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 12. Algal density in depositional-targeted habitat at sites on the Carson River: Carson River near Fort Churchill, Nev. (site 9, fig. 1), 1993-96. Habitats sampled were sediments in pools.
[Abbreviations and symbols: cells/cm2, cells per square centimeter; sp., species; --, not applicable]
|
Taxon |
Reach A, Sept. 13, 1993 (cells/cm2) |
Reach B, Sept. 13, 1993 (cells/cm2) |
Reach C, Sept. 20, 1993 (cells/cm2) |
Reach B, |
Reach B, |
Reach B, |
|---|---|---|---|---|---|---|
|
Total number of cells (rounded) |
18,000,000 | 12,000,000 | 13,000,000 | 4,200,000 |
-- |
22,000,000 |
| CYANOPHYTA | ||||||
| Undetermined species | 4,600 | 0.2 | ||||
| Cyanophyceae | ||||||
| Chroococcales | ||||||
| Chroococcaceae | ||||||
| Dactylococcopsis rhaphidioides | 14,000 | 0.2 | ||||
| Gomphosphaeria lacustris | 4.3 | |||||
| Merismopedia glauca | 320,000 | |||||
| Merismopedia tenuissima | 330,000 | 170,000 | 130,000 | 66,000 | ||
| Nostocales | ||||||
| Nostocaceae | ||||||
| Anabaena sp. | 350,000 | 0.9 | ||||
| Anabaena oscillarioides | 2,800,000 | 1,800,000 | 1,800,000 | 3,900,000 | ||
| Cylindrospermum minutum | 690,000 | |||||
| Oscillatoriaceae | ||||||
| Lyngbya sp. | 5,500,000 | 2,000,000 | 4,500,000 | |||
| Oscillatoria sp. | 1,700,000 | 240,000 | 2.1 | 3,800,000 | ||
| Schizothrix friesii | 680,000 | |||||
| EUGLENOPHYTA | ||||||
| Euglenophyceae | ||||||
| Euglenales | ||||||
| Euglenacea | ||||||
| Euglena sp. | 10,000 | 0.2 | ||||
| Phacus sp. | 22,000 | |||||
| BACILLARIOPHYTA | ||||||
| Coscinodiscophyceae | ||||||
| Thalassiosirales | ||||||
| Stephanodiscaceae | ||||||
| Cyclostephanos invisitatus | 170,000 | |||||
| Cyclotella atomus | 42,000 | |||||
| Cyclotella meneghiniana | 110,000 | 130,000 | 61,000 | 8,400 | 1.4 | 42,000 |
| Thalassiosiraceae | ||||||
| Thalassiosira weissflogii | 8,400 | |||||
| Triceratiales | ||||||
| Triceratiaceae | ||||||
| Pleurosira laevis | 10,000 | |||||
| Fragilariophyceae | ||||||
| Fragilariales | ||||||
| Fragilariaceae | ||||||
| Diatoma vulgare | 23,000 | 62,000 | ||||
| Fragilaria exiguiformis | 160,000 | 91,000 | 180,000 | 450,000 | 620,000 | |
| Fragilaria vaucheriae | 52,000 | 170,000 | ||||
| Pseudostaurosira brevistriata | 7.2 | 960,000 | ||||
| Fragilaria brevistriata inflata | 1,800,000 | |||||
| Staurosira construens | 26,000 | 21,000 | ||||
| Fragilaria construens pumila | 72,000 | 2.3 | 330,000 | |||
| Fragilaria construens subsalina | 230,000 | 520,000 | 470,000 | |||
| Staurosira construens binodis | 900,000 | 270,000 | 220,000 | 72,000 | 0.6 | 83,000 |
| Staurosira construens venter | 770,000 | 1,200,000 | 1,400,000 | 300,000 | 9.6 | 120,000 |
| Staurosirella leptostauron | 26,000 | |||||
| Staurosirella pinnata | 1,300,000 | 2,100,000 | 2,000,000 | 620,000 | 14.1 | 1,700,000 |
| Synedra mazamaensis | 26,000 | |||||
| Synedra rumpens familiaris | 42,000 | |||||
| Synedra ulna | 0.3 | 21,000 | ||||
| Bacillariophyceae | ||||||
| Cymbellales | ||||||
| Cymbellaceae | ||||||
| Cymbella affinis | 1.4 | 42,000 | ||||
| Encyonema minutum | 8,400 | |||||
| Reimeria sinuata | 23,000 | 21,000 | 2.9 | 21,000 | ||
| Reimeria sinuata antiqua | 0.3 | |||||
| Gomphonemataceae | ||||||
| Gomphoneis olivacea | 23,000 | |||||
| Gomphonema sp. | 78,000 | 20,000 | 0.3 | |||
| Gomphonema cf clevei | 330,000 | |||||
| Gomphonema intricatum | 0.3 | |||||
| Gomphonema parvulum | 23,000 | 52,000 | ||||
| Gomphonema truncatum capitatum | 52,000 | 20,000 | 8,400 | |||
| Rhoicospheniaceae | ||||||
| Rhoicosphenia abbreviata | 26,000 | 41,000 | 8.3 | 83,000 | ||
| Achnanthales | ||||||
| Achnanthaceae | ||||||
| Lemnicola hungarica | 0.3 | |||||
| Achnanthidiaceae | ||||||
| Achnanthes grana | 21,000 | |||||
| Achnanthidium exiguum | 68,000 | 130,000 | ||||
| Achnanthidium exiguum heterovalvum | 21,000 | |||||
| Achnanthidium minutissimum | 26,000 | 170,000 | ||||
| Planothidium dubium | 45,000 | 78,000 | 170,000 | 42,000 | 150,000 | |
| Achnanthes hauckiana rostrata | 79,000 | 52,000 | 120,000 | |||
| Planothidium lanceolatum | 26,000 | 8,400 | 0.3 | 42,000 | ||
| Cocconeidaceae | ||||||
| Cocconeis pediculus | 34,000 | 130,000 | 41,000 | 0.4 | 42,000 | |
| Cocconeis placentula euglypta | 160,000 | 61,000 | 13,000 | 5.4 | 230,000 | |
| Cocconeis placentula lineata | 26,000 | 21,000 | ||||
| Naviculales | ||||||
| Naviculaceae | ||||||
| Fistulifera pelliculosa | 23,000 | |||||
| Geissleria decussis | 23,000 | 180,000 | 20,000 | 17,000 | 83,000 | |
| Hippodonta capitata | 23,000 | 8,400 | ||||
| Navicula canalis | 26,000 | 10,000 | 83,000 | |||
| Navicula capitata | 42,000 | |||||
| Navicula cincta rostrata | 26,000 | 0.3 | 42,000 | |||
| Navicula cryptocephala | 42,000 | |||||
| Navicula cryptocephala veneta | 23,000 | 20,000 | 0.3 | |||
| Navicula graciloides | 23,000 | 20,000 | ||||
| Navicula gregaria | 23,000 | 130,000 | 61,000 | 0.6 | 120,000 | |
| Navicula luzonensis | 20,000 | |||||
| Navicula minima | 26,000 | 8,400 | 0.3 | |||
| Navicula paucivisitata | 20,000 | |||||
| Navicula rhynchocephala germainii | 110,000 | 400,000 | 120,000 | 38,000 | 8.0 | 290,000 |
| Navicula salinarum intermedia | 90,000 | 26,000 | 61,000 | 1.4 | 145,000 | |
| Navicula secreta apiculata | 140,000 | 310,000 | 20,000 | 17,000 | 2.3 | 170,000 |
| Navicula symmetrica | 23,000 | |||||
| Navicula tripunctata schizonemoides | 23,000 | 41,000 | 8,400 | 83,000 | ||
| Navicula viridula rostellata | 400,000 | 450,000 | 81,000 | |||
| Neidiaceae | ||||||
| Neidium dubium | 52,000 | 10,000 | 0.6 | |||
| Pinnulariaceae | ||||||
| Caloneis amphisbaena | 26,000 | 10,000 | ||||
| Caloneis bacillum | 42,000 | |||||
| Caloneis lewisii | 52,000 | 41,000 | ||||
| Caloneis ventricosa truncatula | 120,000 | 180,000 | 91,000 | 0.6 | 42,000 | |
| Sellaphoraceae | ||||||
| Sellaphora pupula | 23,000 | 100,000 | 17,000 | 0.6 | 83,000 | |
| Sellaphora pupula rectangularis | 23,000 | |||||
| Stauroneidaceae | ||||||
| Craticula cuspidata | 23,000 | 8,400 | ||||
| Thalassiophysales | ||||||
| Catenulaceae | ||||||
| Amphora ovalis | 20,000 | |||||
| Bacillariales | ||||||
| Bacillariaceae | ||||||
| Denticula elegans | 1.7 | |||||
| Nitzschia accommodata | 45,000 | |||||
| Nitzschia amphibia | 26,000 | |||||
| Nitzschia constricta | 0.6 | 120,000 | ||||
| Nitzschia dissipata | 23,000 | 20,000 | 1.2 | 42,000 | ||
| Nitzschia frequens | 23,000 | |||||
| Nitzschia frustulum | 450,000 | 25,000 | 150,000 | |||
| Nitzschia frustulum perminuta | 79,000 | 52,000 | 20,000 | 25,000 | 1.2 | 230,000 |
| Nitzschia frustulum subsalina | 820,000 | 130,000 | 320,000 | 630,000 | 1.2 | 250,000 |
| Nitzschia kuetzingiana | 110,000 | 160,000 | 120,000 | 30,000 | 0.9 | 190,000 |
| Nitzschia palea | 45,000 | 30,000 | 2.5 | 21,000 | ||
| Nitzschia reversa | 8,400 | |||||
| Nitzschia romana | 100,000 | |||||
| Nitzschia subtilis | 23,000 | 8,400 | ||||
| Nitzschia tryblionella maxima | 23,000 | |||||
| Tryblionella hungarica | 41,000 | 17,000 | ||||
| Tryblionella levidensis | 0.1 | |||||
| Rhopalodiales | ||||||
| Rhopalodiaceae | ||||||
| Epithemia sorex | 180,000 | 26,000 | 41,000 | 17,000 | 6.4 | 770,000 |
| Rhopalodia gibba | 11,000 | 52,000 | 81,000 | 120,000 | ||
| Rhopalodia gibba ventricosa | 21,000 | 0.3 | ||||
| Rhopalodia gibberula | 77,000 | 20,000 | 8,400 | 170,000 | ||
| Surirellales | ||||||
| Surirellaceae | ||||||
| Cymatopleura solea | 20,000 | 0.4 | 42,000 | |||
| Surirella angusta | 45,000 | 20,000 | ||||
| Surirella suecica | 23,000 | 8,400 | 0.3 | |||
| CHLOROPHYTA | ||||||
| Undetermined species | 4,600 | |||||
| Chlorophyceae | ||||||
| Volvocales | ||||||
| Chlamydonadaceae | ||||||
| Chlamydomanas sp. | 20,000 | 25,000 | ||||
| Chlorococcales | ||||||
| Hydrodictyaceae | ||||||
| Pediastrum duplex | 330,000 | 170,000 | ||||
| Oocystaceae | ||||||
| Ankistrodesmus falcatus | 10,000 | 9,100 | 1.2 | |||
| Kirchneriella lunaris | 14,000 | 0.2 | ||||
| Scenedesmaceae | ||||||
| Scenedesmus acutus | 2.5 | |||||
| Scenedesmus dimorphus | 82,000 | 34,000 | 0.6 | |||
| Scenedesmus quadricauda | 82,000 | 0.8 | 600,000 | |||
| Charophyceae | ||||||
| Zygnematales | ||||||
| Desmidiaceae | ||||||
| Closterium moniliferum | 10,000 | |||||
| Cosmarium subcrenatum | 21,000 |