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 11. Algal density in depositional-targeted habitat at sites on the Carson River: Carson River at Dayton, Nev. (site 8, fig. 1) and Carson River at Tarzyn Road near Fallon, Nev. (site 10, fig. 1), 1993 and 1995. Habitats sampled were sediment in pools.
[Abbreviations and symbols: cells/cm2, cells per square centimeter; sp., species; --, not applicable]
|
Taxon |
Site 8 |
Site 10 |
|
|---|---|---|---|
| July 14, 1994 (cells/cm2) |
Sept. 19, 1995 (percent) |
||
|
Total number of cells |
4,700,000 |
-- |
19,000,000 |
| CYANOPHYTA | |||
| Undetermined species | 37,000 | 0.3 | |
| Cyanophyceae | |||
| Chroococcales | |||
| Chroococcaceae | |||
| Dactylococcopsis rhaphidioides | 0.2 | ||
| Nostocales | |||
| Nostocaceae | |||
| Anabaena sp. | 2,200,000 | 21.7 | |
| Nostoc pruniforme | 680,000 | ||
| Oscillatoriaceae | |||
| Lyngbya sp. | 85,000 | 2.6 | |
| Oscillatoria sp.1 | 14.7 | ||
| CRYPTOPHYTA | |||
| Undetermined sp. | 18,000 | ||
| Cryptophyceae | |||
| Cryptomonadales | |||
| Cryptomonadaceae | |||
| Cryptomonas sp. | 0.2 | ||
| EUGLENOPHYTA | |||
| Euglenophyceae | |||
| Euglenales | |||
| Euglenaceae | |||
| Euglena sp. | 18,000 | 0.3 | |
| BACILLARIOPHYTA | |||
| Coscinodiscophyceae | |||
| Thalassiosirales | |||
| Stephanodiscaceae | |||
| Cyclotella meneghiniana | 3,800 | 0.9 | 110,000 |
| Stephanodiscus hantzschii | 7,700 | ||
| Melosirales | |||
| Melosiraceae | |||
| Melosira varians | 1.3 | ||
| Lepocinclis sp. | 0.2 | ||
| Aulacoseirales | |||
| Aulacoseiraceae | |||
| Aulacoseira alpigena | 0.1 | ||
| Fragilariophyceae | |||
| Fragilariales | |||
| Fragilariaceae | |||
| Diatoma vulgare | 7,700 | ||
| Fragilaria exiguiformis | 180,000 | 1.2 | |
| Martyana martyi | 7,700 | ||
| Pseudostaurosira brevistriata | 31,000 | 0.4 | |
| Fragilaria construens pumila | 96,000 | 1.2 | |
| Fragilaria construens subsalina | 110,000 | ||
| Staurosira construens venter | 490,000 | 5.6 | |
| Staurosirella pinnata | 600,000 | 5.0 | 15,000,000 |
| Synedra ulna | 7,700 | 29,000 | |
| Synedra ulna danica | 29,000 | ||
| Synedra ulna oxyrhynchus | 7,700 | ||
| Bacillariophyceae | |||
| Cymbellales | |||
| Cymbellaceae | |||
| Navicula elginensis neglecta | 7,700 | ||
| Reimeria sinuata | 7,700 | 0.6 | |
| Gomphonemataceae | |||
| Gomphonema sp. | 57,000 | ||
| Gomphonema cf. clevei | 1.2 | ||
| Gomphonema parvulum | 290,000 | ||
| Gomphonema truncatum capitatum | 7,700 | ||
| Rhoicospheniaceae | |||
| Rhoicosphenia abbreviata | 15,000 | 0.2 | 57,000 |
| Achnanthales | |||
| Achnanthidiaceae | |||
| Achnanthidium exiguum | 19,000 | 0.2 | |
| Achnanthidium minutissimum | 7,700 | 0.2 | 110,000 |
| Planothidium dubium | 84,000 | 0.4 | |
| Achnanthes hauckiana rostrata | 23,000 | 0.2 | 170,000 |
| Planothidium lanceolatum | 7,700 | 0.4 | 57,000 |
| Cocconeidaceae | |||
| Cocconeis pediculus | 61,000 | 0.4 | 140,000 |
| Cocconeis placentula euglypta | 35,000 | 1.9 | 86,000 |
| Cocconeis placentula lineata | 12,000 | 0.2 | 260,000 |
| Naviculales | |||
| Amphipleuraceae | |||
| Amphipleura pellucida | 7,700 | ||
| Naviculaceae | |||
| Hippodonta capitata | 7,700 | ||
| Navicula sp. | 1.0 | ||
| Navicula biconica | 0.2 | ||
| Navicula cincta rostrata | 0.2 | ||
| Navicula clementis | 7,700 | ||
| Navicula cryptocephala veneta | 15,000 | ||
| Navicula gregaria | 3,800 | 0.4 | |
| Navicula minima | 3,800 | 57,000 | |
| Navicula minisculus | 3,800 | ||
| Navicula rhynchocephala germainii | 19,000 | 11.7 | 57,000 |
| Navicula salinarum intermedia | 11,000 | 1.6 | |
| Navicula secreta apiculata | 46,000 | 0.7 | 140,000 |
| Navicula tantula | 7,700 | ||
| Navicula tripunctata | 7,700 | ||
| Navicula tripunctata schizonemoides | 7,700 | ||
| Navicula viridula avenaceae | 7,700 | ||
| Neidiaceae | |||
| Neidium dubium | 2.4 | ||
| Pinnulariaceae | |||
| Caloneis amphisblaena | 27,000 | ||
| Caloneis ventricosa truncatula | 29,000 | ||
| Sellaphoraceae | |||
| Fallacia pygmaea | 29,000 | ||
| Sellaphora pupula | 7,700 | 0.9 | 86,000 |
| Stauroneidaceae | |||
| Craticula cuspidata | 0.1 | ||
| Thalassiophysales | |||
| Catenulaceae | |||
| Amphora ovalis | 0.2 | 29,000 | |
| Amphora ovalis pediculus | 0.8 | ||
| Amphora perpusilla | 0.1 | ||
| Bacillariales | |||
| Bacillariaceae | |||
| Bacillaria paxillifer | 29,000 | ||
| Nitzschia acicularis | 2.4 | ||
| Nitzschia amphibia | 7,700 | 0.3 | 86,000 |
| Nitzschia dissipata | 0.2 | ||
| Nitzschia frustulum | 1,500 | 0.2 | 57,000 |
| Nitzschia frustulum perminuta | 54,000 | 230,000 | |
| Nitzschia frustulum subsalina | 31,000 | 0.2 | |
| Nitzschia kuetzingiana | 35,000 | 12.0 | 57,000 |
| Nitzschia palea | 7,700 | 1.1 | |
| Nitzschia romana | 7,700 | ||
| Nitzschia subtilis | 0.2 | ||
| Rhopalodiales | |||
| Rhopalodiaceae | |||
| Epithemia sorex | 120,000 | 0.8 | 140,000 |
| Epithemia turgida | 15,000 | ||
| Rhopalodia gibba ventricosa | 12,000 | ||
| Rhopalodia gibberula | 15,000 | ||
| Surirellales | |||
| Surirellaceae | 3,800 | ||
| Cymatopleura solea | 0.1 | ||
| Surirella minuta | 29,000 | ||
| CHLOROPHYTA | |||
| Undetermined species | 32,000 | 0.2 | |
| Chlorophyceae | |||
| Chlorococcales | |||
| Oocystaceae | |||
| Ankistrodesmus falcatus | 23,000 | 0.3 | |
| Kirchneriella lunaris | 0.3 | ||
| Scenedesmaceae | |||
| Scenedesmus bijuga | 18,000 | ||
| Scenedesmus denticulatus | 21,000 | ||
| Scenedesmus quadricauda | 1,000,000 | ||
| Charophyceae | |||
| Zygnematales | |||
| Desmidiaceae | |||
| Cosmarium subcrenatum | 15,000 | ||