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 21. Algal density in depositional-targeted habitat at sites on the Truckee River: Truckee River at Lockwood, Nev. (site 16, fig. 1), Truckee River at Wadsworth, Nev. (site 18, fig. 1), and Truckee River at Dead Ox Wash near Nixon, Nev. (site 19, fig. 1), 1993-95. Habitats sampled were sediment in pools.
[Abbreviations and symbols: cells/cm2, cells per square centimeter; sp., species; --, not applicable]
| Taxon | Site 16 | Site 18 | Site 19 | |||
|---|---|---|---|---|---|---|
| July 6, 1994 (cells/cm2) |
Sept. 26, 1995 (percent) |
Oct. 13, 1995 (percent) |
Sept. 16, 1993 (cells/cm2) |
July 8, 1994 (cells/cm2) |
Oct. 6, 1995 (percent) |
|
|
Total number of cells (rounded) |
14,000,000 | -- | -- | 24,000,000 | 860,000 | -- |
| CYANOPHYTA | ||||||
| Cyanophyceae | ||||||
| Chroococcales | ||||||
| Chroococcaceae | ||||||
| Dactylococcopsis rhaphidioides | 23,000 | |||||
| Nostocales | ||||||
| Nostocaceae | ||||||
| Anabaena oscillarioides | 2,400,000 | |||||
| Oscillatoriaceae | ||||||
| Hydrocoleum brebissonii | 450,000 | |||||
| Lyngbya sp. | 8,000,000 | |||||
| Oscillatoria sp. | 2.8 | 6.9 | ||||
| Oscillatoria tenuis | 1,700,000 | |||||
| Spirulina subsalsa | 23,000 | |||||
| CRYPTOPHYTA | ||||||
| Undetermined species | 23,000 | |||||
| EUGLENOPHYTA | ||||||
| Euglenophyceae | ||||||
| Euglenales | ||||||
| Euglenaceae | ||||||
| Euglena sp. | 17,000 | |||||
| Lepocinclis fusiformis | 45,000 | |||||
| Trachelomonas sp. | 17,000 | |||||
| Trachelomonas hispida | 23,000 | |||||
| CHRYSOPHYTA | ||||||
| Coscinodiscophyceae | ||||||
| Thalassiosirales | ||||||
| Stephanodiscaceae | ||||||
| Cyclotella meneghiniana | 410,000 | 1.1 | 2.5 | 0.8 | ||
| Melosirales | ||||||
| Melosiraceae | ||||||
| Melosira varians | 860,000 | 0.5 | 1.4 | 70,000 | 0.3 | |
| Aulacosirales | ||||||
| Aulacoseiraceae | ||||||
| Aulacoseira ambigua | 0.3 | 0.6 | 0.3 | |||
| Aulacoseira italica | 0.3 | 0.2 | ||||
| Fragilariophyceae | ||||||
| Fragilariales | ||||||
| Fragilariaceae | ||||||
| Diatoma vulgare | 470,000 | 0.3 | 3.7 | 4,300 | 1.3 | |
| Fragilaria capucina mesolepta | 1.8 | |||||
| Fragilaria exiguiformis | 37,000 | |||||
| Fragilaria vaucheriae | 490,000 | 0.6 | 140,000 | 1.3 | ||
| Hannaea arcus | 37,000 | |||||
| Martyana martyi | ||||||
| Pseudostaurosira brevistriata | 2.8 | 5.1 | 14,000 | 14.3 | ||
| Fragilaria brevistriata inflata | 0.3 | 1.3 | ||||
| Staurosira construens | 0.5 | |||||
| Fragilaria construens pumila | 620,000 | 0.3 | 1.2 | 93,000 | 54,000 | 2.0 |
| Fragilaria construens subsalina | 46,000 | |||||
| Staurosira construens binodis | 1.4 | 970,000 | 59,000 | |||
| Staurosira construens venter | 990,000 | 1.0 | 11.8 | 3,200,000 | 93,000 | 3.0 |
| Staurosirella leptostauron | 0.3 | 46,000 | ||||
| Staurosirella pinnata | 1,900,000 | 14.4 | 4.5 | 5,800,000 | 300,000 | 6.2 |
| Fragilaria pinnata lancettula | 0.7 | 0.3 | ||||
| Fragilaria pinnata subcapitata | 2,800 | |||||
| Synedra acus | 0.3 | |||||
| Synedra mazamaensis | 220,000 | 0.7 | 0.3 | |||
| Synedra parasitica | 37,000 | 0.3 | ||||
| Synedra rumpens familiaris | 0.5 | |||||
| Synedra rumpens meneghiniana | 0.3 | 0.3 | ||||
| Synedra ulna | 37,000 | 0.5 | 0.3 | 190,000 | 0.3 | |
| Synedra ulna oxyrhynchus | 0.3 | |||||
| Cymbellales | ||||||
| Cymbellaceae | ||||||
| Cymbella sp. | 0.3 | 0.3 | ||||
| Cymbella brehmii | 37,000 | |||||
| Encyonema minutum | 150,000 | 3.4 | 0.6 | 46,000 | 2,800 | 1.3 |
| Encyonema muelleri | 75,000 | |||||
| Encyonema silesiacum | 75,000 | |||||
| Encyonema triangulum | 0.3 | |||||
| Cymbella microcephala crassa | 37,000 | |||||
| Placoneis placentula | 2,800 | |||||
| Reimeria sinuata | 37,000 | 0.8 | 1.8 | 2,800 | 0.8 | |
| Reimeria sinuata antiqua | 0.3 | |||||
| Gomphonemataceae | ||||||
| Gomphoneis herculeana | 37,000 | 1.0 | 0.3 | |||
| Gomphoneis minuta | 0.3 | |||||
| Gomphoneis olivacea | 37,000 | 0.3 | 0.8 | |||
| Gomphonema sp. | 190,000 | 0.7 | 2.5 | 46,000 | 2,800 | 1.5 |
| Gomphonema angustatum intermedia | 0.3 | |||||
| Gomphonema parvulum | 19,000 | 0.3 | 0.3 | |||
| Gomphonema subclavatum | 5,700 | |||||
| Gomphonema truncatum capitatum | 46,000 | |||||
| Rhoicospheniaceae | ||||||
| Rhoicosphenia abbreviata | 500,000 | 4.0 | 4.5 | 330,000 | 27,000 | 6.2 |
| Achanthales | ||||||
| Achnanthaceae | ||||||
| Lemnicola hungarica | 0.3 | 0.3 | ||||
| Achnanthidiaceae | ||||||
| Achnanthes pinnata | 0.3 | 0.3 | ||||
| Achnanthidium exiguum | 37,000 | 0.3 | 47,000 | |||
| Achnanthidium exiguum heterovalvum | 0.2 | |||||
| Achnanthidium minutissimum | 210,000 | 8.6 | 1.1 | 190,000 | 2,800 | 2.0 |
| Karayevia clevei | 37,000 | 0.5 | ||||
| Planothidium dubium | 37,000 | 1.3 | 0.3 | 2,800 | 0.3 | |
| Planothidium lanceolatum | 110,000 | 0.3 | ||||
| Rossithidium pusillum | 0.3 | |||||
| Cocconeidaceae | ||||||
| Cocconeis pediculus | 170,000 | 0.9 | 790,000 | 180,000 | 2.7 | |
| Cocconeis placentula euglypta | 350,000 | 2.9 | 2.6 | 230,000 | 71,000 | 6.0 |
| Cocconeis placentula lineata | 150,000 | 0.7 | 0.6 | 46,000 | 8,500 | 0.3 |
| Naviculales | ||||||
| Diadesmidaceae | ||||||
| Luticola mutica | 47,000 | |||||
| Diploneidaceae | ||||||
| Diploneis puella | 37,000 | |||||
| Naviculaceae | ||||||
| Fistulifera pelliculosa | 0.3 | |||||
| Geissleria decussis | 37,000 | |||||
| Hippodonta capitata | 1.9 | 0.6 | 0.3 | |||
| Navicula sp. | 1.3 | 0.9 | ||||
| Navicula anglica | 0.2 | |||||
| Navicula biconica | 0.3 | 0.7 | ||||
| Navicula cari | 75,000 | 2,800 | ||||
| Navicula cincta | 0.3 | |||||
| Navicula cincta rostrata | 37,000 | 1.0 | ||||
| Navicula cryptocephala | 37,000 | |||||
| Navicula cryptocephala veneta | 37,000 | 5,700 | ||||
| Navicula gregaria | 0.3 | 2,800 | ||||
| Navicula luzonensis | 0.7 | |||||
| Navicula minima | 37,000 | 70,000 | 0.3 | |||
| Navicula paucivisitata | 0.3 | |||||
| Navicula rhynchocephala germainii | 5.2 | 4.5 | 140,000 | 2,800 | 2.8 | |
| Navicula salinarum intermedia | 350,000 | 15.5 | 3.7 | 23,000 | 2,800 | 9.0 |
| Navicula secreta apiculata | 37,000 | 3.1 | 3.1 | 14,000 | 2.2 | |
| Navicula tantula | 0.3 | |||||
| Navicula tripunctata | 37,000 | 1.5 | ||||
| Navicula tripunctata schizonemoides | 0.6 | 46,000 | 5,700 | |||
| Navicula viridula | 23,000 | |||||
| Navicula viridula avenacea | 37,000 | 1.1 | 2.8 | 11,000 | 2.0 | |
| Pinnulariaceae | ||||||
| Caloneis amphisbaena | 0.2 | |||||
| Caloneis lewisii | 0.2 | |||||
| Sellaphoraceae | ||||||
| Fallacia pygmaea | 37,000 | |||||
| Sellaphora pupula | 110,000 | 0.6 | 3.4 | 46,000 | 5,700 | 0.8 |
| Sellaphora pupula rectangularis | 0.3 | |||||
| Sellaphora seminulum | 0.2 | 0.3 | ||||
| Stauroneidaceae | ||||||
| Craticula cuspidata | 23,000 | |||||
| Thalassiophysales | ||||||
| Catenulaceae | ||||||
| Amphora ovalis pediculus | 37,000 | 0.5 | ||||
| Amphora perpusilla | 37,000 | 0.2 | 0.3 | |||
| Amphora veneta | 46,000 | |||||
| Bacillarales | ||||||
| Bacillariaceae | ||||||
| Nitzschia acicularis | 37,000 | 46,000 | 0.3 | |||
| Nitzschia amphibia | 150,000 | 3.6 | 0.6 | 2,800 | 5.2 | |
| Nitzschia bacata | 37,000 | |||||
| Nitzschia dissipata | 37,000 | 1.3 | 1.7 | 1.2 | ||
| Nitzschia dissipata media | 0.7 | 1.0 | ||||
| Nitzschia fonticola | 0.3 | |||||
| Nitzschia frequens | 0.3 | |||||
| Nitzschia frustulum | 490,000 | 0.7 | 1.2 | 140,000 | 1,400 | 3.5 |
| Nitzschia frustulum perminuta | 340,000 | 2.6 | 7.7 | 46,000 | 5,700 | 10.3 |
| Nitzschia frustulum subsalina | 56,000 | 1.3 | 93,000 | 0.7 | ||
| Nitzschia kuetzingiana | 320,000 | 1.3 | 1.8 | 2,800 | 0.7 | |
| Nitzschia linearis tenuis | 37,000 | 0.9 | ||||
| Nitzschia palea | 1.9 | 0.6 | 2,800 | |||
| Nitzschia sociabilis | 37,000 | |||||
| Nitzschia stagnorum | 0.2 | |||||
| Nitzschia subtilis | 75,000 | 0.3 | ||||
| Tryblionella debilis | 37,000 | |||||
| Tryblionella hungarica | 75,000 | 93,000 | ||||
| Rhopalodiales | ||||||
| Rhopalodiaceae | ||||||
| Epithemia sorex | 75,000 | 0.6 | 350,000 | 1,400 | 0.3 | |
| Epithemia turgida | 0.3 | 140,000 | ||||
| Rhopalodia gibba | 37,000 | 230,000 | ||||
| Rhopalodia gibberula | 23,000 | |||||
| Surirellales | ||||||
| Surirellaceae | ||||||
| Cymatopleura solea | 0.3 | 46,000 | ||||
| Surirella angusta | 0.3 | |||||
| Surirella minuta | 0.6 | |||||
| CHLOROPHYTA | ||||||
| Undetermined sp. | 23,000 | 1400 | ||||
| Chlorophyceae | ||||||
| Volvocales | ||||||
| Chlamydomonadaceae | ||||||
| Chlamydomonas sp. | 23,000 | |||||
| Chloroccoales | ||||||
| Oocystaceae | ||||||
| Ankistrodesmus falcatus | 23,000 | 23,000 | ||||
| Scenedesmaceae | ||||||
| Scenedesmus denticulatus | 22,000 | |||||
| Scenedesmus quadricauda | 180,000 | 0.9 | 210,000 | |||