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Observations On The Status Of The Northern Sea Lion Population In Alaska
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Book Synopsis Decline of the Steller Sea Lion in Alaskan Waters by : National Research Council
Download or read book Decline of the Steller Sea Lion in Alaskan Waters written by National Research Council and published by National Academies Press. This book was released on 2003-05-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Observations on the Status of the Northern Sea Lion Population in Alaska by : Richard Leslie Merrick
Download or read book Observations on the Status of the Northern Sea Lion Population in Alaska written by Richard Leslie Merrick and published by . This book was released on 1984 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Decline of the Steller Sea Lion in Alaskan Waters by : National Research Council
Download or read book Decline of the Steller Sea Lion in Alaskan Waters written by National Research Council and published by National Academies Press. This book was released on 2003-04-04 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Recovery Plan for the Steller Sea Lion (Eumetopias Jubatus) by :
Download or read book Recovery Plan for the Steller Sea Lion (Eumetopias Jubatus) written by and published by . This book was released on 1992 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Observed Catches of Groundfish and Selected Bycatch Species Within Critical Habitat of the Steller Sea Lion in the Bering Sea, Aleutian Islands, and Gulf of Alaska from 1977-92 by :
Download or read book Observed Catches of Groundfish and Selected Bycatch Species Within Critical Habitat of the Steller Sea Lion in the Bering Sea, Aleutian Islands, and Gulf of Alaska from 1977-92 written by and published by . This book was released on 1993 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishery Bulletin written by and published by . This book was released on 1971 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photographic Census of the Steller Sea Lion Herds in Alaska, 1956-58 by : Ole Alfred Mathisen
Download or read book Photographic Census of the Steller Sea Lion Herds in Alaska, 1956-58 written by Ole Alfred Mathisen and published by . This book was released on 1963 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. National Marine Fisheries Service. Office of Protected Resources. Permits Division Publisher : ISBN 13 : Total Pages :1124 pages Book Rating :4.3/5 (91 download)
Book Synopsis Steller Sea Lion and Northern Fur Seal Research: Purpose and need; Alternatives; Affected environment; Environmental consequences; National Environmental Policy Act compliance implementation and recommendations; List of preparers; List of agencies, organizations, and persons whom the draft EIS was sent; References; Index by : United States. National Marine Fisheries Service. Office of Protected Resources. Permits Division
Download or read book Steller Sea Lion and Northern Fur Seal Research: Purpose and need; Alternatives; Affected environment; Environmental consequences; National Environmental Policy Act compliance implementation and recommendations; List of preparers; List of agencies, organizations, and persons whom the draft EIS was sent; References; Index written by United States. National Marine Fisheries Service. Office of Protected Resources. Permits Division and published by . This book was released on 2007 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Harvest of the Steller Sea Lion in Alaskan Waters by : Fredrik V. Thorsteinson
Download or read book Experimental Harvest of the Steller Sea Lion in Alaskan Waters written by Fredrik V. Thorsteinson and published by . This book was released on 1961 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report of the Workshop on the Status of Northern Sea Lions in Alaska by : Thomas R. Loughlin
Download or read book Report of the Workshop on the Status of Northern Sea Lions in Alaska written by Thomas R. Loughlin and published by . This book was released on 1987 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Michael A. Bigg Publisher :Fisheries and Oceans, Scientific Information and Publications Branch ISBN 13 : Total Pages :32 pages Book Rating :4.:/5 (318 download)
Book Synopsis Status of the Steller Sea Lion (Eumetopias Jubatus) and California Sea Lion (Zalophus Californianus) in British Columbia by : Michael A. Bigg
Download or read book Status of the Steller Sea Lion (Eumetopias Jubatus) and California Sea Lion (Zalophus Californianus) in British Columbia written by Michael A. Bigg and published by Fisheries and Oceans, Scientific Information and Publications Branch. This book was released on 1985 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerial censuses were undertaken for Steller sea lions (Eumetopias jubatus) and California sea lions (Zalophus californianus) during 1971-84, and a review was made of published and unpublished data on numbers seen and numbers killed since 1913. These data were used to describe the location of haulout sites, season of occupation at haulout sites, regional movement patterns, and trends in numbers seen for each species during this century.
Download or read book NOAA Technical Report NMFS. written by and published by . This book was released on 1984 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recovery Plan for the Steller Sea Lion (Eumetopias Jubatus) by :
Download or read book Recovery Plan for the Steller Sea Lion (Eumetopias Jubatus) written by and published by . This book was released on 1994 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ethology and Behavioral Ecology of Otariids and the Odobenid by : Claudio Campagna
Download or read book Ethology and Behavioral Ecology of Otariids and the Odobenid written by Claudio Campagna and published by Springer. This book was released on 2022-06-05 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is focused on the marine mammalian groups the Otariidae and the Odobenidae, otherwise known as fur seals, sea lions and the walrus. In 30 chapters, more than 60 authors from 30 institutions and 13 nationalities, discuss a broad suite of topics from maternal care and mating behavior, through play, cognition and personality, to adaptation to life in the Anthropocene. The authors explore the behaviors that have allowed these semi-aquatic mammals to thrive in the marine realm. Many populations have recovered following historical decimation, with interesting evolutionary consequences which are explored. Detailed, selected, individual species descriptions are also provided, showcasing the behavioral diversity of this engaging, adaptive and highly successful group of marine mammals.
Book Synopsis Field Studies of Steller Sea Lions (Eumetopias Jubatus) at Marmot Island, Alaska 1979 Through 1994 by :
Download or read book Field Studies of Steller Sea Lions (Eumetopias Jubatus) at Marmot Island, Alaska 1979 Through 1994 written by and published by . This book was released on 1997 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Steller Sea Lion Protection Measures by :
Download or read book Steller Sea Lion Protection Measures written by and published by . This book was released on 2001 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Damaged and Threatened National Natural Landmarks by :
Download or read book Damaged and Threatened National Natural Landmarks written by and published by . This book was released on with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
