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Book Pelagic Distribution and Abundance of Seabirds in the Gulf of Alaska and Eastern Bering Sea

Download or read book Pelagic Distribution and Abundance of Seabirds in the Gulf of Alaska and Eastern Bering Sea written by Patrick J. Gould and published by . This book was released on 1982 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlas based on censuses conducted from ships and aircraft over waters of the Gulf of Alaska and eastern Bering Sea.

Book Chukchi Sea Planning Area Oil and Gas Lease Sale 193 in the Chukchi Sea Alaska Revised Draft Supplemental Environmental Impact Statement

Download or read book Chukchi Sea Planning Area Oil and Gas Lease Sale 193 in the Chukchi Sea Alaska Revised Draft Supplemental Environmental Impact Statement written by and published by DIANE Publishing. This book was released on with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book MMS

Download or read book MMS written by and published by . This book was released on 1990 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Wildlife Review

Download or read book Wildlife Review written by and published by . This book was released on 1988 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Chukchi Sea Oil Gas Lease Sale 126

Download or read book Chukchi Sea Oil Gas Lease Sale 126 written by and published by . This book was released on 1991 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Environmental Information for Outer Continental Shelf Oil and Gas Decisions in Alaska

Download or read book Environmental Information for Outer Continental Shelf Oil and Gas Decisions in Alaska written by National Research Council and published by National Academies Press. This book was released on 1994-02-01 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the adequacy of information available for predicting and managing the environmental and human effects of oil and gas activities on Alaska's Outer Continental Shelf (OCS). It examines how the Alaskan OCS and adjacent onshore natural and human environments differ from those in more temperate waters and to what degree the information characterizes those differences. (It also recommends alternatives to further studies in some cases where more information would be helpful for decisionmaking.)

Book The Offshore Environmental Studies Program 1973 1989

Download or read book The Offshore Environmental Studies Program 1973 1989 written by and published by . This book was released on 1990 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Auks at Sea

    Auks at Sea

    Book Details:
  • Author : Pacific Seabird Group. International Symposium
  • Publisher :
  • Release : 1990
  • ISBN :
  • Pages : 192 pages

Download or read book Auks at Sea written by Pacific Seabird Group. International Symposium and published by . This book was released on 1990 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Marine Ornithology

Download or read book Marine Ornithology written by and published by . This book was released on 2003 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Outer Continental Shelf Oil Gas Leasing Program 2012 2017

Download or read book Outer Continental Shelf Oil Gas Leasing Program 2012 2017 written by and published by . This book was released on 2012 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the potential environmental impacts of the Proposed Final 2012-2017 Outer Continental Shelf (OCS) Oil and Gas Leasing Program (PFP), which establishes a schedule that is used as a basis for considering where and when oil and gas leasing might be appropriate over a 5-year period.

Book Alaska Outer Continental Shelf Seismic Surveys in the Beaufort and Chukchi Seas

Download or read book Alaska Outer Continental Shelf Seismic Surveys in the Beaufort and Chukchi Seas written by and published by . This book was released on 2007 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Influence of Physical and Biological Oceanography on the Structure of the Seabird Community in the Northeastern Chukchi Sea

Download or read book Influence of Physical and Biological Oceanography on the Structure of the Seabird Community in the Northeastern Chukchi Sea written by Adrian E. Gall and published by . This book was released on 2015 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chukchi Sea is losing seasonal ice cover as global temperatures rise, facilitating human access to the region for activities such as oil and gas exploration, shipping, and tourism. Processes and responses to environmental change by marine ecosystems are often challenging to quantify because they are hidden under water. Seabirds, however, offer visible evidence of the health and status of marine ecosystems. I studied the community structure, variability in abundance and distribution, and habitat associations of seabirds in the eastern Chukchi Sea. My results provide insights into the influence of climate change on seabirds and a benchmark against which to evaluate possible impacts of anthropogenic activity. Repeated sampling of systematic transects in the northeastern Chukchi Sea during the ice-free seasons of 2008-2012 showed that the community consisted of ~40 species and was dominated numerically by planktivorous seabirds, particularly Crested Auklets (Aethia cristatella) and Short-tailed Shearwaters (Puffinus tenuirostris). In contrast, benthic-feeding birds were rare. The abundance of seabirds in the offshore northeastern Chukchi Sea varied by up to two orders of magnitude among years and birds generally were more abundant in September than August. Despite these seasonal and interannual variations in abundance, the species composition was similar among years, with anomalies occurring only in years of persistent ice cover. I compared data from this recent period (2008-2012) with data from historical surveys (1975-1981) to evaluate decadal trends in seabird abundance and composition and related those changes to reductions in seasonal ice cover. The seabird community shifted from one consisting primarily of piscivorous seabirds to one consisting primarily of planktivorous seabirds. This shift suggests that zooplankton prey are more accessible now to avian predators as seasonal ice cover has declined. I explored the relationships between seabirds, hydrography, and zooplankton abundance with spatially explicit generalized additive models. The associations of seabirds with habitat characteristics varied with foraging method and preferred prey. Species that fed primarily by pursuit diving were more abundant in warm, weakly stratified water, whereas surface-feeding species were more abundant in cold, strongly stratified water. Planktivorous seabirds (auklets, shearwaters, and phalaropes) were more abundant within 20 km of thermal surface fronts and in contrast, omnivores (gulls and murres) were more abundant far from thermal fronts. For 5 of the 8 seabird species, information about prey biomass improved predictions of seabird abundance, although the relationships were not as clear as they were for the physical habitat characteristics indicative of processes that aggregate prey. Advective processes that transport oceanic species of zooplankton from the Bering Sea to the Chukchi Sea, together with the local influence of sea ice on physical and biological processes, strongly influence the distribution of seabirds, particularly the planktivorous species. Scientists and decision-makers can use the results of this multi-species and multi-disciplinary study as a benchmark to assess the ecological consequences of anthropogenic activity against the backdrop of climate change that is affecting the Chukchi Sea.