Download or read book Hydroacoustic Fishery Assessment Techniques written by Paul Kanciruk and published by . This book was released on 1985 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past few years, advances in hydroacoustic fishery assessment techniques have been rapid and significant, and these techniques have been successfully applied to a variety of open-ocean, estuarine, lake, and northwestern-river environments. This study was initiated to evaluate the usefulness of hydroacoustic techniques in large, alluvial river systems. The hydroacoustic equipment evaluated operated at a frequency of 420 kHz and included down- and side-facing transducers, dual-beam echo integrators, and digital recording equipment operated in mobile and stationary surveys. The equipment was applicable to a variety of habitats and survey objectives. It was found to be reliable, fairly easy to use (with adequate training), and provided information of fish abundance, distribution, and behavior patterns not easily attainable using conventional fishery assessment tools such as netting or electrofishing. The techniques worked well in this riverine environment and were not adversely affected by high turbidity and swift currents common around the dikes. In addition, the hydroacoustic equipment was able to provide information on sediment disturbance due to towboat passage and dredging, and potentially was able to characterize bottom sediment types. The major technical drawback to hydroacoustic techniques is their inability to identify fish species.
Download or read book Hydroacoustic Monitoring of Fish Movement in Clifton Court Forebay Outlet Channel written by and published by . This book was released on 2002 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Report written by and published by . This book was released on 1994 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acoustic Systems for the Assessment of Fisheries written by R. B. Mitson and published by . This book was released on 1984 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 1996 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alternative Energy and Shale Gas Encyclopedia written by Jay H. Lehr and published by John Wiley & Sons. This book was released on 2016-04-06 with total page 1922 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive depository of all information relating to the scientific and technological aspects of Shale Gas and Alternative Energy Conveniently arranged by energy type including Shale Gas, Wind, Geothermal, Solar, and Hydropower Perfect first-stop reference for any scientist, engineer, or student looking for practical and applied energy information Emphasizes practical applications of existing technologies, from design and maintenance, to operating and troubleshooting of energy systems and equipment Features concise yet complete entries, making it easy for users to find the required information quickly, without the need to search through long articles
Download or read book FAO Circulaire Sur Les P ches written by and published by . This book was released on 1984 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Journal on Hydropower Dams written by and published by . This book was released on 2008 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fish Passage Technologies written by and published by Office of Technology Assessment. This book was released on 1995 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Solutions to Environmental Challenges written by and published by . This book was released on 1993 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pacific Salmon written by and published by . This book was released on 1995 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Food Processing Technology written by P.J. Fellows and published by Elsevier. This book was released on 2009-06-22 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of Food processing technology was quickly adopted as the standard text by many food science and technology courses. This completely revised and updated third edition consolidates the position of this textbook as the best single-volume introduction to food manufacturing technologies available. This edition has been updated and extended to include the many developments that have taken place since the second edition was published. In particular, advances in microprocessor control of equipment, 'minimal' processing technologies, functional foods, developments in 'active' or 'intelligent' packaging, and storage and distribution logistics are described. Technologies that relate to cost savings, environmental improvement or enhanced product quality are highlighted. Additionally, sections in each chapter on the impact of processing on food-borne micro-organisms are included for the first time. - Introduces a range of processing techniques that are used in food manufacturing - Explains the key principles of each process, including the equipment used and the effects of processing on micro-organisms that contaminate foods - Describes post-processing operations, including packaging and distribution logistics
Download or read book Population Genetics and Fishery Management written by Nils Ryman and published by . This book was released on 2009-10 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first publication of "Population Genetics and Fishery Management" in 1987, significant technological, analytical, and conceptual changes have occurred. By explaining basic population genetics in a fisheries context, the text continues to serve as an excellent starting point for approaching complex recent developments.
Download or read book Fishes of Laos written by Maurice Kottelat and published by . This book was released on 2001 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Endangered Species Act Consultation Handbook written by and published by U.S. Government Printing Office. This book was released on 1998 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook provides internal guidance and establishes national policy for conducting consultation and conferences pursuant to section 7 of the Endangered Species Act of 1973, as amended. The purpose of the Handbook is to promote efficiency and nationwide consistency within and between the Services. The Handbook addresses the major consultation processes, including informal, formal, emergency, and special consultations, and conferences.
Download or read book Heavily Modified Water Bodies written by Eleftheria Kampa and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the results of thirty-four case studies in an EU-sponsored project on heavily modified water bodies. The account emphasizes the methods used in the process of identification and designation, and identifies further research needs. The contents are the basis for the agreed European Guidance on artificial and heavily modified water bodies to be used by practitioners in the implementation of the Water Framework Directive.
Download or read book Atlantic Salmon in Maine written by National Research Council and published by National Academies Press. This book was released on 2004-09-07 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the pervasive and substantial decline of Atlantic salmon populations in Maine over the past 150 years, and because they are close to extinction, a comprehensive statewide action should be taken now to ensure their survival. The populations of Atlantic salmon have declined drastically, from an estimated half million adult salmon returning to U.S. rivers each year in the early 1800s to perhaps as few as 1,000 in 2001. The report recommends implementing a formalized decision-making approach to establish priorities, evaluate options and coordinate plans for conserving and restoring the salmon.
