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Show Because the bulk of the data regarding algal populations is incomplete and superficial, it will be difficult to properly use these organisms as environmental indicators. d. Without the Unit Without knowing the specific plans for the potential development of the Unit area, it is only possible to discuss possible changes in general terms. However, if the proposed Bonneville Unit is not completed, the present trend of land development can reasonably be expected to continue but in some cases at a slower rate. Areas designated to receive full service irrigation under the Bonneville Unit would probably change very slowly without the Unit development. A greater awareness, by man, of the importance of preserving native conditions and controlling development of natural resources will probably retard the speed with which the vegetative changes occur in some areas. Locations suitable for urban, agricultural, and recreational developments can be expected to be subjected to significant alterations of land cover. Fish a. General Utah presently contains 49 species of fish, representing 10 families and 30 genera including 23 species that have successfully been introduced. ° A preliminary survey" of the fishes inhabiting the area encompassed by the Bonneville Unit was carried out by Brigham Young University., The survey indicated the presence of 36 species of fish representing 10 families and 23 genera. A checklist is included as Attachment C. This investigation indicated the presence of the golden shiner ( Notemigonus crysoleucas) in Utah Lake and a hybrid of the Yellowstone cutthroat trout and the Utah cutthroat trout in the Diamond Fork streams. These fish were not included in the checklist of Sigler and Miller. 68 The fish fauna of Utah and of the southwestern states in general have undergone drastic changes since settlement in the 1880' s. The following list indicates those species in Utah currently considered to be rare and/ or endangered. 23, 74 Arctic grayling Rare Humpback chub Rare and Endangered Colorado River squawfish Rare and Endangered Woundfin Rare and Endangered 130 |