Fish Population Dynamics And Stock Assessment

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Fish Population Dynamics And Stock Assessment

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Author : N Jayakumar
language : en
Publisher: Daya Publishing House
Release Date : 2018

Fish Population Dynamics And Stock Assessment written by N Jayakumar and has been published by Daya Publishing House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.

Fisheries tend to collapse because of fleet over-capacity, leading to harvesting the stocks of fish beyond their ability to recover. On the other hand, fish stocks may also be under-utilized because of fleet under-capacity. The fishery managers have to strike a balance by directly controlling the fishing capacity (input control) and/or by setting restrictions on the catch (output control). The key factor in the success of striking this balance is the application of fisheries management based on scientific advice coming from results of stock assessment models. This book entitled "Fish Population Dynamics and Stock Assessment" has been written to meet the requirements of graduate, post graduate students, researchers and scientists in fish stock assessment. Written in a textbook form, this book encompasses the knowledge of principles of stock assessment, sampling techniques, age determination, growth parameters, mortality parameters, gear selection, stock assessment models, fisheries management etc. If this book could help and guide the students and researchers, we shall feel amply rewarded. The book contains 16 chapters that have been explained very clearly with numerous illustrative examples, leaving no scope for confusion.

Fish Population Dynamics In Tropical Waters

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Author : Daniel Pauly
language : en
Publisher: WorldFish
Release Date : 1984-01-01

Fish Population Dynamics In Tropical Waters written by Daniel Pauly and has been published by WorldFish this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984-01-01 with Nature categories.

Quantitative Fisheries Stock Assessment

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Author : R. Hilborn
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-12-01

Quantitative Fisheries Stock Assessment written by R. Hilborn and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-01 with Science categories.

This book really began in 1980 with our first microcomputer, an Apple II +. The great value of the Apple II + was that we could take the computer programs we had been building on mainframe and mini-computers, and make them available to the many fisheries biologists who also had Apple II + 's. About 6 months after we got our first Apple, John Glaister came through Vancouver and saw what we were doing and realized that his agency (New South Wales State Fisheries) had the same equipment and could run the same programs. John organized a training course in Australia where we showed about 25 Australian fisheries biologists how to use microcomputers to do many standard fisheries analyses. In the process of organizing this and sub sequent courses we developed a series of lecture notes. Over the last 10 years these notes have evolved into the chapters of this book.

Fish Population Dynamics And Stock Assessment Red Sea Egypt

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Author : Ashraf Sedeeq Mohammad
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2014-01

Fish Population Dynamics And Stock Assessment Red Sea Egypt written by Ashraf Sedeeq Mohammad and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-01 with categories.

Epinephelinae, represent one of the most important families in the Egyptian sector of the Red Sea Epinepheline or grouper are abundant, valuable and economical fish food. The present work has been suggested due to the rarity of biological, population dynamics, stock assessment and fisheries studies with respect to three Epinepheline species, Cephalopholis argus, Cephalopholis miniata and Variola louti from the Red Sea at Al- Quseir south of Hurghada by 140 Km, Egypt. The present work is a part of a project executed in Assiut University to study the biology and fisheries of the Red Sea fishes, so more advanced techniques and statistical methods were considered to answer a lot of important questions. The results of the present work can be summarized in the following points: 1. Identification of the stocks of C. argus, C. miniata and V. louti by: A) Scale characteristics. B) Morphometrics and meristics. 2. Growth in Weight of the three Epinepheline species. 3. Determination of the pattern of population dynamics and stock assessments of the three Epinepheline species considered. 4. Comparing the stock characteristics of the three Epinepheline species

Fish Population Dynamics Monitoring And Management

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Author : Ichiro Aoki
language : en
Publisher: Springer
Release Date : 2018-05-22

Fish Population Dynamics Monitoring And Management written by Ichiro Aoki and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-22 with Science categories.

This book explores how we can solve the urgent problem of optimizing the use of variable, uncertain but finite fisheries resources while maintaining sustainability from a marine-ecosystem conservation perspective. It offers readers a broad understanding of the current methods and theory for sustainable exploitation of fisheries resources, and introduces recent findings and technological developments. The book is divided into three parts: Part I discusses fish stock dynamics, and illustrates how ecological processes affecting life cycles and biological interactions in marine environments lead to fish stock variability in space and time in major fish groups; small pelagic fish, demersal fish and large predatory fish. These insights shed light on the mechanisms underlying the variability in fish stocks and form the essential biological basis for fisheries management. Part II addresses the technologies and systems that monitor changes in fisheries resources and marine ecosystems using two approaches: fishery-dependent and fishery-independent data. It also describes acoustic surveys and biological sampling, as well as stock assessment methods. Part III examines management models for effectively assessing the natural variability in fisheries resources. The authors explore ways of determining the allowable catch in response to changes in stock abundance and how to incorporate ecological processes and monitoring procedures into management models. This book offers readers a broad understanding of sustainable exploitation as well as insights into fisheries management for the next generation.

Fish Population Dynamics

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Author : J. A. Gulland
language : en
Publisher:
Release Date : 1988-11-17

Fish Population Dynamics written by J. A. Gulland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988-11-17 with Nature categories.

This new edition provides updated information on population dynamics of major food fishes, and reviews the various methods used to study quantitative impacts of fishing on fish stocks. Contributors provide an historical background of the subject, then go on to cover current theories and methods of stock assessment, how these theories and methods have been applied in practice, and the effects of fisheries management on fish populations. They discuss length-based methods of stock assessment, multi-species fisheries, and provide data on fish populations in the North Atlantic, the Irish Sea, off Australia, Southeast Asia, and other regions. Completely revised and updated, including several new chapters.

Lectures Notes

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Author : FAO AdriaMed
language : en
Publisher:
Release Date : 2002

Lectures Notes written by FAO AdriaMed and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.

Fish Stock Assessment

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Author : J. A. Gulland
language : en
Publisher:
Release Date : 1983-07-12

Fish Stock Assessment written by J. A. Gulland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983-07-12 with Nature categories.

Describes the scientific techniques used in assessing fish stocks, evaluating the effect of fishing on these stocks, and the probable impact of different policies for developing and managing fisheries. Covers the techniques developed starting with simple models and continuing to more complex methods.

Improving Fish Stock Assessments

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Author : Committee on Fish Stock Assessment Methods
language : en
Publisher: National Academies Press
Release Date : 1998-03-13

Improving Fish Stock Assessments written by Committee on Fish Stock Assessment Methods and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-03-13 with Technology & Engineering categories.

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.

Quantitative Fish Dynamics

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Author : Terrance J. Quinn
language : en
Publisher: Oxford University Press, USA
Release Date : 1999

Quantitative Fish Dynamics written by Terrance J. Quinn and has been published by Oxford University Press, USA this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Mathematics categories.

The fields of fish population dynamics and stock assessment have seen major advances in the 1980s and 1990s, creating the need for a new synthesis. This text attempts that synthesis by presenting a contemporary approach for quantitative fisheries science that incorporates modern statistical and mathematical techniques. It emphasizes the link between biology and theory by explaining the assumptions inherent in the quantitative methods and models. The book covers key topics that are often overlooked in other texts, such as optimal harvesting, migratory stocks, and complex age and size-structured models. Quantitative Fish Dynamics is an ideal textbook for graduate and undergraduate courses in fish population dynamics and stock assessment. It is an indispensable reference work for fisheries scientists and others interested in conservation biology, fish and wildlife management, population ecology, and statistical applications.