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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 /> II, 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 11196 11197
<br /> A B A B A B A B A B A B
<br /> DIVISION
<br /> Family
<br /> Genus species variety
<br /> Nitzschia frustulum perminuta 289 14,300 1,020 36,800 24,800 1,220,000 31,400 1,140,000 2,750 135,000 147,000 5,330,000
<br /> Nitzschia fruticosa
<br /> Nitzschia gracilis
<br /> Nitzschia hantzschiana
<br /> Nitzschia hungarica
<br /> Nitzschia legleri 82 5,010 1,680 102,000
<br /> Nitzschia linearis 289 500,000
<br /> Nitzschia palea
<br /> Nitzschia palea debilis 289 22,600 1,680 132,000
<br /> Nitzschia palea sumatrana
<br /> Nitzschia paleacea
<br /> Nitzschia paleaeformis
<br /> Nitzschia pusilla 868 84,700 110 10,700
<br /> Nitzschia supralitorea 579 21,900
<br /> Nitzschia tubicola 841 354,000
<br /> Nitzschia umbilicata
<br /> Nitzschia vermicularis 55 428
<br /> Simonsenia delognei
<br /> Surirellaceae
<br />U.) Cymatopleura solea
<br />U.) Surirella angusta 841 621,000
<br /> Surirella brebissonii 145 170,000
<br /> Surirella minuta 247 105,000 421 179,000 275 117,000
<br /> Thalassiosiraceae
<br /> Aulacosira distans
<br /> Aulacosira italica
<br /> Cyclostephanos invisitatus
<br /> Cyclotella meneghiniana 1,260 740,000
<br /> Cyclotella ocellata
<br /> Cyclotella pseudostelligera
<br /> Stephanodiscus hantzschii
<br /> Stephanodiscus medius
<br /> Stephanodiscus sp. (2 ANS WRC) 1,680 16,700
<br /> CRYPTOPHYTA (cryptomonads)
<br /> Cryptomonadaceae
<br /> Cryptomonas sp.
<br /> CYANOPHYTA (blue-green algae)
<br /> Chroococcaceae
<br /> Microcystis sp.
<br /> Nostocaceae
<br /> Amphithrix Janthina 29,300 1,200,000 19,300 790,000
<br /> Calothrix parientina
<br /> Calothrix sp.
<br /> Nostoc sp.
<br /> Oscillatoriaceae
<br />
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