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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 /> [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 /> /1, 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 /> Nitzschia frustulum perminuta 335 16,500 4,480 221,000 5,730 208,000 55 1,980
<br /> Nitzschia fruticosa
<br /> Nitzschia gracilis
<br /> Nitzschia hantzschiana
<br /> Nitzschia hungarica
<br /> Nitzschia legleri
<br /> Nitzschia linearis 386 668,000
<br /> Nitzschia palea 1,010 177,000
<br /> Nitzschia palea debilis 1,340 105,000 278 21,800 386 30,200
<br /> Nitzschia palea sumatrana
<br /> Nitzschia paleacea
<br /> Nitzschia paleaeformis
<br /> Nitzschia pusilla 1,010 98,100
<br /> Nitzschia supralitorea
<br /> Nitzschia tubicola 502 211,000 17,200 7,230,000 386 162,000
<br /> Nitzschia umbilicata
<br /> Nitzschia vermicularis
<br /> Simonsenia delognei
<br /> Surirellaceae
<br />N Cymatopleura solea
<br />...... Surirella angusta 97 71,300
<br /> Surirella brebissonii 10,400 12,200,000 278 326,000
<br /> Surirella minuta 1,010 428,000 97 41,100
<br /> Thalassiosiraceae
<br /> Aulacosira distans
<br /> Aulacosira italica
<br /> Cyclostephanos invisitatus
<br /> Cyclotella meneghiniana
<br /> Cyclotella ocellata
<br /> Cyclotella pseudostelligera
<br /> Stephanodiscus hantzschii
<br /> Stephanodiscus medius
<br /> Stephanodiscus sp. (2 ANS WRC)
<br /> CRYPTOPHYTA (cryptomonads)
<br /> Cryptomonadaceae
<br /> Cryptomonas sp.
<br /> CY ANOPHYT A (blue-green algae)
<br /> Chroococcaceae
<br /> Microcystis sp. 35,500 610,000
<br /> Nostocaceae
<br /> Amphithrix Janthina 4,790,000 196,000,000 852,000 34,900,000 19,900 813,000
<br /> Calothrix parientina
<br /> Calothrix sp. 55,400 33,200
<br /> Nostoc sp.
<br /> Oscillatoriaceae
<br />
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