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 8. Algal density in the depositional-targeted habitat at sites on the Carson River: East Fork Carson River near Dresslerville, Nev. (site 1, fig. 1), 1993-96. Habitats sampled were sediments from pools.
[Abbreviations and symbols: cells/cm2, cells per square centimeter; sp. species; <, less than; --, not applicable]
|
Taxon |
Reach A |
Reach B Aug. 30, 1993 (cells/cm2) |
Reach C Aug. 30, 1993 (percent) |
Reach B July 26, 1994 (cells/cm2) |
Reach C Sept. 15, 1995 (percent) |
Reach C Oct. 11, 1996 (cells/cm2) |
|---|---|---|---|---|---|---|
|
Total number of cells (rounded) |
13,000,000 | 22,000,000 | -- | 11,000,000 | -- | 11,000,000 |
| CYANOPHYTA | ||||||
| Cyanophyceae | ||||||
| Chroococcales | ||||||
| Chroococcaceae | ||||||
| Merismopedia tenuissima | 150,000 | |||||
| Nostocales | ||||||
| Nostocaceae | ||||||
| Anabaena affinis | 1,500,000 | |||||
| Anabaena oscillarioides | 1,100,000 | 2.9 | ||||
| Oscillatoriaceaea | ||||||
| Oscillatoria sp. | 16.9 | 5,100,000 | ||||
| Rivulariaceae | ||||||
| Calothrix parietina | 79.0 | |||||
| CRYPTOPHYTA | ||||||
| Cryptophyceae | ||||||
| Cryptomonadales | ||||||
| Cryptomonadaceae | ||||||
| EUGLENOPHYTA | ||||||
| Euglenophyceae | ||||||
| Euglenales | ||||||
| Euglenaceae | ||||||
| Euglena sp. | 66,000 | |||||
| Trachelomonas hispida | 0.3 | |||||
| Cryptomonas sp. | 0.5 | |||||
| BACILLARIOPHYTA | ||||||
| Coscinodiscophyceae | ||||||
| Thalassiosirales | ||||||
| Stephanodiscaceae | ||||||
| Cyclotella meneghiniana | 35,000 | 76,000 | ||||
| Cyclotella pseudostelligera | 18,000 | |||||
| Cyclotella stelligera | 130,000 | 140,000 | 0.2 | 0.3 | ||
| Melosirales | ||||||
| Melosiraceae | ||||||
| Melosira varians | 71,000 | |||||
| Coscinodiscophyceae | ||||||
| Aulacoseirales | ||||||
| Aulacoseiraceae | ||||||
| Aulacoseira italica | 53,000 | 38,000 | ||||
| Fragilariophyceae | ||||||
| Fragilariales | ||||||
| Fragilariaceae | ||||||
| Diatoma mesodon | 1.5 | |||||
| Diatoma vulgare | 64,000 | 0.7 | ||||
| Fragilaria exiguformis | 0.1 | 140,000 | 0.3 | |||
| Fragilaria vaucheriae | 95,000 | 570,000 | 0.1 | 2.7 | ||
| Hannaea arcus | 16,000 | 71,000 | 0.9 | |||
| Hannaea arcus amphioxys | 0.3 | |||||
| Martyana martyi | 140,000 | 0.1 | 200,000 | |||
| Meridion circulare | <0.1 | 0.3 | 13,000 | |||
| Pseudostaurosira brevistriata | 0.3 | |||||
| Fragillaria brevistriata inflata | 0.5 | |||||
| Fragilaria construens pumila | 140,000 | 35,000 | 0.5 | 51,000 | ||
| Staurosira construens venter | 96,000 | 180,000 | <0.1 | 160,000 | 100,000 | |
| Staurosirella leptostauron | 32,000 | 0.2 | ||||
| Staurosirella pinnata | 890,000 | 2,100,000 | 1.5 | 1,300,000 | 0.5 | 250,000 |
| Fragilaria pinnata lancettula | 36,000 | 13,000 | ||||
| Synedra mazamaensis | 350,000 | 930,000 | 0.1 | 71,000 | 57,000 | |
| Synedra minuscula | 110,000 | <0.1 | ||||
| Synedra rumpens | 0.3 | |||||
| Synedra rumpens familiaris | 0.3 | |||||
| Synedra rumpens meneghiniana | 0.3 | |||||
| Synedra ulna | 79,000 | 71,000 | 0.1 | 6,300 | ||
| Synedra ulna danica | 64,000 | |||||
| Synedra ulna oxyrhynchus | 0.5 | |||||
| Cymbellales | ||||||
| Cymbellaceae | ||||||
| Cymbella sp. | 79,000 | 570,000 | ||||
| Cymbella affinis | 1.0 | |||||
| Cymbella hustedii | ||||||
| Cymbella turgidula | 6,300 | |||||
| Encyonema minutum | 110,000 | 0.5 | ||||
| Encyonema silesiacum | 0.2 | 0.8 | ||||
| Navicula exigua capitata | 32,000 | 36,000 | ||||
| Reimeria sinuata | 290,000 | 750,000 | 0.3 | 35,000 | 1.6 | 32,000 |
| Gomphonemataceae | ||||||
| Gomphoneis eriense variabilis | 570,000 | 1.1 | ||||
| Gomphoneis herculeana | 64,000 | 0.1 | 35,000 | 0.3 | 13,000 | |
| Gomphoneis minuta | 71,000 | |||||
| Gomphoneis olivacea | 32,000 | 920,000 | 0.2 | 4.3 | ||
| Gomphonema sp. | 190,000 | 140,000 | <0.1 | 440,000 | 4.6 | |
| Gomphonema affine | 32,000 | |||||
| Gomphonema cf. clevei | 57,000 | |||||
| Gomphonema gracile | 64,000 | |||||
| Gomphonema intricatum | 32,000 | 0.3 | ||||
| Gomphonema parvulum | 64,000 | 36,000 | <0.1 | |||
| Gomphonema subclavatum | 35,000 | 13,000 | ||||
| Rhoicospheniaceae | ||||||
| Rhoicosphenia abbreviata | 470,000 | 71,000 | 0.3 | 350,000 | 2.6 | 51,000 |
| Achnanthales | ||||||
| Achnanthaceae | ||||||
| Lemnicola hungarica | 0.3 | |||||
| Achnanthidiaceae | ||||||
| Achnanthes grana | 38,000 | |||||
| Achnanthes lemmermannii | 250,000 | |||||
| Achnanthes pinnata | 16,000 | 71,000 | ||||
| Achnanthes tenera | 250,000 | <0.1 | ||||
| Achnanthidium biporomum | <0.1 | |||||
| Achnanthidium exiguum | 32,000 | 71,000 | <0.1 | 71,000 | ||
| Achnanthidium exiguum heterovalvum | 0.3 | |||||
| Achnanthidium minutissimum | 1,100,000 | 2,200,000 | 1.0 | 410,000 | 5.4 | 340,000 |
| Planothidium dubium | 79,000 | 570,000 | 0.1 | 570,000 | 0.5 | 25,000 |
| Achanthes hauckiana rostrata | 16,000 | 0.1 | 35,000 | 0.3 | ||
| Planothidium lanceolatum | 210,000 | 210,000 | 0.1 | 120,000 | 2.2 | |
| Cocconeidaceae | ||||||
| Cocconeis pediculus | <0.1 | |||||
| Cocconeis placentula euglypta | 64,000 | 2,000,000 | 0.5 | 140,000 | 0.5 | 100,000 |
| Cocconeis placentula lineata | 650,000 | 180,000 | 0.3 | 0.1 | 13,000 | |
| Naviculales | ||||||
| Amphipleuraceae | ||||||
| Amphipleura pellucida | 36,000 | <0.1 | 19,000 | |||
| Frustulia vulgaris | 140,000 | 0.3 | ||||
| Naviculaceae | ||||||
| Fistulifera pelliculosa | 19,000 | |||||
| Geissleria decussis | 48,000 | 0.2 | 320,000 | 0.1 | 6,300 | |
| Geissleria schoenfeldii | 32,000 | 35,000 | ||||
| Hippodonta capitata | 0.1 | 1.8 | ||||
| Navicula sp. | 29,000 | 0.2 | 320,000 | 150,000 | ||
| Navicula canalis | <0.1 | |||||
| Navicula canoris | 250,000 | 5.3 | ||||
| Navicula cari | 350,000 | |||||
| Navicula cincta | 71,000 | |||||
| Navicula cincta rostrata | 0.3 | |||||
| Navicula clementis | 0.5 | |||||
| Navicula cryptocephala | 71,000 | 35,000 | ||||
| Navicula cryptocephala veneta | 64,000 | <0.1 | 71,000 | 38,000 | ||
| Navicula graciloides | 32,000 | 0.1 | ||||
| Navicula gregaria | 140,000 | 0.1 | 110,000 | 1.0 | 210,000 | |
| Navicula lanceolata | 0.3 | |||||
| Navicula menisculus | 130,000 | 210,000 | 0.2 | 71,000 | 51,000 | |
| Navicula minima | 64,000 | 210,000 | 0.3 | 110,000 | 32,000 | |
| Navicula ochridana | <0.1 | |||||
| Navicula paucivisitata | 13,000 | |||||
| Navicula perminuta | 32,000 | |||||
| Navicula protracta | 35,000 | |||||
| Navicula radiosa | 13,000 | |||||
| Navicula radiosa tenella | 71,000 | |||||
| Navicula rhynchocephala | 32,000 | <0.1 | 0.3 | |||
| Navicula rhynchocephala germainii | 89,000 | 2.2 | 44,000 | |||
| Navicula salinarum intermedia | 490,000 | 570,000 | 0.7 | 430,000 | 190,000 | |
| Navicula secreta apiculata | 480,000 | 140,000 | 0.7 | 140,000 | 6.1 | 51,000 |
| Navicula symmetrica | 0.3 | |||||
| Navicula tantula | 71,000 | 6,300 | ||||
| Navicula tripunctata | 18,000 | 0.3 | ||||
| Navicula viridula linearis | 6,300 | |||||
| Neidiaceae | ||||||
| Neidium affine | 0.7 | |||||
| Neidium dubium | 35,000 | 0.5 | 63,000 | |||
| Pinnulariaceae | ||||||
| Caloneis bacillum | 64,000 | 71,000 | 110,000 | 38,000 | ||
| Caloneis lewisii | 71,000 | |||||
| Caloneis ventricosa truncatula | 71,000 | |||||
| Pinnularia nodosa | 0.1 | |||||
| Sellaphoraceae | ||||||
| Fallacia pygmaea | 13,000 | |||||
| Sellaphora bacillum | 71,000 | |||||
| Sellaphora laevissima | 0.3 | |||||
| Sellaphora mutata | 71,000 | |||||
| Sellaphora pupula | 95,000 | <0.1 | 300,000 | 19.6 | 150,000 | |
| Sellaphora pupula rectangularis | 32,000 | 0.2 | 71,000 | 1.1 | ||
| Sellaphora seminulum | 13,000 | |||||
| Thalassiophysales | ||||||
| Catenulaceae | ||||||
| Amphora ocellata | <0.1 | |||||
| Amphora perpusilla | 32,000 | 140,000 | 38,000 | |||
| Bacillariales | ||||||
| Bacillariaceae | ||||||
| Hantzschia amphioxys | 71,000 | |||||
| Nitzschia acicularis | 32,000 | <0.1 | 160,000 | |||
| Nitzschia capitellata | 6,300 | |||||
| Nitzschia dissipata | 95,000 | 250,000 | 0.3 | 3.3 | 13,000 | |
| Nitzschia dissipata media | 71,000 | <0.1 | 18,000 | 0.3 | 6,400 | |
| Nitzschia frustulum | 370,000 | 280,000 | 0.5 | 900,000 | 0.7 | 300,000 |
| Nitzschia frustulum perminuta | 590,000 | 710,000 | 0.6 | 570,000 | 0.4 | 25,000 |
| Nitzschia frustulum subsalina | 430,000 | 120,000 | 0.7 | 76,000 | ||
| Nitzschia kuetzingiana | 540,000 | 1,800,000 | 0.3 | 110,000 | 1.5 | 240,000 |
| Nitzschia linearis tenuis | 71,000 | 0.3 | ||||
| Nitzschia palea | 64,000 | 71,000 | 0.1 | 35,000 | 51,000 | |
| Nitzschia romana | 0.1 | 13,000 | ||||
| Nitzschia subtilis | 25,000 | |||||
| Rhopalodiales | ||||||
| Rhopalodiaceae | ||||||
| Epithemia adnata | 13,000 | |||||
| Epithemia sorex | 790,000 | 1,500,000 | 0.6 | 1,500,000 | 1.6 | 340,000 |
| Epithemia turgida | 35,000 | |||||
| Rhopalodia gibba | 64,000 | 430,000 | <0.1 | 180,000 | ||
| Rhopalodia gibba ventricosa | 71,000 | |||||
| Rhopalodia gibberula | 32,000 | 0.1 | ||||
| Surirellales | ||||||
| Surirellaceae | ||||||
| Cymatopleura solea | 13,000 | |||||
| Surirella minuta | 13,000 | |||||
| CHLOROPHYTA | ||||||
| Chlorophyceae | ||||||
| Chlorococcales | ||||||
| Oocystaceae | ||||||
| Ankistrodesmus falcatus | <0.1 | 93,000 | 0.3 | 26,000 | ||
| Scenedesmaceae | ||||||
| Scenedesmus acutus | 140,000 | |||||
| Scenedesmus denticulatus | 140,000 | |||||
| Scenedesmus ecornis | 120,000 | |||||
| Scenedesmus quadricauda | 250,000 | 140,000 | ||||
| Scenedesmus spinosus | 0.2 | |||||
| Chaetophorales | ||||||
| Chaetophoraceae | ||||||
| Stigeoclonium lubricum | 2,200,000 | 1 | ||||
| Zygnematales | ||||||
| Desmidiaceae | ||||||
| Cosmarium subcrenatum | 60,000 |