Download or read book Foraging Ecology and Population Demography of Waved Albatrosses Phoebastria Irrorata written by Jill A. Awkerman and published by . This book was released on 2007 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Key words. Phoebastria irrorala, Galapagos Islands, Seabird habitat.
Download or read book Comparative Foraging Ecology and Energetics of Albatrosses written by Michelle Kappes and published by . This book was released on 2009 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population size and trends of the waved albatross Phoebastria irrorata written by D.J. Anderson and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparative Foraging Ecology of Five Species of Pacific Seabirds written by Robert M. Suryan and published by . This book was released on 2006 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seabirds are an integral component of marine ecosystems, however, because humans typically observe only snapshots of their lives at sea, our understanding of seabird foraging ecology is often limited. A more complete understanding of the ecological roles of seabirds and identification of critical foraging habitats requires the ability to follow individuals at-sea. I analyzed continuous tracking data from blacklegged kittiwakes (Rissa tridactyla) and four species of Pacific albatrosses to determine if foraging time budgets and at-sea movement patterns were associated with prey type (kittiwakes) and remotely sensed environmental variables (albatrosses). Furthermore, I identified variables affecting the spatial scale of search behavior and, for kittiwakes, the effect this has on reproductive success. Black-legged kittiwakes in Prince William Sound, Alaska, increased the number of feeding attempts with increases in the consumption of young-of-year fish and the numbers of feeding flocks encountered, both leading to greater time spent searching for food. Greater search effort translated into longer foraging trip duration (i.e., less frequent nestling provisioning), which was a dominant variable affecting reproductive success. Not surprisingly, area-restricted search activity for kittiwakes occurred over spatial scales two orders of magnitude less than that of short-tailed albatrosses (Phoebastria albatrus; 0.8 km vs. 70 km, respectively). For kittiwakes, the scale of area-restricted search was most prominently associated with prey type. I adapted firstpassage time analysis to model habitat use as a continuous process along a movement path and found that area-restricted search activity of short-tailed albatrosses was greatest along the continental shelf break and slope within regions of higher gradients of depth and chlorophyll a. Wind speed also was an important variable affecting albatross movements. By capitalizing on ocean surface wind and wave energy, albatrosses efficiently travel over vast expanses of the world?s oceans. I analyzed albatross aerodynamics and satellite remote sensing data to demonstrate that the four species of albatrosses inhabiting the North and Central Pacific Ocean exhibit differences in flight morphology that are generally consistent with respect to prevailing wind and wave conditions encountered. Some individuals, however, ventured into regions of apparently suboptimal wind and wave conditions to presumably exploit preferred foraging opportunities.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foraging Ecology of Wandering Albatrosses Diomedea Exulans written by Scott Andrew Shaffer and published by . This book was released on 2000 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foraging Ecology and Population Status of New Zealand Black browed and Grey headed Albatrosses Campbell Island written by Sue Waugh and published by . This book was released on 1999 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Fisheries on the Foraging Ecology and Demography of Breeding Black browed Albatross Thalassarche Melanophris in the Falkland Islands written by A. Kuepfer and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Albatross Biology and Conservation written by Graham Robertson and published by . This book was released on 1998 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the Inaugural Albatross Conference in Hobart in 1995. Thirteen chapters are based directly on conference papers, and ten have been written subsequently. Topics covered include albatross taxonomy, ecology, feeding and breeding habits, population and distribution as well as the effect of human activities on albatross mortality. Examines the conservation of albatrosses and threats to their survival, in particular the incidental mortality associated with long line fisheries. Appraises recent research in albatross biology, ecology and conservation and discusses opportunities for future research.
Download or read book Albatrosses written by Terence Lindsey and published by CSIRO PUBLISHING. This book was released on 2008-06-22 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most albatrosses range across the Southern Hemisphere from Antarctica to Australia and from South Africa to South America. The ferocious air encircling Antarctica is an impossible place for almost all non-aquatic animals, but not for the albatross. The most distinctive characteristic of albatrosses is that they ride storms. They do not evade storms, or flee them, but climb aboard and ride them – effectively throughout their lives. Aside from a few close relatives among the petrels and shearwaters, they are the only animals that do this. Albatrosses outlines the life histories of these spectacular birds, and explores some of the main strategies that have evolved to enable them to achieve mastery of one of the most hostile regions on the planet. Complemented by stunning photographs taken from remote locations, this book will be treasured by natural history and bird enthusiasts.
Download or read book Foraging ecology of albatrosses and petrels from South Georgia written by R.A. PHILLIPS and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foraging Ecology of the Campbell Albatross written by Lisa Ann Sztukowski and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Ornithology written by and published by . This book was released on 1999 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seafloor Geomorphology as Benthic Habitat written by Peter Harris and published by Elsevier. This book was released on 2011-11-28 with total page 947 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation This book provides a synthesis of seabed geomorphology and benthic habitats based on the most recent, up-to-date information. Case studies from around the world are presented.
Download or read book The Galapagos Marine Reserve written by Judith Denkinger and published by Springer Science & Business Media. This book was released on 2014-01-24 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on how marine systems respond to natural and anthropogenic perturbations (ENSO, overfishing, pollution, tourism, invasive species, climate-change). Authors explain in their chapters how this information can guide management and conservation actions to help orient and better manage, restore and sustain the ecosystems services and goods that are derived from the ocean, while considering the complex issues that affect the delicate nature of the Islands. This book will contribute to a new understanding of the Galapagos Islands and marine ecosystems.
Download or read book The Ad lie Penguin written by David Ainley and published by Columbia University Press. This book was released on 2002-10-01 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Adélie penguin is one of the best-studied birds in the world and is the subject of research programs from a dozen nations interested in monitoring changes in the environment and the food webs of the Southern Ocean. This species' population has been changing dramatically over the past few decades coincident with a general warming of the maritime portion of Antarctica. When the sea-ice is seen to decline so does the population of Adélie penguins. Further south, however, the population is increasing. This book summarizes our present ecological knowledge of this polar seabird. In so doing, David Ainley describes the ecological factors important to its life history and details the mechanisms by which it is responding to climate change. The author also chronicles the history of research on Adélie penguins, beginning with the heroic expeditions at the beginning of the twentieth century. Weaving together history, ecology, natural history, and written accounts from the earliest Antarctic naturalists into a fascinating account of this charismatic bird, The Adélie Penguin provides a foundation upon which future ornithological research and environmental monitoring can be based. It is a model for investigations into the effect of climate change on a particular species. The book also contains many fine illustrations from the accomplished illustrator Lucia deLeiris and photographs by the author.
Download or read book Petrels Albatrosses and Storm Petrels of North America written by Steve N. G. Howell and published by Princeton University Press. This book was released on 2012-01-24 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete illustrated guide to these enigmatic seabirds Petrels, albatrosses, and storm-petrels are among the most beautiful yet least known of all the world's birds, living their lives at sea far from the sight of most people. Largely colored in shades of gray, black, and white, these enigmatic and fast-flying seabirds can be hard to differentiate, particularly from a moving boat. Useful worldwide, not just in North America, this photographic guide is based on unrivaled field experience and combines insightful text and hundreds of full-color images to help you identify these remarkable birds. The first book of its kind, this guide features an introduction that explains ocean habitats and the latest developments in taxonomy. Detailed species accounts describe key identification features such as flight manner, plumage variation related to age and molt, seasonal occurrence patterns, and migration routes. Species accounts are arranged into groups helpful for field identification, and an overview of unique identification challenges is provided for each group. The guide also includes distribution maps for regularly occurring species as well as a bibliography, glossary, and appendixes. The first state-of-the-art photographic guide to these enigmatic seabirds Includes hundreds of full-color photos throughout Features detailed species accounts that describe flight, plumage, distribution, and more Provides overviews of ocean habitats, taxonomy, and conservation Offers tips on how to observe and identify birds at sea
