Download or read book Assessment of the River Otter Population in Prince William Sound written by Howard N. Golden and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We present the results of river otter (Lontra canadensis) latrine site surveys and population density estimates conducted in western Prince William Sound during 2009– 2011. We discuss the results of the field survey conducted in 2009 and the DNA analysis and mark-recapture estimations conducted in 2010. We also present results of the recently completed field survey conducted in June 2011, which expanded the investigation to include harvested portions of western PWS. The 2011 work is essential to the testing and development of the mark-recapture methods as well as to providing a better understanding of the potential effects of harvest and refugia on the sustainable yield of river otter populations."--Page 1

Download or read book Assessment of Injury to River Otters in Prince William Sound Alaska Following the Exxon Valdez Oil Spill Terrestrial Mammal Study Number 3 Final Report written by Faro, James B and published by Soldotna, Alaska : Alaska Department of Fish and Game, Wildlife Conservation Division. This book was released on 1994 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of the Effects of the Exxon Valdez Oil Spill on River Otters in Prince William Sound written by James B. Faro and published by . This book was released on 1990 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of the Effect of the Exxon Valdez Oil Spill on River Otters in Prince William Sound written by James B. Faro and published by . This book was released on 1991 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recolonization Or Local Reproduction written by Kaithryn E. Ott and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal river otters (Lontra canadensis) were one of the first resources to recover from the 1989 Exxon Valdez oil spill (EVOS) in Prince William Sound (PWS). Nonetheless, genetic evidence suggests that the numerical recovery of otters in previously-oiled sites was a result of recolonization from adjacent areas rather than local reproduction. Because increased trapping-pressure on otters in recent years occurs mainly in un-oiled areas of PWS, previously-oiled sites may represent important source locations for these animals. We determined whether reproduction has recovered in otter populations inhabiting previously-oiled areas of PWS and Kenai Fjords National Park, using genetic tools and non-invasive fecal sampling. We obtained full genetic profiles for 594 fecal samples at eight hypervariable microsatellite loci. These samples represent 319 unique individuals from seven genetically distinct populations. Current values of F15 and relatedness are similar between oiled and un-oiled areas as opposed to values described for otters in the same areas in 1996-1998. In those years, otters in un-oiled areas had significantly higher values of F15 and relatedness when compared to otters in oiled areas. Our results suggest that river otters in previously-oiled areas of coastal Alaska have likely recovered their reproductive capacity. Therefore, river otters in previously-oiled areas may serve as source populations to support sustainable harvest of river otters in un-oiled areas.

Download or read book Assess Effects of the Exxon Valdez Oil Spill on River Otter in Prince William Sound written by James B. Faro and published by . This book was released on 1992 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assess Effects of the Exxon Valdez Oil Spill on River Otter and Mink in Prince William Sound written by James B. Faro and published by . This book was released on 1990 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book State Federal Natural Resource Damage Assessment Plan for the Exxon Valdez Oil Spill written by and published by . This book was released on 1989 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of the Magnitude Extent and Duration of Oil Spill Impacts on Sea Otter Populations in Alaska written by Charles Warren Monnett and published by . This book was released on 1990 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of the Exxon Valdez Oil Spill on River Otters written by R. Terry Bowyer and published by . This book was released on 2003 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Integration of individual-based and population-based studies is essential to understanding effects of pollution on populations and ecosystems. Here we provide an example of such integration from our exploration of effects on the Exxon Valdez oil spill (EVOS) on river otters (Lontra canadensis) inhabiting the terrestrial-marine interface in Prince William Sound, Alaska, USA. Our research was divided into 2 phases: an early phase (1989-92) immediately following the oil spill; and a late phase (1996-99), which focused on potential chronic effects of oil contamination in the Sound. We used a variety of measurements that considered the physiological status and health of individual river otters, as well as aspects of their ecology, behavior, and demography. We then conducted meta-analysis to explore interactions between individual-based and population-level data in demonstrating injury and subsequent recovery of otters from ill effects of EVOS. During both phases of our studies, we first conducted intensive research at 2 study sites, which we believed to be oil and non-oiled, and then expanded our investigations throughout similar areas of Prince William Sound. Nonetheless, our data are best interpreted as differences between heavily oiled areas and lightly oiled sites because later information indicated that our reference sites were lightly oiled. Thus we refer to heavily oiled sites as oiled and lightly oil sites as 'nonoiled'"--Page 1

Download or read book Investigation of the Exxon Valdez Oil Spill Prince William Sound Alaska Oil spill cleanup operation and damage assessment written by United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Water, Power, and Offshore Energy Resources and published by . This book was released on 1989 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology of Sea Otters in Prince William Sound Alaska written by David Lance Garshelis and published by . This book was released on 1983 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1991 State federal Natural Resource Damage Assessment and Restoration Plan for the Exxon Valdez Oil Spill Assessment and Restoration Plan B1v 1 Response to Public Comment written by and published by . This book was released on 1991 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Community Ecology of Sea Otters written by Glenn R. VanBlaricom and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impetus for this volume comes from two sources. The first is scientific: by virtue of a preference for certain large benthic invertebrates as food, sea otters have interesting and significant effects on the structure and dynamics of nearshore communities in the North Pacific. The second is political: be cause of the precarious status of the sea otter population in coastal California, the U.S. Fish and Wildlife Service (USFWS) announced, in June 1984, a proposal to establish a new population of sea otters at San Nicolas Island, off southern California. The proposal is based on the premise that risks of catastrophic losses of sea otters, due to large oil spills, are greatly reduced by distributing the population among two geographically separate locations. The federal laws of the U.S. require that USFWS publish an Environmental Impact Statement (ElS) regarding the proposed translocation of sea otters to San Nicolas Island. The EIS is intended to be an assessment of likely bio logical, social, and economic effects of the proposal. In final form, the EIS has an important role in the decision of federal management authority (in this case, the Secretary of the Interior of the U.S.) to accept or reject the proposal.

Download or read book The Effect of Coastal River Otters Lontra Canadensis on the Plant Community of Prince William Sound AK written by Aaron Michael Roe and published by ProQuest. This book was released on 2008 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Status of California Sea Otters written by Donald Blair Siniff and published by . This book was released on 1988 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Long term Ecological Change in the Northern Gulf of Alaska written by R.B. Spies and published by Elsevier. This book was released on 2006-12-12 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive text is a major synthesis on ecological change in the Gulf of Alaska. It encompasses the structural and annual changes, forces of change, long-ecological changes in the atmosphere and ocean, plankton, fish, birds and mammals, and the effects of the 1989 Exxon Valdez Oil Spill. With 5 major sections, Long-term Ecological Change in the Northern Gulf of Alaska first describes the physical features, the atmosphere and physical oceanography, the annual production cycle, the forage base for higher animals and trophic transfer, and the adaptations for survival in this changing environment for 9 portal species. Then, the major forces of change are introduced: climate, geophysics, fisheries and harvesting, species interactions, disease and contaminants. Next, the long-term records of change in physical factors and biological populations are presented, as well as the potential reasons for the biological changes. Following is the history of the Exxon Valdez oil spill and its long-term effects. And, finally, the emergent properties of the ecosystem are discussed and an attempt is made to weigh the importance of the major forcing factors in terms of their temporal and spatial scales of influence.* Examines important data on long-term change in the ecosystem and the forcing factors that are responsible for it * Provides an account of the 1989 Exxon Valdez oil spill with emphasis on the long-term effects * Describes the effects of climate change, geophysical change, species interactions, harvesting, disease, the 1989 oil spill, and marine contaminants on key populations of marine organisms