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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 /> [n, species not found in sample; A, abundance as cells per square centimeter; B, biovolume as cubic micrometers per square centimeter; densities and biovolumes rounded to 3 significant
<br /> figures;
<br /> p, micrometer; <, less than; Site abbreviations are used in this table. See table I for full site names]
<br /> Ridgway Ridgway Gore Gore East East
<br /> 8/96 8/97 8/96 8/97 8/96 8/97
<br /> A B A B A B A B A B A B
<br /> DIVISION
<br /> Family
<br /> Genus species variety
<br /> CHLOROPHYTA (green algae)
<br /> Chaetophoraceae
<br /> Stigeoclonium lubricum 3,800 49,700,000 261 3,420,000
<br /> Cladophoraceae
<br /> Cladophora glomerata
<br /> Cladophora sp.
<br /> Desmidiaceae
<br /> Closterium moniliferum
<br /> C osmarium formosulum 1,980 41,200,000
<br /> Staurastrum sp. 285 4,280,000
<br /> Microsporaceae
<br /> Microspora sp.
<br /> Oedogoniaceae
<br /> Oedogonium sp.
<br /> Oocystaceae
<br /> Ankistrodesmus falcatus 571 7,650
<br /> Scenedesmaceae
<br /> Scenedesmus dimorphus
<br /> Scenedesmus quadricauda
<br />...... Ulvaceae
<br />-..J Schizomeris leibleinii 7,940 35,100,000 3,380 14,900,000 120,000 531,000,000 2,280 10,100,000
<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 672 117,000 1,910 331,000 2,610 452,000 354 61,500
<br /> Achnanthes bioreti
<br /> Achnanthes lanceolata 193 24,800
<br /> Achnanthes lanceolata dubia
<br /> Achnanthes lapponica ninckei 2,870 151,000
<br /> Achnanthes minutissima 26,600 2,010,000 18,800 877,000 31,100 2,360,000 126,000 5,890,000 38,200 2,890,000 9,080 424,000
<br /> Achnanthes minutissima (I ANS WRC)
<br /> Achnanthes petersonii
<br /> Achnanthes pinnata
<br /> Achnanthes pusilla
<br /> Cocconeis pediculus
<br /> Cocconeis placentula
<br /> Cocconeis placentula euglypta 1,170 334,000 672 192,000 97 27,500 136 38,800
<br /> Cocconeis placentula lineata 278 157,000 448 110,000 955 540,000 109 61,600
<br /> Diatomaceae
<br /> Asterionella formosa
<br />
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