USGS Open-File Report 02-012
Physical Data and Biological Data for Algae, Aquatic Invertebrates, and Fish from Selected Reaches on the Carson and Truckee Rivers, Nevada and California, 1993-97
Table 3. Algal density in richest-targeted habitat at sites on the Carson River: East Fork Carson River near Dresslerville, Nev. (site 1, fig. 1), 1993-96. Habitats sampled were cobble riffles.
[Abbreviations: cells/cm2, cells per square centimeter; sp., species]
|
Taxon |
Reach A, Sept. 1, 1993 (cells/cm2) |
Reach B, Sept. 1, 1993 (cells/cm2) |
Reach C, Sept. 1, 1993 (cells/cm2) |
Reach B, July 26 1994 (cells/cm2) |
Reach B, Sept. 15, 1995 (cells/cm2) |
Reach B, Oct. 11 1996 (cells/cm2) |
|---|---|---|---|---|---|---|
| Total number of cells (rounded) | 5,900,000 | 27,000,000 | 49,000,000 | 15,000,000 | 2,400,000 | 1,700,000 |
| CYANOPHYTA | ||||||
| Undetermined species | 22,000 | 4,600 | ||||
| Cyanophyceae | ||||||
| Chamaesiphonales | ||||||
| Chamaesiphonaceae | ||||||
| Chamaesiphon incrustans | 1,200 | |||||
| Nostocales | ||||||
| Nostacaceae | ||||||
| Anabaena sp. | 190,000 | 15,000 | ||||
| Anabaena affinis | 18,000 | |||||
| Anabaena oscillarioides | 29,000 | |||||
| Nostoc pruniforme | 730,000 | |||||
| Oscillatoriaceae | ||||||
| Hydrocoleum brebissonii | 1,100,000 | 18,000 | ||||
| Lyngbya sp. | 1,600,000 | 130,000 | 180,000 | |||
| Lyngbya epiphytica | 55,000 | |||||
| Lyngbya martensiana | 7,000 | |||||
| Oscillatoria sp. | 3,800,000 | 230,000 | 330,000 | |||
| Rivulariaceae | ||||||
| Calothrix sp. | 4,800,000 | 1,700,000 | ||||
| Calothrix parietina | 5,700,000 | 25,000,000 | 410,000 | |||
| Nemaliales | ||||||
| Acrochaetiaceae | ||||||
| Audouinella hermanii | 74,000 | 18,000 | 46,000 | |||
| EUGLENOPHYTA | ||||||
| Euglenophyceae | ||||||
| Euglenales | ||||||
| Euglenaceae | ||||||
| Euglena sp. | 2,100 | |||||
| BACILLARIOPHYTA | ||||||
| Coscinodiscophyceae | ||||||
| Thalassiosirales | ||||||
| Stephanodiscophyceae | ||||||
| Cyclotella meneghiniana | 1,600 | 980 | ||||
| Aulacoseirales | ||||||
| Aulacoseiraceae | ||||||
| Aulacoseira italica | 560 | |||||
| Fragilariophyceae | ||||||
| Fragilariales | ||||||
| Fragilariaceae | ||||||
| Ctenophora pulchella | 280 | |||||
| Diatoma vulgare | 280 | 23,000 | ||||
| Fragilaria vaucheriae | 930 | 17,000 | ||||
| Fragilaria virescens exigua | 8,200 | |||||
| Martyana martyi | 470 | |||||
| Pseudostaurosira brevistriata | 3,900 | |||||
| Fragilaria construens pumila | 470 | |||||
| Staurosira construens | 8,200 | |||||
| Staurosira construens venter | 230 | 16,000 | ||||
| Staurosirella pinnata | 4,700 | 8,700 | 120,000 | 560 | 7,900 | |
| Synedra mazamaensis | 68,000 | |||||
| Synedra ulna | 4,100 | 3,900 | ||||
| Bacillariophyceae | ||||||
| Eunotiales | ||||||
| Eunotiaceae | ||||||
| Eunotia exigua | 230 | |||||
| Cymbellales | ||||||
| Cymbellaceae | ||||||
| Cymbella sp. | 700 | 200,000 | 49,000 | 280 | ||
| Cymbella affinis | 1,200 | 850 | 21,000 | |||
| Cymbella cistula | 280 | |||||
| Cymbella mexicana janischii | 8,200 | |||||
| Cymbella tumida | 8,700 | |||||
| Encyonema minutum | 2,600 | 8,700 | 280 | |||
| Encyonema silesiacum | 8,200 | |||||
| Reimeria sinuata | 2,100 | 110,000 | 210,000 | 9,900 | 13,000 | |
| Gomphonemataceae | ||||||
| Gomphoneis eriense variabilis | 8,700 | 33,000 | ||||
| Gomphoneis herculeana | 18,000 | 25,000 | 7,900 | |||
| Gomphoneis olivacea | 230 | 8,800 | 560 | |||
| Gomphonema sp. | 19,000 | 300,000 | 710,000 | 32,000 | ||
| Gomphonema cf. clevei | 20,000 | |||||
| Gomphonema intricatum | 1,100 | 2,000 | ||||
| Rhoicospeniaceae | ||||||
| Rhoicosphenia abbreviata | 700 | 18,000 | 58,000 | 1,100 | 2,000 | |
| Achnanthales | ||||||
| Acnanthidiaceae | ||||||
| Achnanthes grana | 2,000 | |||||
| Achnanthidium minutissimum | 8,700 | 21,000 | 560 | 16,000 | ||
| Planothidium dubium | 3,000 | |||||
| Planothidium lanceolatum | 700 | 8,700 | ||||
| Cocconeidaceae | ||||||
| Cocconeis pediculus | 8,200 | 4,900 | ||||
| Cocconeis placentula euglypta | 13,000 | 96,000 | 41,000 | 1,100 | 21,000 | |
| Cocconeis placentula lineata | 3,000 | 35,000 | 2,000 | |||
| Naviculales | ||||||
| Naviculaceae | ||||||
| Geissleria schoenfeldii | 16,000 | |||||
| Navicula sp. | 15,000 | |||||
| Navicula lanceolata | 280 | |||||
| Navicula menisculus | 700 | 950 | ||||
| Navicula minima | 4,100 | |||||
| Navicula salinarum intermedia | 940 | 45,000 | 25,000 | |||
| Navicula tripunctata | 18,000 | 8,200 | ||||
| Pinnulariaceae | ||||||
| Caloneis bacillum | 41,000 | 850 | 5,900 | |||
| Caloneis hyalina | 230 | |||||
| Pinnularia borealis | 280 | |||||
| Sellaphoraceae | ||||||
| Sellaphora pupula | 16,000 | |||||
| Thalassiophysales | ||||||
| Catenulaceae | ||||||
| Amphora perpusilla | 4,100 | 3,900 | ||||
| Bacillarales | ||||||
| Bacillariaceae | ||||||
| Nitzschia amphibia | 4,100 | |||||
| Nitzschia dissipata media | 230 | |||||
| Nitzschia frustulum | 1,400 | 8,700 | 120,000 | 280 | 53,000 | |
| Nitzschia frustulum perminuta | 930 | 33,000 | 19,000 | |||
| Nitzschia kuetzingiana | 470 | 2,000 | ||||
| Rhopalodiales | ||||||
| Rhopalodiaceae | ||||||
| Epithemia adnata | 2,000 | |||||
| Epithemia sorex | 72,000 | 830,000 | 120,000 | 220,000 | ||
| Epithemia turgida | 11,000 | 26,000 | 4,100 | 1,100 | 2,000 | |
| Rhopalodia gibba | 700 | 35,000 | 4,100 | |||
| Rhopalodia gibba ventricosa | 4,100 | 280 | ||||
| Surirellaceae | ||||||
| Surirella minuta | 230 | |||||
| CHLOROPHYTA | ||||||
| Undetermined species | ||||||
| Chlorophyceae | ||||||
| Chlorococcales | ||||||
| Oocystaceae | ||||||
| Ankistrodesmus falcatus | 26,000 | 11,000 | 2,100 | |||
| Kirchneriella lunaris | 11,000 | 6,200 | ||||
| Chaetophorales | ||||||
| Chaetophoraceae | ||||||
| Stigeoclonium lubricum | 49,000 | 1,500,000 | 280,000 | 270,000 | 72,000 | 75,000 |
| Oedogoniales | ||||||
| Oedogoniaceae | ||||||
| Oedogonium sp. | 190,000 | |||||
| Ulvophyceae | ||||||
| Cladophorales | ||||||
| Cladophoraceae | ||||||
| Cladophora sp. | 20,000 | |||||
| Charophyceae | ||||||
| Zygnemateles | ||||||
| Zygnemataceae | ||||||
| Spirogyra sp. | 15,000 |