Juvenile salmon investigations River Wenning catchment 1981-86
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.
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Format: | monograph biblioteca |
Language: | English |
Published: |
North West Water
1987
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Subjects: | Ecology, Fisheries, Limnology, England, Lune Catchment, Salmo salar, Rivers, Water quality, River fisheries, Salmon fisheries, Electric fishing, Stocking density, Fry, |
Online Access: | http://hdl.handle.net/1834/24624 |
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dig-aquadocs-1834-246242021-07-05T02:48:24Z Juvenile salmon investigations River Wenning catchment 1981-86 Ingersent, B Ecology Fisheries Limnology England Lune Catchment Salmo salar Rivers Water quality River fisheries Salmon fisheries Electric fishing Stocking density Fry 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. Environment Agency Archives North West 2021-06-24T16:14:57Z 2021-06-24T16:14:57Z 1987 monograph http://hdl.handle.net/1834/24624 en http://www.fba.org.uk application/pdf application/pdf 31 North West Water Preston, UK dis@fba.org.uk http://aquaticcommons.org/id/eprint/7780 1256 2012-02-21 15:39:07 7780 Environment Agency, UK (Freshwater Biological Association) |
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Ecology Fisheries Limnology England Lune Catchment Salmo salar Rivers Water quality River fisheries Salmon fisheries Electric fishing Stocking density Fry Ecology Fisheries Limnology England Lune Catchment Salmo salar Rivers Water quality River fisheries Salmon fisheries Electric fishing Stocking density Fry |
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Ecology Fisheries Limnology England Lune Catchment Salmo salar Rivers Water quality River fisheries Salmon fisheries Electric fishing Stocking density Fry Ecology Fisheries Limnology England Lune Catchment Salmo salar Rivers Water quality River fisheries Salmon fisheries Electric fishing Stocking density Fry Ingersent, B Juvenile salmon investigations River Wenning catchment 1981-86 |
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. |
format |
monograph |
topic_facet |
Ecology Fisheries Limnology England Lune Catchment Salmo salar Rivers Water quality River fisheries Salmon fisheries Electric fishing Stocking density Fry |
author |
Ingersent, B |
author_facet |
Ingersent, B |
author_sort |
Ingersent, B |
title |
Juvenile salmon investigations River Wenning catchment 1981-86 |
title_short |
Juvenile salmon investigations River Wenning catchment 1981-86 |
title_full |
Juvenile salmon investigations River Wenning catchment 1981-86 |
title_fullStr |
Juvenile salmon investigations River Wenning catchment 1981-86 |
title_full_unstemmed |
Juvenile salmon investigations River Wenning catchment 1981-86 |
title_sort |
juvenile salmon investigations river wenning catchment 1981-86 |
publisher |
North West Water |
publishDate |
1987 |
url |
http://hdl.handle.net/1834/24624 |
work_keys_str_mv |
AT ingersentb juvenilesalmoninvestigationsriverwenningcatchment198186 |
_version_ |
1756077921139687424 |