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This book offers a broad perspective on marine mammal species and populations considered to be most at risk due to human activities. It emphasizes the importance of understanding the essential biology and ecology of marine mammals to assess the correlates and causes of extinction and to implement science-based conservation. Chapters address such topics as different types of marine mammals and their importance to the ecosystem of the world's oceans and food cycles, lactation in marine mammals, dolphin survival rates and causes of movement reduction in Bangladesh, and much more.
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Aquatic mammals --- Riparian animals --- Behavior --- Ecology
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Aquatic mammals. --- Mammals --- Adaptation (Biology) --- Anatomy.
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Many mammals, such as otters, live in close association with rivers and streams, feeding in them, or using them as a place of safety or means of escape from predators. The distinct adaptations that riparian mammals have evolved in order to live in these environments also handicap them for living elsewhere. They are therefore threatened by alterations to their environment. In recent years our rivers have become highly polluted, and with bankside modifications for agriculture and forestry, enhanced or decreased water flow, and use for recreation, they become less and less suitable for these highly specialized animals. This 1998 book looks at the habitat utilization, adaptation, feeding ecology and conservation status of a range of riparian mammals, and will give insights into the problems facing these fascinating animals, and how they might be overcome.
Aquatic mammals --- Riparian animals --- Behavior --- Ecology
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Aquatic mammals --- Dolphins --- Aquatic mammals. --- Dolphins. --- Delphininae --- Delphinidae --- Aquatic animals --- Mammals --- Mammals. --- Zoology.
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"This book explores the evolution and ecology of the world's 120+ species of semi-aquatic mammals. It includes illuminating photographs and original illustrations by an award-winning artist. The book covers topics such as behavior, habitat use, special evolutionary adaptations, and ecological roles"--
Mammals. --- Aquatic mammals. --- Mammifères aquatiques --- Mammifères --- Mammifères aquatiques --- Mammifères --- Aquatic mammals --- Mammals
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With coverage on all the marine mammals of the world, authors Jefferson, Webber, and Pitman have created a user-friendly guide to identify marine mammals alive in nature (at sea or on the beach), dead specimens "in hand?, and also to identify marine mammals based on features of the skull. This handy guide provides marine biologists and interested lay people with detailed descriptions of diagnostic features, illustrations of external appearance, beautiful photographs, dichotomous keys, and more. Full color illustrations and vivid photographs of every living marine mammal species are incorporate
Marine mammals. --- Marine mammals --- Aquatic mammals --- Marine animals
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This new edition of Marine Mammals of the World describes and illustrates newly discovered and rarely photographed species, making it the most comprehensive and up-to-date identification guide available. This edition continues to meet the research-focused needs of marine biologists and conservation biologists by providing a tremendous influx of new photos, taking advantage of advances in digital and auto-focusing photography, and the emergence of marine mammal studies and "whalewatching" around the world. The book encompasses cetacean, pinniped, and sirenian species, as well as extinct species, and describes basic biology and taxonomic groupings of marine mammals. -- Provided by publisher
Marine mammals. --- Marine mammals --- Aquatic mammals --- Marine animals
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This book covers the ecology, behavior, conservation, evolution, form and function of whales, dolphins, seals, sea lions, manatees, dugongs, otters and polar bears, and provides new content on anthropogenic concerns, emerging threats such as ocean noise, and impacts of climate change.
Marine mammals --- Aquatic mammals --- Marine animals --- Marine mammals - Encyclopedias
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