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60 <br />f. Owens chub, Gila bicolor sn deri. <br />Habitat conditions remain unchanged for the Owens chub, but more life <br />history information is needed to allow for the preservation of the <br />subspecies. California Fish and Game plans to hire a graduate student <br />to conduct a life history study in its only remaining natural habitat - <br />the Owens River Gorge below Crowley Reservoir - during 1978. <br />g. Owens dace, Rhinichthyys osculus subsp. <br />The subspecies is fairly numerous and widespread in tributaries to the <br />Owens River in northern Inyo County, with no immediate threat to its <br />existence. Status apparently unchanged from last year. <br />h. Rhinichthys osculus subsp., Amargosa R. near Beatty, Nevada <br />and <br />i. Rhinichthys osculus subsp., Amargosa Gorge, below Tecopa. <br />Although no apparent differences exist between these two subspecies, Dr. <br />Deacon feels the Beatty population may be distinct and recommends that <br />further work be done here. "Gail Kobetich reported good numbers of dace <br />in the Beatty area despite heavy rains and floods in recent weeks. There <br />have been no known changes in the habitat near Tecopa, so we assume a <br />stable population there. Efforts will be made to locate a graduate <br />student interested in pursuing a study of the Amargosa River and its <br />dace populations. <br />j. Mohave chub, Gila bicolor mohavensis. <br />The primary habitat, Fort Soda, needs maintenance and weed removal. Also <br />badly needed are the installation of an aeration system and implementation <br />of the management plan agreed upon at the July 1, 1977 meeting. Hopefully, <br />BIM will provide the necessary financing and motivation for this to occur. <br />Without it, a good chance exists that the entire population will be lost <br />through inadequate oxygen as temperatures and weed growths increase. Such <br />an occurrence would virtually render the subspecies extinct. <br />k. Owens pupfish, Cyprinodon radiosus. <br />During the summer of 1977, the 200 remaining acres of privately held land <br />in Fish Slough located near the Owens Valley Native Fish Sanctuary changed <br />hands, and the new owner is anxious to begin raising alfalfa there. BIM, <br />although extremely short of help in the Bishop area office, is attempting <br />to negotiate a land exchange. To assist in this respect, Roger Samuelsen, <br />of the University of California's Natural Land and Water Reserves System, <br />has arranged with Dr. Ken Norris, of U.C. Santa Cruz, to provide student <br />assistance in performing the evaluation work which must precede the <br />exchange. Hopefully, this work will begin in the near future and the <br />landowner will respect a resolution from the Land and Water Reserves <br />Committee not to disrupt the Fish Slough ecosystem by initiating a land <br />development project. If all else fails, eminent domain procedures will <br />be implemented by the Fish and Wildlife Service. Funds are available for <br />purchase of the land.