Proceedings of the International Symposium on Management Strategies for Exploited Fish Populations

Proceedings of the International Symposium on Management Strategies for Exploited Fish Populations PDF

Author: Gordon H. Kruse

Publisher: Alaska Sea Grant College Program

Published: 1993

Total Pages: 864

ISBN-13:

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Fisheries scientists from around the world met in 1992 to examine management practices and discuss strategies for improving management to preserve and/or increase output. This peer-reviewed proceedings includes papers on the role of information in the management process, harvest rate policies for single species fisheries, evaluation of management effectiveness, effects of variability and uncertainty, and socioeconomics and allocation.

Systemic Management

Systemic Management PDF

Author: Charles W. Fowler

Publisher: Oxford University Press

Published: 2009-03-26

Total Pages: 454

ISBN-13: 0199540969

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'Systemic management' describes a holistic, objective and universally applicable form of management, providing a framework for addressing environmental challenges such as global warming, emergent diseases, deforestation, overpopulation, the extinction crisis, pollution, over-fishing, and habitat destruction. Its goals are the consistently sustainable relationships between humans and ecosystems, between humans and other species, and between humans and the biosphere. This book presents a convincing argument that these goals, and the means to achieve them, can be inferred from empirical information. It describes how comparisons between humans and other species reveal patterns that can serve to guide management toward true sustainability i.e. ways that are empirically observed to work in natural systems. This objective approach has rarely been possible in conventional management because sustainability is invariably undermined by conflicting human values. 'Systemic management' is presented as a specialized process of pattern-based decision-making that avoids the inconsistency, subjectivity and error in current management practice. It clearly demonstrates how mimicking nature's empirical examples of sustainability can circumvent anthropocentric tendencies to overuse/misuse human values in management, and illustrates the science best suited for achieving sustainability through examples of research that address specific management questions.

Conservation of Exploited Species

Conservation of Exploited Species PDF

Author: John D. Reynolds

Publisher: Cambridge University Press

Published: 2001-10-18

Total Pages: 546

ISBN-13: 9780521787338

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The use of wildlife for food and other human needs poses one of the greatest threats to the conservation of biodiversity. Wildlife exploitation is also critically important to many people from a variety of cultures for subsistence and commerce. This book brings together international experts to examine interactions between the biology of wildlife and the divergent goals of people involved in hunting, fishing, gathering and culling wildlife. Reviews of theory show how sustainable exploitation is tied to the study of population dynamics, with direct links to reproductive rates, life histories, behaviour and ecology. As such theory is rarely put into practice to achieve sustainable use and effective conservation, Conservation of Exploited Species explores the many reasons for this failure and considers remedies to tackle them, including scientific issues such as how to incorporate uncertainty into estimations, as well as social and political problems that stem from conflicting goals in exploitation.

Improving Fish Stock Assessments

Improving Fish Stock Assessments PDF

Author: Committee on Fish Stock Assessment Methods

Publisher: National Academies Press

Published: 1998-03-13

Total Pages: 194

ISBN-13: 0309524326

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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 data--for example underreporting or changes in the likelihood that fish can be caught with a given type of gear--can seriously degrade the quality of stock assessments. The volume makes recommendations for means to improve stock assessments and their use in fishery management.

Proceedings of the North Pacific Symposium on Invertebrate Stock Assessment and Management

Proceedings of the North Pacific Symposium on Invertebrate Stock Assessment and Management PDF

Author: National Research Council Canada

Publisher: NRC Research Press

Published: 1998

Total Pages: 484

ISBN-13: 9780660172217

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Proceedings of a symposium that focused on new, innovative evaluation of the implications and needs for changing management approaches and demands in invertebrate fishery science. Species covered in the presentations include crustaceans, gastropods, echinoderms, and bivalves. Presentations are organized in the following subject areas: assessment of abundance and related parameters; growth, mortality, and yield per recruit; spatial pattern and its implications; the fishing process; population dynamics; the fishery as a selective force; invertebrate fisheries management; and regional perspectives from the north Pacific. The proceedings conclude with a symposium overview.

RAMAS Risk Calc 4.0 Software

RAMAS Risk Calc 4.0 Software PDF

Author: Scott Ferson

Publisher: CRC Press

Published: 2002-07-24

Total Pages: 246

ISBN-13: 9781566705769

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Many analysts use point estimates and ignore their uncertainty. But we can never be sure about the exact values of numbers based on data. And no practical calculations are without error, even though they may have the appearance of precision. RAMASâ Risk Calc 4.0 Software: Risk Assessment with Uncertain Numbers uses traditional methods such as probability theory and interval analysis and the newest techniques such as probability bounds analysis and fuzzy arithmetic to quantify uncertainty in risk assessments. It creates a convenient environment for computing in which all uncertainties are carried forward automatically. Providing examples in four major application areas, Risk Calc brings sophisticated methods of uncertainty analysis into the reach of anyone who can do arithmetic on a calculator.

Climate Change and Northern Fish Populations

Climate Change and Northern Fish Populations PDF

Author: National Research Council Canada

Publisher: NRC Research Press

Published: 1995

Total Pages: 756

ISBN-13: 9780660157801

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These documents summarize some of the recent studies of the relationships among climate, the aquatic environment, and the dynamics of fish populations. The studies are mostly from the North Pacific ocean, but there are reports of investigations from the North Atlatic Ocean and from fresh water. Various papers include numerous examples of the relationships between fish abundance trends and the environment.

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