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8 <br />Haynes and Muth (1984, 1985a, b), Rosenfeld (1986), Nesler (1986, 1987); Meyer <br />and Moretti (1987, 1988), Nesler et al. (1988), and Wick and Hawkins (1988a, b, <br />1989). <br />Life history and fish distribution data are still being collected, often in <br />association with habitat or monitoring-related studies. Many investigators for <br />Federal agencies are involved in this effort: Miller et al. (1981a, b, 1982a, b, c, d, e, <br />f, 1983a, b), Tyus et al. (1981a, b, 1982, 1984, 1985, 1987), Kaeding and <br />Zimmerman (1982, 1983), Archer (1984), Archer and Tyus (1984), Tyus and McAda <br />(1984), Archer et al. (1984, 1985a, b, 1986), Tyus (1984, 1985a, b, 1986, 1987), <br />and Tyus and Harned (1985). <br />Physical stream processes, such as sediment movement, habitat availability <br />at different flows, channel maintenance, and human impacts on water temperature, • <br />have been studied in the 1980's. Major studies of this type include Andrews (1978, <br />1980, 1986), Veenhuis and Hillier (1982), Theurer et al. (1982, 1984), Prewitt et al. <br />(1982a, b), Elliot et al. (1984), O'Brien (1984, 1987), Pucherelli (1987), Pucherelli et <br />al. (1987), Butler (1988), Andrews and Nelson (1989), Hann and Rose (1989), and <br />Purcherelli and Clark (1989). <br />Several authors have compiled overviews of past research related to the rare <br />fishes. Joseph et al. (1977), Bishop and Porcella (1980), Wydoski (1980, 1985, <br />1987), Carlson and Carlson (1982), Miller et al. (1982c, f), Stanford and Ward <br />(1986a, b, c), U.S. Fish and Wildlife Service (1987a, b), Carlson and Muth (1989), <br />and Wydoski and Hamill (1989) discuss past research within the Upper Basin. <br />