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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; B, biovolume as cubic micrometers per square centimeter; densities and biovolumes rounded to 3 significant <br /> figures; <br /> j1, micrometer; <, less than; Site abbreviations are used in this table. See table I 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 B A B A B A B A B A B <br /> DIVISION <br /> Family <br /> Genus species variety <br /> Diatoma mesodon <br /> Diatoma moniliformis <br /> Diatoma tenue <br /> Diatoma vulgare <br /> Fragilaria bicapitata <br /> Fragilaria brevistrata (1 ANS WRC) <br /> Fragilaria brevistriata <br /> Fragilaria brevistriata inflata <br /> Fragilaria capucina 2,890 599,000 <br /> Fragilaria construens <br /> Fragilaria construens binodis <br /> Fragilaria construens pumila <br /> Fragilaria construens venter 687 69,000 <br /> Fragilaria crotonensis <br /> Fragilaria famelica <br /> Fragilaria leptostauron <br /> Fragilaria pinnata 55 3,380 <br /> Fragilaria pinnata acuminata <br /> Fragilaria tenera 434 35,800 <br /> Fragilaria vaucheriae 289 34,500 110 19,700 275 32,800 <br />Vol Fragilaria vaucheriae (1 ANS WRC) 845 158,000 <br />0 <br /> Fragilaria virescens <br /> Hannaea arcus <br /> Meridian circulare <br /> Synedra acus 289 914,000 <br /> Synedra pulchella <br /> Synedra rumpens <br /> Synedra rumpens fragilarioides <br /> Synedra ulna <br /> Tabellariaflocculosa (strain IV) <br /> Epithemiaceae <br /> Epithemia sorex 275 294,000 <br /> Rhopalodia gibba <br /> Eunotiaceae <br /> Eunotia arcus <br /> Eunotia exigua <br /> Melosiraceae <br /> Melosira sp. (2 ANS WRC) <br /> Melosira valdii <br /> Melosira varians <br /> Naviculaceae <br /> Amphipleura pellucida 145 76,900 <br /> Amphora coffeaeformis 289 44,200 <br /> Amphora ovalis affinis <br /> Amphora perpusilla 16,800 681,000 23,100 784,000 2,200 88,900 39,700 1,350,000 <br />