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A Review Of Proposed Fishery Management Actions And The Decline Of Steller Sea Lions Eumetopias Jubatus In Alaska
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Book Synopsis A Review of Proposed Fishery Management Actions and the Decline of Steller Sea Lions Eumetopias Jubatus in Alaska by : Morgen Crow
Download or read book A Review of Proposed Fishery Management Actions and the Decline of Steller Sea Lions Eumetopias Jubatus in Alaska written by Morgen Crow and published by . This book was released on 2001 with total page 124 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 2003-05-04 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 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.
Download or read book Marine Fisheries Review written by and published by . This book was released on 1995 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Final recovery plan for the steller sea lion (Eumetopias jubatus) by :
Download or read book Final recovery plan for the steller sea lion (Eumetopias jubatus) written by and published by . This book was released on 1994 with total page 112 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 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Programmatic Supplemental EIS for Alaska Groundfish Fisheries Implemented Under the Authority of the Fishery Management Plans for the Groundfish Fishery of the Gulf of Alaska and the Groundfish of the Bering Sea and Aleutian Islands Area by :
Download or read book Programmatic Supplemental EIS for Alaska Groundfish Fisheries Implemented Under the Authority of the Fishery Management Plans for the Groundfish Fishery of the Gulf of Alaska and the Groundfish of the Bering Sea and Aleutian Islands Area written by and published by . This book was released on 2004 with total page 810 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 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 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Steller Sea Lion (Eumetopias Jubatus) Decline and the Gulf of Alaska/Bering Sea Commercial Fishery by : Daniel Reneau Hennen
Download or read book The Steller Sea Lion (Eumetopias Jubatus) Decline and the Gulf of Alaska/Bering Sea Commercial Fishery written by Daniel Reneau Hennen and published by . This book was released on 2004 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Steller sea lion (SSL) population in Alaska was listed as threatened under the Endangered Species Act in 1991. Several procedural restrictions were placed on the commercial fisheries of the region at that time in an effort to reduce the potential for human induced mortality on sea lions. Several years have elapsed since these restrictions were put into place and questions about their efficacy abound. In an effort to determine whether or not fisheries interventions have helped the SSL population to recover, estimates of the fishing activity of the Bering Sea/Gulf of Alaska commercial fisheries in the vicinity of individual Steller sea lion rookeries and SSL population trends at those rookeries were made using data from the National Marine Fisheries Service (NMFS) Fisheries Observer Program and Steller Sea Lion Adult Count Database. Fisheries data from 1976-2000 were analyzed in relation to SSL population counts from 1956-2001, at 32 rookeries from the endangered western stock. Linear regression on the principal components of the fisheries data show that a positive correlation exists between several metrics of historical fishing activity and SSL population decline. The relationship is less consistent after 1991, supporting a hypothesis that fishing closures around some of the rookeries have been effective in moderating the localized effects of fishing activity on SSL.
Book Synopsis Renewal of the Federal Grant for the Trans-Alaska Pipeline System Right-of-way by :
Download or read book Renewal of the Federal Grant for the Trans-Alaska Pipeline System Right-of-way written by and published by . This book was released on 2002 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Draft Environmental Impact Statement by : United States. Bureau of Land Management. Alaska State Office
Download or read book Draft Environmental Impact Statement written by United States. Bureau of Land Management. Alaska State Office and published by . This book was released on 2002 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Resources. Subcommittee on Fisheries Conservation, Wildlife, and Oceans Publisher : ISBN 13 : Total Pages :132 pages Book Rating :4.F/5 ( download)
Book Synopsis Oversight Hearing on Steller Sea Lions by : United States. Congress. House. Committee on Resources. Subcommittee on Fisheries Conservation, Wildlife, and Oceans
Download or read book Oversight Hearing on Steller Sea Lions written by United States. Congress. House. Committee on Resources. Subcommittee on Fisheries Conservation, Wildlife, and Oceans and published by . This book was released on 2001 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Potential Interactions Between State-managed Fisheries and Steller Sea Lions (Eumetopias Jubatus) by : Nathan James Soboleff
Download or read book Potential Interactions Between State-managed Fisheries and Steller Sea Lions (Eumetopias Jubatus) written by Nathan James Soboleff and published by . This book was released on 2006 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Are spatial and temporal patterns of Steller sea lion declines consistent with development of certain state-managed commercial fisheries and vessel activity? This question motivated our analysis of data from the National Marine Fisheries Service count database and the Alaska Department of Fish and Game's (ADF & G) Fish Ticket database on state managed commercial fisheries from 1976 to 2002. Rookery groupings for Steller sea lions were formed based on spatial patterns of covariation of similar population declines. Using query reports from ADF & G, commercial fisheries statistical areas were selected within 50-nm radii of rookery groupings and analyzed for potential fisheries interactions. Negative correlations between state-managed fisheries for groundfish and salmon fisheries were found but few were statistically significant. Low statistical power constrained some of these tests. Many state-managed fisheries for shellfish (shrimp, king, and Tanner crab) were positively correlated with Steller sea lion declines, but again few were statistically significant. Rather than suggesting that somehow sea lions benefit from these fisheries, positive correlations are more likely to be indicative of covariation of sea lions and fisheries with common environmental factors. Field research into groundfish and salmon fisheries interactions, perhaps coupled with experimental management, is necessary to confirm causes of Steller sea lion declines"--Leaf iii.
Book Synopsis Glacier Bay National Park (N.P.), Harvest of Glaucous-winged Gull Eggs by Huna Tlingit by :
Download or read book Glacier Bay National Park (N.P.), Harvest of Glaucous-winged Gull Eggs by Huna Tlingit written by and published by . This book was released on 2010 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Glacier Bay National Park (N.P.) and Preserve, Vessel Quotas and Operating Requirements by :
Download or read book Glacier Bay National Park (N.P.) and Preserve, Vessel Quotas and Operating Requirements written by and published by . This book was released on 2003 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Relationship of the Foraging Ecology of Steller Sea Lions (Eumetopias Jubatus) to Their Population Decline in Alaska by : Richard Merrick
Download or read book The Relationship of the Foraging Ecology of Steller Sea Lions (Eumetopias Jubatus) to Their Population Decline in Alaska written by Richard Merrick and published by . This book was released on 1995 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
