An essential book for all bird and wildlife buffs visiting the Grand Canyon. —Wildlife Book Review "Will benefit all amateur naturalists because of its survey of the life zone patterns in [the] southwestern United States." —Science Books &amp; Films "The subtitle accurately reflects the contents of this excellent book on the birds of a unique natural wonder and national treasure. . . . An annotated checklist discusses the status and abundance of each of the over 300 species of birds known to have occurred in the Grand Canyon region, which is defined here as the river between Glen Canyon Dam and Lake Mead and the contiguous plateaus to the north and south." —Journal of Arizona History

Grand Canyon Birds: Historical Notes, Natural History and Ecology

History

Johnson, R. Roy

Carothers, Steven W.

Brown, Bryan T.

Americas

University of Arizona Press

In prehistoric times, the Santa Cruz River in what is now southern Arizona saw many ebbs, flows, and floods. It flowed on the surface, meandered across the floodplain, and occasionally carved deep channels or arroyos into valley fill. Groundwater was never far from the surface, in places outcropping to feed marshlands or ciénegas. In these wet places, arroyos would heal quickly as the river channel revegetated, the thriving vegetation trapped sediment, and the channel refilled. As readers of Requiem for the Santa Cruz learn, these aridland geomorphic processes also took place in the valley as Tucson grew from mud-walled village to modern metropolis, with one exception: historical water development and channel changes proceeded hand in glove, each taking turns reacting to the other, eventually lowering the water table and killing a unique habitat that can no longer recover or be restored. Authored by an esteemed group of scientists, Requiem for the Santa Cruz thoroughly documents this river—the premier example of historic arroyo cutting during the late nineteenth and early twentieth centuries, when large floodflows cut down through unconsolidated valley fill to form deep channels in the major valleys of the American Southwest. Each chapter provides a unique opportunity to chronicle the arroyo legacy, evaluate its causes, and consider its aftermath. Using more than a collective century of observations and collections, the authors reconstruct the circumstances of the river’s entrenchment and the groundwater mining that ultimately killed the marshlands, a veritable mesquite forest, and a birdwatcher's paradise. Today, communities everywhere face this conundrum: do we manage ephemeral rivers through urban areas for flood control, or do we attempt to restore them to some previous state of perennial naturalness? Requiem for the Santa Cruz carefully explores the legacies of channel change, groundwater depletion, flood control, and nascent attempts at river restoration to give a long-term perspective on management of rivers in arid lands. Tied together by authors who have committed their life’s work to the study of aridland rivers, this book offers a touching and scientifically grounded requiem for the Santa Cruz and every southwestern river.

Requiem for the Santa Cruz: An Environmental History of an Arizona River

Webb, Robert H.

Turner, Raymond M.

Betancourt, Julio L.

The Petrified Forest Through the Ages: 75th Anniversary Symposium (Bulletin Series 54)

Science & Math

Colbert, Edwin Harris

Biological Sciences

Museum of Northern Arizona

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Books by Johnson, R. Roy