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~ ~~ 1 <br />TADLE 3 <br />DENSITIES (N0./FTZ) AND PERCENT RELATIVE ADUNDANCES (x RA) OF DENTIIIC MACROINVERTEBRATES ~, <br />COLLECTED BY SURBER SAMPLER AT STATION 1 1N THE WILLIAMS FORK RIVER, <br />NEAR CRAIG, COLORADO, NOVEMBER 5, 1980 <br />Taxa Rep. 1 Rep. 2 Rep. 3 Rep. 4 Mean ~ RA S. D.~ <br />Oligochaeta <br />Naididae <br />Ephemeroptera <br />Baetidae <br />Baetis sp. <br />Ephemerellidae <br />Ephemerella sp. <br />Heptageniidae. <br />~, Rithrogena sp. <br />4' Tricorythidae <br />Tricorythodes ap. <br />Odonata <br />Gomphidae <br />Ophiogomphus sp. <br />Plecoptera <br />Perlidae <br />Claassenia sp. <br />Perlodidae <br />Isoperla sp. <br />Trichoptera <br />Brachycentridae <br />Brachycentrus sp. <br />Gloasosomatidae <br />Culoptila ep. <br />Ilelicopsychidae <br />Ilelicopsyche sp. <br />`../ <br />16 <br />5 <br />3 <br />1 <br />9 <br />3 <br />13 <br />7 <br />1 <br />5 <br />2 <br />1 <br />1 <br />2 <br />70 <br />4 <br />3 <br />2 <br />8 <br />16 <br />3 <br />1 <br /> 0.2 0.1 0.5 , <br />1 0.8 0.4 0.9 <br />14 28.2 14.9 27.9 <br />4 5.0 2.6 1.4 <br />1 1.3 0.7 1.2 <br /> 0.5 0.3 1.0 <br />1 0.2 0.] 0.5 <br />3 4.7 2.5 2.4 <br />6 6.3 3.3 6.8 <br />14 6.7 3.5 5.9 <br />]0 3.5 1.8 4.5 <br /> <br />