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<br />• <br /> <br />TABLE II .G-7: Mean periphyton biomass at three stations on <br />the White River, ~uly and September, 1979, <br />expressed as ug/m of chlorophyll a (N = 3) <br />July September <br />Station a S.D. x S. D. <br />Upper 98.6 133.6 161.0 22.8 <br />Middle 25.7 15.3 188.5 27.9 <br />Lower 24.3 15.0 109.8 49.1 <br />TABLE II .G-8: Taxa composing the periphyton communitq in the <br />White River, 1979. <br />Cyanophyte <br />Anabena sp. <br />Cleotrichia sp. <br />Oscillatoria sp. <br />Chlorophyta <br />Cladophora spp. <br />Rivularia sp. <br />Chrysophyta <br />Achnanthes linearis <br />Anomoeneie sp. <br />Caloneis sp. <br />Cocconeis placentula <br />Cocconeis pediculus <br />Cyclotella sp. <br />Cymatopleura sp. <br />Cymbella spp. <br />oma vulzare var. mesodon <br />sorea <br />a crotonensis <br />Chrysophyta (continued) <br />Fragillaria sp. <br />Gomphonema ap. <br />Gyrosigma sp. <br />Melosira varians <br />Meridion circulare <br />Navicula sp. 1 <br />Navicula sp. 2 <br />Navicula sp. 3 <br />Navicula tripunctata <br />Nitzschia acicularis <br />Nitzschia sigmoidea <br />Nitzschia sp. <br />Pinnularia sp. <br />Rhizolenia sp. <br />Rhoicosphenia curvata <br />Rhopalodia gibba <br />Surirella spp. <br />Synedra ulna <br />S edra sp. <br />II.G-23 <br />