Download or read book Bottom Trawl Surveys Design Operation and Analysis written by Marvin D. Grosslein and published by . This book was released on 1982 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Status and Management of Tropical Coastal Fisheries in Asia written by Geronimo Silvestre and published by WorldFish. This book was released on 1997 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Statistical Considerations in the Design of Trawl Surveys written by Michael J. Fogarty and published by . This book was released on 1985 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progressive Engineering Practices in Marine Resource Management written by Zlateva, Ivelina and published by IGI Global. This book was released on 2015-04-30 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is overwhelming evidence that marine resources are being overexploited throughout the world. In an effort to conserve the natural resources of the world’s oceans, new methods, technologies, and practices in fishery and marine resource management must be implemented. Progressive Engineering Practices in Marine Resource Management combines scientific, ecological, and engineering approaches involved in the sustainable management of natural resources. Featuring coverage on key topics relating to environmental management, maritime spatial planning, sustainable fisheries, and waste water treatment, this publication is a critical reference source for fishery associations, scientists, environmental management authorities, and water management directorates interested in emerging technologies and innovative resource management techniques.

Download or read book Some Simple Methods for the Assessment of Tropical Fish Stocks written by Daniel Pauly and published by Food & Agriculture Org.. This book was released on 1983 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This selection of methods is based on lecture notes used at a FAO/DANIDA training course held in Mombasa, Kenya, in May-June 1980. The methods presented are: regression and correlation, estimation of growth parameters from length-frequency data, estimation of mortalities (total, natural, fishing mortality) and analysis of catch and effort data. A brief annotated bibliography of tropical fish stock assessment is included.

Download or read book Operation Plan and Sampling Manual written by United States. National Marine Fisheries Service and published by . This book was released on 1998* with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book FAO Fisheries Technical Paper written by and published by . This book was released on 1998 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geographical Information Systems written by Geoffery J. Meaden and published by Food & Agriculture Org.. This book was released on 1996 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The late 20th century has witnessed increasing crises in the world's marine fisheries. A causal analysis of these reveals that a common element are various manifestations of spatial inequity. This most frequently includes the inequity of access rights to the resource, but factors such as variations in resource depletion, spatio-temporal variations in stock recruitment, the imposition of regulatory zoning, destruction of marine ecosystems and the siting of mariculture facilities are other examples. To resolve some of these problems, management practices must be improved. As has been shown in other fields where spatially related problems occur, there is now a promising tool, Geographical Information Systems (GIS), which, combined with other analytical tools and models, could allow for improved spatial management. GIS are basically integrated computer based systems which allow for the input of digital geo-referenced data to produce maps plus other textual, graphical and tabular output. The essential usefulness of GIS however, lies in its ability to manipulate data in a large number of ways and to perform various analytical functions so as to produce output which makes for more efficient decision making.As with many computer based systems, the key to GIS success lies in the acquisition of suitable data. The various means by which both primary and secondary data can be located, gathered, accessed and stored are described.

Download or read book Bottom Trawl Surveys written by W. G. Doubleday and published by Department of Fisheries and Oceans = Ministère des pêches et des océans. This book was released on 1981 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Data Analysis Procedures for Inshore Trawl Surveys written by National Institute of Water and Atmospheric Research (N.Z.) and published by . This book was released on 1999 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Trawling and Dredging on Seafloor Habitat written by National Research Council and published by National Academies Press. This book was released on 2002-08-09 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concerns over the potential ecological effects of fishing have increased with the expansion of fisheries throughout the marine waters of the United States. Effects of Trawling and Dredging on Seafloor Habitat describes how assessment of fishing impacts depends on gear type, number and location of bottom tows, and the physical and biological characteristics of seafloor habitats. Many experimental studies have documented acute, gear-specific effects of trawling and dredging on various types of habitat. These studies indicate that low mobility, long-lived species are more vulnerable to towed fishing gear than short-lived species in areas where the seabed is often disturbed by natural phenomena. Trawling and dredging may also change the composition and productivity of fish communities dependent on seafloor habitats for food and refuge. The scale of these impacts depends on the level of fishing effort. This volume presents color maps of fishing effort for all regions with significant bottom trawl or dredge fisheries-the first time that such data has been assembled and analyzed for the entire nation.

Download or read book Surveys of Fisheries Resources written by Donald R. Gunderson and published by John Wiley & Sons. This book was released on 1993-05-06 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Commences with a discussion of biological and statistical considerations involved in designing an effective survey. Examines sampling equipment and techniques used in conducting direct surveys with equal attention to trawl, acoustic, ichthyoplankton and sighting studies. Alternative approaches used in each type of survey are reviewed and numerous case histories illustrate successful applications.

Download or read book Documentation de la FAO written by and published by . This book was released on 1984 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bottom Trawl Surveys written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Retrospective Analysis of Suspiciously Small Catches in the National Marine Fisheries Service West Coast Triennial Bottom Trawl Survey written by Alaska Fisheries Science Center Nationa and published by BiblioGov. This book was released on 2013-06 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the 1970's the National Oceanic and Atmospheric Administration (NOAA) was made to manage our oceanic and atmospheric resources. The Alaska Fisheries Science Center is the research branch for marine life and coastal oceans off parts of the U.S. west coast and Alaska. This includes the Eastern Bering Sea where some the worlds most important commercial fishing takes place. Their mission is to develop and maintain scientific exploration to help understand and manage that region's environment. Over the years there have been many reports published which discuss their findings; this is one of them.

Download or read book Potential Impacts of OCS Oil and Gas Activities on Fisheries written by and published by . This book was released on 1989 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Northeast Fisheries Science Center Bottom Trawl Survey Protocols for the NOAA Ship Henry B Bigelow written by Philip J. Politis and published by . This book was released on 2014 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This document describes the standard operational protocols for conducting the Northeast Fisheries Science Center spring and autumn Multispecies Bottom Trawl Survey aboard the NOAA Ship Henry B. Bigelow. This manual documents current survey protocols and standard sampling gear implemented in spring 2009 after the 2008 survey calibration with the NOAA Ship Albatross IV and the NOAA Ship Henry B. Bigelow. It is intended to serve as a reference manual to ensure survey standardization and aid in the training of new personnel"--Executive summary.