walsingham, M. Report on the 1995 stock assessment of the Douglas catchment |
topic_facet |
Ecology Fisheries Limnology England Ribble Catchment Rivers Electric fishing Catchment area Stock assessment Salmo trutta Salmo salar Salmonid fisheries Biomass |
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. Environment Agency Archives North West |
format |
Book |
author |
Clifton-Dey , D. Walsingham, M. |
author_facet |
Clifton-Dey , D. Walsingham, M. |
author_sort |
Clifton-Dey , D. |
title |
Report on the 1995 stock assessment of the Douglas catchment |
title_short |
Report on the 1995 stock assessment of the Douglas catchment |
title_full |
Report on the 1995 stock assessment of the Douglas catchment |
title_fullStr |
Report on the 1995 stock assessment of the Douglas catchment |
title_full_unstemmed |
Report on the 1995 stock assessment of the Douglas catchment |
title_sort |
report on the 1995 stock assessment of the douglas catchment |
publisher |
National Rivers Authority North West |
publishDate |
1996 |
url |
http://hdl.handle.net/1834/24806 |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_source |
dis@fba.org.uk http://aquaticcommons.org/id/eprint/7997 1256 2012-02-17 22:04:57 7997 Environment Agency, UK (Freshwater Biological Association) |
op_relation |
http://fba.org.uk EA/NW/FTR/96/2 http://hdl.handle.net/1834/24806 |
_version_ |
1766182676504510464 |