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<br /> <br />4 <br /> <br />Table 1. Mean number of invertebrates per square foot in samples from the <br />Green River, March, 1978 (N = 4). <br /> <br /> Taylor Flats Jensen <br /> Little Hole Bridge Lodore (USGS) <br />Ephemeroptera <br />Baetis 321 .2 123.0 72.0 216.0 <br />Ephemere 11 a 4.0 152.0 <br />Rithrogena 2.0 <br />P1ecoptera <br />Isoperla 16.0 <br />Trichoptera <br />Chemumatopsyche 8.0 <br />Hydroptila 104.0 <br />Hydropsyche 110.0 <br />Rhyacophi1a 1.0 <br />Brachycentrus 6.0 <br />Diptera <br />Hexatoma 2.0 2.0 <br />Simulium 1.0 18.0 11.0 4.0 <br />Chironomidae 1943.0 1657.0 597.0 1.324 <br />Chironomid (pupae) 10.0 6.0 5.0 80.0 <br />Anthoymiidae 1.0 <br />Empididae 3.0 22.0 <br />Amphipoda <br />Gammarus 1 acus tri s 10.0 5.0 <br />Ostracoda 19.0 <br />Nematoda 30.0 8.0 <br />