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Author: D. Renouf
Publisher: Springer Science & Business Media
ISBN: 9401131007
Category : Science
Languages : en
Pages : 424
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Book Description
We teach our students of behavioural science that one first defines a research problem, and then the most appropriate animal is selected to investigate hypotheses. The reverse order of events is improper: a particular class of animals should not be studied for its own sake. In the case of the Pinnipeds (seals, sea lions, fur seals and walruses) the organism and the problem are essentially the same. The research questions presented in this volume in one way or another relate to survival in two worlds, the ocean for foraging, and the terrain at its edge or frozen above it for breeding. The evolution of Pinniped behaviour and the mechanisms which underlie it are a consequence of having to cope with two seemingly incompatible sets of environmental constraints. The physiological adaptations for concomitant functioning in two media with very different physical characteristics have produced correlated behav ioural modifications. The energetic demands of reproduction and foraging are idiosyncratic because each activity occurs on opposite sides of the air/water interface. As a result, the mating system must reconcile aquatic design for such functions as locomotion and thermoregulation, with the terrestrial requirements for successful pupping. Similarly, the ecology of this dual habitat prescribes the rules governing the behaviour of the neonate and its interactions with its mother.
Author: D. Renouf
Publisher: Springer Science & Business Media
ISBN: 9401131007
Category : Science
Languages : en
Pages : 424
Get Book Here
Book Description
We teach our students of behavioural science that one first defines a research problem, and then the most appropriate animal is selected to investigate hypotheses. The reverse order of events is improper: a particular class of animals should not be studied for its own sake. In the case of the Pinnipeds (seals, sea lions, fur seals and walruses) the organism and the problem are essentially the same. The research questions presented in this volume in one way or another relate to survival in two worlds, the ocean for foraging, and the terrain at its edge or frozen above it for breeding. The evolution of Pinniped behaviour and the mechanisms which underlie it are a consequence of having to cope with two seemingly incompatible sets of environmental constraints. The physiological adaptations for concomitant functioning in two media with very different physical characteristics have produced correlated behav ioural modifications. The energetic demands of reproduction and foraging are idiosyncratic because each activity occurs on opposite sides of the air/water interface. As a result, the mating system must reconcile aquatic design for such functions as locomotion and thermoregulation, with the terrestrial requirements for successful pupping. Similarly, the ecology of this dual habitat prescribes the rules governing the behaviour of the neonate and its interactions with its mother.
Author: Juan J. Alava
Publisher: CRC Press
ISBN: 1351647636
Category : Nature
Languages : en
Pages : 285
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Book Description
Pinnipeds are a fascinating group of marine mammals that play a crucial role as apex predators and sentinels of the functioning and health of marine ecosystems. They are found in the most extreme environments from the Polar regions to the tropics. Pinnipeds are comprised of about 34 species, and of those at least 25% live permanently in tropical zones. This book reviews and updates current research on the biology, marine ecology, bio-monitoring, and conservation of tropical pinniped populations, including their behavior, anthropogenic stressors, and health. It also looks at challenges to be faced for the conservation of tropical pinnipeds, many of which are threatened species.
Author: Andy Butterworth
Publisher: Springer
ISBN: 3319469940
Category : Science
Languages : en
Pages : 625
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Book Description
Marine mammals attract human interest – sometimes this interest is benign or positive – whale watching, conservation programmes for whales, seals, otters, and efforts to clear beaches of marine debris are seen as proactive steps to support these animals. However, there are many forces operating to affect adversely the lives of whales, seals, manatees, otters and polar bears – and this book explores how the welfare of marine mammals has been affected and how they have adapted, moved, responded and sometimes suffered as a result of the changing marine and human world around them. Marine mammal welfare addresses the welfare effects of marine debris, of human traffic in the oceans, of noise, of hunting, of whale watching and tourism, and of some of the less obvious impacts on marine mammals – on their social structures, on their behaviours and migration, and also of the effects on captivity for animals kept in zoos and aquaria. There is much to think and talk about – how marine mammals respond in a world dramatically influenced by man, how are their social structures affected and how is their welfare impacted?
Author: Fritz Trillmich
Publisher: Springer Science & Business Media
ISBN: 3642763987
Category : Science
Languages : en
Pages : 299
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Book Description
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: Annalisa Berta
Publisher: Elsevier
ISBN: 0080489346
Category : Science
Languages : en
Pages : 575
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Book Description
Berta and Sumich have succeeded yet again in creating superior marine reading! This book is a succinct yet comprehensive text devoted to the systematics, evolution, morphology, ecology, physiology, and behavior of marine mammals. The first edition, considered the leading text in the field, is required reading for all marine biologists concerned with marine mammals. Revisions include updates of citations, expansion of nearly every chapter and full color photographs. This title continues the tradition by fully expanding and updating nearly all chapters. - Comprehensive, up-to-date coverage of the biology of all marine mammals - Provides a phylogenetic framework that integrates phylogeny with behavior and ecology - Features chapter summaries, further readings, an appendix, glossary and an extensive bibliography - Exciting new color photographs and additional distribution maps
Author: John P. Croxall
Publisher:
ISBN:
Category : Northern fur seal
Languages : en
Pages : 224
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Book Description
14 species summaries, 12 contributed papers and 5 rapporteurs' reports on fur seals throughout the world including the Pribilof Islands and Antarctica.
Author: G.-R. Walther
Publisher: Springer Science & Business Media
ISBN: 1441986928
Category : Science
Languages : en
Pages : 346
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Book Description
In recent years an increasing number of studies have been published reporting observations of adapted behaviour and shifting species ranges of plant and animal species due to recent climate warming. Are these `fingerprints' of climate change? An international conference was organised to bring together scientists from different continents with different expertise but sharing the same issue of climate change impact studies. Ecologists, zoologists, and botanists exchanged and discussed the findings from their individual field of research. The present book is an international collection of biological signs of recent climate warming, neither based only on computer models nor on prediction for the future, but mainly on actually occurring changes in the biosphere such as adapted behaviour or shifts in the ranges of species. `Fingerprints' of Climate Change presents ecological evidence that organisms are responding to recent global warming. The observed changes may foreshadow the types of impacts likely to become more frequent and widespread with continued warming.
Author: Ralph C. Baker
Publisher:
ISBN:
Category : Northern fur seal
Languages : en
Pages : 28
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Book Description
Booklet describing early history of fur sealing; the distribution and movement of northern fur seals; Callorhinus Ursinus, their food, physical characteristics, reproduction and mortality and disease, management and research; sealing on the Pribilof Islands and processing and sale of fur seal skins.
Author: Annalisa Berta
Publisher: Academic Press
ISBN: 0123972574
Category : Science
Languages : en
Pages : 739
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Book Description
Marine Mammals: Evolutionary Biology, Third Edition is a succinct, yet comprehensive text devoted to the systematics, evolution, morphology, ecology, physiology, and behavior of marine mammals. Earlier editions of this valuable work are considered required reading for all marine biologists concerned with marine mammals, and this text continues that tradition of excellence with updated citations and an expansion of nearly every chapter that includes full color photographs and distribution maps. - Comprehensive, up-to-date coverage of the biology of all marine mammals - Provides a phylogenetic framework that integrates phylogeny with behavior and ecology - Features chapter summaries, further readings, an appendix, glossary and an extensive bibliography - Exciting new color photographs and additional distribution maps
Author: Bernd Würsig
Publisher: Academic Press
ISBN: 0128043814
Category : Science
Languages : en
Pages : 1195
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Book Description
The Encyclopedia of Marine Mammals, Third Edition covers the ecology, behavior, conservation, evolution, form and function of whales, dolphins, seals, sea lions, manatees, dugongs, otters and polar bears. This edition provides new content on anthropogenic concerns, latest information on emerging threats such as ocean noise, and impacts of climate change. With authors and editors who are world experts, this new edition is a critical resource for all who are interested in marine mammals, especially upper level undergraduate and graduate students, researchers, and managers, and is a top reference for those in related fields, from oceanographers to environmental scientists. - Significant content and topic updates, as well as the addition of new topics in such areas as anthropogenic disturbance - Visual maps of the oceans and seas mentioned in contributions, helping to place the geographical features described in the text with clear, consistent species illustrations - Written to help users learn new information or brush up on a topic quickly, with the references at the end of each entry to help guide readers into more specialist literature
