Download or read book The 2008 Assessment of the Gulf of Maine Atlantic Cod Gadus Morhua Stock written by Ralph K. Mayo and published by . This book was released on 2009 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The 2005 Assessment of the Gulf of Maine Atlantic Cod Stock written by Ralph K. Mayo and published by . This book was released on 2006 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The status of the Gulf of Maine Atlantic cod (Gadus morhua) stock is reviewed, and terminal year VPA estimates of 2004 fishing mortality, spawning stock biomass and the survivors in 2005 are presented. Precision estimates of the 2004 fishing mortality and spawning stock biomass estimates for Gulf of Maine cod are also provided.

Download or read book Ecosystem Status Report for the Northeast U S Continental Shelf Large Marine Ecosystem written by Michael Fogarty and published by DIANE Publishing. This book was released on 2010-11 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish in U.S. waters from Cape Hatteras to the Canadian border have moved away from their traditional, long-time habitats over the past four decades because of fundamental changes in the regional ecosystem. During the past 40 years, the ecosystem has experienced extensive fishing by domestic and foreign fleets, changes in ocean water temperatures due to climate change, and pressures from increasing human populations along the coast. This report highlights the need to understand natural and human-related changes in this region and to develop effective management and mitigation strategies. These changes have been linked to changes in the distribution and abundance of fish species in the region and their major sources of food. Illus.

Download or read book A Report of the 33rd Northeast Regional Stock Assessment Workshop written by Ralph K. Mayo and published by . This book was released on 2002 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The status of the Gulf of Maine cod (Gadus morhua) stock is reviewed, and terminal year VPA estimates of 2000 fishing mortality and spawning stock biomass and the survivors in 2001 are presented. Precision estimates of the 2000 fishing mortality and spawning stock biomass estimates for Gulf of Maine cod are also provided. Short-term projections of 2002 catches and resulting 2003 spawning stock biomass at various levels of 2002 fishing mortality are also given. Long-term (25-yr) projections were conducted to evaluate relative trajectories of stock biomass and catch under various fishing mortality scenarios, and an age-structured production model was applied to estimate MSY-based reference points. The 2001 assessment is based on several sources of information including: the age composition of USA commercial and recreational landings, commercial fishing vessel trip reports (VTR), Northeast Fisheries Science Center (NEFSC) sea sample data, MRFSS estimates of recreational harvest, NEFSC and Massachusetts Division of Marine Fisheries (DMF) spring and autumn research vessel survey data, and standardized USA commercial fishing effort data. This assessment updates the analyses presented in the 1998 assessment of the Gulf of Maine cod stock (NEFSC 1998, Mayo et al. 1998) as well as those prepared in 1999 and 2000 by the Northern Demersal Working Group (NEFSC 2000, 2001).

Download or read book A Report of the 24th Northeast Regional Stock Assessment Workshop written by Ralph K. Mayo and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The status of the Gulf of Maine cod (Gadus morhua) stock is reviewed, and estimates of 1997 fishing mortality and spawning stock biomass and the 1998 survivors are presented. Precision of the 1997 fishing mortality and spawning stock biomass estimates for Gulf of Maine cod is also provided. Short-term projections of 1999 landings and resulting 2000 spawning stock biomass at sources of information including: USA landings-at-age estimates, Northeast Fisheries Science Center (NEFSC) and Massachusetts Division of Marine Fisheries (DMF) spring and autumn research vessel survey data, NEFSC sea sample data, and standardized USA commercial fishing effort data. This assessment updates the analyses presented in the 1997 assessment of the Gulf of Maine cod stock (Mayo 1998).

Download or read book Biology and Ecology of Atlantic Cod written by Nataliia Kulatska and published by CRC Press. This book was released on 2024-10-31 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlantic cod is an important fish species in human history and continues to be a major influence on North Atlantic fisheries management, as stock collapses and recoveries impact coastal communities and shelf sea food webs. This book provides an overview of Atlantic cod biology and ecology, focussing on regional differences in life-history and stock dynamics that affect productivity and the challenges faced by management. By comparing the success of management approaches and the local influence of changing climate and food webs, the book highlights the different pressures facing stocks and identifies knowledge gaps across the species’ range.

Download or read book Atlantic Cod written by George A. Rose and published by John Wiley & Sons. This book was released on 2019-02-26 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive handbook, covering all aspects of the Atlantic cod including the biology, ecology, life histories, behaviour, commercial exploitation and conservation Not only is Atlantic cod one of the most valuable food fish in the world’s oceans, it is an important component of North Atlantic ecosystems and has been subject to much research into its biology, ecology and exploitation. After hundreds of years of exploitation, overfishing in the last half of the 20th Century caused many stocks to collapse, most famously the Northern cod stock off Newfoundland and Labrador, Canada. Since then, most cod stocks have been better researched and managed, but remain in a variety of states, from fully recovered to continued decline. This book, written by world experts, describes that research and management, and the importance of cod and its fisheries on North Atlantic cultures and economies, with impacts well beyond the range of the species. Atlantic Cod: Bio-Ecology of the Fish offers insightful chapter coverage of cod nomenclature, taxonomy, phylogeny and morphology; physiology and ecophysiology; reproduction and spawning behavior; early life history and pre-recruitment processes; migrations, movements and stock identity; feeding, growth and energetics; the place of cod in the ecosystem; the exploitation of cod through history and present day commercial fisheries and precautionary management for sustainable fisheries; impacts of climate change on cod biology and ecology; and the future of the species and its fisheries. Discusses the major commercial importance of Atlantic cod through history Provides a comprehensive treatment of the bio-ecology of the most researched and highly exploited fully marine species Examines how the decline (and recovery) of cod stocks is of great political and scientific interest An essential purchase for marine fisheries scientists Atlantic Cod: Bio-Ecology of the Fish is a vital book for all fisheries scientists, managers and fish biologists.

Download or read book Assessment and Status of the Georges Bank and Gulf of Maine Atlantic Cod Stocks 1981 written by Fredric Michael Serchuk and published by . This book was released on 1981 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 2014 Assessment Update Report of the Gulf of Maine Atlantic Cod Stock written by Michael Collins Palmer and published by . This book was released on 2014 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This update of the Gulf of Maine cod stock assessment is a streamlined document that focuses on the primary assessment information required for management. The update incorporates recent commercial and recreational landings and discard data (2012 and 2013) and recent survey information (2012 - 2014 spring surveys; 2012 - 2013 autumn surveys) into the previously approved peer-reviewed model. This report is part of a larger effort to provide more timely information on stock status for all stocks in the Greater Atlantic Region. The May 2014 peer review of the Northeast Fisheries Science Center's stock assessment science program (NEFSC) highlighted the inherent problems of managing fisheries resources when time lags exist between contemporary data and subsequent management actions. Such problems are exacerbated when stock sizes are low because delays can be detrimental both to the resource and the long-term profitability of the fishery"--Preface.

Download or read book Assessment of the Gulf of Maine Cod Stock for 1994 written by Ralph K. Mayo and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecosystem Based Management for Marine Fisheries written by Andrea Belgrano and published by Cambridge University Press. This book was released on 2011-02-03 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Showing how big-picture patterns can help overcome the failures of conventional management, this book is ideal for students, researchers and professionals involved with marine fisheries. It explores not only the current practice of the 'ecosystem approach' to fisheries management but also its critical importance to even larger perspectives. The first section gives a valuable overview of how more and more of the complexity of real-world systems is being recognized and involved in the management of fisheries around the world. The second section then demonstrates how important aspects of real-world systems, involving population dynamics, evolution and behavior, remain to be taken into account completely. This section also shows how we must change the way we think about our involvement in, and the complexity of, marine ecosystems. The final chapters consider how, with the use of carefully chosen macroecological patterns, we can take important steps towards more holistic management of marine fisheries.

Download or read book Stock Identification Methods written by Steven X. Cadrin and published by Academic Press. This book was released on 2013-10-04 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stock Identification Methods, 2e, continues to provide a comprehensive review of the various disciplines used to study the population structure of fishery resources. It represents the worldwide experience and perspectives of experts on each method, assembled through a working group of the International Council for the Exploration of the Sea. The book is organized to foster interdisciplinary analyses and conclusions about stock structure, a crucial topic for fishery science and management. Technological advances have promoted the development of stock identification methods in many directions, resulting in a confusing variety of approaches. Based on central tenets of population biology and management needs, this valuable resource offers a unified framework for understanding stock structure by promoting an understanding of the relative merits and sensitivities of each approach. - Describes 18 distinct approaches to stock identification grouped into sections on life history traits, environmental signals, genetic analyses, and applied marks - Features experts' reviews of benchmark case studies, general protocols, and the strengths and weaknesses of each identification method - Reviews statistical techniques for exploring stock patterns, testing for differences among putative stocks, stock discrimination, and stock composition analysis - Focuses on the challenges of interpreting data and managing mixed-stock fisheries

Download or read book Predicting Future Oceans written by William Cheung and published by Elsevier. This book was released on 2019-08-17 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Predicting Future Oceans: Sustainability of Ocean and Human Systems Amidst Global Environmental Change provides a synthesis of our knowledge of the future state of the oceans. The editors undertake the challenge of integrating diverse perspectives—from oceanography to anthropology—to exhibit the changes in ecological conditions and their socioeconomic implications. Each contributing author provides a novel perspective, with the book as a whole collating scholarly understandings of future oceans and coastal communities across the world. The diverse perspectives, syntheses and state-of-the-art natural and social sciences contributions are led by past and current research fellows and principal investigators of the Nereus Program network. This includes members at 17 leading research institutes, addressing themes such as oceanography, biodiversity, fisheries, mariculture production, economics, pollution, public health and marine policy. This book is a comprehensive resource for senior undergraduate and postgraduate readers studying social and natural science, as well as practitioners working in the field of natural resources management and marine conservation. - Provides a synthesis of our knowledge on the future state of the oceans - Includes recommendations on how to move forwards - Highlights key social aspects linked to ocean ecosystems, including health, equity and sovereignty

Download or read book Perspectives on Oceans Past written by Kathleen Schwerdtner Máñez and published by Springer. This book was released on 2016-05-24 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine environmental history analyses the changing relationships between human societies and marine natural resources over time. This is the first book which deals in a systematic way with the theoretical backgrounds of this discipline. Major theories and methods are introduced by leading scholars of the field. The book seeks to encapsulate some of the major novelties of this fascinating new discipline and its contribution to the management, conservation and restoration of marine and coastal ecosystems as well as the cultural heritages of coastal communities in different parts of the world.

Download or read book The Seafood Industry written by Linda Ankenman Granata and published by John Wiley & Sons. This book was released on 2012-02-08 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Seafood Industry: Species, Products, Processing, and Safety, Second Edition is a completely updated and contemporary revision of Flick and Martin’s classic publication, The Seafood Industry. Covering all aspects of the commercial fish and shellfish industries – from harvest through consumption – the book thoroughly describes the commercial fishery of the western hemisphere. The international audience will also find the coverage accessible because, although species and regulations may differ, the techniques described are similar worldwide,. The second edition contains a significant expansion of the material included in the first edition. Examples include: high pressure processing; inclusion of additional major crustacean species of commerce; fishery centers and development programs; handling methods on fishing vessels; and new chapters on Toxins, Allergies, and Sensitivities; Composition and Quality; and Risk Management and HACCP; and Processing Fin Fish. The Seafood Industry: Species, Products, Processing, and Safety, comprehensive in scope and current with today’s issues, will prove to be a great asset to any industry professional or seafood technologist working in the field.

Download or read book Spawning Dynamics Seasonal Movements and Population Structure of Atlantic Cod Gadus Morhua in the Gulf of Maine written by Douglas Robert Zemeckis and published by . This book was released on 2016 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlantic cod (Gadus morhua) have been a principal target species in New England's ground fish fishery since the 17th century. In recent decades, the Gulf of Maine cod stock has experienced substantial declines in abundance, and many historical spawning components have been depleted, reducing stock productivity and stability. Managing stock rebuilding has been difficult because of many uncertainties in population dynamics. Therefore, to support stock rebuilding efforts, the objective of this dissertation was to improve our understanding of the spawning dynamics, seasonal movements, and population structure of Atlantic cod in the Gulf of Maine. An interdisciplinary review of the scientific literature demonstrated that the cod population off New England can be described as a metapopulation that includes genetically-distinct spring- and winter spawning subpopulations which are comprised of many finer-scale spawning components. Available information indicates that current management unit boundaries do not accurately represent the biological population structure. Therefore, a modification of current management units is recommended to provide a more accurate representation of the underlying biological population processes. Review of the cod spawning literature indicated that cod spawn in multiple locations and seasons, and the complex cod mating system can be described as a "lek". The aspects of cod spawning dynamics most important for consideration by fishery managers are the spatial and temporal extent ofspawning, the behavior of spawners, and the reproductive contributions of older age-classes. The application of spawning closures as part of a multidisciplinary approach to fisheries management is recommended to prevent disruption of spawning and extirpation of semi-discrete spawning components. Spawning site fidelity contributes to the formation and maintenance of the observed metapopulation structure and delays the recolonization of abandoned spawning sites by limiting reproductive connectivity. Acoustic telemetry was used to document prevalent, fine-scale spawning site fidelity with respect to an inshore spawning site in the western Gulf of Maine. Movements away from the inshore spawning site were studied using conventional tags, acoustic telemetry, and geolocation utilizing data from archival data storage tags. Connectivity was documented among multiple inshore spawning sites, which is apparently sufficient to promote gene flow within the western subpopulation. Cod were primarily residential within the western Gulf of Maine. After spawning inshore, cod moved to offshore feeding grounds from summer to early winter. Deep offshore basins served as overwintering habitat before initiation of an inshore spring spawning migration. Results from this dissertation have been valuable for informing fishery managers in the development of regulations to protect cod spawning aggregations. Findings are contributing to ongoing processes to investigate cod population structure and reevaluate current management units. This dissertation provides a more holistic understanding of cod population dynamics, which is expected to contribute to the development of future fishery management plans and stock assessment models that work towards achieving stock rebuilding.

Download or read book Advances in Marine Biology written by and published by Academic Press. This book was released on 2009-11-02 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Marine Biology has been providing in-depth and up-to-date reviews on all aspects of marine biology since 1963 -- over 40 years of outstanding coverage! The series is well-known for both its excellence of reviews and editing. Now edited by D.W. Sims (Marine Biological Association Laboratory, Plymouth, UK), with an internationally renowned Editorial Board, the serial publishes in-depth and up-to-date content on a wide range of topics that will appeal to postgraduates and researchers in marine biology, fisheries science, ecology, zoology, and biological oceanography. - Rated "Number 1" in the highly competitive category of Marine and Freshwater Biology by ISI in the 2000 ISI journals citation report - Maintains an Impact Factor of 3.37, the highest in the field - Series features over 35 years of coverage of the research