Several times in the distant past, catastrophic extinctions have swept the Earth, causing more than half of all species -- from single-celled organisms to awe-inspiring behemoths -- to suddenly vanish and be replaced by new life forms. Today the rich diversity of life on the Earth is again in grave danger -- and the cause is not a sudden cataclysmic event but rather humankind's devastation of the environment. Is life on our planet teetering on the brink of another mass extinction? In this absorbing new book, acclaimed paleontologist Peter D. Ward answers this daunting question with a resounding yes.
Elaborating on and updating Ward's previous work, The End of Evolution, Rivers in Time delves into his newest discoveries. The book presents the gripping tale of the author's investigations into the history of life and death on Earth through a series of expeditions that have brought him ever closer to the truth about mass extinctions, past and future. First describing the three previous mass extinctions -- those marking the transition from the Permian to the Triassic periods 245 million years ago, the Triassic to the Jurassic 200 million years ago, and the Cretaceous to the Tertiary 65 million years ago -- Ward assesses the present devastation in which countless species are coming to the end of their evolution at the hand of that wandering, potentially destructive force called Homo sapiens.
The book takes readers to the Philippine Sea, now eerily empty of life, where only a few decades of catching fish by using dynamite have resulted in eviscerated coral reefs -- and a dramatic reduction in the marine life the region can support. Ward travels to Canada's Queen Charlotte Islands to investigate the extinctions that mark the boundary between the Triassic and Jurassic periods. He ventures also into the Karoo desert of southern Africa, where some of Earth's earliest land life emerged from the water and stood poised to develop into mammal form, only to be obliterated during the Permian/Triassic extinction.
Rivers of Time provides reason to marvel and mourn, to fear and hope, as it bears stark witness to the urgency of the Earth's present predicament: Ward offers powerful proof that if radical measures are not taken to protect the biodiversity of this planet, much of life as we know it may not survive.
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Conservation Ecology: Brookfield, H. 2001. Exploring agrodiversity ...
Coomes, OT 2003. Brookfield, H. 2001. Exploring agrodiversity. Columbia University Press, New York, New York, USA. Conservation Ecology 7(1): 4.
www.ecologyandsociety.org/ vol7/ iss1/ art4/
Agriculture, Ecosystems & Environment : Exploring Agrodiversity ...
Exploring Agrodiversity. Harold Brookfield (Ed.), Columbia University Press, New York, 2001, 348 pp., paperback, ISBN 0-231-10233-X ...
linkinghub.elsevier.com/ retrieve/ pii/ S0167880903001300
Exploring agrodiversity: issues, cases, and methods in ...
EXPLORING AGRODIVERSITY: ISSUES, CASES, AND. METHODS IN BIODIVERSITY CONSERVATION,. H. Brook®eld. Columbia University Press, New York, 2001. ...
doi.wiley.com/ 10.1002/ ldr.465
Exploring Agrodiversity by Harold Brookfield at Questia Online Library
Book details. Exploring Agrodiversity. Exploring Agrodiversity ... Read the complete book Exploring Agrodiversity by becoming a questia.com member. ...
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Sustaining tropical agriculture : Article : Nature
BOOK REVIEWED-Exploring Agrodiversity. by Harold Brookfield ... In Exploring Agrodiversity, Harold Brookfield brings together a rich collection of evidence ...
www.nature.com/ uidfinder/ 10.1038/ 415960a
Exploring Agrodiversity. Harold Brookfield. Columbia University Press: New York. 2001. This book is made available in Adobe's Portable Document Format (PDF) ...
www.earthscape.org/ p3/ brookfield/
Exploring Agrodiversity sets the record straight: Small farmers are in fact ingenious and inventive and engage in a diverse range of land-management ...
cup.columbia.edu/ book/ 978-0-231-10232-2/ exploring-agrodiversity
Progress in Human Geography
Book Review: Exploring agrodiversity. http://phg.sagepub.com ... Exploring agrodiversity. New. York: Columbia. University Press. 368 pp. ...
phg.sagepub.com/ cgi/ reprint/ 27/ 1/ 122.pdf
Securing the Harvest: Biotechnology, Breeding and Seed Systems for ...
“In Exploring Agrodiversity, Harold Brookfield brings together a rich collection of evidence to underscore the importance of ecological diversity in the ...
www.scidev.net/ en/ book-reviews/ securing-the-harvest-biotechnology-breeding-and.html
Brookfield Harold: Exploring Agrodiversity | ISBN: 9780231102339 ...
Exploring Agrodiversity. University Presses Of California, Columbia And Princeton ... Exploring Agrodiversity. Small farmers are often viewed as engaging in ...
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