Title: Automatic salmon counting technologies- a contemporary review
Author: G.A. Fewings
Document Type: Monograph
Abstract:
The development of automatic fish counters has been driven by the need for accurate, longterm and cost-effective stock assessment of adult Atlantic Salmon (Salmo salar L.). These developments have been facilitated by advances in computing and electronics. Non-invasive methods of fish counting are ultimately limited by the properties of the water in which the fish are immersed. To date, the three main detection and counting methods that have overcome these limitations are based upon acoustic, optical or electrical principles. For each of these methodologies, typical application, siting considerations and use limitations are discussed. Where available, estimates of accuracy and resolution of the methods are described, together with common problems found in the interpretation of fish counter data. Areas of future development are discussed in relation to their potential for Atlantic Salmon research. Conclusions are drawn on the present capabilities of fish counting systems and key features of these systems are compared to assist fish counter selection.
Publisher: Atlantic Salmon Trust
Publication Date: 1994
Publication Place: Pitlochry
Subject Keywords: Salmon fisheries; Fish counters; Technology; Acoustics; Optical properties; Electrical properties; Fish migration
Geographic Keywords: United Kingdom
Taxonomic Keywords: Salmo salar; Salmonidae
Extent: 66
Permalink: http://www.environmentdata.org/archive/ast:113
Total file downloads: 199
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