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<br />39 <br /> <br />A series of distribution maps for rare fish found in the upper Colorado River basin based <br />upon a survey of the literature. Maps are provided for Colorado cutthroat trout, bony tail <br />chub, Colorado squawfish, humpback chub, humpback sucker, and the Kendall Warm Springs <br />dace in Colorado, New Mexico, Utah, and Wyoming. <br /> <br />226. Eddy, R. M. 1975. The effect of point source discharges on the diversity of benthic <br />invertebrates of the Yampa River, Steamboat Springs to Hayden, Colorado - September, <br />1975. U. S. Environ. Protect. Agency, Denver, Colo. SA/TIB-30. 43 pp. <br /> <br />INVERTEBRATE, RlVER-Yampa, WATER QUALITY <br /> <br />Macroinvertebrates were sampled at 17 locations (3 samples each) along a 6l-km reach of <br />the Yampa River with modified Surber samplers in September 1975 to determine the impact <br />of known point-source discharges on these organisms. <br /> <br />227. Eddy, S. 1957. How to know the freshwater fishes. Wm. C. Brown Co., Dubuque, Iowa. <br />253 pp. <br /> <br />DESCRIPTION, DISTRIBUTION, FISH, KEYS <br /> <br />Comprehensive list of the freshwater fish of the United States with a key to their <br />identification. <br /> <br />228. Edmondson, C. H. <br />Stud. Ser. <br /> <br />1912. <br />A, 9: <br /> <br />Protozoa of high mountain lakes in Colorado. <br />65-74. <br /> <br />Univ. Colo. <br /> <br />DISTRIBUTION, INVERTEBRATE <br /> <br />Lists species of aquatic Protozoa for a number of mountain lakes between 8,875 and 12,740 <br />feet in elevation. <br /> <br />229. Edmunds, G. F., Jr., R. K. Allen, and W. L. Peters. 1963. An annotated key to the nymphs <br />of the families and subfamilies of mayflies (Ephemeroptera). Univ. Utah (Salt Lake <br />City) BioI. Ser. 13(1): 1-56. <br /> <br />INSECT, KEYS <br /> <br />Keys for nymphs of mayflies in Utah. This series also contains the following papers: <br />G. F. Edmunds, and G. G. Musser, "The mayfly fauna of Green River in the Flaming Gorge <br />Reservoir Basin, Wyoming and Utah," pp. 112-123; R. J. Musser, "Dragonflies (Odonata: <br />Anisertera) from Green River in the Flaming Gorge Reservoir Basin, Wyoming and Utah," pp. <br />126-132; and J. Sessions and A. R. Gaufin, "Stoneflies (Plecoptera) from Green River in <br />the Flaming Gorge Reservoir Basin, Wyoming and Utah," pp. 134-137. <br /> <br />230. Ehrenfeld, D. W. 1976. The conservation of non-resources. Am. Sci. 64: 648-656. <br /> <br />ECOLOGY, ECONOMICS, PLAN, WILDLIFE <br /> <br />Discussion of the rationale for the preservation of endangered species. Economic and <br />even ecological justifications for the preservation of endangered species may weaken the <br />conservation position in unpredictable ways. Non-resource reasons are ultimately more <br />significant. <br /> <br />231. Eiserman, F., editor. 1958. A fisheries survey of the Little Snake River drainage. <br />Wyoming Game Fish Dep., Cheyenne. Fish Tech. Rep. 6. 35 pp + appendix. <br /> <br />ABUNDANCE, DISTRIBUTION, FISH, FISH-rare, FISHERY, HABITAT, MANAGEMENT, RIVER-Little <br />Snake, WATER QUALITY <br />