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Climate Change And Small Pelagic Fish

Author: Dave Checkley
Publisher: Cambridge University Press
ISBN: 9781107434202
Size: 20.24 MB
Format: PDF
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This book details the effects of climate variability on small pelagic fish and their ecosystems and fisheries. Particularly abundant in coastal upwelling regions off the west coasts of the Americas and Africa, off Japan, and in the NE Atlantic, the stocks of these fish fluctuate greatly over the timescale of decades, with large ecological and economic effects. This book describes the nature and cause of these fluctuations, and their consequences. It outlines results from paleo-oceanographic studies, showing that similar fluctuations have also occurred over the past two millennia. The potential effects of future climate change, both natural and anthropogenic, on stocks and fisheries, are considered. The book concludes by recommending the continued international study and assessment of small pelagic fish in order to best inform management and policy under a changing climate. It is written for research scientists, academics, and policy makers in fisheries, oceanography, and climate change.

Climate Change And The Economics Of The World S Fisheries

Author: Rögnvaldur Hannesson
Publisher: Edward Elgar Publishing
ISBN: 1845428846
Size: 72.45 MB
Format: PDF, ePub, Docs
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To date, research on the economic implications of climate change on fisheries has been both limited and fragmented. The contributors to this volume remedy the lack of attention by investigating the economic consequences of pelagic fish fluctuations in the recent past in order to understand how to adapt and respond to future climate changes.

Climate Change Impacts On Fisheries And Aquaculture

Author: Bruce F. Phillips
Publisher: John Wiley & Sons
ISBN: 1119154073
Size: 38.46 MB
Format: PDF
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The first comprehensive review of the current and future effects of climate change on the world’s fisheries and aquaculture operations The first book of its kind, Climate Change Impacts on Fisheries and Aquaculture explores the impacts of climate change on global fisheries resources and on marine aquaculture. It also offers expert suggestions on possible adaptations to reduce those impacts. The world's climate is changing more rapidly than scientists had envisioned just a few years ago, and the potential impact of climate change on world food production is quite alarming. Nowhere is the sense of alarm more keenly felt than among those who study the warming of the world's oceans. Evidence of the dire effects of climate change on fisheries and fish farming has now mounted to such an extent that the need for a book such as this has become urgent. A landmark publication devoted exclusively to how climate change is affecting and is likely to affect commercially vital fisheries and aquaculture operations globally, Climate Change Impacts on Fisheries and Aquaculture provides scientists and fishery managers with a summary of and reference point for information on the subject which has been gathered thus far. Covers an array of critical topics and assesses reviews of climate change impacts on fisheries and aquaculture from many countries, including Japan, Mexico, South Africa, Australia, Chile, US, UK, New Zealand, Pacific Islands, India and others Features chapters on the effects of climate change on pelagic species, cod, lobsters, plankton, macroalgae, seagrasses and coral reefs Reviews the spread of diseases, economic and social impacts, marine aquaculture and adaptation in aquaculture under climate change Includes special reports on the Antarctic Ocean, the Caribbean Sea, the Arctic Ocean and the Mediterranean Sea Extensive references throughout the book make this volume both a comprehensive text for general study and a reference/guide to further research for fisheries scientists, fisheries managers, aquaculture personnel, climate change specialists, aquatic invertebrate and vertebrate biologists, physiologists, marine biologists, economists, environmentalist biologists and planners.

Climate Change Scenarios Experiments Predict A Future Reduction In Small Pelagic Fish Recruitment In The Humboldt Current System

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Size: 14.29 MB
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Abstract The Humboldt Current System (HCS) sustains the world′s largest small pelagic fishery. While a cooling of this system has been observed during recent decades, there is debate about the potential impacts of rising atmospheric CO2 concentrations on upwelling dynamics and productivity. Recent studies suggest that under increased atmospheric CO2 scenarios the oceanic stratification may strongly increase and upwelling‐favorable winds may remain nearly constant off Peru and increase off Chile. Here we investigate the impact of such climatic conditions on egg and larval dispersal phases, a key stage of small pelagic fish reproduction. We used larval retention rate in a predefined nursery area to provide a proxy for the recruitment level. Numerical experiments are based on hydrodynamics downscaled to the HCS from global simulations forced by pre‐industrial (PI), 2 נCO2 and 4 נCO2 scenarios. A biogeochemical model is applied to the PI and 4 נCO2 scenarios to define a time‐variable nursery area where larval survival is optimum. We test two distinct values of the oxycline depth that limits larval vertical distribution: One corresponding to the present‐day situation and the other corresponding to a shallower oxycline potentially produced by climate change. It appeared that larval retention over the continental shelf increases with enhanced stratification due to regional warming. However, this increase in retention is largely compensated for by a decrease of the nursery area and the shoaling of the oxycline. The underlying dynamics are explained by a combination of stratification effects and mesoscale activity changes. Our results therefore show that future climate change may significantly reduce fish capacity in the HCS with strong ecological, economic and social consequences.

The Economics Of Adapting Fisheries To Climate Change

Author: OECD
Publisher: OECD Publishing
ISBN: 926409041X
Size: 24.38 MB
Format: PDF, ePub, Docs
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This book highlights the economic and policy aspects of adapting fisheries to climate change, including strengthening global governance; a broader use of rights-based management; ecosystem protection; the ending of environmental harmful subsidies and use of aquaculture.

Recent Advances And Issues In Oceanography

Author: C. Reid Nichols
Publisher: Greenwood Publishing Group
ISBN: 9781573564069
Size: 78.44 MB
Format: PDF, Kindle
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This volume describes and evaluates the major current research developments in the ocean sciences. Topics include advances in measuring ocean phenomena from space, DEGREESIin situ DEGREESR instruments, and the development of fully integrated observing systems that allow investigators to take environmental snapshots of areas that must be monitored in order to protect property and save lives. The authors emphasize that today's successful oceanographic programs rely on multidisciplinary, integrated, and task-organized teams of varying professionals, marine technicians, and oceanographers. Also discussed are the World Wide Web, distributed databases, and computer models that allow research and operational oceanographers to share information to build useful products and make new discoveries.