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Author: Barry L. Johnson
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 18
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Book Description
Author: Barry L. Johnson
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 18
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Book Description
Author: Lee G. Anderson
Publisher: Routledge
ISBN: 1351757318
Category : Technology & Engineering
Languages : en
Pages : 371
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Book Description
This title was first published in 2002: This important collection of international research on fisheries economics offers a comprehensive source of contemporary research on key topics in the field, as well as presenting the history of how the economic theory of fisheries exploitation has developed. Bringing into focus a wide range of inquiry, this volume concentrates most particularly on the traditional economic problem of optimal resource allocation. Individual papers examine fundamental issues including, the lack of efficiency of open access and the specification of exactly what dynamic efficiency entails. Fisheries Economics is an invaluable research reference collection for the libraries of academic and other professional economists, as well as an indispensable resource for those studying across the fields of natural resources, fisheries economics and particularly fisheries management.
Author: T.J. Pitcher
Publisher: Springer Science & Business Media
ISBN: 9401144338
Category : Science
Languages : en
Pages : 440
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Book Description
Judged by a dismaying track record and a consequent downturn in the reputation of fisheries scientists, fisheries management is certainly a candidate for calls for reinvention, with many of the world leaders in this area holding the view that no fishery has ever been properly understood or managed. With fisheries science in a state of flux, this extremely important book seeks a new paradigm that will place this flux of ideas in perspective and help us to choose those that will make fisheries management work. The book was planned at a symposium of over 100 fishery researchers at the Fisheries Centre, University of British Columbia, Vancouver, Canada and is organized into five parts: Why does Fisheries Science Need Reinventing?; New Policies; The Role of the Social Sciences; Ecology; Modelling. Carefully integrated and edited by three of the world's leading fishery scientists, this stimulating book should find a place on the shelves of all fishery scientists throughout the world. It will be an invaluable reference source to those studying fish biology, fisheries and oceanography and all those involved in fisheries policy decisions in government and university research establishments.
Author:
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 1092
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309174406
Category : Technology & Engineering
Languages : en
Pages : 194
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Book Description
Ocean harvests have plateaued worldwide and many important commercial stocks have been depleted. This has caused great concern among scientists, fishery managers, the fishing community, and the public. This book evaluates the major models used for estimating the size and structure of marine fish populations (stock assessments) and changes in populations over time. It demonstrates how problems that may occur in fisheries dataâ€"for example underreporting or changes in the likelihood that fish can be caught with a given type of gearâ€"can seriously degrade the quality of stock assessments. The volume makes recommendations for means to improve stock assessments and their use in fishery management.
Author: John F. Craig
Publisher: John Wiley & Sons
ISBN: 0470695285
Category : Technology & Engineering
Languages : en
Pages : 371
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Book Description
The percid fishes (or perch family) comprise many species including the perch, pikeperch, yellow perch, walleye and the darters. These species are of great ecological and economic importance, being important components of the freshwater ecosystem and recreational and commercial fisheries. Percid Fishes covers aspects such as systematics, morphology, biology, ecology, diseases and parasites and the economic importance of percid fisheries. Special emphasis is placed within the book on the complex relationship between this family of fishes and their environment and how they respond to perturbations, especially those induced by humans. The author, John Craig who has a great deal of experience working on these fishes in many of the countries in which they occur, has drawn together an extremely important book which provides a unique, comprehensive and indispensable review of this most significant group of fish.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309055261
Category : Technology & Engineering
Languages : en
Pages : 189
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Book Description
Fluctuations and declines in marine fish populations have caused growing concern among marine scientists, fisheries managers, commercial and recreational fishers, and the public. Sustaining Marine Fisheries explores the nature of marine ecosystems and the complex interacting factors that shape their productivity. The book documents the condition of marine fisheries today, highlighting species and geographic areas that are under particular stress. Challenges to achieving sustainability are discussed, and shortcomings of existing fisheries management and regulation are examined. The volume calls for fisheries management to adopt a broader ecosystem perspective that encompasses all relevant environmental and human influences. Sustaining Marine Fisheries offers new approaches to building workable fisheries management institutions, improving scientific data, and developing management tools. The book recommends ways to change current practices that encourage overexploitation of fish resources. It will be of special interest to marine policymakers and ecologists, fisheries regulators and managers, fisheries scientists and marine ecologists, fishers, and concerned individuals.
Author: Kristin Privitera-Johnson
Publisher:
ISBN:
Category :
Languages : en
Pages : 105
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Book Description
Stock assessment plays an important role in the broad field of risk management by providing a means to link scientific uncertainty to consequences of management actions, such as overfishing. The first chapter of this thesis reviews the methods and tools used to quantify scientific uncertainty and their relationship to the presentation of uncertainty to fisheries managers. I found that scientific uncertainty is being quantified and included in scientific advice across multiple fishery management systems. The second chapter relates to quantifying the scientific uncertainty used to set catch limits for US west coast groundfish and coastal pelagic species fisheries. This system serves as a good case study because the harvest control rule for reducing the overfishing limit to account for scientific uncertainty is based on the Pacific Fishery Management Council’s risk tolerance (i.e., the probability of overfishing) and a measure of scientific uncertainty (i.e., model specification based on among assessment variation). My approach bases the calculation of this uncertainty on projected overfishing limits, accounting for uncertainty in future recruitment as well as among-assessment variation. Methods for quantifying uncertainty and their incorporation into management advice are quickly advancing and approaches for reviewing progress towards clearly and explicitly communicating the sources, treatment, and impacts of uncertainty in our management processes must keep pace.
Author:
Publisher:
ISBN:
Category : Aquatic sciences
Languages : en
Pages : 774
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Book Description
Author: Philip Roni
Publisher: Food & Agriculture Org.
ISBN: 9789251053546
Category : Business & Economics
Languages : en
Pages : 140
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Book Description
This technical paper reviews current information on the effectiveness of habitat rehabilitation techniques for inland fisheries, based on published evaluations of projects including studies on roads improvements and sediment reduction, riparian and floodplain rehabilitation, placement of habitat structures in lakes and streams, and the addition of nutrients to increase aquatic production. It also sets out information on planning, prioritising and monitoring rehabilitation projects.
