Land Bridges : Ancient Environments, Plant Migrations, and New World Connections - Alan Graham

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Land Bridges

Ancient Environments, Plant Migrations, and New World Connections

By: Alan Graham

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Paperback | 30 March 2018 | Edition Number 1

At a Glance

Paperback
288 Pages

Dimensions(cm)
2.28 x 1.57 x 0.2

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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 massesâ 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, Grahamâs sweeping, one-hundred-million-year history offers new insight into the forces that shaped the life and land of the New World.

Industry Reviews

"The main strength of the book is the amount of information presented, including the number of plant names of present and past taxa in many lo-cations, and also of references to remote old times and places (especially Siberia) discussed in text and massive supplementary materials, which may help anyone not directly interested in paleobotany and paleoecology. . . . the insight provoked by Land Bridges will also be useful for researchers. . ."-- "New Biological Books"
"Land Bridges attempts to reconstruct the broad outlines of the geological and paleobotanical history of the last hundred million years. The history of plate tectonics--how it influenced past plant migration, current composition of regional floras, and intercontinental linkages--makes this book a great pleasure to read. While reading, admiration gradually increases for how Graham is able to make a fascinating story out of such a large bulk of evidence. Few scientists have developed such an impressive, integrated picture of earth history. Spectacular."--Henry Hooghiemstra, University of Amsterdam

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