Behavior And Ecology Of The Northern Fur Seal

Author : Roger L. Gentry
Publisher : Princeton University Press
Page : 409 pages
File Size : 49,9 Mb
Release : 2014-07-14
Category : Science
ISBN : 9781400864720

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Behavior and Ecology of the Northern Fur Seal by Roger L. Gentry Pdf

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.

Author : Claudio Campagna,Robert Harcourt
Publisher : Springer Nature
Page : 667 pages
File Size : 49,5 Mb
Release : 2021-06-02
Category : Nature
ISBN : 9783030591847

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Ethology and Behavioral Ecology of Otariids and the Odobenid by Claudio Campagna,Robert Harcourt Pdf

This book is focused on the marine mammalian groups the Otariidae and the Odobenidae, otherwise known as fur seals, sea lions and the walrus. In 30 chapters, more than 60 authors from 30 institutions and 13 nationalities, discuss a broad suite of topics from maternal care and mating behavior, through play, cognition and personality, to adaptation to life in the Anthropocene. The authors explore the behaviors that have allowed these semi-aquatic mammals to thrive in the marine realm. Many populations have recovered following historical decimation, with interesting evolutionary consequences which are explored. Detailed, selected, individual species descriptions are also provided, showcasing the behavioral diversity of this engaging, adaptive and highly successful group of marine mammals.

Author : John P. Croxall
Publisher : Unknown
Page : 224 pages
File Size : 41,7 Mb
Release : 1987
Category : Northern fur seal
ISBN : UCSD:31822016459281

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Status, Biology, and Ecology of Fur Seals by John P. Croxall Pdf

14 species summaries, 12 contributed papers and 5 rapporteurs' reports on fur seals throughout the world including the Pribilof Islands and Antarctica.

Author : United States. National Marine Fisheries Service. Office of Protected Resources. Permits Division
Publisher : Unknown
Page : 1124 pages
File Size : 47,5 Mb
Release : 2007
Category : Northern fur seal
ISBN : UOM:39015077119397

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Steller Sea Lion and Northern Fur Seal Research: Purpose and need; Alternatives; Affected environment; Environmental consequences; National Environmental Policy Act compliance implementation and recommendations; List of preparers; List of agencies, organizations, and persons whom the draft EIS was sent; References; Index by United States. National Marine Fisheries Service. Office of Protected Resources. Permits Division Pdf

Author : Anonim
Publisher : Unknown
Page : 122 pages
File Size : 43,9 Mb
Release : 2007
Category : Electronic
ISBN : NWU:35556036536175

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Steller Sea Lion and Northern Fur Seal Research by Anonim Pdf

Author : Fritz Trillmich,Kathryn A. Ono
Publisher : Springer Science & Business Media
Page : 299 pages
File Size : 50,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642763984

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Pinnipeds and El Niño by Fritz Trillmich,Kathryn A. Ono Pdf

El Niño is a meteorological and oceanographic phenomenon, which occurs at irregular intervals in the eastern tropical Pacific. Its most obvious characteristic is the warming of surface waters, which causes enormous disturbances of the marine environment. A severe Niño may also affect continental systems worldwide. This book gathers in a comprehensive way the information available on the effects of the exceptionally strong 1982-83 Niño on a group of marine mammals, the pinnipeds. It presents an analysis of the effects of environmental stress on the populations of top predators. Data and interpretations are based on a most unusual collection of long-term studies of pinniped population dynamics, behavior and ecology which spanned the El Niño event. The responses of pinniped populations to the El Niño disturbance of the marine ecosystem also has important implications for the management and conservation of marine mammal populations.

Author : Burney J. Le Beouf,Richard M. Laws
Publisher : Univ of California Press
Page : 434 pages
File Size : 51,5 Mb
Release : 2023-11-10
Category : Science
ISBN : 9780520328150

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Elephant Seals by Burney J. Le Beouf,Richard M. Laws Pdf

The largest of all seals, elephant seals rank among the most impressive of marine mammals. They are renowned for their spectacular recovery from near-extinction at the end of the nineteenth century when seal hunters nearly eliminated the entire northern species. No other vertebrate has come so close to extinction and made such a complete recovery. The physiological extremes that elephant seals can tolerate are also remarkable: females fast for a month while lactating, and the largest breeding males fast for over one hundred days during the breeding seasons, at which times both sexes lose forty percent of their body weight. Elephant seals dive constantly during their long foraging migrations, spending more time under water than most whales and diving deeper and longer than any other marine mammal. This first book-length discussion of elephant seals brings together worldwide expertise from scientists who describe and debate recent research, including the history and status of various populations, their life-history tactics, and other findings obtained with the help of modern microcomputer diving instruments attached to free-ranging seals. Essential for all marine mammalogists for its information and its methodological innovations, Elephant Seals will also illuminate current debates about species extinctions and possible means of preventing them. This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1994.

Author : Burney J. Le Beouf,Richard M. Laws
Publisher : Univ of California Press
Page : 434 pages
File Size : 41,9 Mb
Release : 2022-07-15
Category : Nature
ISBN : 9780520368170

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Elephant Seals by Burney J. Le Beouf,Richard M. Laws Pdf

The largest of all seals, elephant seals rank among the most impressive of marine mammals. They are renowned for their spectacular recovery from near-extinction at the end of the nineteenth century when seal hunters nearly eliminated the entire northern species. No other vertebrate has come so close to extinction and made such a complete recovery. The physiological extremes that elephant seals can tolerate are also remarkable: females fast for a month while lactating, and the largest breeding males fast for over one hundred days during the breeding seasons, at which times both sexes lose forty percent of their body weight. Elephant seals dive constantly during their long foraging migrations, spending more time under water than most whales and diving deeper and longer than any other marine mammal. This first book-length discussion of elephant seals brings together worldwide expertise from scientists who describe and debate recent research, including the history and status of various populations, their life-history tactics, and other findings obtained with the help of modern microcomputer diving instruments attached to free-ranging seals. Essential for all marine mammalogists for its information and its methodological innovations, Elephant Seals will also illuminate current debates about species extinctions and possible means of preventing them. This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1994.

Author : Randall W. Davis,Anthony M. Pagano
Publisher : Springer Nature
Page : 366 pages
File Size : 53,9 Mb
Release : 2021-07-03
Category : Science
ISBN : 9783030667962

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Ethology and Behavioral Ecology of Sea Otters and Polar Bears by Randall W. Davis,Anthony M. Pagano Pdf

Sea otters and polar bears are carnivorous marine mammals that still resemble their terrestrial ancestors. Compared with Cetacea (whales and dolphins), Sirenia (dugongs and manatees), and Pinnipedia (seals, sea lions, and walrus), they are less adapted for an aquatic life and the most recently evolved among marine mammals. Sea otters are amphibious but seldom come ashore, and polar bears primarily occur on sea ice or along the shore. When at sea, both species spend most of their time swimming at the surface or making short, shallow dives when foraging or pursuing prey. Indeed, polar bears rarely pursue seals in water. Nevertheless, polar bears are powerful swimmers and will stalk seals from the water. As with many other large carnivores, they are solitary hunters. Although sea otters are gregarious and form aggregations at sea called rafts, they are primarily asocial. Except during mating, the principal interaction among sea otters occurs between a female and offspring during the six-month dependency period. In large carnivores (e.g., wolves and lions) that feed on ungulates, sociality and cooperation are favored because of the need to capture large prey and defend carcasses. Polar bears, which are the largest terrestrial carnivore, are solitary hunters of seals and are neither gregarious nor social. Males and females briefly associate during courtship and mating. During this time, males aggressively compete for females. At other times, males generally avoid each other except for aggregations of males that form while summering on land, and females with cubs avoid males, which are known for infanticide. As with sea otters, the interaction of polar bears outside of mating occurs between a female and her offspring during the 2-3 year dependency period. This interaction is critically important when altricial cubs are born in the winter den. This book provides new insight into the ethology and behavioral ecology of sea otters and polar bears. Each chapter reviews the discoveries of previous studies and integrates recent research using new techniques and technology. The authors also address historic and current anthropogenic challenges for their survival as climate change alters entire marine ecosystems.

Author : Todd J. Braje,Torben C. Rick
Publisher : Univ of California Press
Page : 328 pages
File Size : 55,5 Mb
Release : 2011-03-23
Category : Juvenile Nonfiction
ISBN : 9780520267268

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Human Impacts on Seals, Sea Lions, and Sea Otters by Todd J. Braje,Torben C. Rick Pdf

“The bones recovered from the middens of the northeastern Pacific shorelines have important stories to tell biologists, marine mammalogists, and those concerned with marine conservation. This volume unearths a wealth of information about the historical ecology of seals, sea lions, and sea otters in the North Pacific that spans thousands of years. It provides fascinating insights into how the world once looked, and how it may one day look again as seals, sea lions, and sea otters reclaim and recolonize their former haunts.”—Andrew Trites, Director, Marine Mammal Research Unit, University of British Columbia “Braje and Rick have assembled a compelling set of case studies on the long-term and complex interactions between people, marine mammals, and environments in the Northeast Pacific. The promise of zooarchaeology as historical science is on full display, as researchers use geochemistry, aDNA, morphometrics, and traditional analytic methods to address questions of utmost importance to the long-term health of coastal ecosystems. If this book doesn't convince conservation biology about the need to take the long view of animal histories and ecosystems into account in developing conservation management plans, I'm not sure what will.”—Virginia L. Butler, Department of Anthropology, Portland State University

Author : John N. Kittinger,Loren McClenachan,Keryn B. Gedan,Louise K. Blight
Publisher : Univ of California Press
Page : 310 pages
File Size : 41,7 Mb
Release : 2015-03-25
Category : Nature
ISBN : 9780520959606

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Marine Historical Ecology in Conservation by John N. Kittinger,Loren McClenachan,Keryn B. Gedan,Louise K. Blight Pdf

This pioneering volume provides a blueprint for managing the challenges of ocean conservation using marine historical ecology—an interdisciplinary area of study that is helping society to gain a more in-depth understanding of past human-environmental interactions in coastal and marine ecosystems and of the ecological and social outcomes associated with these interactions. Developed by groundbreaking practitioners in the field, Marine Historical Ecology in Conservation highlights the innovative ways that historical ecology can be applied to improve conservation and management efforts in the oceans. The book focuses on four key challenges that confront marine conservation: (1) recovering endangered species, (2) conserving fisheries, (3) restoring ecosystems, and (4) engaging the public. Chapters emphasize real-world conservation scenarios appropriate for students, faculty, researchers, and practitioners in marine science, conservation biology, natural resource management, paleoecology, and marine and coastal archaeology. By focusing on success stories and applied solutions, this volume delivers the required up-to-date science and tools needed for restoration and protection of ocean and coastal ecosystems.

Author : Anonim
Publisher : Unknown
Page : 156 pages
File Size : 52,5 Mb
Release : 2024-06-30
Category : Marine mammals
ISBN : UCSD:31822009202656

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MMPA Bulletin by Anonim Pdf

Author : A. Rus Hoelzel
Publisher : John Wiley & Sons
Page : 448 pages
File Size : 53,9 Mb
Release : 2009-04-01
Category : Science
ISBN : 9781444311334

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Marine Mammal Biology by A. Rus Hoelzel Pdf

This book provides a general introduction to the biology of marine mammals, and an overview of the adaptations that have permitted mammals to succeed in the marine environment. Each chapter, written by experts in their field, will provide an up-to-date review and present the major discoveries and innovations in the field. Important technical advances such as satellite telemetry and time-depth-recorders will be described in boxes.

Author : Simmonds, M.P,Bauer, A,Parsons, ECM,Wright, A.J,McCafferty, D
Publisher : Jones & Bartlett Publishers
Page : 364 pages
File Size : 48,8 Mb
Release : 2013
Category : Nature
ISBN : 9780763783440

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An Introduction to Marine Mammal Biology and Conswervation by Simmonds, M.P,Bauer, A,Parsons, ECM,Wright, A.J,McCafferty, D Pdf

The charismatic mammals that live in the ocean are a constant source of interest, both for scientists and our society at large. Their biology, behavior, and conservation are of utmost importance, as a vast number of species are currently threatened. Intended for the upper-level undergraduate or graduate student within biology, marine biology, or conservation/environmental science, An Introduction to Marine Mammal Biology and Conservation provides a broad introduction to marine mammal biology using cutting edge information and student-friendly learning tools. The text begins with chapters on the evolution and classification of marine mammals and their general biology. It moves on to discuss the behavior and ecology of different groups of marine mammals, such as polar bears, otters, and cetaceans. Part 3 dives into many different conservation issues facing marine mammals, as well as discussions on how they can be addressed. Closing chapters provide information on how scientists study marine mammals, how society can enjoy observing the animals while making sure they are preserved, and a word to students looking to pursue a career with marine mammals.

Author : Daniel P. Costa,Elizabeth A. McHuron
Publisher : Springer Nature
Page : 651 pages
File Size : 51,7 Mb
Release : 2022-03-17
Category : Science
ISBN : 9783030889234

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Ethology and Behavioral Ecology of Phocids by Daniel P. Costa,Elizabeth A. McHuron Pdf

Phocid (or earless or true) seals are ecologically diverse, occupying habitats from the tropics to the poles in marine and freshwater and feeding on anything from tiny zooplankton to other marine mammals. There are 18 species of phocid seals, the smallest species (ringed seal) is more than 20 times smaller than the largest (southern elephant seal), with marked sexual dimorphism present in some species. This book examines the behavior, ecology, and physiology that allow phocid seals to inhabit such a wide range of habitats. The book is composed of 16 chapters written by 37 authors from 8 countries. The book first describes the general patterns of phocid behavior, followed by descriptions of what is known about well-studied species. We have taken a holistic approach, focusing not only on the behaviors themselves but also on the factors that constrain the expression of behavior and the proximate mechanisms driving behavior. In many cases, the chapters represent collaborations between well-established researchers and early-mid career individuals who bring new perspectives to help carry the field of phocid behavioral ecology well into the future.