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August and October 1979 and January and April 1980. Spring samples for Oak Creek <br />were taken in June 1980. The samples were preserved in the field with 75% ethanol <br />~~ and returned to the lab where the organisms were sorted from the debris, identified <br />and counted. Statistical analysis of the benthic dato for both creeks was run on the <br />transformed (Io910) data to allow use of parametric tests (Elliott 1977). Tests used <br />were analysis of variance, which test differences between stations, trend analysis, <br />which analyses trends observed and the Scheffe test statistic, which allows testing <br />of one site against the other three or two against two. Species diversity was <br />calculoted using the Shannon-Weover formula as recommended by (Weber 1973). <br />The periphyton of Trout Creek were collected in August and October 1979 and <br />January and April 1980 by scraping submerged substrate surfaces. Material collected <br />was preserved with 10% formalin. In the lab, I ml samples were placed in a counting <br />cell to determine relative abundance of The species present. <br />• <br /> <br />2.7-74 <br />