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Cheatgrass

Author: James Albert Young
Publisher: University of Nevada Press
ISBN: 9780874177657
Size: 70.60 MB
Format: PDF, ePub
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Cheatgrass is the first comprehensive study of this highly invasive plant that has changed the ecology of millions of acres of western rangeland. Authors Young and Clements have researched the biology and impact of cheatgrass for four decades. Their work addresses the subject from several perspectives: The history of the invasion; the origins and biology of cheatgrass, including the traits that allow it to adapt so successfully to a wide range of soil and precipitation conditions; its genetic variations, breeding system, and patterns of distribution; its impact on grazing management; and the role it plays, both positive and negative, in the lives of high desert wildlife. The authors also describe efforts to control cheatgrass and offer some new approaches that have the potential to halt its further expansion.

Fifty Years Of Invasion Ecology

Author: David M. Richardson
Publisher: John Wiley & Sons
ISBN: 1444330004
Size: 63.22 MB
Format: PDF, Kindle
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Invasion ecology is the study of the causes and consequences of the introduction of organisms to areas outside their native range. Interest in this field has exploded in the past few decades. Explaining why and how organisms are moved around the world, how and why some become established and invade, and how best to manage invasive species in the face of global change are all crucial issues that interest biogeographers, ecologists and environmental managers in all parts of the world. This book brings together the insights of more than 50 authors to examine the origins, foundations, current dimensions and potential trajectories of invasion ecology. It revisits key tenets of the foundations of invasion ecology, including contributions of pioneering naturalists of the 19th century, including Charles Darwin and British ecologist Charles Elton, whose 1958 monograph on invasive species is widely acknowledged as having focussed scientific attention on biological invasions.