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<br />
<br />Y.K. CONVERSE ET AL.
<br />
<br />These thermal constraints together with a decrease in habitat quality due to artificially high base flows
<br />and a change in food availability have probably inflicted an extreme and detrimental post-dam environ-
<br />mental change on subadult humpback chub in the Colorado River through Grand Canyon that limits
<br />their growth and survival. Yet, to date, the effect of artificially elevated base flows has not been
<br />adequately included in the evaluation of Glen Canyon Dam operations on native fish habitat in the
<br />Colorado River through Grand Canyon.
<br />
<br />ACKNOWLEDGEMENTS
<br />
<br />This research was supported by the United States Bureau of Reclamation through a contract to BiojWest,
<br />Inc. We thank the many BiojWest and Bureau of Reclamation employees who assisted in data collection,
<br />especially Bill Masslich, Leslie Brown, Peter Weiss and Bryan Cowdell. Todd Crowl, Mike O'Neill and
<br />Lou Pisacane provided constructive criticisms throughout the study. We thank Jack Schmidt for sharing
<br />ideas during early phases of the study and providing raw channel width and depth data.
<br />
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<br />(Q 1998 John Wiley & Sons, Ltd.
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<br />Regul. Rivers: Res. Mgmt. 14: 267-284 (1998)
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