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23 de ene. de 2006 · Emphasis on practical acoustic methods; Detailed coverage of a commercially and environmentally important subject; A vital tool for fisheries scientists, fisheries oceanographers,...
2 de ago. de 2005 · Living resources of the sea and fresh water have long been an important source of food and economic activity. With fish stocks continuing to be over-exploited, there is a clear focus on fisheries management, to which acoustic methods can and do make an important contribution.
Emphasis on practical acoustic methods. Detailed coverage of a commercially and environmentally important subject. A vital tool for fisheries scientists, fisheries oceanographers, environmental biologists, ecologists, population biologists, fish biologists, and marine biologists.
Rev. ed. of: Fisheries acoustics/David N. MacLennan, E. John Simmonds. 1992. Includes bibliographical references and index. ISBN-10: 0-632-05994-X (hardback: alk. paper)
Book Title: Fisheries Acoustics. Authors: David N. MacLennan, E. John Simmonds. Series Title: Fish & Fisheries Series. DOI: https://doi.org/10.1007/978-94-017-1558-4. Publisher: Springer Dordrecht. eBook Packages: Springer Book Archive. Copyright Information: David N. MacLennan and E. John Simmonds 1992
Plate 3.1 Echogram displayed on a colour printer showing low density aggregations of small fish in Oslo Fjord, Norway.Simrad EK500 echosounder,38kHz frequency and 40 log R time-varied-gain.Vertical scale 0–100m depth.Numbers printed on the echogram show (left column) measured target strengths of indi-vidual scatters and (right column) echo ...
23 de ene. de 2006 · Emphasis on practical acoustic methods. Detailed coverage of a commercially and environmentally important subject. A vital tool for fisheries scientists, fisheries oceanographers, environmental biologists, ecologists, population biologists, fish biologists, and marine biologists.
