Author: John Simmonds
Publisher: John Wiley & Sons
ISBN: 0470995297
Category : Technology & Engineering
Languages : en
Pages : 456
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Book Description
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. The second edition of this widely used book covers the many technological developments which have occurred since the first edition; highly sophisticated sonar and computer processing equipment offer great new opportunities and Fisheries Acoustic, 2e provides the reader with a better understanding of how to interpret acoustic observations and put them to practical use. Well known and respected authors 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. All those involved with design and use of acoustic equipment. Libraries in research establishments, government stations and universities where fisheries science is studied or taught will find this a welcome addition to their shelves.
Author: I.L. Kalikhman
Publisher: CRC Press
ISBN: 1000611698
Category : Science
Languages : en
Pages : 311
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Book Description
Until now, there has not been any work that systematically presents the subject of acoustic fish reconnaissance, details all major aspects of applying acoustic equipment in commercial fish reconnaissance, and offers sufficient analysis of the effectiveness of fish-finding techniques. Acoustic Fish Reconnaissance responds to this need by providing t
Author: K. A. Johannesson
Publisher: Bernan Press(PA)
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 272
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Book Description
The manual begins with a presentation of key physical principles used in fisheries acoustics and continues with a general description of the necessary equipment and its functions. An explanation is given of the acoustic equations followed by the acoustic properties of fish when occurring singly or in schools. Acoustic survey concepts are discussed prior to a description of calibration methods used to determine the electronic and acoustic parameters of the equipment. Use of the equipment in a systematic manner at sea leads on to the sources of error that can arise and explains how these may be removed or minimised. Finally methods are given for the collection and presentation of data in various forms, together with different ways in which to improve results by the use of statistics.
Author: Northwest and Alaska Fisheries Center (U.S.)
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 464
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Book Description
Author: Louis Rey
Publisher: BRILL
ISBN: 900463147X
Category : Science
Languages : en
Pages : 645
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 598
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Book Description
Author: D.N. MacLennan
Publisher: Springer Science & Business Media
ISBN: 9401715580
Category : Science
Languages : en
Pages : 341
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 204
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Book Description
Author: John T. Tanacredi
Publisher: Springer Science & Business Media
ISBN: 1489901361
Category : Science
Languages : en
Pages : 197
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Book Description
There are many conferences, workshops and meetings annually around the world, each emphasizing a specialty area for scientific exploration and research. Yet in very few instances, if at all, do the multidisciplinary aspects of science get presented so one may see the diversity of dependencies these seemingly disparate disciplines actually have. The Explorers Club and the U. S. National Park Service collaborated to make a first attempt at what will continue to be an "ocean pulse'" effort; conferences combining the aquaculture sciences; the search for underwater antiquities and the marinelbio-technologies utilized to explore these areas. The purpose has been to bring together not just academicians to talk about their finding in the field or the laboratory, but to provide a forum for the practical applications of "technology" to expanding our worlds fisheries as well as to continue to explore our world's oceans; the earth's truly last frontier. After everything is said and done, we still know precious little about our ocean environments. Their influences on our lives are monumental and yet we continue to be very parochial and conservative in our dedication to exploring their depths and resources. We feel confident that this initial effort by our respective groups to awaken a realization in the public and private sectors of the need for a cross-disciplinary approach to scientific research in the marine environment, is a necessity as we approach the 21 st century. Kevin C.
Author: Gunnar Sætersdal
Publisher: Food & Agriculture Org.
ISBN: 9789251043776
Category : Business & Economics
Languages : en
Pages : 456
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Book Description
A review of surveys carried out with the research vessel, Dr. Fridtjof Nansen, from 1975 to mid-1993 in the Indian, Atlantic and Pacific Oceans. The document includes an overview of survey methodology and a description of the development of the acoustic equipment used and the associated problems. Particular emphasis is placed on the surveys in the Arabian Sea.
