Download or read book Review of New Zealand s Scallop Fishery Stock Assessment Data and Methods written by Stephen A. Smith and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of Northeast Fishery Stock Assessments written by Committee to Review Northeast Fishery Stock Assessments and published by National Academies Press. This book was released on 1998-05-01 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collapse of cod, flounder, and haddock fish stocks in the Northeast United States has caused widespread concern among managers and fishers in the United States and Canada. The diminishing stocks have forced managers to take strict regulatory measures. Numerous questions have been raised about the adequacy of stock assessment science used to evaluate the status of these stocks and the appropriateness of the management measures taken. Based on these concerns, Congress mandated that a scientific review of the methodology and data used to evaluate these stocks be conducted. In this volume, the committee concludes that although there are improvements to be made in data collection, modeling uncertainty, and communicating between fishers, managers, and scientists, the scientific methods used in the Northeast stock assessments are sound. Recommendations are made on how the stock assessment process can be improved.
Download or read book A Survey of Stock Assessment Methods and Results written by Pamela M. Mace and published by . This book was released on 1988 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improving Fish Stock Assessments written by National Research Council and published by National Academies Press. This book was released on 1998-02-27 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Review of Data poor Assessment Methods for New Zealand Fisheries written by Charles T. T. Edwards and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stock Assessment for Fishery Management written by Daniel D. Hoggarth and published by Food & Agriculture Org.. This book was released on 2006 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains guidelines for fish stock assessment and fishery management using the software tools and other outputs developed by the UK Department for International Development's Fisheries Management Science Programme (FMSP) from 1992 to 2004. It includes a CD-ROM with the installation files for each of the four FMSP software tools: LFDA (Length Frequency Data Analysis), CEDA (Catch Effort Data Analysis), YIELD and ParFish (Participatory Fisheries Stock Assessment).
Download or read book Marine Fisheries Ecology written by Simon Jennings and published by John Wiley & Sons. This book was released on 2009-04-01 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: This topical and exciting textbook describes fisheries exploitation, biology, conservation and management, and reflects many recent and important changes in fisheries science. These include growing concerns about the environmental impacts of fisheries, the role of ecological interactions in determining population dynamics, and the incorporation of uncertainty and precautionary principles into management advice. The book draws upon examples from tropical, temperate and polar environments, and provides readers with a broad understanding of the biological, economic and social aspects of fisheries ecology and the interplay between them. As well as covering 'classical' fisheries science, the book focuses on contemporary issues such as industrial fishing, poverty and conflict in fishing communities, marine reserves, the effects of fishing on coral reefs and by-catches of mammals, seabirds and reptiles. The book is primarily written for students of fisheries science and marine ecology, but should also appeal to practicing fisheries scientists and those interested in conservation and the impacts of humans on the marine environment. particularly useful are the modelling chapters which explain the difficult maths involved in a user-friendly manner describes fisheries exploitation, conservation and management in tropical, temperate and polar environments broad coverage of 'clasical' fisheries science emphasis on new approaches to fisheries science and the ecosystem effects of fishing examples based on the latest research and drawn from authors' international experience comprehensively referenced throughout extensively illustrated with photographs and line drawings
Download or read book Scallops written by Sandra E. Shumway and published by Elsevier. This book was released on 2016-06-07 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scallops: Biology, Ecology, Aquaculture and Fisheries, Third Edition, continues its history as the definitive resource on scallops, covering all facets of scallop biology, including anatomy, taxonomy, physiology, ecology, larval biology, and neurobiology. More than thirty extensive chapters explore both fisheries and aquaculture for all species of scallops in all countries where they are fished or cultured. This treatise has been updated to include the most recent advances in research and the newest developments within the industry. As aquaculture remains one of the fastest-growing animal food-producing sectors, this reference becomes even more vital. It has all the available information on scallops needed to equip researchers to deal with the unique global issues in the field. - Offers 30 detailed chapters on the development and ecology of scallops - Provides chapters on various cultures of scallops in China, Japan, Scandinavia, Europe, Eastern North America, and Western North America - Includes details of scallop reproduction, nervous system, and behavior, genetics, diseases, parasites, and much more - Completely updated edition with valuable information on one of the most widely distributed shellfish in the world
Download or read book Review written by and published by . This book was released on 2000 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developing a Data poor Stock Assessment Model for New Zealand Bycatch Species written by Callum Templeton and published by . This book was released on 2016 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigated methods pertaining to the assessment of data-poor fishery stocks within New Zealand. Recent modelling approaches (termed ‘N-mixture’) have appeared in the ecological literature that enable simultaneous estimation of abundance and detectability (gear efficiency in a fisheries context) from count data corresponding to a population of interest. This approach forms part of the quantitative risk assessment framework known as Sustainability Assessment for Fishing Effects, which has been applied to a range of species in Australian fisheries. There is potential for application of such methods in New Zealand, where an estimated 80% of fish stocks lack assessment under the Quota Management System. Various models were developed as part of this study in order to obtain quantitative estimates relating to catchability and abundance. These involved a mixture of statistical distributions (log-normal, Poisson, and binomial) and were implemented in the R and JAGS software. A range of simulations were devised to produce artificial data sets for model validation and analysis purposes. Models were analysed using a Bayesian hierarchical approach in order to estimate the parameters of interest. The models under investigation were also applied to red gurnard (Chelidonichthys kumu) data from the GUR 1 stock management area in northeastern New Zealand, to provide a case study for real-world applicability. Model validation revealed that recovering estimates of gear efficiency and abundance was possible using the approach considered here. Analysis simulations provided information regarding the potential sources of bias, variability and incompatibility arising from assumptions in model specification and data generation. These findings were also considered in the context of application to red gurnard. The most important issues highlighted by this study include the role of over-dispersion on modelling and data requirements, handling zeroinflated data sets, and bias introduced from catch reporting procedures in commercial fisheries within New Zealand. The results of this study provide an important first step in assessing data-poor stocks, providing a cost-effective means of obtaining key fishing parameters without significant data requirements. Further research into this area will enable these findings to be applied alongside other methods in order to gauge the sustainability of fishing impacts on bycatch species.
Download or read book Stock Assessment written by Vincent F. Gallucci and published by CRC Press. This book was released on 1995-10-25 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stock Assessment: Quantitative Methods and Applications for Small Scale Fisheries is a book about stock assessment as it is practiced. It focuses on applications for small scale or artisanal fisheries in developing countries, however it is not limited in applicability to tropical waters and should also be considered a resource for students of temperate fishery management problems. It incorporates a careful sample design, various mathematical models as a basis for predicting consequences for stock exploitation, and discusses the impact of exploitation on non-targeted species. This was a unique concept involving a collaborative effort between U.S. and host country scientists to address issues of regional and global concern through innovative research. Unlike other books on stock assessment that show mathematical models, this is the only book of its kind that discusses how an assessment is carried out. It looks at the field as a whole and includes sampling, age determination and acoustics. The book represents the culmination of a nine-year program financed by the United States Agency for International Development to provide new or improved methods of stock assessment for artisanal fisheries.
Download or read book Stock Assessment written by Vincent F. Gallucci and published by CRC Press. This book was released on 2023-05-31 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stock Assessment: Quantitative Methods and Applications for Small Scale Fisheries is a book about stock assessment as it is practiced. It focuses on applications for small scale or artisanal fisheries in developing countries, however it is not limited in applicability to tropical waters and should also be considered a resource for students of temperate fishery management problems. It incorporates a careful sample design, various mathematical models as a basis for predicting consequences for stock exploitation, and discusses the impact of exploitation on non-targeted species. This was a unique concept involving a collaborative effort between U.S. and host country scientists to address issues of regional and global concern through innovative research. Unlike other books on stock assessment that show mathematical models, this is the only book of its kind that discusses how an assessment is carried out. It looks at the field as a whole and includes sampling, age determination and acoustics. The book represents the culmination of a nine-year program financed by the United States Agency for International Development to provide new or improved methods of stock assessment for artisanal fisheries.
Download or read book Bay of Fundy Scallop Analytical Stock Assessment and Data Review 1981 1994 written by E. Kenchington and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomass Survey and Stock Assessment for the Coromandel Scallop Fishery 2008 written by James Richard Williams and published by . This book was released on 2009 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomass Survey and Stock Assessment for the Coromandel Scallop Fishery 2010 written by J. R. Williams and published by . This book was released on 2010 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomass Survey and Stock Assessment for the Coromandel Scallop Fishery 2009 written by James Richard Williams and published by . This book was released on 2010 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Papers from the Workshop to Review Fish Stock Assessments for the 1987 88 New Zealand Fishing Year written by John Leslie McKoy and published by . This book was released on 1988 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
