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Wider Application of the Electrical Method of Collecting Fish

 

作者: JohnL. Funk,  

 

期刊: Transactions of the American Fisheries Society  (Taylor Available online 1949)
卷期: Volume 77, issue 1  

页码: 49-60

 

ISSN:0002-8487

 

年代: 1949

 

DOI:10.1577/1548-8659(1947)77[49:WAOTEM]2.0.CO;2

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Limitations of the electrical-shock method of collecting fish, as commonly used, are reviewed. Among these are the facts that the equipment considered necessary is cumbersome and costly; that the method is effective only on quite narrow, clear-water streams; that effectiveness varies greatly with chemical content of soil and water; and that it is dangerous. Equipment and techniques that overcome these limitations to a greater or lesser extent are described. It has been found that less and more simple gear can be used effectively and safely. Methods of handling equipment which eliminate many time-consuming delays have been developed. Equipment and procedures which are fully satisfactory on wider streams and in turbid waters are described. An electric “seine,” effective in streams 90 to 100 feet wide, has been developed. By employing special techniques, it can be used quite effectively in wider streams. In turbid water the method is less efficient but quite satisfactory sampling of the fish population can be made.

 

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