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Summer Distribution And Abundance Of Marine Birds And Mammals In The Vicinity Of Naked Island Prince William Sound Alaska In 1978 And Aspects Of The Reproductive Ecology Of The Pigeon Guillemot
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Book Synopsis Summer Distribution and Abundance of Marine Birds and Mammals in the Vicinity of Naked Island, Prince William Sound, Alaska, in 1978, and Aspects of the Reproductive Ecology of the Pigeon Guillemot by : Karen L. Oakley
Download or read book Summer Distribution and Abundance of Marine Birds and Mammals in the Vicinity of Naked Island, Prince William Sound, Alaska, in 1978, and Aspects of the Reproductive Ecology of the Pigeon Guillemot written by Karen L. Oakley and published by . This book was released on 1979 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Annotated Bibliography of Literature on Alaska Water Birds by :
Download or read book An Annotated Bibliography of Literature on Alaska Water Birds written by and published by . This book was released on 1981 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annotated Bibliography of Literature on Alaska Water Birds by : Colleen M. Handel
Download or read book Annotated Bibliography of Literature on Alaska Water Birds written by Colleen M. Handel and published by . This book was released on 1981 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Conservation Assessment for the Marbled Murrelet in Southeast Alaska by : Anthony R. DeGange
Download or read book A Conservation Assessment for the Marbled Murrelet in Southeast Alaska written by Anthony R. DeGange and published by . This book was released on 1996 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis General Technical Report PNW-GTR by :
Download or read book General Technical Report PNW-GTR written by and published by . This book was released on 1996 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FWS/OBS. written by and published by . This book was released on 1981 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Outer Continental Shelf Environmental Assessment Program by :
Download or read book Outer Continental Shelf Environmental Assessment Program written by and published by . This book was released on 1986 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Conditions in Prince William Sound, Alaska by : Sam W. Stoker
Download or read book Biological Conditions in Prince William Sound, Alaska written by Sam W. Stoker and published by . This book was released on 1992 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report summarizes observations recorded during 1989, 1990, 1991, and in 1992 by teams of scientists, including experienced marine biologists who conducted surveys of oiled shorelines in Prince William Sound. Report focuses on the biological environment, particularly the intertidal zone, and addresses both the initial effects and the recovery from the spill.
Book Synopsis Summer Distribution and Abundance of Marine Birds and Mammals Off the Coast of the Alaska Peninsula Between Amber and Kamishak Bays by : Edgar P. Bailey
Download or read book Summer Distribution and Abundance of Marine Birds and Mammals Off the Coast of the Alaska Peninsula Between Amber and Kamishak Bays written by Edgar P. Bailey and published by . This book was released on 1981 with total page 50 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.
Book Synopsis Predation by Marine Birds and Mammals in the Subarctic North Pacific Ocean by : Hidehiro Kat*o
Download or read book Predation by Marine Birds and Mammals in the Subarctic North Pacific Ocean written by Hidehiro Kat*o and published by Sidney, B.C. : North Pacific Marine Science Organization. This book was released on 2000 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Distribution and Abundance of Marine Birds and Mammals Wintering in the Kodiak Area of Alaska by : Douglas J. Forsell
Download or read book Distribution and Abundance of Marine Birds and Mammals Wintering in the Kodiak Area of Alaska written by Douglas J. Forsell and published by . This book was released on 1981 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forty-four species of seabirds and ten species of marine mammals were observed during the winter 1979-80 in the Kodiak Archipelago.
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 104 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 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 The Distribution and Abundance of Marine Birds and Mammals in the Gulf of the Farallones and Adjacent Waters, 1985-1992 by : Sarah Gardner Allen
Download or read book The Distribution and Abundance of Marine Birds and Mammals in the Gulf of the Farallones and Adjacent Waters, 1985-1992 written by Sarah Gardner Allen and published by . This book was released on 1996 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Marine Associated Bird and Mammal Habitat Use at the Five Finger Lighthouse Island by : Lori Beraha
Download or read book Marine Associated Bird and Mammal Habitat Use at the Five Finger Lighthouse Island written by Lori Beraha and published by . This book was released on 2018 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: In summer 2017 I studied the abundance and distribution of marine associated birds and mammals from four observational points on the southernmost of the Five Finger Islands (FFI). My objectives were (1) to identify the areas of highest habitat use by species of conservation concern, and (2) to use this information to make recommendations for an ecosystem-based management plan at the Five Finger Lighthouse Island (FFLI). I found higher relative abundance and higher biodiversity of both birds and marine mammals on the South and West facing sectors compared to the North and East facing sectors. I attribute this to the greater habitat complexity that comprises a near-shore reef, a mixed kelp forest, and a channel between the reef and the side of the island with the highest cliff, areas used extensively for foraging, nesting, traveling, socializing, and resting by many of the documented species. I therefore recommend avoiding development and minimizing anthropogenic disturbance on the southern and western portions of the island including the adjacent reef and channel between the reef and island. As both the FFI ecosystem and the Five Finger Lighthouse (FFL) management continue to evolve in response to changing environmental conditions and human needs, this study provides a useful baseline for future comparison. Continued study and monitoring is also recommended at this site to inform future adaptive management, document changes over time, and engage community stakeholders in science and conservation.
Book Synopsis Oregon and Washington Marine Mammal and Seabird Surveys by :
Download or read book Oregon and Washington Marine Mammal and Seabird Surveys written by and published by . This book was released on 1992 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: