Restoration of a brown trout (Salmo trutta L.) population to Loch Enoch, an acified Loch in Galloway, South-West Scotland

Collen, Peter and Harriman, Ron and Morrison, B.R.S and Keay, Elspeth and Watt, Alan (2000) Restoration of a brown trout (Salmo trutta L.) population to Loch Enoch, an acified Loch in Galloway, South-West Scotland. Freshwater Forum, 14, pp. 3-14.

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Abstract

The authors present the findings of a restoration project in Loch Enoch in Scotland. There are historical references that brown trout was present in Loch Enoch up to the 1920s but it is believed the acidity of loch triggered the disappearance of Salmo trutta. The recent observed reduction in the acidity of L. Enoch to a level close to that found in nearby lochs with trout populations, suggested that trout might now survive in L. Enoch. For a population to survive, all stages in the life-cycle of a species must be able to develop. Accordingly, tests were undertaken, first with eggs and fry. The availability of food was also studied. In October 1994, 3,000 yearling trout of L. Grannoch origin which had been reared in a local hatchery were distributed throughout the loch. The fish population was studied from 1995-98. The authors conclude that survival of the trout population is possible if the acidity of the loch water remains low.

Item Type: Article
Title: Restoration of a brown trout (Salmo trutta L.) population to Loch Enoch, an acified Loch in Galloway, South-West Scotland
Personal Creator/Author:
CreatorsEmail
Collen, Peter
Harriman, Ron
Morrison, B.R.S
Keay, Elspeth
Watt, Alan
Refereed: No
Journal or Publication Title: Freshwater Forum
Volume: 14
Page Range: pp. 3-14
Date: 2000
ISSN: 0961-4664
Issuing Agency: Freshwater Biological Association
Uncontrolled Keywords: Restoration; Stocks; Stock assessment; Freshwater lakes; Acidity; Scotland; Loch Enoch; Salmo trutta
Subjects: Ecology
Conservation
Limnology
Item ID: 4624
Depositing User: Hardy B Schwamm
Date Deposited: 30 Nov 2010 12:43
Last Modified: 29 Sep 2011 16:10
URI: http://aquaticcommons.org/id/eprint/4624

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