Return to the Sea

The Life and Evolutionary Times of Marine Mammals

AvAnnalisa Berta

Häftad, Engelska, 2020

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Beskrivning

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 nonspecialist. Against a backdrop of geologic time and changing climates and geography, this volume takes evolution as its unifying principle to help us to understand today’s diversity of marine mammals and their responses to environmental challenges. Annalisa Berta explains current controversies and explores patterns of change now taking place, such as shifting food webs and predator-prey relationships, habitat degradation, global warming, and the effects of humans on marine-mammal communities.

Produktinformation

Utgivningsdatum:2020-03-31
Mått:152 x 229 x 12 mm
Vikt:304 g
Format:Häftad
Språk:Engelska
Antal sidor:224
Förlag:University of California Press
Illustratör:James L. Sumich, Carl Buell
ISBN:9780520355521

Utforska kategorier

Geovetenskap inom Naturvetenskap och teknik
Däggdjur inom Naturvetenskap och teknik
Däggdjur inom Djur och Natur

Mer om författaren

Annalisa Berta is Professor Emerita in the Department of Biology at San Diego State University. She has served as the President of the Society of Vertebrate Paleontology, and as Associate Editor of the scientific journal Marine Mammal Science.

Recensioner i media

“Wide-ranging and fact-packed. . . .Berta writes in an engaging, jargon-free style, which makes the book readily accessible to students and teachers at both the graduate and the undergraduate levels. . . . As useful as it is stimulating.”

Innehållsförteckning

PrefaceAcknowledgments1. Marine MammalsMajor Groups of Marine MammalsDiscovering, Naming, and Classifying Marine MammalsReconstructing the Hierarchy of Marine MammalsAdaptations and ExaptationsWhat Is a Species and How Do New Species Form?Where Do They Live and Why Are They Where They Are?2. Past Diversity in Time and Space,Paleoclimates, and PaleoecologyFossils and TaphonomyThe Discovery of the First Fossil Marine Mammal (a Whale)The Importance of FossilsHow Do We Know the Age of a Fossil?How Do We Know Where Marine Mammals Were?Marine Mammal Diversity and Communities Through TimeWhat Led Marine Mammals Back to the Sea?3. Pinniped Diversity, Evolution, and AdaptationsThe Earliest Pinnipeds: Webbed Feet or Flippers?Crown PinnipedsDesmatophocids: Extinct Phocid RelativesEvolutionary TrendsStructural and Functional Innovations and AdaptationsMating and Social Systems, Reproduction, and Life History4. Cetartiodactylan Diversity, Evolution, and AdaptationsEarly Whales Had Legs!Crown Cetacea (Neoceti)Evolutionary TrendsStructural and Functional Innovations and AdaptationsMating and Social Systems, Reproduction, and Life History5. Diversity, Evolution, and Adaptations of Sireniansand Other Marine MammalsWalking Sea Cows!Crown SireniaEvolutionary TrendsStructural and Functional Innovations and AdaptationsMating and Social Systems, Reproduction and Life HistoryDesmostyliansAquatic SlothsMarine OttersPolar Bears6. Ecology and ConservationWhat Marine Mammals Eat and What Eats ThemInteractions Between Human and Marine Mammals:Lessons LearnedExtinction: The Rule, Not the ExceptionGlossaryFurther Reading and Online SourcesIllustration CreditsIndex