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Last modified
7/14/2009 5:01:47 PM
Creation date
5/22/2009 6:27:11 PM
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UCREFRP
UCREFRP Catalog Number
9481
Author
Mueller, G., G. Bryant and T. Burke
Title
Changes in Fish Communities Following Concrete Lining of the Coachella Canal, Southeastern California
USFW Year
1989
USFW - Doc Type
Journal of the Arizona-Nevada Academy of Science
Copyright Material
YES
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<br />JOURNAL OF T[~ ARIZONA-NEVADA ACADEMY OF SCIENCE <br />VOL. 23 <br />Table 4. Fish Diversity, Density, and Biomass Comparisons for Lined Versus Unlined Sections of the Coachella <br />Canal, California, November 1980 and 1984. <br />Study (Unlined Canal) Species Diversity fish/m2 grams/m2 <br />Minckley et al. 1983 <br />Beaty 1981 <br />Beaty 1984 <br />Average <br />16/6/-62.5%* 0.2291.0$3/-83-8%-63.8 49.369/4.369/-92.2% <br />8/6/-25.0% 0.147/.08°11-73.5%-¢3 12.035/4.367/-63.7% <br />7/6/-14.3% 0.034/.089)+8.9% ~ ~~ 6.245/4.367/-30.1% <br />10/6/-40.0% 0.137/.Ofl9/-73.3% "sg~ `f 22.550/4.367/-80.6% <br />*UnlinedlLined (Table 3) /Percentage Change <br />As lining activities accelerate, cumulative impacts will <br />be to increase water velocities, resulting in increased <br />downstream drift of fishes and reduced protective <br />cover needed for spawning and rearing habitat. <br />Recruitment to populations in lined canals may depend <br />on downstream migration of fishes from upstream <br />sources. <br />ACKNOWLEDGEMENTS <br />We thank biologists from the Coachella Valley <br />Water District, Fish and Wildlife Service, California <br />Department of Fish and Game, and Imperial Irrigation <br />District for their assistance. Special gratitude goes to <br />Drs. Paul Beaty and Richard Thiery for coordinating <br />the water outage and to Mrs. Gretchen Wilborn for <br />typing and editing this manuscript. <br />LITERATURE CITED <br />BEATY, P.R., R.K. FULLER, E.M. HALLERMAN, <br />R.G. THIERY, and S.J. REGER. 1981. Environ- <br />mental Impact of Hybrid Combination (grass carp <br />X bighead carp) in two California irrigation sys- <br />tems. 1980 progress report; physiochemical and <br />faunal baseline investigations. Aquatic Research <br />Group, Coachella Valley Water District, California. <br />BEATY, P.R. 1984. Preliminary field notes and fishery <br />data compiled during November 1984 dewatering <br />of the Coachella Canal. Coachella Valley Water <br />District, California. <br />BUREAU OF RECLAMATION, U.S. DEPARTMENT <br />OF THE INTERIOR. 1984. Special Report-Water <br />Conservation Opportunities Imperial Irrigation <br />District, California. Lower Colorado Region, <br />Boulder City, Nevada. <br />MINCKLEY, W.L., W. RINNE, and G. MUELLER. <br />1983. Fishery inventory of the Coachella Canal, <br />Southeastern California. Journal of the Arizona- <br />Nevada Academy of Science 18:39-45. <br />
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