Discards in the World's Marine Fisheries
Discards in the World's Marine Fisheries

Author: Kieran Kelleher

Publisher: Food & Agriculture Org.

Published: 2005

Total Pages: 156

ISBN-13: 9789251052891

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This publication gives an updated review of the quantity of discards in the world's marine fisheries, using information from a broad range of fisheries in all continents. A number of policy issues are discussed including a 'no discards' approach to fisheries management, the need for balance between bycatch reduction and bycatch utilisation initiatives, and concerns arising from incidental catches of marine mammals, birds and reptiles. The report also highlights the need for more robust methods of estimating discards, and the development of bycatch management plans.

Improving Fish Stock Assessments
Improving Fish Stock Assessments

Author: National Research Council

Publisher: National Academies Press

Published: 1998-02-27

Total Pages: 194

ISBN-13: 0309174406

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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 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.

Climate Change Implications for Fisheries and Aquaculture
Climate Change Implications for Fisheries and Aquaculture

Author: K. L. Cochrane

Publisher: Food & Agriculture Organization of the UN (FAO)

Published: 2009

Total Pages: 0

ISBN-13: 9789251063477

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An overview of the current scientific knowledge available on climate change implications for fisheries and aquaculture is provided through three technical papers that were presented and discussed during the Expert Workshop on Climate Change Implications for Fisheries and Aquaculture (Rome, 7-9 April 2008). A summary of the workshop outcomes as well as key messages on impacts of climate change on aquatic ecosystems and on fisheries- and aquaculture-based livelihoods are provided in the introduction of this Technical Paper. The first paper reviews the physical and ecological impacts of climate change relevant to marine and inland capture fisheries and aquaculture. The paper begins with a review of the physical impacts of climate change on marine and freshwater systems and then connects these changes with observed effects on fish production processes. It also outlines a series of scenarios of climate change impacts on fish production and ecosystems through case studies in different regions and ecosystems. The second paper tackles the consequences of climate change impacts on fisheries and their dependent communities. It analyses the exposure, sensitivity and vulnerability of fisheries to climate change and presents examples of adaptive mechanisms currently used in the sector. The contribution of fisheries to greenhouse gas emissions is addressed and examples of mitigation strategies are given. The role of public policy and institutions in promoting climate change adaptation and mitigation is also explored. Finally, the third paper addresses the impacts of climate change on aquaculture. It provides an overview of the current food fish and aquaculture production and a synthesis of existing studies on climate change effects on aquaculture and fisheries. The paper focuses on the direct and indirect impacts of climate change on aquaculture, in terms of biodiversity, fish disease and fishmeal. Contribution of aquaculture to climate change is addressed (carbon emission and carbon sequestration), as well as possible adaptation and mitigation measures that could be implemented.

Fish Population Dynamics, Monitoring, and Management
Fish Population Dynamics, Monitoring, and Management

Author: Ichiro Aoki

Publisher: Springer

Published: 2018-05-22

Total Pages: 248

ISBN-13: 443156621X

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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.

Advances in Seafood Byproducts 2002 Conference Proceedings
Advances in Seafood Byproducts 2002 Conference Proceedings

Author: Peter J. Bechtel

Publisher:

Published: 2003

Total Pages: 576

ISBN-13:

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The seafood byproducts industry will find this book a valuable reference for years to come. The information presented at the 2nd International Seafood Byproduct Conference (Anchorage, Alaska, 2002) promises to play an important role in fish byproduct utilization and fish waste disposal issues, critical to the survivability and sustainability of fishing industries. Topics addressed in 45 contributions, representing 18 countries, include ¥Increased human consumption of fish oils and food supplements derived from seafoods, due to advances in medical sciences.¥New secondary products for human, animal, and industrial uses from seafood processing byproducts.¥New methods that improve seafood byproduct safety and processing. ¥Technological advances that have changed processing methods and increased the percentage of fish biomass used as human food.