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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 /> --J
<br /> [--, 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 /> II, micrometer; <, less than; Site abbreviations are used in this table. See table 1 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 /> Anomoeoneis vitrea 386 35,600
<br /> Caloneis bacillum
<br /> Caloneis hyalina 278 127,000 224 103,000 1,910 875,000
<br /> Caloneis ventricosa alpina
<br /> Cymbella affinis 3,820 2,400,000 82 51,300
<br /> Cymbella amphicephala
<br /> Cymbella brehmii 224 6,180 2,870 79,000
<br /> Cymbella cesatii
<br /> Cymbella gaeumannii
<br /> Cymbella microcephala 278 14,200 386 19,700 82 4,160
<br /> Cymbella microcephala robusta
<br /> Cymbella minuta 4,350 562,000 1,110 221,000 38,800 5,000,000 91,700 18,200,000 3,280 424,000 545 108,000
<br /> Cymbella minuta lalens
<br /> Cymbella minuta silesiaca 973 396,000 113,000 45,900,000 386 276,000 436 177,000
<br /> Cymbella sp. (2 ANS WRC)
<br /> Cymbella sp. (3 ANS WRC) 2,030 440,000 55 11,800
<br /> Diploneis elliptica 55 102,000
<br /> Diploneis pseudovalis 193 22,900
<br /> Gomphonema acuminatum laticeps
<br /> Gomphonema angustatum 1,530 435,000 448 127,000 1,640 467,000 654 186,000
<br />...... Gomphonema gracile
<br />\0
<br /> Gomphonema olivaceoides 224 41,000
<br /> Gomphonema olivaceum 335 73,700 278 61,200 2,240 493,000 13 ,400 2,940,000
<br /> Gomphonema olivaceum minutissimum 191 14,500
<br /> Gomphonema parvulum 335 72,000
<br /> Gomphonema pumilum 97 25,000
<br /> Gomphonema subclavatum
<br /> Gomphonema tenellum 2,020 319,000 55 8,620
<br /> Gomphonema truncatum
<br /> Gomphonema ventricosum
<br /> Mastogloia smithii
<br /> Navicula acceptata 224 56,200
<br /> Navicula accomoda
<br /> Navicula agrestis
<br /> Navicula arvensis 3,820 431,000
<br /> Navicula atomus 2,870 99,700 97 3,360
<br /> Navicula cincta rostrata 335 41,200
<br /> Navicula cocconeiformis
<br /> Navicula cryptocephala 335 38,600
<br /> Navicula cryptocephala exilis
<br /> Navicula cryptocephala veneta 670 66,900 278 51,900 896 89,500 18,200 3,390,000 55 10,200
<br /> Navicula cryptotenella 670 184,000 278 76,400 2,910 800,000 11,500 3,150,000 97 26,500 55 15,000
<br /> Navicula decussis
<br /> Navicula detenta
<br /> Navicula elginensis
<br />
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