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Impact of Flooding in a Sonoran Desert Stream, including Elimination of an Endangered Fish Population (Poeciliopsis o. occidentalis, Poeciliidae)
James P. Collins, Craig Young, Judd Howell and W. L. Minckley
The Southwestern Naturalist
Vol. 26, No. 4 (Nov. 20, 1981), pp. 415-423
Published by: Southwestern Association of Naturalists
Stable URL: http://www.jstor.org/stable/3671085
Page Count: 9
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Tule Creek is an intermittent stream draining Sonoran desertscrub in Yavapai Co., Arizona. An 800-m segment has perennial surface discharge and was the site of a ciénaga community dominated by Scirpus olneyi and Anemopsis californica. Extensive flooding in winter 1978 had the following immediate impacts on the system: 1) an introduced population of the endangered Sonoran topminnow (Poeciliopsis o. occidentalis) was destroyed, 2) substrate erosion and entrainment removed vegetation, reduced number of pools, straightened and deepened the channel; and 3) canyon treefrog (Hyla arenicolor) and saltcedar (Tamarix chinensis) were introduced.
The Southwestern Naturalist © 1981 Southwestern Association of Naturalists