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 18. Algal density in depositional-targeted habitat at sites on the Truckee River: Upper Truckee River at South Lake Tahoe, Calif. (site 11, fig. 1) and Truckee River at Farad, Calif. (site 12, 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 11, Sept. 8, 1993 (cells/cm2) |
Site 12 | |||
|---|---|---|---|---|---|
| Reach A, Sept. 9, 1993 (cells/cm2) |
Reach B, Sept. 9, 1993 (cells/cm2) |
Reach C, Sept. 9, 1993 (cells/cm2) |
Reach A, Oct. 2, 1995 (percent) |
||
|
Total number of cells (rounded) |
14,000,000 | 7,100,000 | 4,600,000 | 4,300,000 |
-- |
| CYANOPHYTA | |||||
| Cyanophyceae | |||||
| Chroococcales | |||||
| Chroococcaceae | |||||
| Dactylococcopsis rhaphidioides | 0.2 | ||||
| Merismopedia glauca | 5.5 | ||||
| Nostocales | |||||
| Nostocaceae | |||||
| Anabaena sp. | 5.1 | ||||
| Anabaena oscillarioides | 2,500,000 | ||||
| Nostoc pruniforme | 280,000 | ||||
| Oscillatoriaceae | |||||
| Lyngbya sp. | 690,000 | 680,000 | 1,200,000 | ||
| Oscillatoria sp. | 5.0 | ||||
| Cyanophyceae | |||||
| Nostocales | |||||
| Rivulariaceae | |||||
| Calothrix parietina | 520,000 | ||||
| EUGLENOPHYTA | |||||
| Euglenophyceae | |||||
| Euglenales | |||||
| Euglenaceae | |||||
| Trachelomonas sp. | 6,300 | ||||
| BACILLARIOPHYTA | |||||
| Coscinodiscophyceae | |||||
| Thalassiosirales | |||||
| Stephanodiscaceae | |||||
| Cyclotella meneghiniana | 11,000 | 37,000 | 5,700 | 0.1 | |
| Cyclotella pseudostelligera | 37,000 | 0.3 | |||
| Cyclotella radiosa | 22,000 | 18,000 | 11,000 | 0.3 | |
| Melosirales | |||||
| Melosiraceae | |||||
| Melosira varians | 220,000 | 140,000 | 49,000 | 40,000 | 0.5 |
| Aulacosirales | |||||
| Aulacoseiraceae | |||||
| Aulacoseira ambigua | 150,000 | 0.7 | |||
| Aulacoseira italica | 150,000 | ||||
| Aulacoseira italica tenuissima | 300,000 | 12,000 | |||
| Fragilariophyceae | |||||
| Fragilariales | |||||
| Fragilariaceae | |||||
| Diatoma anceps | 74,000 | ||||
| Diatoma tenue elongatum | 6,100 | ||||
| Diatoma vulgare | 22,000 | 5,700 | 0.3 | ||
| Fragilaria crotonensis | 54,000 | 25,000 | 23,000 | ||
| Fragilaria exiguiformis | 37,000 | 43,000 | |||
| Fragilaria intermedia | 0.3 | ||||
| Fragilaria vaucheriae | 550,000 | 87,000 | 150,000 | 75,000 | 1.2 |
| Fragilariforma bicapitata | 0.3 | ||||
| Hannaea arcus | 110,000 | ||||
| Martyana martyi | 23,000 | ||||
| Meridion circulare | 37,000 | ||||
| Pseudostaurosira brevistriata | 3.0 | ||||
| Staurosira construens | 37,000 | 6,100 | |||
| Fragilaria construens pumila | 150,000 | 300,000 | 86,000 | 80,000 | 0.5 |
| Fragilaria construens subsalina | 300,000 | 370,000 | 210,000 | 110,000 | |
| Staurosira construens binodis | 74,000 | 180,000 | 92,000 | ||
| Staurosira construens venter | 1,400,000 | 310,000 | 290,000 | 410,000 | |
| Staurosirella leptostauron | 22,000 | 25,000 | |||
| Staurosirella pinnata | 3,200,000 | 990,000 | 1,000,000 | 970,000 | 1.6 |
| Synedra rumpens | 150,000 | ||||
| Synedra rumpens familiaris | 74,000 | 25,000 | |||
| Synedra rumpens fragilarioides | 12,000 | 23,000 | |||
| Synedra rumpens meneghiniana | 11,000 | ||||
| Synedra ulna | 37,000 | ||||
| Tabellariales | |||||
| Tabellariaceae | |||||
| Tabellaria fenestrata | 37,000 | ||||
| Tabellaria flocculosa | 37,000 | ||||
| Bacillariophyceae | |||||
| Eunotiales | |||||
| Eunotiaceae | |||||
| Eunotia exigua | 37,000 | ||||
| Eunotia tenella | 110,000 | ||||
| Cymbellales | |||||
| Cymbellaceae | |||||
| Cymbella affinis | 22,000 | 18,000 | 0.5 | ||
| Cymbella leptoceros | 11,000 | ||||
| Cymbella mexicana janischii | 65,000 | 25,000 | 23,000 | ||
| Cymbella naviculaformis | 0.8 | ||||
| Encyonema minutum | 260,000 | 350,000 | 120,000 | 200,000 | 4.9 |
| Encyonema silesiacum | 43,000 | 12,000 | 0.3 | ||
| Reimeria sinuata | 74,000 | 97,000 | 80,000 | 130,000 | 5.5 |
| Gomphonemataceae | |||||
| Gomphoneis eriense canadensis | 43,000 | ||||
| Gomphoneis eriense variabilis | 46,000 | ||||
| Gomphoneis herculeana | 18,000 | 0.1 | |||
| Gomphoneis minuta | 0.3 | ||||
| Gomphonema sp. | 74,000 | 65,000 | 6,100 | 5,700 | 0.3 |
| Gomphonema acuminatum | 0.3 | ||||
| Gomphonema angustatum | 12,000 | ||||
| Gomphonema angustatum intermedia | 22,000 | ||||
| Gomphonema intricatum | 11,000 | ||||
| Gomphonema parvulum | 74,000 | 12,000 | 11,000 | 0.3 | |
| Rhoicospheniaceae | |||||
| Rhoicosphenia abbreviata | 25,000 | 34,000 | 0.7 | ||
| Achanthales | |||||
| Achnanthidiaceae | |||||
| Achnanthidium minutissimum | 890,000 | 600,000 | 98,000 | 120,000 | 9.7 |
| Karayevia clevei | 18,000 | ||||
| Achnanthidium clevei rostratum | 37,000 | ||||
| Planothidium dubium | 150,000 | 65,000 | 18,000 | ||
| Achnanthes hauckiana rostrata | 5,700 | ||||
| Planothidium lanceolatum | 150,000 | 31,000 | 11,000 | 2.2 | |
| Planothidium peragallii | 12,000 | ||||
| Rossithidium pusillum | 370,000 | 32,000 | 31,000 | 29,000 | 0.5 |
| Cocconeidaceae | |||||
| Cocconeis pediculus | 22,000 | ||||
| Cocconeis placentula euglypta | 300,000 | 100,000 | 230,000 | 1.1 | |
| Cocconeis placentula lineata | 370,000 | 200,000 | 37,000 | 23,000 | |
| Naviculales | |||||
| Amphipleuraceae | |||||
| Frustulia vulgaris | 18,000 | 12,000 | |||
| Diadesmidaceae | |||||
| Navicula contenta biceps | 12,000 | ||||
| Naviculaceae | |||||
| Geissleria decussis | 370,000 | 110,000 | 6,100 | 0.8 | |
| Geissleria schoenfeldii | |||||
| Hippodonta capitata | 37,000 | 33,000 | 86,000 | 46,000 | 2.2 |
| Navicula sp. | 7.0 | ||||
| Navicula arvensis | 11,000 | ||||
| Navicula canoris | 150,000 | ||||
| Navicula clementis | 12,000 | ||||
| Navicula cryptocephala | 11,000 | 0.3 | |||
| Navicula genovefae | 12,000 | 2.6 | |||
| Navicula graciloides | 74,000 | 43,000 | 31,000 | 34,000 | |
| Navicula gregaria | 37,000 | 65,000 | 0.3 | ||
| Navicula menisculus | 110,000 | 31,000 | 23,000 | 0.5 | |
| Navicula minima | 220,000 | 22,000 | 31,000 | 11,000 | 0.5 |
| Navicula pseudolanceolata | 0.4 | ||||
| Navicula rhynchocephala | 0.3 | ||||
| Navicula rhynchocephala germainii | 0.3 | ||||
| Navicula salinarum intermedia | 260,000 | 49,000 | 92,000 | 0.8 | |
| Navicula secreta apiculata | 130,000 | 98,000 | 46,000 | 16.6 | |
| Navicula tripunctata | 43,000 | 11,000 | 0.3 | ||
| Navicula viridula | 43,000 | ||||
| Neidiaceae | |||||
| Neidium affine | 0.3 | ||||
| Sellaphoraceae | |||||
| Sellaphora pupula | 43,000 | 23,000 | 0.8 | ||
| Sellaphora pupula rectangularis | 37,000 | 25,000 | |||
| Thalassiophysales | |||||
| Catenulaceae | |||||
| Amphora ovalis | 11,000 | 12,000 | 11,000 | ||
| Amphora ovalis pediculus | 110,000 | 18,000 | 11,000 | ||
| Amphora perpusilla | 12,000 | 0.3 | |||
| Bacillarales | |||||
| Bacillariaceae | |||||
| Hantzschia amphioxys | 37,000 | ||||
| Nitzschia amphibia | 37,000 | 12,000 | |||
| Nitzschia dissipata | 65,000 | 49,000 | 23,000 | 1.6 | |
| Nitzschia dissipata media | 150,000 | 0.3 | |||
| Nitzschia fonticola | 11,000 | ||||
| Nitzschia frustulum | 74,000 | 260,000 | 110,000 | 52,000 | 0.6 |
| Nitzschia frustulum perminuta | 55,000 | 300,000 | 190,000 | 210,000 | 3.3 |
| Nitzschia frustulum subsalina | 43,000 | 6,100 | 11,000 | ||
| Nitzschia kuetzingiana | 260,000 | 25,000 | 11,000 | 3.7 | |
| Nitzschia linearis | 5,700 | ||||
| Nitzschia palea | 43,000 | 0.5 | |||
| Nitzschia romana | 74,000 | 11,000 | 0.3 | ||
| Tryblionella hungarica | 37,000 | ||||
| Rhopalodiales | |||||
| Rhopalodiaceae | |||||
| Epithemia sorex | 37,000 | 11,000 | |||
| Epithemia turgida | 74,000 | ||||
| Surirellales | |||||
| Surirellaceae | |||||
| Surirella angusta | 0.8 | ||||
| Surirella minuta | 0.1 | ||||
| CHLOROPHYTA | |||||
| Undetermined species | 0.5 | ||||
| Chlorophyceae | |||||
| Chlorococcales | |||||
| Oocystaceae | |||||
| Ankistrodesmus falcatus | 19,000 | 0.7 | |||
| Scenedesmaceae | |||||
| Scenedesmus ecornis | 72,000 | ||||
| Scenedesmus quadricauda | 72,000 | 57,000 | 0.9 | ||
| Microsporales | |||||
| Microsporaceae | |||||
| Microspora stagnorum | 68,000 | ||||
| Charophyceae | |||||
| Zygnemateles | |||||
| Desmidiaceae | |||||
| Closterium moniliferum | 14,000 | ||||
| Staurastrum anatinum parvum | 6,300 | ||||
| Staurastrum turgescens | 6,300 | ||||