Author: Boyd PorterPublisher:
ISBN:
Category : Steller's sea lion
Languages : en
Pages : 106
Book Description
Winter Ecology of Steller Sea Lions (Eumetopias Jubatus) in Alaska
Author: Boyd PorterPublisher:
ISBN:
Category : Steller's sea lion
Languages : en
Pages : 106
Book Description
Ethology and Behavioral Ecology of Otariids and the Odobenid
Author: Claudio CampagnaPublisher: Springer Nature
ISBN: 3030591840
Category : Nature
Languages : en
Pages : 667
Book Description
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.
Steller Sea Lion and Northern Fur Seal Research
Author: Steller Sea Lion Protection Measures
Author: 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
Author: United States. National Marine Fisheries Service. Office of Protected Resources. Permits DivisionPublisher:
ISBN:
Category : Northern fur seal
Languages : en
Pages : 1128
Book Description
Tongass National Forest (N.F.), Kensington Gold Project
Author: Regulatory Impact/initial Flexibility Analysis of Proposed Inshore/offshore Allocation Alternatives, Amendment 18/23 to Groundfish, Bering Sea and Aleutian Islands Fisheries Management Plan (FMP) and Gulf of Alaska Groundfish Fisheries Management Plan (FMP)
Author: Decline of the Steller Sea Lion in Alaskan Waters
Author: National Research CouncilPublisher: National Academies Press
ISBN: 0309168724
Category : Science
Languages : en
Pages : 216
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.
Steller Sea Lions (Eumetopias Jubatus)
Author: Andrew W. TritesPublisher:
ISBN:
Category : Steller's sea lion
Languages : en
Pages : 52
Book Description
Presents the changes in the Steller sea lion's diet over time (from a diverse diet including fatty fishes to one dominated by pollock), which has resulted in negative reproductive and survival consequences
Author: