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Return to the Sea: The Life and Evolutionary Times of Marine Mammals
Annalisa Berta, James L. Sumich, Carl Buell你有多喜歡這本書?
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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.
年:
2012
版本:
1
出版商:
University of California Press
語言:
english
頁數:
224
ISBN 10:
0520270576
ISBN 13:
9780520270572
文件:
PDF, 6.01 MB
你的標籤:
IPFS:
CID , CID Blake2b
english, 2012
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