Otters Ecology And Conservation

Author : C. F. Mason,S. M. Macdonald
Publisher : Cambridge University Press
Page : 256 pages
File Size : 41,9 Mb
Release : 2009-02-12
Category : Nature
ISBN : 0521101344

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Otters: Ecology and Conservation by C. F. Mason,S. M. Macdonald Pdf

This book focuses on the European otter, describing its life history, including fresh information and providing details of survey methods and the state of populations throughout the range. Otters have decreased substantially in numbers and range during the present century through a combination of pollution, habitat destruction and direct persecution. The otter, at the top of the food chain, is a vulnerable animal in a vulnerable environment - the river - and can be seen as an indicator of a healthy environment; a good otter population indicates a properly functioning river ecosystem. The research of the authors highlights the fact that successful conservation of this familiar though elusive animal depends upon public education and sympathy as much as upon detailed ecological knowledge. This account will appeal to amateur naturalists, teachers of natural history and biological sciences and students of animal ecology and conservation. It also provides an important reference for professional conservationists and wildlife biologists.

Author : Hans Kruuk
Publisher : Oxford University Press
Page : 278 pages
File Size : 43,5 Mb
Release : 2006-08-17
Category : Nature
ISBN : 9780198565864

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Otters by Hans Kruuk Pdf

Hans Kruuk offers a meticulous survey of otter species and recent research into their ecology, covering all 13 species worldwide & emphasising conservation management initiatives.

Author : Shawn E. Larson,James L. Bodkin,Glenn R VanBlaricom
Publisher : Academic Press
Page : 468 pages
File Size : 46,6 Mb
Release : 2014-12-23
Category : Science
ISBN : 9780128016879

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Sea Otter Conservation by Shawn E. Larson,James L. Bodkin,Glenn R VanBlaricom Pdf

Sea otters are good indicators of ocean health. In addition, they are a keystone species, offering a stabilizing effect on ecosystem, controlling sea urchin populations that would otherwise inflict damage to kelp forest ecosystems. The kelp forest ecosystem is crucial for marine organisms and contains coastal erosion. With the concerns about the imperiled status of sea otter populations in California, Aleutian Archipelago and coastal areas of Russia and Japan, the last several years have shown growth of interest culturally and politically in the status and preservation of sea otter populations. Sea Otter Conservation brings together the vast knowledge of well-respected leaders in the field, offering insight into the more than 100 years of conservation and research that have resulted in recovery from near extinction. This publication assesses the issues influencing prospects for continued conservation and recovery of the sea otter populations and provides insight into how to handle future global changes. Covers scientific, cultural, economic and political components of sea otter conservation Provides guidance on how to manage threats to the sea otter populations in the face of future global changes Highlights the effects that interactions of coastal animals have with the marine ecosystem

Author : Hans Kruuk
Publisher : OUP Oxford
Page : 306 pages
File Size : 45,8 Mb
Release : 1995-02-23
Category : Science
ISBN : 9780191589072

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Wild Otters by Hans Kruuk Pdf

Evidence pointing to a decline in the European Otter population (Lutra lutra) is causing concern among ecologists and conservationists. This important new book written from direct observation of otter populations in Scotland, is the first attempt at a scientific description of populations and behaviour of this species. This essential research offers a fascinating insight into the ecology of mammals living in a hostile environment and provides a much needed basis for active conservation management.

Author : Suzanne Slade
Publisher : Capstone
Page : 14 pages
File Size : 53,7 Mb
Release : 2010-07
Category : Juvenile Nonfiction
ISBN : 9781404863972

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What If There Were No Sea Otters? by Suzanne Slade Pdf

Discusses the ocean ecosystem and the role of the sea otter as a keystone species in helping to maintain it, describing the otter's place on the food chain and what would happen if the sea otter were to become extinct.

Author : Todd J. Braje,Torben C. Rick
Publisher : Univ of California Press
Page : 328 pages
File Size : 44,5 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 : Shawn Larson,James Bodkin,Erin Foster
Publisher : Elsevier
Page : 0 pages
File Size : 40,6 Mb
Release : 2024-06-01
Category : Science
ISBN : 9780443188046

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Sea Otter Conservation by Shawn Larson,James Bodkin,Erin Foster Pdf

Sea Otter Conservation: Nearshore Ecosystem Restoration offers the most updated and revised ecological knowledge for conserving sea otters and their coastal habitats. As sea otters are good indicators of ocean health, they are also keystone species, offering a stabilizing effect on ecosystems, controlling sea urchin populations that can damage kelp forests and thus curbing coastal erosion. This book synthesizes the important relationship between sea otters and conservation of themselves as well as vital marine ecosystems. Written by experts in the field, this book is structured into two sections to focus first on the latest data, practices, and hands-on research for conserving coastal ecosystems. This section offers links between sea otter presence and increased kelp, seagrass, and geological conservation. The second section focuses on the sea otter specifically, providing up-to-date research, data, and case studies regarding their genetics, habitats, and impacts of climate change. Sea Otter Conservation: Nearshore Ecosystem Restoration is a vital new edition for marine biologists, conservationists, and zoologists studying sea otters and their environmental importance. Covers the key scientific, ecological, and management aspects of sea otter recovery, conservation, and associated ecosystem effects Provides guidance on how to facilitate ecosystem restoration through keystone species conservation in the face of future global changes such as climate change Highlights the range of effects that keystone species have on coastal marine ecosystems

Author : Randall W. Davis,Anthony M. Pagano
Publisher : Springer
Page : 0 pages
File Size : 55,6 Mb
Release : 2022-07-05
Category : Science
ISBN : 3030667987

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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 : Paul Yoxon,Grace M. Yoxon
Publisher : Whittles
Page : 0 pages
File Size : 44,5 Mb
Release : 2014
Category : Nature
ISBN : 1849951292

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Otters of the World by Paul Yoxon,Grace M. Yoxon Pdf

The illegal wildlife trade in otters is huge - not just for furs and body parts but as pets

Author : Liliana Ayala
Publisher : Springer Nature
Page : 164 pages
File Size : 53,7 Mb
Release : 2024-06-30
Category : Electronic
ISBN : 9783031539312

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Marine Otter Conservation by Liliana Ayala Pdf

Author : Pat Foster-Turley,S. M. Macdonald,Chris Mason,C. F. Mason,IUCN/SSC Otter Specialist Group
Publisher : International Union for Conservation of Nature and Natural
Page : 142 pages
File Size : 44,5 Mb
Release : 1990
Category : Nature
ISBN : UCSD:31822033836693

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Otters by Pat Foster-Turley,S. M. Macdonald,Chris Mason,C. F. Mason,IUCN/SSC Otter Specialist Group Pdf

Author : Jocelyne Hughes
Publisher : Oxford University Press
Page : 480 pages
File Size : 41,5 Mb
Release : 2018-11-30
Category : Science
ISBN : 9780191079122

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Freshwater Ecology and Conservation by Jocelyne Hughes Pdf

This practical manual of freshwater ecology and conservation provides a state-of-the-art review of the approaches and techniques used to measure, monitor, and conserve freshwater ecosystems. It offers a single, comprehensive, and accessible synthesis of the vast amount of literature for freshwater ecology and conservation that is currently dispersed in manuals, toolkits, journals, handbooks, 'grey' literature, and websites. Successful conservation outcomes are ultimately built on a sound ecological framework in which every species must be assessed and understood at the individual, community, catchment and landscape level of interaction. For example, freshwater ecologists need to understand hydrochemical storages and fluxes, the physical systems influencing freshwaters at the catchment and landscape scale, and the spatial and temporal processes that maintain species assemblages and their dynamics. A thorough understanding of all these varied processes, and the techniques for studying them, is essential for the effective conservation and management of freshwater ecosystems.

Author : James A. Estes
Publisher : Univ of California Press
Page : 294 pages
File Size : 50,6 Mb
Release : 2020-11-10
Category : Science
ISBN : 9780520377493

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Serendipity by James A. Estes Pdf

"Many of the findings in the book . . . are classics of ecology. . . . A rare and delightful insight into timely science."—Jane Lubchenco, Nature "Estes's refreshing narrative deftly weaves rigorous science with personal reflection to create an absorbing and introspective read that is equal parts memoir, ecological textbook, and motivational guidebook for young ecologists."—Science To newly minted biologist James Estes, the sea otters he was studying in the leafy kelp forests off the coast of Alaska appeared to have an unbalanced relationship with their greater environment. Gorging themselves on the sea urchins that grazed among the kelp, these small charismatic mammals seemed to give little back in return. But as Estes dug deeper, he unearthed a far more complex relationship between the otter and its underwater environment, discovering that otters play a critical role in driving positive ecosystem dynamics. While teasing out the connective threads, he began to question our assumptions about ecological relationships. These questions would ultimately inspire a lifelong quest to better understand the surprising complexity of our natural world and the unexpected ways we discover it. Serendipity tells the story of James Estes’s life as a naturalist and the concepts that have driven his interest in researching the ecological role of top-level predators. Using the relationships between sea otters, kelp, and sea urchins as a touchstone, Estes retraces his investigations of numerous other species, ecosystems, and ecological processes in an attempt to discover why ecologists can learn so many details about the systems in which they work and yet understand so little about the broader processes that influence these systems. Part memoir, part natural history, and deeply inquisitive, Serendipity will entertain and inform readers as it raises thoughtful questions about our relationship with the natural world.

Author : Nicole Duplaix,Melissa Savage
Publisher : Unknown
Page : 128 pages
File Size : 47,5 Mb
Release : 2018-11
Category : Electronic
ISBN : 0692042229

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Global Otter Conservation Strategy by Nicole Duplaix,Melissa Savage Pdf

Author : Ned Horning,Julie A. Robinson,Eleanor J. Sterling,Sacha Spector,Woody Turner
Publisher : Oxford University Press
Page : 494 pages
File Size : 45,8 Mb
Release : 2010-07
Category : Nature
ISBN : 9780199219957

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Remote Sensing for Ecology and Conservation by Ned Horning,Julie A. Robinson,Eleanor J. Sterling,Sacha Spector,Woody Turner Pdf

Conservation Biology, techniques, applications.