Land bridges : ancient environments, plant migrations, and new world connections / / Alan Graham

• Autore: Graham Alan
• Pubblicazione: Chicago : , : University of Chicago Press, , [2018]; ©2018
• Descrizione fisica: 1 online resource : illustrations (black and white), maps (black and white)
• Disciplina: 551.41
• Soggetto topico: Natural bridges - Western Hemisphere; Landforms - Western Hemisphere; Biogeography - Western Hemisphere; Plant diversity - Western Hemisphere
• Soggetto non controllato: Antillean; Bering; Cenozoic; Central American; Cretaceous; Magellan; New World; North Atlantic; climate; land bridges
• Note generali: Previously issued in print: 2018.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Frontmatter -- CONTENTS -- ABBREVIATIONS, TIME SCALE, AND CONVERSIONS -- PREFACE -- Introduction -- PART ONE. Boreal Land Bridges -- PART TWO. Equatorial Land Bridges -- PART THREE. Austral Land Bridge -- ACKNOWLEDGMENTS -- Index
• Sommario/riassunto: Land bridges are the causeways of biodiversity. When they form, organisms are introduced into a new patchwork of species and habitats, forever altering the ecosystems into which they flow; and when land bridges disappear or fracture, organisms are separated into reproductively isolated populations that can evolve independently. More than this, land bridges play a role in determining global climates through changes to moisture and heat transport and are also essential factors in the development of biogeographic patterns across geographically remote regions. In this book, paleobotanist Alan Graham traces the formation and disruption of key New World land bridges and describes the biotic, climatic, and biogeographic ramifications of these land masses' changing formations over time. Looking at five land bridges, he explores their present geographic setting and climate, modern vegetation, indigenous peoples (with special attention to their impact on past and present vegetation), and geologic history. From the great Panamanian isthmus to the boreal connections across the North Atlantic and North Pacific Oceans that allowed exchange of organisms between North America, Europe, and Asia, Graham's sweeping, one-hundred-million-year history offers new insight into the forces that shaped the life and land of the New World.
• Titolo autorizzato: Land bridges
• ISBN: 0-226-54432-X
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910838350203321
• Lo trovi qui: Univ. Federico II