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aY <br /> <br />the Green and Colorado Rivers are planned for the spring, summer and <br />fall of 1980. <br />Disease organisms will be identified by qualified pathologists and <br />catologued by Fort Morgan. A list of pathogens will be developed for <br />each species of fish examined. Observations as to the conditon and <br />effects on individual fish will be recorded. <br />Several fish have been shipped to Fort Morgan and are being examined. <br />The first field trip is scheduled for May 26, 1980 to the Walter Walker <br />Wildlife area in the vicinity of Grand Junction, Colorado. <br />FIELD INVESTIGATION METHODS <br />The field investigations are concentrating on determining the distribution, <br />habitat and life histories of the target species in their natural habitat. <br />The study area includes the Green River from Split Mountain downstream <br />to its confluence with the Colorado River; the Colorado River from <br />Debeque, Colorado, downstream to the headwaters of Lake Powell and the <br />Gunnison River from Dominquez, Colorado downstream to its confluence <br />with the Colorado River (Figure 1). <br />Field teams were established at Vernal, Utah and Grand Junction, Colorado. <br />The Vernal station conducts studies on the Green River while the Grand <br />Junction station works on the Colorado and Gunnison Rivers. The Vernal <br />station is staffed with three permanent and four temporary personnel; <br />the Grand Junction station with two permanent and two temporaries.