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[null,"1.","Record Nr.",null,"UNINA9910779154403321"]
[null,null,"Autore",null,"Berta Annalisa"]
[null,null,"Titolo",null,"Return to the sea [[electronic resource] ] : the life and evolutionary times of marine mammals / / Annalisa Berta ; illustrated by James L. Sumich and Carl Buell"]
[null,null,"Pubbl/distr/stampa",null,"Berkeley, California : , : University of California Press, , 2012"]
[null,null,"ISBN",null,"1-280-59330-X"]
[{"$nulls":4},"9786613623133"]
[{"$nulls":4},"0-520-95144-1"]
[null,null,"Edizione",null,"[First edition.]"]
[null,null,"Descrizione fisica",null,"1 online resource (222 pages)"]
[null,null,"Disciplina",null,"599.5/138"]
[null,null,"Soggetti",null,"Marine mammals - Evolution"]
[{"$nulls":4},"Marine animals - Evolution"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Description based upon print version of record."]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and index."]
[null,null,"Nota di contenuto",null,"Frontmatter -- Contents -- Preface -- Acknowledgments -- Chapter One. Marine Mammals -- Chapter Two. Past Diversity in Time and Space, Paleoclimates, and Paleoecology -- Chapter Three. Pinniped Diversity, Evolution, and Adaptations -- Chapter Four. Cetartiodactylan Diversity, Evolution, and Adaptations -- Chapter Five. Diversity, Evolution, and Adaptations of Sirenians and Other Marine Mammals -- Chapter Six. Ecology and Conservation -- Glossary -- Further Reading and Online Sources -- Illustration Credits -- Index"]
[null,null,null,"Sommario/riassunto","Return to the Sea portrays the life and evolutionary times of marine mammals-from giant whales and sea cows that originated 55 million years ago to the deep diving elephant seals and clam-eating walruses of modern times. This fascinating account of the origin of various marine mammal lineages, some extinct, others extant but threatened, is for the non-specialist. Set against a backdrop of geologic time, changing climates, and changing geography, evolution is the unifying principle that helps us to understand the present day diversity of marine mammals and their responses to environmental challenges. Annalisa Berta explains current controversies and explores patterns of change taking place today, such as shifting food webs and predator-prey relationships, habitat degradation, global warming, and the effects of humans on marine mammal communities."]