A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids

Hugman, S.J. and O'Donnell, A.R. and Mance, G. (1984) A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids. Stevenage, UK, WRC Environment, 45pp.

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Abstract

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.

Item Type: Monograph or Serial Issue
Title: A survey of estuarine oxygen concentrations in relation to the passage of migratory salmonids
Personal Creator/Author:
CreatorsEmail
Hugman, S.J.
O'Donnell, A.R.
Mance, G.
Number of Pages: 45
Date: May 1984
Publisher: WRC Environment
Place of Publication: Stevenage, UK
Funders: Environment Agency Archives North West
Contact Email Address: dis@fba.org.uk
Issuing Agency: Environment Agency, UK (Freshwater Biological Association)
Uncontrolled Keywords: UK; Dissolved oxygen; Migratory species; Migrations; Estuaries; Standards; Salmo salar; Salmo trutta; Salmon fisheries
Subjects: Ecology
Fisheries
Limnology
Item ID: 8068
Depositing User: Hardy B Schwamm
Date Deposited: 27 Feb 2012 18:29
Last Modified: 27 Feb 2012 18:29
URI: http://aquaticcommons.org/id/eprint/8068

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