Download or read book Status Biology and Ecology of Fur Seals written by John P. Croxall and published by . This book was released on 1987 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: 14 species summaries, 12 contributed papers and 5 rapporteurs' reports on fur seals throughout the world including the Pribilof Islands and Antarctica.

Download or read book Collected Reprints written by Southwest Fisheries Center (U.S.) and published by . This book was released on 1984 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Collected Reprints written by and published by . This book was released on 1984 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior and Ecology of the Northern Fur Seal written by Roger L. Gentry and published by Princeton University Press. This book was released on 2014-07-14 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the behavior and ecology of the northern fur seal, this book is a model long-term study of marine mammals, one that tests theory through both observation of undisturbed behavior and manipulative experiments on individuals. Here Roger Gentry draws on nearly two decades of research on three different islands to show how behavior among these seals changes with population size, sex ratio, and environment, to explain the behavior of the population beginning with individuals, and to generalize the results to other members of the eared seal family. In so doing, he offers one of the most comprehensive studies of its kind on any marine mammal species to date. Gentry shows that the species is driven by very different behavioral traits than have been assumed for it in the past. His book analyzes behavior on scales of hours to lifetimes, investigates the mating system, considers processes that underlie the mating system (site fidelity, behavioral estrus, and the development of territoriality), and addresses specific aspects of maternal strategy (female attendance behavior, pup growth, seasonal influences, and the effects of continental shelf width). Gentry contributes to knowledge about marine mammals by providing a very specific basis for interspecies comparisons, and he suggests a link between population trend and environmental regime shifts. He also guides the debate over seal mating systems from an interpretive to an empirical or experimental basis. Originally published in 1997. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Download or read book Alaska Fishery and Fur seal Industries in written by and published by . This book was released on 1948 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NOAA Technical Report NMFS written by and published by . This book was released on 1984 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Distribution and Relative Abundance of Pelagic Nonsalmonid Nekton Off Oregon and Washington 1979 84 written by Richard D. Brodeur and published by . This book was released on 1986 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NOAA Technical Report NMFS SSRF written by and published by . This book was released on 1984 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Second International Conference on Marine Debris written by and published by . This book was released on 1990 with total page 1314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fur Seals written by Roger L. Gentry and published by Princeton University Press. This book was released on 2014-07-14 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributors to this volume have accomplished a breakthrough in our ability to collect data on ocean-dwelling mammals. In the first large-scale comparison of fur seals, they have employed quantitative methods and a special instrument called a Time-Depth-Recorder to study the strategies used by females in six species of cared seals to rear and wean their young in different environments. Originally published in 1986. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Download or read book The Bering Sea Ecosystem written by National Research Council and published by National Academies Press. This book was released on 1996-05-08 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bering Sea, which lies between the United States and Russia, is one of the most productive ecosystems in the world and has prolific fishing grounds. Yet there have been significant unexplained population fluctuations in marine mammals and birds in the region. The book examines the Bering Sea ecosystem's dynamics and the relationship between man and the ecosystem, in order to identify potential reasons for the population fluctuations as well as identify ways the Sea's living resources can be better managed by government.

Download or read book Wildlife Abstracts written by U.S. Fish and Wildlife Service and published by . This book was released on 1954 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conservation Plan for the Northern Fur Seal Callorhinus Ursinus written by and published by . This book was released on 1993 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Avian Biology written by Donald S. Farner and published by Elsevier. This book was released on 2013-09-25 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: Avian Biology is a collection of papers that deals with biological aspects of birds such as their classification and habitat behavior. One paper reviews how birds are classified through practical systematics, study of fossils, and some of the problems encountered in the arrangement of major groups. Another paper discusses the origin and evolution of birds from their reptilian predecessors to their current evolutionary rates. Evolutionary rates vary depending on access to new habitats; if the environment is static, evolutionary rates can also slow down. One author discusses the inter-relations of sea birds with their marine environment, including coastal areas and the biological properties of the surface water. Another author describes the biology of desert birds relating to nomadism behavior and physical adaptations especially to the arid environment. The author also describes the cooling mechanism of these desert birds. Another paper evaluates the ecological aspect of behavior that includes foraging, habitat selection, mating, and flocking cohesion. Avian biologists, zoologists, and readers who have a general interest in birds will find this book useful.

Download or read book A Population Study of the Alaska Fur seal Herd written by Karl W. Kenyon and published by . This book was released on 1954 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction. Sources and methods ; Counts and measurements of seals ; Age determination -- Components of the herd. Bulls ; Bachelors ; Pups ; Cows ; Yearlings -- Present size of the herd. Life habits ; Estimate of the size of the herd from the trend of the commercial harvest ; Estimate of the size of the herd from the trend of the harem bull count -- Appendix A. Effect of sealing on fluctuations in herd size 1786-1951 -- Appendix B. Fecundity of males -- Appendix C. Size of the average harem -- Appendix D. Age criteria for bachelor fur seals -- Appendix E. Escapement of bachelors from the commercial kill -- Appendix F. Calculations for the size of the pup class in 1947 from tag recoveries -- Appendix G. Serial photography on the Pribilofs.

Download or read book Opportunistic Feeding of the Northern Fur Seal Callorhinus Ursinus in the Eastern North Pacific Ocean and Eastern Bering Sea written by Hiroshi Kajimura and published by . This book was released on 1984 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mammals in the Seas written by Food and Agriculture Organization of the United Nations. Working Party on Marine Mammals and published by Food & Agriculture Org.. This book was released on 1978 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: