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<br /> Appendix A. Taxa, densities of richest-targeted habitat periphyton, and sampling date for environmental samples at sites in the Upper Colorado River Basin study unit, 1996-97-Continued <br /> [--, species not found in sample; A, abundance as cells per square centimeter; g, biovolume as cubic micrometers per square centimeter; densities and biovolumes rounded to 3 significant <br /> figures; <br /> /1, micrometer; <, less than; Site abbreviations are used in this table. See table 1 for full site names] <br /> DryFk DryFk DryCk DryCk Reed Reed <br /> 8/96 8/97 8/96 8/97 11/96 11/97 <br /> A 8 A 8 A 8 A 8 A 8 A 8 <br /> DIVISION <br /> Family <br /> Genus species variety <br /> CHLOROPHYTA (green algae) <br /> Chaetophoraceae <br /> Stigeoclonium lubricum 5,990 78,400,000 <br /> Cladophoraceae <br /> Cladophora glomerata 999 142,000,000 <br /> Cladophora sp. <br /> Desmidiaceae <br /> Closterium moniliferum <br /> Cosmarium formosulum <br /> Staurastrum sp. <br /> Microsporaceae <br /> Microspora sp. <br /> Oedogoniaceae <br /> Oedogonium sp. 13,200 25,400,000 <br /> Oocystaceae <br /> Ankistrodesmus falcatus <br /> Scenedesmaceae <br /> Scenedesmus dimorphus <br /> Scenedesmus quadricauda <br /> Ulvaceae <br />tv Schizomeris leibleinii <br />1.0 <br /> V olvocaceae <br /> Eudorina elegans <br /> Zygnemataceae <br /> Mougeotia sp. <br /> Spirogyra sp. <br /> CHRYSOPHYT A (golden and <br /> yellow-green algae, including diatoms) <br /> Achnanthaceae <br /> Achnanthes biasolettiana <br /> Achnanthes bioreti <br /> Achnanthes lanceolata <br /> Achnanthes lanceolata dubia <br /> Achnanthes lapponica ninckei <br /> Achnanthes minutissima 26,900 2,040,000 10,900 509,000 8,840 668,000 1,550 72,500 962 72,800 845 39,500 <br /> Achnanthes minutissima (1 ANS WRC) <br /> Achnanthes petersonii <br /> Achnanthes pinnata <br /> Achnanthes pusilla <br /> Cocconeis pediculus 137 177,000 282 15,800,000 <br /> Cocconeis placentula 841 504,000 <br /> Cocconeis placentula euglypta 4,210 1,200,000 2,800 796,000 825 235,000 <br /> Cocconeis placentula lineata 289 70,800 82 46,500 1,260 309,000 1,240 702,000 137 33,600 <br /> Diatomaceae <br /> Asterionella formosa <br />