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 7. Algal density in richest-targeted habitat at sites on the Carson River: Carson River near Fort Churchill, Nev. (site 9, fig. 1), 1993-96. Habitats sampled were submerged woody snags.
[Abbreviations: cells/cm2, cells per square centimeter; sp., species]
|
Taxon |
Reach A, Sept. 13, 1993 (cells/cm2) |
Reach B, Sept. 13, 1993 (cells/cm2) |
Reach C, Sept. 20, 1993 (cells/cm2) |
Reach B, July 12, 1994 (cells/cm2) |
Reach B, Sept. 28, 1995 (cells/cm2) |
Reach B, Oct. 10, 1996 (cells/cm2) |
|---|---|---|---|---|---|---|
| Total number of cells (rounded) | 2,200,000 | 1,800,000 | 1,000,000 | 14,000,000 | 1,800,000 | 4,000,000 |
| CYANOPHYTA | ||||||
| Undetermined species | 170,000 | |||||
| Cyanophyceae | ||||||
| Chroococcales | ||||||
| Chroococcaceae | ||||||
| Dactylococcopsis rhaphidioides | 13,000 | 3,100 | ||||
| Gomphosphaeria aponina | 360,000 | |||||
| Merismopedia tenuissima | 390,000 | |||||
| Nostocales | ||||||
| Nostocaceae | ||||||
| Anabaena sp. | 2,600,000 | 150,000 | ||||
| Anabaena affinis | 110,000 | |||||
| Anabaena oscillarioides | 550,000 | 640,000 | 420,000 | 130,000 | ||
| Cylindrospermum minutum | 460,000 | |||||
| Oscillatoriaceae | ||||||
| Lyngbya sp. | 810,000 | 710,000 | 270,000 | 280,000 | 160,000 | |
| Oscillatoria sp. | 410,000 | 7,500,000 | 360,000 | 900,000 | ||
| Melosirales | ||||||
| Melosiraceae | ||||||
| Melosira varians | 6,200 | |||||
| Fragilariophyceae | ||||||
| Fragilariales | ||||||
| Fragilariaceae | ||||||
| Diatoma vulgare | 3,100 | 17,000 | 12,000 | |||
| Fragilaria exiguiformis | 6,600 | 99,000 | ||||
| Fragilaria vaucheriae | 2,700 | 1,000 | ||||
| Pseudostaurosira brevistriata | 62,000 | 150,000 | ||||
| Peudostaurosira brevistriata inflata | 15,000 | 6,000 | ||||
| Rivulariaceae | ||||||
| Calothrix sp. | 79,000 | |||||
| Calothrix parietina | 93,000 | 19,000 | 630,000 | |||
| CRYPTOPHYTA | ||||||
| Undetermined sp. | 6,600 | |||||
| EUGLENOPHYTA | ||||||
| Euglenophyceae | ||||||
| Euglenales | ||||||
| Euglenaceae | ||||||
| Euglena sp. | 4,200 | |||||
| Trachelomonas sp. | 1,200 | |||||
| Trachelomonas volvocina | 13,000 | |||||
| BACILLARIOPHYTA | ||||||
| Coscinodiscophyceae | ||||||
| Thalassiosirales | ||||||
| Stephanodiscaceae | ||||||
| Cyclotella invisitatus | 36,000 | |||||
| Cyclotella meneghiniana | 670 | 970 | 1,500 | 18,000 | ||
| Staurosira construens | 1,000 | 6,200 | 3,000 | |||
| Fragilaria construens pumila | 12,000 | 47,000 | 33,000 | |||
| Staurosira construens binodis | 27,000 | 8,700 | 2,000 | 100,000 | 15,000 | |
| Staurosira construens venter | 4,700 | 2,400 | 9,200 | 400,000 | 27,000 | 280,000 |
| Staurosirella leptostauron | 1,300 | |||||
| Staurosirella pinnata | 67,000 | 77,000 | 13,000 | 510,000 | 35,000 | 250,000 |
| Synedra ulna | 1,500 | 16,000 | 4,500 | |||
| Synedra ulna oxyrhynchus | 3,100 | |||||
| Bacillariophyceae | ||||||
| Cymbellales | ||||||
| Cynbellaceae | ||||||
| Cymbella affinis | 970 | 1,000 | 30,000 | 69,000 | ||
| Cymbella tumida | 1,300 | |||||
| Encyonema minutum | 6,200 | |||||
| Reimeria sinuata | 1,300 | 970 | 1,000 | 24,000 | ||
| Reimeria sinuata antiqua | 19,000 | |||||
| Gomphonemataceae | ||||||
| Gomphoneis herculeana | 1,500 | |||||
| Gomphoneis olivacea | 2,000 | 3,100 | 12,000 | |||
| Gomphonema sp. | 45,000 | 970 | 7,700 | 56,000 | 30,000 | |
| Gomphonema angustatum intermedia | 1,300 | |||||
| Gomphonema cf. clevei | 9,000 | |||||
| Gomphonema grunowii | 1,300 | |||||
| Gomphonema intricatum | 4,500 | |||||
| Gomphonema parvulum | 1,300 | 970 | 9,300 | 1,500 | ||
| Gomphonema subclavatum | 490 | 510 | 3,000 | 6,000 | ||
| Gomphonema truncatum | 1,000 | |||||
| Gomphonema truncatum capitatum | 1,300 | 4,400 | 2,000 | 3,100 | ||
| Rhoicospheniaceae | ||||||
| Rhoicosphenia abbreviata | 44,000 | 2,400 | 19,000 | 40,000 | 81,000 | 57,000 |
| Achanthales | ||||||
| Achnanthidiaceae | ||||||
| Achnanthidium exiguum | 1,300 | 9,300 | ||||
| Achnanthidium exiguum heterovalvum | 9,300 | |||||
| Achnanthidium minutissimum | 25,000 | 24,000 | ||||
| Planothidium dubium | 670 | |||||
| Achnanthes hauckiana rostrata | 1,500 | 6,000 | ||||
| Planothidium lanceolatum | 510 | |||||
| Cocconeidaceae | ||||||
| Cocconeis pediculus | 2,700 | 1,500 | 6,200 | 1,500 | 3,000 | |
| Cocconeis placentula euglypta | 4,700 | 490 | 21,000 | 9,300 | 18,000 | 36,000 |
| Cocconeis placentula lineata | 3,100 | |||||
| Naviculales | ||||||
| Diadesmidaceae | ||||||
| Luticola cohnii | 3,100 | |||||
| Diploneidaceae | ||||||
| Diploneis smithii | 6,200 | |||||
| Naviculaceae | ||||||
| Geissleria decussis | 970 | 6,200 | 6,000 | |||
| Hippodonta capitata | 510 | 3,100 | ||||
| Navicula sp. | 1,500 | |||||
| Navicula canalis | 12,000 | |||||
| Navicula cincta rostrata | 510 | 3,100 | 4,500 | 24,000 | ||
| Navicula convergens | 670 | |||||
| Navicula cryptocephala veneta | 510 | 3,000 | ||||
| Navicula detenta | 6,200 | |||||
| Navicula graciloides | 970 | 2,000 | ||||
| Navicula gregaria | 6,200 | 21,000 | ||||
| Navicula minima | 6,200 | |||||
| Navicula rhynchocephala germainii | 4,000 | 16,000 | 6,000 | 15,000 | ||
| Navicula salinarum intermedia | 1,300 | 970 | 510 | 6,200 | 6,000 | 15,000 |
| Navicula secreta apiculata | 2,700 | 1,000 | 9,000 | 6,000 | ||
| Navicula symmetrica | 6,000 | |||||
| Navicula tantula | 510 | 3,100 | ||||
| Navicula tripunctata | 970 | 2,000 | 16,000 | 1,500 | 6,000 | |
| Navicula tripunctata schizonemoides | 4,000 | 510 | 3,000 | 9,000 | ||
| Navicula viridula rostellata | 8,000 | 1900 | ||||
| Neidiaceae | ||||||
| Neidium dubium | 1,300 | 510 | 6,200 | |||
| Pinnulariaceae | ||||||
| Caloneis bacillum | 3,100 | 3,000 | 6,000 | |||
| Caloneis lewisii | 1,000 | 3,000 | ||||
| Caloneis ventricosa truncatula | 6,000 | 2,400 | 1,500 | |||
| Sellaphoraceae | ||||||
| Sellaphora bacillum | 9,300 | |||||
| Sellaphora mutata | 1,000 | |||||
| Sellaphora pupula | 490 | 16,000 | 1,500 | |||
| Catenulaceae | ||||||
| Amphora ovalis pendiculus | 60,000 | |||||
| Amphora perpusilla | 490 | |||||
| Amphora veneta | 1,300 | |||||
| Bacillarales | ||||||
| Bacillariaceae | ||||||
| Nitzschia amphibia | 970 | 1,000 | ||||
| Nitzschia bacata | 3,000 | |||||
| Nitzschia constricta | 9,000 | |||||
| Nitzschia dissipata | 2,600 | 9,000 | ||||
| Nitzschia filiformis | 3,000 | |||||
| Nitzschia frustulum | 2,000 | 9,300 | 27,000 | |||
| Nitzschia frustulum perminuta | 1,300 | 510 | 16,000 | 3,000 | 3,000 | |
| Nitzschia frustulum subsalina | 3,100 | 27,000 | ||||
| Nitzschia kuetzingiana | 3,000 | 36,000 | ||||
| Nitzschia linearis | 1,500 | |||||
| Nitzschia palea | 1,300 | 3,000 | ||||
| Nitzschia subtilis | 3,000 | |||||
| Tryblionella hungarica | 670 | 510 | 12,000 | 6,000 | ||
| Rhopalodiales | ||||||
| Rhopalodiaceae | ||||||
| Epithemia sorex | 130,000 | 170,000 | 170,000 | 300,000 | 430,000 | 400,000 |
| Epithemia turgida | 2,700 | 2,900 | 6,600 | |||
| Rhopalodia gibba | 5,300 | 970 | 20,000 | 25,000 | 9,000 | 51,000 |
| Rhopalodia gibba ventricosa | 31,000 | 11,000 | ||||
| Rhopalodia gibberula | 4,000 | 3,400 | 10,000 | 16,000 | 36,000 | 12,000 |
| Surirellaceae | ||||||
| Cymatopleura solea | 1,300 | |||||
| CHLOROPHYTA | ||||||
| Undetermined species | 63,000 | 6,100 | ||||
| Chlorophyceae | ||||||
| Chlorococcales | ||||||
| Hydrodictyaceae | ||||||
| Pediastrum duplex | 19,000 | 49,000 | ||||
| Oocystaceae | ||||||
| Ankistrodesmus falcatus | 1,200 | 9,200 | 130,000 | 18,000 | 25,000 | |
| Kirchneriella lunaris | 20,000 | |||||
| Scenedesmaceae | ||||||
| Scenedesmus acutus | 20,000 | |||||
| Scenedesmus dimorphus | 10,000 | |||||
| Scenedesmus ecornis | 6,100 | |||||
| Scenedesmus quadricauda | 9,400 | 53,000 | 70,000 | |||
| Microsporales | ||||||
| Microsporaceae | ||||||
| Microspora stagnorum | 5,500 | |||||
| Chaetophorales | ||||||
| Chaetophoraceae | ||||||
| Stigeoclonium lubricum | 11,000 | |||||
| Charophyceae | ||||||
| Zygnemateles | ||||||
| Desmidiaceae | ||||||
| Cosivarium subcreanatum | 4,200 | |||||
| Staurastrum punctulatum | 3,000 |