Modelling the impact of the regulation of estuarine drift‐netting on the declared rod catch of Atlantic salmon Salmo salar L. in the River Usk
1. A novel method was used to determine if the statutory regulation of drift‐netting at the mouth of the River Usk in Wales was associated with a significant improvement in the stock and rod catch of salmon in the river upstream. 2. A linear regression model was constructed, in which the annual rod...
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Language: | English |
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1998
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Online Access: | http://dx.doi.org/10.1046/j.1365-2427.1998.00294.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2427.1998.00294.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2427.1998.00294.x |
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crwiley:10.1046/j.1365-2427.1998.00294.x 2024-06-02T08:03:42+00:00 Modelling the impact of the regulation of estuarine drift‐netting on the declared rod catch of Atlantic salmon Salmo salar L. in the River Usk Bowker Ferns Phillips Mawle 1998 http://dx.doi.org/10.1046/j.1365-2427.1998.00294.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2427.1998.00294.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2427.1998.00294.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Freshwater Biology volume 39, issue 3, page 569-576 ISSN 0046-5070 1365-2427 journal-article 1998 crwiley https://doi.org/10.1046/j.1365-2427.1998.00294.x 2024-05-03T11:46:16Z 1. A novel method was used to determine if the statutory regulation of drift‐netting at the mouth of the River Usk in Wales was associated with a significant improvement in the stock and rod catch of salmon in the river upstream. 2. A linear regression model was constructed, in which the annual rod catch of salmon declared from the Usk between 1977 and 1988 was the dependent variable and the simultaneous annual catch declared from the nearby River Wye was the independent variable. The model was extrapolated to project the annual rod catches of salmon on the Usk, relative to the Wye, between 1989 and 1995. 3. The model accurately projected the actual rod catches declared from the Usk in 1989, 1990 and 1991. However, between 1992 and 1995 the declared catches deviated significantly ( P ≤ 0.05) from those projected by the model. The upsurge in rod catches declared after 1992 from the Usk, relative to the Wye was concomitant with the regulation of estuarine drift‐netting. 4. It was concluded that diminished estuarine exploitation had a beneficial impact on salmon angling success on the Usk. However, the utility of the model was restricted by inconsistencies in the methods used to generate the data, by changes in fishery management policies and by a lack of essential information on the interrelationships between catch, effort, stock and environmental conditions. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Usk ENVELOPE(-128.420,-128.420,54.633,54.633) Freshwater Biology 39 3 569 576 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
1. A novel method was used to determine if the statutory regulation of drift‐netting at the mouth of the River Usk in Wales was associated with a significant improvement in the stock and rod catch of salmon in the river upstream. 2. A linear regression model was constructed, in which the annual rod catch of salmon declared from the Usk between 1977 and 1988 was the dependent variable and the simultaneous annual catch declared from the nearby River Wye was the independent variable. The model was extrapolated to project the annual rod catches of salmon on the Usk, relative to the Wye, between 1989 and 1995. 3. The model accurately projected the actual rod catches declared from the Usk in 1989, 1990 and 1991. However, between 1992 and 1995 the declared catches deviated significantly ( P ≤ 0.05) from those projected by the model. The upsurge in rod catches declared after 1992 from the Usk, relative to the Wye was concomitant with the regulation of estuarine drift‐netting. 4. It was concluded that diminished estuarine exploitation had a beneficial impact on salmon angling success on the Usk. However, the utility of the model was restricted by inconsistencies in the methods used to generate the data, by changes in fishery management policies and by a lack of essential information on the interrelationships between catch, effort, stock and environmental conditions. |
format |
Article in Journal/Newspaper |
author |
Bowker Ferns Phillips Mawle |
spellingShingle |
Bowker Ferns Phillips Mawle Modelling the impact of the regulation of estuarine drift‐netting on the declared rod catch of Atlantic salmon Salmo salar L. in the River Usk |
author_facet |
Bowker Ferns Phillips Mawle |
author_sort |
Bowker |
title |
Modelling the impact of the regulation of estuarine drift‐netting on the declared rod catch of Atlantic salmon Salmo salar L. in the River Usk |
title_short |
Modelling the impact of the regulation of estuarine drift‐netting on the declared rod catch of Atlantic salmon Salmo salar L. in the River Usk |
title_full |
Modelling the impact of the regulation of estuarine drift‐netting on the declared rod catch of Atlantic salmon Salmo salar L. in the River Usk |
title_fullStr |
Modelling the impact of the regulation of estuarine drift‐netting on the declared rod catch of Atlantic salmon Salmo salar L. in the River Usk |
title_full_unstemmed |
Modelling the impact of the regulation of estuarine drift‐netting on the declared rod catch of Atlantic salmon Salmo salar L. in the River Usk |
title_sort |
modelling the impact of the regulation of estuarine drift‐netting on the declared rod catch of atlantic salmon salmo salar l. in the river usk |
publisher |
Wiley |
publishDate |
1998 |
url |
http://dx.doi.org/10.1046/j.1365-2427.1998.00294.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2427.1998.00294.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2427.1998.00294.x |
long_lat |
ENVELOPE(-128.420,-128.420,54.633,54.633) |
geographic |
Usk |
geographic_facet |
Usk |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Freshwater Biology volume 39, issue 3, page 569-576 ISSN 0046-5070 1365-2427 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1365-2427.1998.00294.x |
container_title |
Freshwater Biology |
container_volume |
39 |
container_issue |
3 |
container_start_page |
569 |
op_container_end_page |
576 |
_version_ |
1800748295123894272 |