Decline of the Steller Sea Lion in Alaskan Waters PDF Download
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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309086329
Category : Science
Languages : en
Pages : 217
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Book Description
For an unknown reason, the Steller sea lion population in Alaska has declined by 80% over the past three decades. In 2001, the National Research Council began a study to assess the many hypotheses proposed to explain the sea lion decline including insufficient food due to fishing or the late 1970s climate/regime shift, a disease epidemic, pollution, illegal shooting, subsistence harvest, and predation by killer whales or sharks. The report's analysis indicates that the population decline cannot be explained only by a decreased availability of food; hence other factors, such as predation and illegal shooting, deserve further study. The report recommends a management strategy that could help determine the impact of fisheries on sea lion survival-establishing open and closed fishing areas around sea lion rookeries. This strategy would allow researchers to study sea lions in relatively controlled, contrasting environments. Experimental area closures will help fill some short-term data gaps, but long-term monitoring will be required to understand why sea lions are at a fraction of their former abundance.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309086329
Category : Science
Languages : en
Pages : 217
Get Book Here
Book Description
For an unknown reason, the Steller sea lion population in Alaska has declined by 80% over the past three decades. In 2001, the National Research Council began a study to assess the many hypotheses proposed to explain the sea lion decline including insufficient food due to fishing or the late 1970s climate/regime shift, a disease epidemic, pollution, illegal shooting, subsistence harvest, and predation by killer whales or sharks. The report's analysis indicates that the population decline cannot be explained only by a decreased availability of food; hence other factors, such as predation and illegal shooting, deserve further study. The report recommends a management strategy that could help determine the impact of fisheries on sea lion survival-establishing open and closed fishing areas around sea lion rookeries. This strategy would allow researchers to study sea lions in relatively controlled, contrasting environments. Experimental area closures will help fill some short-term data gaps, but long-term monitoring will be required to understand why sea lions are at a fraction of their former abundance.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309168724
Category : Science
Languages : en
Pages : 216
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Book Description
For an unknown reason, the Steller sea lion population in Alaska has declined by 80% over the past three decades. In 2001, the National Research Council began a study to assess the many hypotheses proposed to explain the sea lion decline including insufficient food due to fishing or the late 1970s climate/regime shift, a disease epidemic, pollution, illegal shooting, subsistence harvest, and predation by killer whales or sharks. The report's analysis indicates that the population decline cannot be explained only by a decreased availability of food; hence other factors, such as predation and illegal shooting, deserve further study. The report recommends a management strategy that could help determine the impact of fisheries on sea lion survival-establishing open and closed fishing areas around sea lion rookeries. This strategy would allow researchers to study sea lions in relatively controlled, contrasting environments. Experimental area closures will help fill some short-term data gaps, but long-term monitoring will be required to understand why sea lions are at a fraction of their former abundance.
Author: United States. Congress. House. Committee on Resources. Subcommittee on Fisheries Conservation, Wildlife, and Oceans
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 132
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Book Description
Author:
Publisher:
ISBN:
Category : Arctic regions
Languages : en
Pages : 210
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 294
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Book Description
Author: Jeanne Walker Harvey
Publisher: Arbordale Publishing
ISBN: 1607180766
Category : Juvenile Nonfiction
Languages : en
Pages : 19
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Book Description
After Astro, an orphaned Steller sea lion, was rescued by scientists at The Marine Mammal Center in Sausalito, California, his attachment to people made him unable to be returned to the ocean and he now lives at the Mystic Aquarium in Connecticut.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 438
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Book Description
Author: Josh Eagle
Publisher: Aspen Publishing
ISBN:
Category : Law
Languages : en
Pages : 832
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Book Description
Ocean and Coastal Resources Law is a topical and up-to-date resource for those interested in marine law and policy and the land uses near marine areas, and how they interact. Ocean and Coastal Resources Law, 4e, provides an interdisciplinary approach that combines cases and materials with key sources from science, economics, and business. Ocean and Coastal Resources Law prepares students for practice as lawyers in a variety of fields, such as conservation and marine protection, oil and gas and renewable energy development, coastal land use, real estate, development, and work in nongovernmental organizations and federal and state regulatory agencies. The Fourth Edition adds updated materials related to the rapidly developing law of climate adaptation, e.g., fisheries regulation as fish populations relocate, and the regulation of coastal structure protection as sea levels rise. New to the Fourth Edition: Coverage of domestic and international ocean law, protected marine species, and off-shore industrial development Updated materials on renewable energy and aquaculture In-depth treatment of the Deepwater Horizon disaster. A holistic view of how activities on the seas affect coastal land activities, and vice versa Updates throughout Coastal Law chapters through 2023 New points for discussion Refreshed problem exercises Professors and students will benefit from: Coverage of domestic and international ocean law—richly illustrated and accessibly written The back-to-back organization of Ocean Law and Coastal Law chapters may be easily adapted to syllabi on Ocean Law, Coastal Law, or Ocean and Coastal Law courses Interdisciplinary materials from law, science, economics, and business inform and add perspective to a range of subjects—such as conservation, land use, and industry regulation—preparing students for careers as lawyers in a variety of fields Points for discussion highlight connections between cases and topics and raise questions that encourage students to articulate a response to issues of law and policy
Author: William F. Perrin
Publisher: Academic Press
ISBN: 0080919936
Category : Science
Languages : en
Pages : 1355
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Book Description
This thorough revision of the classic Encyclopedia of Marine Mammals brings this authoritative book right up-to-date. Articles describe every species in detail, based on the very latest taxonomy, and a host of biological, ecological and sociological aspects relating to marine mammals. The latest information on the biology, ecology, anatomy, behavior and interactions with man is provided by a cast of expert authors – all presented in such detail and clarity to support both marine mammal specialists and the serious naturalist. Fully referenced throughout and with a fresh selection of the best color photographs available, the long-awaited second edition remains at the forefront as the go-to reference on marine mammals. - More than 20% NEW MATERIAL includes articles on Climate Change, Pacific White-sided Dolphins, Sociobiology, Habitat Use, Feeding Morphology and more - Over 260 articles on the individual species with topics ranging from anatomy and behavior, to conservation, exploitation and the impact of global climate change on marine mammals - New color illustrations show every species and document topical articles FROM THE FIRST EDITION "This book is so good...a bargain, full of riches...packed with fascinating up to date information. I recommend it unreservedly it to individuals, students, and researchers, as well as libraries." --Richard M. Laws, MARINE MAMMALS SCIENCE "...establishes a solid and satisfying foundation for current study and future exploration" --Ronald J. Shusterman, SCIENCE
Author: United States. Congress. Senate. Committee on Armed Services
Publisher:
ISBN:
Category : Biography & Autobiography
Languages : en
Pages : 268
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Book Description
