The Community Ecology Of Sea Otters
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The Community Ecology Of Sea Otters
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Author : Glenn R. VanBlaricom
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
The Community Ecology Of Sea Otters written by Glenn R. VanBlaricom and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
The impetus for this volume comes from two sources. The first is scientific: by virtue of a preference for certain large benthic invertebrates as food, sea otters have interesting and significant effects on the structure and dynamics of nearshore communities in the North Pacific. The second is political: be cause of the precarious status of the sea otter population in coastal California, the U.S. Fish and Wildlife Service (USFWS) announced, in June 1984, a proposal to establish a new population of sea otters at San Nicolas Island, off southern California. The proposal is based on the premise that risks of catastrophic losses of sea otters, due to large oil spills, are greatly reduced by distributing the population among two geographically separate locations. The federal laws of the U.S. require that USFWS publish an Environmental Impact Statement (ElS) regarding the proposed translocation of sea otters to San Nicolas Island. The EIS is intended to be an assessment of likely bio logical, social, and economic effects of the proposal. In final form, the EIS has an important role in the decision of federal management authority (in this case, the Secretary of the Interior of the U.S.) to accept or reject the proposal.
Sea Otter Conservation
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Author : Shawn E. Larson
language : en
Publisher: Academic Press
Release Date : 2014-12-23
Sea Otter Conservation written by Shawn E. Larson and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-12-23 with Science categories.
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
Ethology And Behavioral Ecology Of Sea Otters And Polar Bears
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Author : Randall W. Davis
language : en
Publisher: Springer Nature
Release Date : 2021-07-03
Ethology And Behavioral Ecology Of Sea Otters And Polar Bears written by Randall W. Davis and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-07-03 with Science categories.
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.
Serendipity
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Author : James A. Estes
language : en
Publisher: Univ of California Press
Release Date : 2020-11-10
Serendipity written by James A. Estes and has been published by Univ of California Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-10 with Science categories.
"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.
The Sea Otter Enhydra Lutris
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Author : Marianne Riedman
language : en
Publisher:
Release Date : 1991
The Sea Otter Enhydra Lutris written by Marianne Riedman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Enhydra categories.
Restoring Sea Otters To The Oregon Coast
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Author : Tim Tinker
language : en
Publisher:
Release Date : 2023-06
Restoring Sea Otters To The Oregon Coast written by Tim Tinker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-06 with categories.
Sea Otter Conservation
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Author : Shawn Larson
language : en
Publisher: Elsevier
Release Date : 2024-06-01
Sea Otter Conservation written by Shawn Larson and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-06-01 with Science categories.
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
Sea Otter Heroes
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Author : Patricia Newman
language : en
Publisher: Millbrook Press ™
Release Date : 2017-01-01
Sea Otter Heroes written by Patricia Newman and has been published by Millbrook Press ™ this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-01 with Juvenile Nonfiction categories.
A Robert F. Sibert Informational Honor Book A Green Earth Book Award Winner This up-close look at a fascinating scientific discovery highlights the critical role predators such as sea otters play in keeping ecosystems healthy. In Elkhorn Slough, an inlet on the California coast, seagrass grows healthy and strong in the shallow water. This healthy seagrass baffled marine biologist Brent Hughes. The scientist expected this estuary to be overrun with algae, causing the seagrass to die. Why was the seagrass thriving? As Brent investigated, signs pointed to an unexpected player helping to keep the seagrass healthy: sea otters! What do these top predators have to do with an aquatic grass at the opposite end of the food chain? Brent's amazing discovery gave scientists insight into the delicate balance of ecosystems. Follow science in action as Brent conducts the research that led to this major discovery.
Sea Otters
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Author : Gena Bentali
language : en
Publisher:
Release Date : 2020
Sea Otters written by Gena Bentali and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
The SENTINEL of the KELP FORESTThe Sea Otter is irresistibly adorable, with whimsical antics and cuddly pups But the Sea Otter is also a vital"keystone" species on which their ecosystem depends for health and survival.
Sea Otters
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Author : Isabelle Groc
language : en
Publisher: Orca Book Publishers
Release Date : 2020-04-07
Sea Otters written by Isabelle Groc and has been published by Orca Book Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-07 with Juvenile Nonfiction categories.
Sea otters once ruled the Pacific Ocean, but the fur trade of the eighteenth and nineteenth centuries brought this predator to near extinction. Today they’re slowly coming back from the brink, and scientists are learning more about their pivotal role as one of nature’s keystone species. This book looks at the history, biology, behavior and uncertain future of sea otters. Author and photojournalist Isabelle Groc takes us into the field: watching sea otter rafts off the British Columbia coast from a kayak, exploring what makes their fur coats so special, understanding how their voracious appetites are helping kelp forests thrive and, ultimately, learning how sea otters are leaving their mark (or paws) on every part of the ecosystem. They might be one of the most adorable creatures in the ocean, but kids will discover how their survival is key to a rich, complex and connected ecosystem.