A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids
This report presents the first attempt at a national assessment of an Environmental Quality Standard (EQS) for dissolved oxygen (DO) in estuaries with the objective of allowing the passage of migratory salmonids. Under the Control of Pollution Act, Water Authorities and River Purification Boards have powers to control discharges to estuaries and need to define an EQS for the calculation of consent conditions. The object of any such standards is to permit the existence of good quality salmonid fisheries with only very occasional restrictions to the passage of fish. The report gives brief summaries of the DO regime in estuaries, the oxygen requirements of salmonids, and of tentative standards proposed by various authorities. These standards are then compared with DO and fishery data from UK estuaries, provided by the appropriate regulatory authorities. It concludes that a minimum annual lower 95-percentile of 5.0 mg/1 will meet the objective in most estuaries, and that a lower value of 3.0 mg/1 will permit the establishment of a more restricted fishery. However, more stringent standards may be needed in estuaries containing high concentrations of toxic pollutants. containing high concentrations of toxic pollutants.
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Format: | monograph biblioteca |
Language: | English |
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WRC Environment
1984-05
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Subjects: | Ecology, Fisheries, Limnology, UK, Dissolved oxygen, Migratory species, Migrations, Estuaries, Standards, Salmo salar, Salmo trutta, Salmon fisheries, |
Online Access: | http://hdl.handle.net/1834/24871 |
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dig-aquadocs-1834-248712021-06-28T03:05:22Z A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids Hugman, S.J. O'Donnell, A.R. Mance, G. Ecology Fisheries Limnology UK Dissolved oxygen Migratory species Migrations Estuaries Standards Salmo salar Salmo trutta Salmon fisheries This report presents the first attempt at a national assessment of an Environmental Quality Standard (EQS) for dissolved oxygen (DO) in estuaries with the objective of allowing the passage of migratory salmonids. Under the Control of Pollution Act, Water Authorities and River Purification Boards have powers to control discharges to estuaries and need to define an EQS for the calculation of consent conditions. The object of any such standards is to permit the existence of good quality salmonid fisheries with only very occasional restrictions to the passage of fish. The report gives brief summaries of the DO regime in estuaries, the oxygen requirements of salmonids, and of tentative standards proposed by various authorities. These standards are then compared with DO and fishery data from UK estuaries, provided by the appropriate regulatory authorities. It concludes that a minimum annual lower 95-percentile of 5.0 mg/1 will meet the objective in most estuaries, and that a lower value of 3.0 mg/1 will permit the establishment of a more restricted fishery. However, more stringent standards may be needed in estuaries containing high concentrations of toxic pollutants. containing high concentrations of toxic pollutants. Environment Agency Archives North West 2021-06-24T16:16:48Z 2021-06-24T16:16:48Z 1984-05 monograph http://hdl.handle.net/1834/24871 en http://fba.org.uk application/pdf application/pdf 45 WRC Environment Stevenage, UK dis@fba.org.uk http://aquaticcommons.org/id/eprint/8068 1256 2012-02-27 18:29:55 8068 Environment Agency, UK (Freshwater Biological Association) |
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Ecology Fisheries Limnology UK Dissolved oxygen Migratory species Migrations Estuaries Standards Salmo salar Salmo trutta Salmon fisheries Ecology Fisheries Limnology UK Dissolved oxygen Migratory species Migrations Estuaries Standards Salmo salar Salmo trutta Salmon fisheries |
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Ecology Fisheries Limnology UK Dissolved oxygen Migratory species Migrations Estuaries Standards Salmo salar Salmo trutta Salmon fisheries Ecology Fisheries Limnology UK Dissolved oxygen Migratory species Migrations Estuaries Standards Salmo salar Salmo trutta Salmon fisheries Hugman, S.J. O'Donnell, A.R. Mance, G. A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids |
description |
This report presents the first attempt at a national assessment of an Environmental Quality Standard (EQS) for dissolved oxygen (DO) in estuaries with the objective of allowing the passage of migratory salmonids. Under the Control of Pollution Act, Water Authorities and River Purification Boards have powers to control discharges to estuaries and need to define an EQS for the calculation of consent conditions. The object of any such standards is to permit the existence of good quality salmonid fisheries with only very occasional restrictions to the passage of fish. The report gives brief summaries of the DO regime in estuaries, the oxygen requirements of salmonids, and of tentative standards proposed by various authorities. These standards are then compared with DO and fishery data from UK estuaries, provided by the appropriate regulatory authorities. It concludes that a minimum annual lower 95-percentile of 5.0 mg/1 will meet the objective in most estuaries, and that a lower value of 3.0 mg/1 will permit the establishment of a more restricted fishery. However, more stringent standards may be needed in estuaries containing high concentrations of toxic pollutants. containing high concentrations of toxic pollutants. |
format |
monograph |
topic_facet |
Ecology Fisheries Limnology UK Dissolved oxygen Migratory species Migrations Estuaries Standards Salmo salar Salmo trutta Salmon fisheries |
author |
Hugman, S.J. O'Donnell, A.R. Mance, G. |
author_facet |
Hugman, S.J. O'Donnell, A.R. Mance, G. |
author_sort |
Hugman, S.J. |
title |
A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids |
title_short |
A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids |
title_full |
A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids |
title_fullStr |
A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids |
title_full_unstemmed |
A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids |
title_sort |
survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids |
publisher |
WRC Environment |
publishDate |
1984-05 |
url |
http://hdl.handle.net/1834/24871 |
work_keys_str_mv |
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_version_ |
1756077953995767808 |