The Fishery For Scup With Special Reference To Fluctuations In Yield And Their Causes Classic Reprint

Author : William C. Neville
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.04/5 ( download)

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Download or read book The Fishery for Scup with Special Reference to Fluctuations in Yield and Their Causes written by William C. Neville and published by . This book was released on 1963 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The catch of scup over the past 50 years has fluctuated widely. Data on this fishery for recent years (1922-35), obtained from State and Federal agencies, commercial fishery, and fishermen, have been analysed to determine causes of fluctuations. It was found that fluctuations in the summer fishery from New Jersey to Massachusetts were caused mainly by differences in the size of the successive year classes entering the fishery. Fluctuations in the catch of the winter trawl fishery off the Virginia Capes resulted from changes in the amount of cooling of the bottom water where these fish are found in winter. During cold-water conditions, the fish became more concentrated and were more easily caught; whereas, when the water was warmer, the fish scattered more widely and were not as readily available. Although fluctuations in catch of the summer and winter fishery have different causes, results of tagging and observations of size composition have disclosed that both fisheries draw on the same general stock.

Author : William C. Neville
Publisher : Forgotten Books
ISBN 13 : 9780332439129
Total Pages : 74 pages
Book Rating : 4.27/5 ( download)

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Download or read book The Fishery for Scup With Special Reference to Fluctuations in Yield and Their Causes (Classic Reprint) written by William C. Neville and published by Forgotten Books. This book was released on 2017-12-05 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Fishery for Scup With Special Reference to Fluctuations in Yield and Their Causes Scup (fig. 1) ranges along the eastern coast of the United States from South Carolina to Maine (holbrook, 1855; Bigelow and Welsh, South of New York scup is commonly known as porgy, and along the southern part of New England, as scup. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Author : M. C. Mercer
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.58/5 ( download)

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Download or read book Multispecies Approaches to Fisheries Management Advice written by M. C. Mercer and published by . This book was released on 1982 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication comprises the proceedings of an international workshop convened in St. John's, Nfld, Nov. 26-29, 1979. The purpose of the workshop was to discuss the results of recent multispecies research, its applications to management, and to consider future directions for research in this field. A total of 26 papers were presented, including a combination of experience papers, state-of-the-art review, and new scientific findings. Sequential sessions were held on fisheries systems research by the Department of Fisheries and Oceans, multispecies considerations in fisheries research and management advice in the ICES area, species interactions in the Northeast Pacific and Northwest Atlantic, fisheries interactions, and applications to fisheries management. The workshop concluded with a substantial discussion of implications of present knowledge for advice to fisheries managers and implications for research program planning. The Workshop Report comprises the Chairman's opening remarks, a report on main elements of discussion in the sessions, and a summarization of workshop conclusions.

Author : Gene Helfman
Publisher : John Wiley & Sons
ISBN 13 : 1444311905
Total Pages : 736 pages
Book Rating : 4.07/5 ( download)

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Download or read book The Diversity of Fishes written by Gene Helfman and published by John Wiley & Sons. This book was released on 2009-04-03 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of The Diversity of Fishes represents a major revision of the world’s most widely adopted ichthyology textbook. Expanded and updated, the second edition is illustrated throughout with striking color photographs depicting the spectacular evolutionary adaptations of the most ecologically and taxonomically diverse vertebrate group. The text incorporates the latest advances in the biology of fishes, covering taxonomy, anatomy, physiology, biogeography, ecology, and behavior. A new chapter on genetics and molecular ecology of fishes has been added, and conservation is emphasized throughout. Hundreds of new and redrawn illustrations augment readable text, and every chapter has been revised to reflect the discoveries and greater understanding achieved during the past decade. Written by a team of internationally-recognized authorities, the first edition of The Diversity of Fishes was received with enthusiasm and praise, and incorporated into ichthyology and fish biology classes around the globe, at both undergraduate and postgraduate levels. The second edition is a substantial update of an already classic reference and text. Companion resources site This book is accompanied by a resources site: www.wiley.com/go/helfman The site is being constantly updated by the author team and provides: · Related videos selected by the authors · Updates to the book since publication · Instructor resources · A chance to send in feedback

Author : Food and Agriculture Organization of the United Nations. Marine Resources Service
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251034712
Total Pages : 148 pages
Book Rating : 4.10/5 ( download)

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Download or read book Review of the State of World Marine Fishery Resources written by Food and Agriculture Organization of the United Nations. Marine Resources Service and published by Food & Agriculture Org.. This book was released on 1994 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document provides a review, commentary and tabulations of the main trends that have occurred in exploitation of fisheries resources since the 1970s, largely as they are reflected in the FAO database on fishery landings, supplemented with selected information from the fishery literature. Reviews were prepared separately for the 15 main areas into which FAO divides the world's oceans for statistical purposes. They are then compared from a global perspective to reveal relative trends by species and areas, which are highlighted. Several special topics are reviewed, including tuna and tuna-like species, whales and dolphins, and environmental issues in fisheries.

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309152313
Total Pages : 191 pages
Book Rating : 4.10/5 ( download)

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Download or read book Ecosystem Concepts for Sustainable Bivalve Mariculture written by National Research Council and published by National Academies Press. This book was released on 2010-03-18 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: U.S. mariculture production of bivalve molluscs-those cultivated in the marine environment-has roughly doubled over the last 25 years. Although mariculture operations may expand the production of seafood without additional exploitation of wild populations, they still depend upon and affect natural ecosystems and ecosystem services. Every additional animal has an incremental effect arising from food extraction and waste excretion. Increasing domestic seafood production in the United States in an environmentally and socially responsible way will likely require the use of policy tools, such as best management practices (BMPs) and performance standards. BMPs represent one approach to protecting against undesirable consequences of mariculture. An alternative approach to voluntary or mandatory BMPs is the establishment of performance standards for mariculture. Variability in environmental conditions makes it difficult to develop BMPs that are sufficiently flexible and adaptable to protect ecosystem integrity across a broad range of locations and conditions. An alternative that measures performance in sustaining key indicators of ecosystem state and function may be more effective. Because BMPs address mariculture methods rather than monitoring actual ecosystem responses, they do not guarantee that detrimental ecosystem impacts will be controlled or that unacceptable impact will be avoided. Ecosystem Concepts for Sustainable Bivalve Mariculture finds that while performance standards can be applied for some broad ecosystem indicators, BMPs may be more appropriate for addressing parameters that change from site to site, such as the species being cultured, different culture methods, and various environmental conditions. This book takes an in-depth look at the environmental, social, and economic issues to present recommendations for sustainable bivalve mariculture.

Author : Martin Lewis Hall Thomas
Publisher :
ISBN 13 :
Total Pages : 324 pages
Book Rating : 4.41/5 ( download)

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Download or read book Marine and Coastal Systems of the Quoddy Region, New Brunswick written by Martin Lewis Hall Thomas and published by . This book was released on 1983 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book describes the main marine and coastal biological systems of Passamaquoddy Bay and adjacent waters and the oceanographic and meteorological characteristics of the area. Subject areas begin with meteorolgy and oceanography. The second group covers the intertidal systems with chapters on rocky intertidal shores, rock pools, coarse sedimentary shores and salt marshes. The third general section covers hard and sedimentary sublittoral habitats. Following chapters discuss pelagic systems under the headings fishes, phytoplankton, larger zooplankton, and microzooplankton. Three chapters deal with the birds, amphibians and reptiles, and marine mammals. Finally coastal vegetation is described.

Author : G.T.O LeBreton
Publisher : Springer Science & Business Media
ISBN 13 : 1402028334
Total Pages : 336 pages
Book Rating : 4.35/5 ( download)

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Download or read book Sturgeons and Paddlefish of North America written by G.T.O LeBreton and published by Springer Science & Business Media. This book was released on 2006-01-20 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern North American sturgeons and paddlefish are the result of 100 million years of evolution. Once an integral part of aboriginal culture, their numbers were decimated by overfishing and habitat destruction during the past two centuries. This book details the extensive science aimed at helping these remarkable species recover from the brink of extinction, and describes the historical, biological, and ecological importance of North American sturgeon and paddlefish. The text is enhanced by photographs and detailed line drawings. This comprehensive volume will be an invaluable resource for researchers, educators, and consultants, in academic and government settings, who work to further scientific understanding of these fishes. No other single compilation has documented current information in such detail.

Author : Michael Graham
Publisher :
ISBN 13 :
Total Pages : 536 pages
Book Rating : 4.78/5 ( download)

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Download or read book Sea Fisheries Research written by Michael Graham and published by . This book was released on 1974 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Get what you need from your boss In this follow-up to the bestselling It's Okay to Be the Boss, Bruce Tulgan argues that as managers demand more and more from their employees, they are also providing them with less guidance than ever before. Since the number one factor in employee success is the relationship between employees and their immediate managers, employees need to take greater responsibility for getting the most out of that relationship. Drawing on years of experience training managers and employees, Tulgan reveals the four essential things employees should get from their bosses to guarantee success at work. Shows employees how to ask for what they need to succeed in their high-pressure jobs. Shatters previously held beliefs about how employees should manage up. Outlines what employees must get from their managers: clear expectations; the skills needed to perform their jobs; honest feedback, recognition or rewards. A novel approach to managing up, It's Okay to Manage Your Boss is an invaluable resource for employees who want to work more effectively with their managers."--

Author : William Cothren
Publisher :
ISBN 13 :
Total Pages : 864 pages
Book Rating : 4.01/5 ( download)

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Download or read book History of Ancient Woodbury, Connecticut written by William Cothren and published by . This book was released on 1854 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt: