Bureau of Commercial Fisheries, Fishery-Oceanography Center, La Jolla, California, Fiscal Year 1968 (Classic Reprint)

Bureau of Commercial Fisheries, Fishery-Oceanography Center, La Jolla, California, Fiscal Year 1968 (Classic Reprint) PDF

Author: United States. Bureau of Commercial Fisheries

Publisher: Forgotten Books

Published: 2018-01-29

Total Pages: 44

ISBN-13: 9780267103294

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Excerpt from Bureau of Commercial Fisheries, Fishery-Oceanography Center, La Jolla, California, Fiscal Year 1968 The 1966 statistics represented the culmination of along trend of declining landings, which by this time had fallen to less than a third of their 1939 figure, and were offset, for tuna, by an increased dependence on the catches of foreign fishing vessels. In 1939, the total catch of the California fleet was more than three quarters of a million metric tons, valued at $18 million, supplemented by only about tons purchased from foreign fishing fleets. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Marine Fish Larvae

Marine Fish Larvae PDF

Author: Reuben Lasker

Publisher: University of Washington Press

Published: 1981

Total Pages: 152

ISBN-13:

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THE LARVAL LIFE AND HISTORY OF MARINE FISHES.

Real-time Coastal Observing Systems for Marine Ecosystem Dynamics and Harmful Algal Blooms

Real-time Coastal Observing Systems for Marine Ecosystem Dynamics and Harmful Algal Blooms PDF

Author: Babin, Marcel

Publisher: UNESCO

Published: 2008-06-05

Total Pages: 880

ISBN-13: 9231040421

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The proliferation of harmful phytoplankton in marine ecosystems can cause massive fish kills, contaminate seafood with toxins, impact local and regional economies and dramatically affect ecological balance. Real-time observations are essential for effective short-term operational forecasting, but observation and modelling systems are still being developed. This volume provides guidance for developing real-time and near real-time sensing systems for observing and predicting plankton dynamics, including harmful algal blooms, in coastal waters. The underlying theory is explained and current trends in research and monitoring are discussed.Topics covered include: coastal ecosystems and dynamics of harmful algal blooms; theory and practical applications of in situ and remotely sensed optical detection of microalgal distributions and composition; theory and practical applications of in situ biological and chemical sensors for targeted species and toxin detection; integrated observing systems and platforms for detection; diagnostic and predictive modelling of ecosystems and harmful algal blooms, including data assimilation techniques; observational needs for the public and government; and future directions for research and operations.

Review of the State of World Marine Fishery Resources

Review of the State of World Marine Fishery Resources PDF

Author: Food and Agriculture Organization of the United Nations. Marine Resources Service

Publisher: Food & Agriculture Org.

Published: 1994

Total Pages: 148

ISBN-13: 9789251034712

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This document provides a review, commentary and tabulations of the main trends that have occurred in exploitation of fisheries resources since the 1970s, largely as they are reflected in the FAO database on fishery landings, supplemented with selected information from the fishery literature. Reviews were prepared separately for the 15 main areas into which FAO divides the world's oceans for statistical purposes. They are then compared from a global perspective to reveal relative trends by species and areas, which are highlighted. Several special topics are reviewed, including tuna and tuna-like species, whales and dolphins, and environmental issues in fisheries.

Shifting Baselines

Shifting Baselines PDF

Author: Jeremy B.C. Jackson

Publisher: Island Press

Published: 2012-06-22

Total Pages: 309

ISBN-13: 161091029X

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Shifting Baselines explores the real-world implications of a groundbreaking idea: we must understand the oceans of the past to protect the oceans of the future. In 1995, acclaimed marine biologist Daniel Pauly coined the term "shifting baselines" to describe a phenomenon of lowered expectations, in which each generation regards a progressively poorer natural world as normal. This seminal volume expands on Pauly's work, showing how skewed visions of the past have led to disastrous marine policies and why historical perspective is critical to revitalize fisheries and ecosystems. Edited by marine ecologists Jeremy Jackson and Enric Sala, and historian Karen Alexander, the book brings together knowledge from disparate disciplines to paint a more realistic picture of past fisheries. The authors use case studies on the cod fishery and the connection between sardine and anchovy populations, among others, to explain various methods for studying historic trends and the intricate relationships between species. Subsequent chapters offer recommendations about both specific research methods and effective management. This practical information is framed by inspiring essays by Carl Safina and Randy Olson on a personal experience of shifting baselines and the importance of human stories in describing this phenomenon to a broad public. While each contributor brings a different expertise to bear, all agree on the importance of historical perspective for effective fisheries management. Readers, from students to professionals, will benefit enormously from this informed hindsight.

Responding to Oil Spills in the U.S. Arctic Marine Environment

Responding to Oil Spills in the U.S. Arctic Marine Environment PDF

Author: National Research Council

Publisher: National Academies Press

Published: 2014-08-01

Total Pages: 343

ISBN-13: 030929889X

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U.S. Arctic waters north of the Bering Strait and west of the Canadian border encompass a vast area that is usually ice covered for much of the year, but is increasingly experiencing longer periods and larger areas of open water due to climate change. Sparsely inhabited with a wide variety of ecosystems found nowhere else, this region is vulnerable to damage from human activities. As oil and gas, shipping, and tourism activities increase, the possibilities of an oil spill also increase. How can we best prepare to respond to such an event in this challenging environment? Responding to Oil Spills in the U.S. Arctic Marine Environment reviews the current state of the science regarding oil spill response and environmental assessment in the Arctic region north of the Bering Strait, with emphasis on the potential impacts in U.S. waters. This report describes the unique ecosystems and environment of the Arctic and makes recommendations to provide an effective response effort in these challenging conditions. According to Responding to Oil Spills in the U.S. Arctic Marine Environment, a full range of proven oil spill response technologies is needed in order to minimize the impacts on people and sensitive ecosystems. This report identifies key oil spill research priorities, critical data and monitoring needs, mitigation strategies, and important operational and logistical issues. The Arctic acts as an integrating, regulating, and mediating component of the physical, atmospheric and cryospheric systems that govern life on Earth. Not only does the Arctic serve as regulator of many of the Earth's large-scale systems and processes, but it is also an area where choices made have substantial impact on life and choices everywhere on planet Earth. This report's recommendations will assist environmentalists, industry, state and local policymakers, and anyone interested in the future of this special region to preserve and protect it from damaging oil spills.

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