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Marine Bird Populations In Prince William Sound Alaska
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Book Synopsis Marine Bird Populations in Prince William Sound, Alaska by : Thomas J. Dwyer
Download or read book Marine Bird Populations in Prince William Sound, Alaska written by Thomas J. Dwyer and published by . This book was released on 1975* with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Marine bird populations in Prince William Sound, Alaska, were censused in the winter and summer of 1972 and 1973 to assess the potential impact of oil transport operations resulting from construction of the Trans-Alaska Pipeline. The principal groups of birds present in order of abundance in the winter were sea ducks, gulls, and alcids."--Cover.
Book Synopsis Declines in marine bird populations in Prince William Sound, Alaska coincident with a climatic regime shift by : B.A. AGLER
Download or read book Declines in marine bird populations in Prince William Sound, Alaska coincident with a climatic regime shift written by B.A. AGLER and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Marine Bird Populations of Prince William Sound, Alaska, Before and After the Exxon Valdez Oil Spill by : Steven Paul Klosiewski
Download or read book Marine Bird Populations of Prince William Sound, Alaska, Before and After the Exxon Valdez Oil Spill written by Steven Paul Klosiewski and published by . This book was released on 1994 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Continuing the Legacy: Prince William Sound and Gulf of Alaska Marine Bird Population Trends by : Robb Kaler
Download or read book Continuing the Legacy: Prince William Sound and Gulf of Alaska Marine Bird Population Trends written by Robb Kaler and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study area included all waters of the Prince William Sound and all land within 100 meters of the shore (with some exceptions). Some data cover the adjacent portion of the Gulf of Alaska.
Book Synopsis Prince William Sound Marine Bird Surveys, Synthesis and Restoration by : Aly McKnight
Download or read book Prince William Sound Marine Bird Surveys, Synthesis and Restoration written by Aly McKnight and published by . This book was released on 2008 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small boat surveys were conducted to estimate marine bird and sea otter populations in Prince William Sound, Alaska during March and July 2007, using methods developed in 1989-1991. Biologists examined trends of marine birds in the oiled and unoiled areas of the sound from 1989-2007. Data indicated that most taxa for which injury was previously demonstrated were not recovering. During winter three taxa had increasing population trends, while fourteen taxa did not exhibit any trend toward recovery. During summer three taxa showed trends consistent with a recovering population, and fifteen taxa showed no trend toward recovery. Densities of sea otters in March and July surveys showed no trend toward recovery. The study focused on seabirds, but also included other birds and various marine mammals.
Book Synopsis Marine Bird Populations in Prince William Sound by : Thomas J. Dwyer
Download or read book Marine Bird Populations in Prince William Sound written by Thomas J. Dwyer and published by . This book was released on 1974* with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The objectives of this report are to present data on the species composition and abundance of marine birds in Prince William Sound during winter and summer. These data were gathered by the U.S. Fish and Wildlife Service in an effort to assess the possible impact of oil transport operations on marine birds in Prince William Sound."--Leaf [1].
Book Synopsis Marine Bird and Sea Otter Populations of Prince William Sound, Alaska by :
Download or read book Marine Bird and Sea Otter Populations of Prince William Sound, Alaska written by and published by . This book was released on 1994 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nine Years After the Exxon Valdez Oil Spill by : David B. Irons
Download or read book Nine Years After the Exxon Valdez Oil Spill written by David B. Irons and published by . This book was released on 2000 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alaska Seabird Information Series (ASIS) by :
Download or read book Alaska Seabird Information Series (ASIS) written by and published by . This book was released on 2006 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Compilation of seabird species accounts for all seabirds breeding in Alaska and five important nonbreeders. Conservation status, life history, distribution, population size and trends, conservation concerns, and recommended management actions are included in the accounts"--Leaf i.
Book Synopsis Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska by : Beverly A. Agler
Download or read book Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska written by Beverly A. Agler and published by . This book was released on 1997 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska by :
Download or read book Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska written by and published by . This book was released on 1994 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska by : Beverly A. Agler
Download or read book Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska written by Beverly A. Agler and published by . This book was released on 1994 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska by :
Download or read book Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska written by and published by . This book was released on 2006 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska by : Brian K. Lance
Download or read book Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska written by Brian K. Lance and published by . This book was released on 1999 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska by : Steven J. Kendall
Download or read book Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska written by Steven J. Kendall and published by . This book was released on 2001 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska by : Beverly A. Agler
Download or read book Marine Bird and Sea Otter Population Abundance of Prince William Sound, Alaska written by Beverly A. Agler and published by . This book was released on 1997 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Patterns of Distribution, Abundance, and Change Over Time in the Marine Bird Community of Prince William Sound, Alaska, 1989-2012 by : Daniel Arel Cushing
Download or read book Patterns of Distribution, Abundance, and Change Over Time in the Marine Bird Community of Prince William Sound, Alaska, 1989-2012 written by Daniel Arel Cushing and published by . This book was released on 2014 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over recent decades, the marine ecosystems of Prince William Sound (PWS), Alaska have experienced the concurrent effects of a major anthropogenic disturbance, the 1989 Exxon Valdez oil spill (EVOS), and a dynamic atmospheric-oceanic environment. Studies of top marine consumers can provide insights into processes of ecosystem change. Using data collected during boat-based marine bird surveys in PWS over the period 1989-2012, I used complimentary taxon- and community-centric approaches to investigate patterns of distribution and abundance of marine birds across space and time. In doing so, I sought to provide insight into processes that may have affected both the birds themselves and the ecosystems of which they are a part. I found that the marine bird community as a whole was spatially structured along a primary onshore-offshore environmental gradient, and secondarily structured along an estuarine-marine environmental gradient. I found two patterns of community variability across time. The first temporal community-level pattern was likely related to sustained rates of change in the abundance of some genera, likely caused by demographic processes. This pattern was correlated with climate variability at time-scales of several years to a decade. The second temporal community-level pattern was characterized by fluctuations that correlated with climate variability at an annual time-scale, likely caused by movements of birds between PWS and the adjacent Gulf of Alaska. I also evaluated changes in the abundance of 18 genera of marine birds, and found that seven had declined in abundance and three had increased over the study period; all genera that declined were piscivorous or planktivorous. Furthermore, the rates of population change of genera were related to their position in the onshore-offshore gradient, with the highest rates of decline occurring in offshore-associated genera. I also investigated spatial habitat associations and temporal changes in abundance of a focal taxon, the seabird genus Brachyramphus. Two species within this piscivorous, pursuit-diving genus occur in PWS, the marbled murrelet (B. marmoratus) and the Kittlitz's murrelet (B. brevirostris). Both are species of conservation concern, and both experienced acute mortality in PWS caused by the EVOS. Using a statistical model that accounted for variables affecting observed abundance across space and time, I found that abundance decreased by more than two-thirds over the study period. I found no evidence that rates of change differed along environmental or geographic gradients. There was also no evidence that changes in seasonal patterns of abundance occurred. These results are indicative of a widespread decline in the abundance of Brachyramphus murrelets within PWS. Taken as a whole, the results of my thesis are consistent with the hypothesis that climate change has differentially affected nearshore and offshore components of PWS food webs. This in turn has likely contributed to the failure of some taxa, including Brachyramphus murrelets, to recover from population injury caused by the EVOS.