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 6. Algal density in richest-targeted habitat at sites on the Carson River: Carson River at Deer Run Road near Carson City, Nev. (site 7, fig. 1) and Carson River at Dayton, Nev. (site 8, fig. 1), 1993-95. Habitats at sampling sites were cobble riffles.
[Abbreviations: cells/cm2, cells per square centimeter; sp., species]
|
Taxon |
Site 7 |
Site 8 |
|||
|---|---|---|---|---|---|
| Sept. 8, 1993 (cells/cm2) |
July 15, 1994 (cells/cm2) |
Sept. 12, 1995 (cells/cm2) |
July 14, 1994 |
Sept. 19, 1995 |
|
| Total number of cells (rounded) | 6,100,000 | 3,600,000 | 7,100,000 | 15,000,000 | 6,500,000 |
| CYANOPHYTA | |||||
| Undetermined species | 28,000 | 170,000 | 13,000 | ||
| Cyanophyceae | |||||
| Chroococcales | |||||
| Chroococcaceae | |||||
| Dactylococcopsis rhaphidioides | 4,000 | 21,000 | 6,700 | ||
| Chamaesiphonales | |||||
| Chamaesiphonaceae | |||||
| Chamaesiphon incrustans | 6,700 | ||||
| Nostocales | |||||
| Nostocaceae | |||||
| Anabaena sp. | 69,000 | 13,000 | 1,600,000 | ||
| Anabaena oscillarioides | 290,000 | ||||
| Oscillatoriaceae | |||||
| Lyngbya sp. | 820,000 | 1,200,000 | 740,000 | 790,000 | |
| Oscillatoria sp. | 440,000 | 2,000,000 | 740,000 | 860,000 | |
| Rivulariaceae | |||||
| Calothrix sp. | 240,000 | 3,300,000 | 4,300,000 | 2,800,000 | |
| Calothrix parietina | 3,200,000 | ||||
| RHODOPHYTA | |||||
| Florideophyceae | |||||
| Nemaliales | |||||
| Acrochaetiaceae | |||||
| Audouinella hermanii | 14,000 | ||||
| EUGLENOPHYTA | |||||
| Euglenophyceae | |||||
| Euglenales | |||||
| Euglenaceae | |||||
| Euglena sp. | 4,000 | ||||
| Trachelomonas hispida | 6,700 | ||||
| BACILLARIOPHYTA | |||||
| Coscinodiscophyceae | |||||
| Thalassiosirales | |||||
| Stephanodiscaceae | |||||
| Cyclotella meneghiniana | 32,000 | ||||
| Melosirales | |||||
| Melosiraceae | |||||
| Melosira varians | 4,340 | 17,000 | 4,000 | 39,000 | 2,600 |
| Aulacoseirales | |||||
| Aulacoseiraceae | |||||
| Aulacoseira ambigua | 2,900 | 1,600 | |||
| Aulacoseira italica | 810 | ||||
| Aulacoseira italica tenuissima | 5,700 | ||||
| Triceratiales | |||||
| Triceratiaceae | |||||
| Pleurosira laevis | 810 | ||||
| Fragilariophyceae | |||||
| Fragilariales | |||||
| Fragilariaceae | |||||
| Ctenophora pulchella | 2,900 | ||||
| Diatoma vulgare | 4,400 | 26,000 | 3,200 | ||
| Fragilaria exiguiformis | 8,600 | 810 | |||
| Fragilaria vaucheriae | 2,900 | 3,200 | |||
| Pseudostaurosira brevistriata | 29,000 | 7,800 | |||
| Fragilaria brevistriata inflata | 4,000 | ||||
| Staurosira construens | 1,600 | 9,800 | |||
| Fragilaria construens pumila | 18,000 | 23,000 | 11,000 | 16,000 | |
| Fragilaria construens subsalina | 89,000 | ||||
| Staurosira construens binodis | 58,000 | 180,000 | 7,200 | 10,000 | |
| Staurosira construens venter | 120,000 | 160,000 | 37,000 | 37,000 | |
| Staurosirella pinnata | 1,700,000 | 340,000 | 20,000 | 49,000 | 10,000 |
| Synedra delicatissima angustissima | 9,800 | ||||
| Synedra ulna | 18,000 | 20,000 | 32,000 | 39,000 | |
| Cymbellales | |||||
| Cynbellaceae | |||||
| Cymbella sp. | 1,600 | ||||
| Cymbella affinis | 4,500 | 2,900 | 5,600 | 44,000 | |
| Cymbella mexicana | 2,600 | ||||
| Cymbella tumida | 8,900 | ||||
| Encyonema minutum | 8,600 | 9,180 | |||
| Encyonema silesiacum | 2,900 | ||||
| Reimeria sinuata | 2,900 | 15,000 | 9,800 | 5,200 | |
| Reimeria sinuata antiqua | 8,600 | 15,000 | |||
| Gomphonemataceae | |||||
| Gomphoneis eriense variabilis | 810 | ||||
| Gomphoneis olivacea | 2,900 | 1,600 | 9,800 | ||
| Gomphonema angustatum | 810 | ||||
| Gomphonema intricatum | 4,000 | 2,600 | |||
| Gomphonema parvulum | 5,700 | 29,000 | 2,600 | ||
| Gomphonema subtile | 810 | ||||
| Gomphonema truncatum capitatum | 11,000 | 20,000 | |||
| Rhoicospheniaceae | |||||
| Rhoicosphenia abbreviata | 98,000 | 320,000 | 6,400 | 800,000 | 84,000 |
| Achanthales | |||||
| Achnanthidiaceae | |||||
| Achnanthidium exiguum | 810 | ||||
| Planothidium dubium | 17,000 | 8,000 | 2,600 | ||
| Planothidium lanceolatum | 810 | 2,600 | |||
| Cocconeidaceae | |||||
| Cocconeis pediculus | 13,000 | 77,000 | 77,000 | 29,000 | 110,000 |
| Cocconeis placentula euglypta | 8,900 | 52,000 | 17,000 | 120,000 | |
| Cocconeis placentula lineata | 5,700 | 3,200 | |||
| Naviculales | |||||
| Diadesmidaceae | |||||
| Luticola cohnii | 2,900 | 2,400 | |||
| Naviculaceae | |||||
| Hippodonta capitata | 1,600 | ||||
| Navicula sp. | 17,000 | 2,600 | |||
| Navicula clementioides | 2,900 | ||||
| Navicula salinarum intermedia | 160,000 | 810 | 9,800 | 7,800 | |
| Navicula tripunctata | 34,000 | 10,000 | 9,800 | 13,000 | |
| Navicula tripunctata schizonemoides | 2,900 | ||||
| Navicula viridula avenacea | 810 | ||||
| Pinnulariaceae | |||||
| Caloneis lewisii | 8,900 | 2,600 | |||
| Caloneis ventricosa truncatula | 1,600 | ||||
| Pinnularia obscura | 1,800 | ||||
| Pleurosigmataceae | |||||
| Gyrosigma nodiferum | 890 | ||||
| Sellaphoraceae | |||||
| Sellaphora pupula | 4,500 | ||||
| Stauroneidaceae | |||||
| Stauroneis smithii | 8,900 | ||||
| Thalassiosirales | |||||
| Catenulaceae | |||||
| Amphora ovalis pediculus | 2,900 | 810 | 9,800 | ||
| Bacillarales | |||||
| Bacillariaceae | |||||
| Denticula elegans | 1,600 | ||||
| Hantzschia amphioxys | 1,600 | ||||
| Nitzschia amphibia | 4,500 | 2,900 | 29,000 | 5,200 | |
| Nitzschia dissipata | 2,400 | ||||
| Nitzschia frustulum | 18,000 | 23,000 | 9,800 | ||
| Nitzschia frustulum perminuta | 5,700 | 2,400 | 2,600 | ||
| Nitzschia frustulum subsalina | 2,900 | 4,000 | |||
| Nitzschia kuetzingiana | 2,900 | 1,600 | 9,800 | ||
| Nitzschia linearis tenuis | 9,800 | ||||
| Nitzschia subtilis | 2,900 | ||||
| Nitzschia tropica | 2,900 | ||||
| Rhopalodiales | |||||
| Rhopalodiaceae | |||||
| Epithemia adnata | 9,100 | ||||
| Epithemia sorex | 490,000 | 83,000 | 97,000 | 4,600,000 | 1,000,000 |
| Epithemia turgida | 18,000 | 3,200 | 39,000 | 42,000 | |
| Rhopalodia gibba | 810 | ||||
| Rhopalodia gibba ventricosa | 3,200 | 9,800 | 2,600 | ||
| Rhopalodia gibberula | 2,400 | ||||
| CHLOROPHYTA | |||||
| Undetermined species | 12,000 | 6,000 | 260,000 | 13,000 | |
| Chlorophyceae | |||||
| Chlorococcales | |||||
| Chlorococcaceae | |||||
| Tetraedron minimum | 6,700 | ||||
| Hydrodictyaceae | |||||
| Pediastrum boryanum | 300,000 | ||||
| Pediastrum duplex | 470,000 | ||||
| Micractiniaceae | |||||
| Micractinium pusillum | 36,000 | ||||
| Oocystaceae | |||||
| Ankistrodesmus falcatus | 12,000 | 40,000 | |||
| Kirchneriella lunaris | 13,000 | ||||
| Scenedesmaceae | |||||
| Scenedesmus bijuga | 16,000 | ||||
| Scenedesmus dimorphus | 85,000 | 22,000 | |||
| Scenedesmus quadricauda | 32,000 | ||||
| Chaetophorales | |||||
| Chaetophoraceae | |||||
| Stigeoclonium lubricum | 50,000 | 47,000 | 360,000 | ||
| Ulvophyceae | |||||
| Cladophorales | |||||
| Cladophoraceae | |||||
| Cladophora sp. | 94,000 | ||||
| Charophyceae | |||||
| Zygnemateles | |||||
| Desmidiaceae | |||||
| Closterium leibleinii | 6,700 | ||||
| Closterium moniliferum | 3,700 | ||||
| Cosmarium botrytis | 6,000 | ||||
| Zygnemataceae | |||||
| Mougeotia sp. | 32,000 | ||||