Download or read book Ecology of the Northern Fur Seal callorhinus Ursinus from the Middle and Late Holocene of California written by Robert Kevin Burton and published by . This book was released on 2000 with total page 192 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 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 The Northern Fur Seal Callorhinus Ursinus written by Teresa Clocksin and published by . This book was released on 1985 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1327 citations of publications dealing with the northern fur seal (Callorhinus ursinus). Includes subject index. Draft copy.

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 The Archaeology and Historical Ecology of Late Holocene San Miguel Island written by Torben C. Rick and published by Cotsen Institute of Archaeology Press. This book was released on 2007-12-31 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: California's northern Channel Islands have one of the longest and best-preserved archaeological records in the Americas, spanning some 13,000 calendar years. When European explorers first travelled to the area, these islands were inhabited by the Chumash, some of the most populous and culturally complex hunter-gatherers known. Chumash society was characterised by hereditary leaders, sophisticated exchange networks and interaction spheres, and diverse maritime economies. Focusing on the archaeology of five sites dated to the last 3,000 years, this book examines the archaeology and historical ecology of San Miguel Island, the westernmost and most isolated of the northern Channel Islands. Detailed faunal, artefact, and other data are woven together in a diachronic analysis that investigates the interplay of social and ecological developments on this unique island. The first to focus solely on San Miguel Island archaeology, this book examines issues ranging from coastal adaptations to emergent cultural complexity to historical ecology and human impacts on ancient environments.

Download or read book The Effects of Human Hunting on Northern Fur Seal Callorhinus Ursinus Migration and Breeding Distributions in the Late Holocene written by Michael A. Etnier and published by . This book was released on 2002 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: Northern fur seals (Callorhinus ursinus) have figured prominently in archaeological and contemporary biological studies on the west coast of North America. Previous research indicates that major changes in fur seal biogeography have occurred within the past 100-300 years. This dissertation evaluates what role human hunting has had in causing these changes. Determining the extent, the timing, and the cause (or causes) of the changes in fur seal biogeography is directly relevant to a wide variety of archaeological and zoological studies that involve fur seal distributions during the late Holocene. To do this, I develop variables with which to measure the age composition of fur seals being exploited, with particular emphasis on identifying the breeding distribution of fur seals. Analysis of archaeological fur seal skeletal material clearly indicates that the breeding distribution of fur seals was much more widespread than historically documented, with previously-unidentified rookeries in Alaska, and on or near the Washington coast. This breeding distribution appears to have been stable until the early historic period. Because population-level effects of harvest pressure may have pre-dated changes in fur seal biogeography, I also measure individual growth rates of fur seals, which scale inversely with population density. Male fur seals from the Ozette assemblage tended to be smaller in any given age class than animals collected during the 20th century from the Pribilof Islands population. Although it cannot be determined if this size difference reflects a population level consistently at carrying capacity, or latitudinal differences in body size, the pattern is consistent throughout the Ozette sequence, indicating that prehistoric hunting did not significantly affect fur seal population levels over the time period examined. The data examined here suggest that prehistoric exploitation of fur seals was sustainable, and that all of the biogeographic changes documented for fur seals were caused by the commercial fur trade. More generally, the research presented here adds a unique viewpoint to a long-standing debate regarding the propensity of humans to over-exploit their resource bases. The temporal sequences of fur seal exploitation presented here clearly indicate that over-exploitation is not a universal characteristic of subsistence economies.

Download or read book California Prehistory written by Terry L. Jones and published by Rowman Altamira. This book was released on 2007-07-16 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some forty scholars examine California's prehistory and archaeology, looking at marine and terrestrial palaeoenvironments, initial human colonization, linguistic prehistory, early forms of exchange, mitochondrial DNA studies, and rock art. This work is the most extensive study of California's prehistory undertaken in the past 20 years. An essential resource for any scholar of California prehistory and archaeology!

Download or read book Human Impacts on Seals Sea Lions and Sea Otters written by Todd J. Braje and published by Univ of California Press. This book was released on 2011-03-23 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than ten thousand years, Native Americans from Alaska to southern California relied on aquatic animals such as seals, sea lions, and sea otters for food and raw materials. Archaeological research on the interactions between people and these marine mammals has made great advances recently and provides a unique lens for understanding the human and ecological past. Archaeological research is also emerging as a crucial source of information on contemporary environmental issues as we improve our understanding of the ancient abundance, ecology, and natural history of these species. This groundbreaking interdisciplinary volume brings together archaeologists, biologists, and other scientists to consider how archaeology can inform the conservation and management of pinnipeds and other marine mammals along the Pacific Coast.

Download or read book Comparison of Foraging Patterns Between Northern Fur Seal Callorhinus Ursinus Pups and Adult Females from San Miguel Island California Using Stable Isotope Analysis written by Tanner Howard and published by . This book was released on 2018 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecogeochemistry has become a useful tool in studying foraging ecology of marine mammals and other consumers. Ratios of stable carbon ([delta]13C) and nitrogen ([delta]15N) isotopes in consumer tissues can reflect foraging history over longer time spans than traditional methods of dietary analysis. To better understand overall foraging patterns and potential stable isotope relationships between individuals from different age groups within the same population, I measured stable isotope values from unrelated northern fur seal (Callorhinus ursinus) pups and post-parturient adult females from San Miguel Island, California. Fur seals at San Miguel Island can be severely impacted by climate events such as the El Niño Southern Oscillation, increasing the need to further understand their foraging ecology. I analyzed sequential [delta]13C and [delta]15N values along single whiskers from five pups and five adult females, estimated pup and in utero whisker growth rates, and reconstructed stable isotope profiles over time for each vibrissa. I then performed correlation tests on the stable isotope profiles to compare mean [delta]13C and [delta]15N values from pups and adult females. Pups had significantly lower [delta]13C values and significantly higher [delta]15N values than adult females over an overlapping 50-day period prior to tissue collection. Stable isotope profiles for pups were significantly correlated, but there were no correlations among adult female stable isotope profiles. My results suggest large inter-individual variation among adult female foraging patterns, no significant relationship between stable isotope values from unrelated pups and adult females, and potentially distinct stable isotope minima indicating the birth event for pups.

Download or read book Catalysts to Complexity written by Jon Erlandson and published by Cotsen Institute of Archaeology Press. This book was released on 2003-07-01 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the Spanish colonized it in AD 1769, the California Coast was inhabited by speakers of no fewer than 16 distinct languages and an untold number of small, autonomous Native communities. These societies all survived by foraging, and ethnohistoric records show a wide range of adaptations emphasizing a host of different marine and terrestrial foods. Many groups exhibited signs of cultural complexity including sedentism, high population density, permanent social inequality, and sophisticated maritime technologies. The ethnographic era was preceded by an archaeological past that extends back to the terminal Pleistocene. Essays in this volume explore the last three and one half millennia of this long history, focusing on the archaeological signatures of emergent cultural complexity. Organized geographically, they provide an intricate mosaic of archaeological, historic, and ethnographic findings that illuminate cultural changes over time. To explain these Late Holocene cultural developments, the authors address issues ranging from culture history, paleoenvironments, settlement, subsistence, exchange, ritual, power, and division of labor, and employ both ecological and post-modern perspectives. Complex cultural expressions, most highly developed in the Santa Barbara Channel and the North Coast, are viewed alternatively as fairly recent and abrupt responses to environmental flux or the end-product of gradual progressions that began earlier in the Holocene.

Download or read book Human Impacts on Seals Sea Lions and Sea Otters written by Todd J. Braje and published by Univ of California Press. This book was released on 2011-03-23 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: “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

Download or read book 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 written by United States. National Marine Fisheries Service. Office of Protected Resources. Permits Division and published by . This book was released on 2007 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Ecosystems of California written by Harold Mooney and published by Univ of California Press. This book was released on 2016-01-19 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long-anticipated reference and sourcebook for CaliforniaÕs remarkable ecological abundance provides an integrated assessment of each major ecosystem typeÑits distribution, structure, function, and management. A comprehensive synthesis of our knowledge about this biologically diverse state, Ecosystems of California covers the state from oceans to mountaintops using multiple lenses: past and present, flora and fauna, aquatic and terrestrial, natural and managed. Each chapter evaluates natural processes for a specific ecosystem, describes drivers of change, and discusses how that ecosystem may be altered in the future. This book also explores the drivers of CaliforniaÕs ecological patterns and the history of the stateÕs various ecosystems, outlining how the challenges of climate change and invasive species and opportunities for regulation and stewardship could potentially affect the stateÕs ecosystems. The text explicitly incorporates both human impacts and conservation and restoration efforts and shows how ecosystems support human well-being. Edited by two esteemed ecosystem ecologists and with overviews by leading experts on each ecosystem, this definitive work will be indispensable for natural resource management and conservation professionals as well as for undergraduate or graduate students of CaliforniaÕs environment and curious naturalists.

Download or read book Energetics and Development of Northern Fur Seal Callorhinus Ursinus Pups written by Mary Jill Donohue and published by . This book was released on 1998 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigations on the Water Balance and Assimilation Efficiency of the Northern Fur Seal Callorhinus Ursinus written by Brian Scott Fadely and published by . This book was released on 1989 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: