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 4. Algal density in richest-targeted habitat at sites on the Carson River: East Fork Carson River near Minden, Nev. (site 2, fig. 1) and Carson River near Carson City, Nev. (site 6, fig. 1), 1994-95. Habitats at sampling sites were cobble riffles.
[Abbreviations: cells/cm2, cells per square centimeter; sp., species]
|
Taxon |
Site 2 | Site 6 | ||
|---|---|---|---|---|
| July 25, 1994 (cells/cm2) |
Sept. 15, 1995 (cells/cm2) |
July 19, 1994 (cells/cm2) |
Sept. 12, 1995 (cells/cm2) |
|
| Total number of cells (rounded) | 33,000,000 | 8,400,000 | 15,000,000 | 5,200,000 |
| CYANOPHYTA | ||||
| Undetermined species | 81,000 | 8,400 | 71,000 | 21,000 |
| Cyanophyceae | ||||
| Chroococcales | ||||
| Chroococcaceae | ||||
| Dactylococcopsis rhaphidioides | 8,900 | |||
| Gomphosphaeria lacustris | 6,300,000 | |||
| Merismopedia tenuissima | 43,000 | |||
| Nostocales | ||||
| Nostocaceae | ||||
| Anabaena sp. | 300,000 | 63,000 | ||
| Cylindrospermum minutum | 370,000 | |||
| Oscillatoriaceae | ||||
| Hydrocoleum brebissonii | ||||
| Lyngbya sp. | 6,300,000 | 1,800,000 | 990,000 | 660,000 |
| Oscillatoria sp. | 5,300,000 | 1,200,000 | 1,700,000 | 620,000 |
| Spirulina laxa | 7,200 | |||
| Rivulariaceae | ||||
| Calothrix sp. | 17,000,000 | 2,400,000 | 1,300,000 | |
| RHODOPHYTA | ||||
| Florideophyceae | ||||
| Nemaliales | ||||
| Acrochaetiaceae | ||||
| Audouinella hermanii | 160,000 | 210,000 | 37,000 | |
| CRYPTOPHYTA | ||||
| Undetermined sp. | 8,900 | |||
| BACILLARIOPHYTA | ||||
| Coscinodiscophyceae | ||||
| Thalassiosirales | ||||
| Stephanodiscaceae | ||||
| Cyclotella meneghiniana | 35,000 | 21,000 | 36,000 | |
| Thalassiosiraceae | ||||
| Thalassiosira weissflogii | 4,000 | |||
| Melosirales | ||||
| Melosiraceae | ||||
| Melosira varians | 47,000 | 6,500 | 6,800 | 550,000 |
| Fragilariophyceae | ||||
| Fragilariales | ||||
| Fragilariaceae | ||||
| Diatoma vulgare | 120,000 | 6,500 | 82,000 | 550,000 |
| Fragilaria vaucheriae | 76,000 | 16,000 | 20,000 | 16,000 |
| Fragilaria virescens exigua | 12,000 | |||
| Pseudostaurosira brevistriata | 32,000 | |||
| Fragilaria construens pumila | 47,000 | 6,500 | 180,000 | 28,000 |
| Staurosira construens binodis | 65,000 | 670,000 | 16,000 | |
| Staurosira construens venter | 53,000 | 6,500 | 620,000 | 55,000 |
| Staurosirella leptostauron | 5,900 | |||
| Staurosirella pinnata | 260,000 | 3,300 | 620,000 | 43,000 |
| Synedra acus | 35,000 | |||
| Synedra delicatissima | 5,900 | |||
| Synedra mazamaensis | 3,300 | |||
| Synedra minuscula | 12,000 | |||
| Synedra parasitica subconstricta | 4,000 | |||
| Synedra rumpens | 5,900 | |||
| Synedra rumpens familiaris | 5,900 | |||
| Synedra ulna | 450,000 | 9,800 | 160,000 | 24,000 |
| Synedra ulna oxyrhynchus | 150,000 | 3,300 | ||
| Bacillariophyceae | ||||
| Cymbellales | ||||
| Cymbellaceae | ||||
| Cymbella sp. | 62,000 | |||
| Cymbella affinis | 12,000 | 710,000 | ||
| Cymbella brehmii | 5,900 | |||
| Cymbella turgidula | 7,900 | |||
| Encyonema minutum | 160,000 | 36,000 | ||
| Encyonema muelleri | 18,000 | |||
| Encyonema silesiacum | 5,900 | |||
| Cymbella microcephala crassa | 14,000 | |||
| Reimeria sinuata | 23,000 | 470,000 | 14,000 | 7,900 |
| Reimeria sinuata antiqua | 69,000 | |||
| Gomphonemataceae | ||||
| Gomphoneis eriense variabilis | 26,000 | |||
| Gomphoneis herculeana | 88,000 | 180,000 | ||
| Gomphoneis olivacea | 16,000 | 6,800 | 16,000 | |
| Gomphonema angustatum intermedia | 6,800 | |||
| Gomphonema cf. clevei | 570,000 | 210,000 | 89,000 | 99,000 |
| Gomphonema gracile | 12,000 | |||
| Gomphonema parvulum | 47,000 | |||
| Rhoicospheniaceae | ||||
| Rhoicosphenia abbreviata | 140,000 | 3,300 | 170,000 | 51,000 |
| Achanthales | ||||
| Achnanthidiaceae | ||||
| Achnanthes lauenburgiana | 4,000 | |||
| Achnanthidium affine | 6,500 | |||
| Achnanthidium exiguum heterovalvum | 4,000 | |||
| Achnanthidium minutissimum | 65,000 | 20,000 | 32,000 | |
| Planothidium dubium | 5,900 | 3,300 | 41,000 | |
| Achnanthes hauckiana rostrata | 4,000 | |||
| Planothidium lanceolatum | 34,000 | 7,900 | ||
| Cocconeidaceae | ||||
| Cocconeis pediculus | 200,000 | 160,000 | 16,000 | |
| Cocconeis placentula euglypta | 12,000 | 13,000 | 380,000 | 20,000 |
| Cocconeis placentula lineata | 21,000 | 28,000 | ||
| Naviculales | ||||
| Amphipleuraceae | ||||
| Frustulia vulgaris | 5,900 | |||
| Naviculaceae | ||||
| Geissleria decussis | 3,300 | 6,800 | ||
| Geissleria schoenfeldii | 12,000 | |||
| Navicula sp. | 40,000 | |||
| Navicula cari | 5,900 | 41,000 | ||
| Navicula cincta rostrata | 6,800 | 7,900 | ||
| Navicula clementioides | 14,000 | |||
| Navicula clementis | 6,800 | |||
| Navicula genovefae | 5,900 | |||
| Navicula gregaria | 12,000 | |||
| Navicula lanceolata | 6,800 | 7,900 | ||
| Navicula luzonensis | 6,800 | 4,000 | ||
| Navicula minima | 7,900 | |||
| Navicula rhynchocephala germainii | 24,000 | |||
| Navicula salinarum intermedia | 18,000 | 26,000 | 44,000 | |
| Navicula secreta apiculata | 16,000 | |||
| Navicula tantula | 6,800 | |||
| Navicula tripunctata | 12,000 | 160,000 | 32,000 | |
| Navicula tripunctata schizonemoides | 6,800 | |||
| Navicula viridula avenacea | 20,000 | |||
| Pinnulariaceae | ||||
| Caloneis bacillum | 47,000 | 3,300 | 14,000 | 7,900 |
| Caloneis ventricosa truncatula | 6,800 | 7,900 | ||
| Sellaphoraceae | ||||
| Sellaphora pupula | 5,900 | 14,000 | 7,900 | |
| Sellaphora pupula rectangularis | 12,000 | |||
| Catenulaceae | ||||
| Amphora ovalis | 5,900 | |||
| Amphora ovalis pediculus | 34,000 | |||
| Amphora perpusilla | 5,900 | |||
| Bacillarales | ||||
| Bacillariaceae | ||||
| Nitzschia amphibia | 27,000 | 7,900 | ||
| Nitzschia bacata | 7,900 | |||
| Nitzschia constricta | 7,900 | |||
| Nitzschia dissipata | 3,300 | 120,000 | ||
| Nitzschia dissipata media | 7,900 | |||
| Nitzschia frustulum | 94,000 | 52,000 | 55,000 | 43,000 |
| Nitzschia frustulum perminuta | 18,000 | 39,000 | 27,000 | 210,000 |
| Nitzschia frustulum subsalina | 5,900 | 27,000 | 12,000 | |
| Nitzschia kuetzingiana | 6,500 | |||
| Nitzschia linearis | 7,690 | |||
| Nitzschia linearis tenuis | 4,000 | |||
| Nitzschia palea | 5,900 | 6,800 | 4,000 | |
| Nitzschia recta | 4,000 | |||
| Nitzschia romana | 4,000 | |||
| Nitzschia tropica | 12,000 | |||
| Tryblionella hungarica | 4,000 | |||
| Tryblionella levidensis | 7,900 | |||
| Rhopalodiales | ||||
| Rhopalodiaceae | ||||
| Epithemia sorex | 470,000 | 13,000 | 240,000 | 20,000 |
| Epithemia turgida | 12,000 | |||
| Rhopalodia gibba ventricosa | 5,900 | 6,800 | ||
| Rhopalodia gibberula | 4,000 | |||
| CHLOROPHYTA | ||||
| Undetermined species | 16,000 | 18,000 | 29,000 | |
| Chlorophyceae | ||||
| Volvocales | ||||
| Chlamydomonadaceae | ||||
| Chlamydomonas sp. | 8,900 | |||
| Chlorococcales | ||||
| Dictyosphaeriaceae | ||||
| Dictyosphaerium ehrenbergianum | 130,000 | 36,000 | ||
| Dictyosphaerium pulchellum | 36,000 | |||
| Oocystaceae | ||||
| Ankistrodesmus falcatus | 97,000 | 8,400 | 27,000 | 14,000 |
| Kirchneriella lunaris | 80,000 | |||
| Quadrigula lacustris | 14,000 | |||
| Scenedesmaceae | ||||
| Scenedesmus acutus | 220,000 | |||
| Scenedesmus bijuga | 34,000 | |||
| Scenedesmus denticulatus | 67,000 | 41,000 | ||
| Scenedesmus dimorphus | 36,000 | |||
| Chaetophorales | ||||
| Chaetophoraceae | ||||
| Stigeoclonium lubricum | 600,000 | 850,000 | 660,000 | |
| Ulvophyceae | ||||
| Cladophorales | ||||
| Cladophoraceae | ||||
| Cladophora sp. | 16,000 | |||
| Charophyceae | ||||
| Zygnemateles | ||||
| Desmidiaceae | ||||
| Closterium leibleinii | 7,200 | |||
| Cosmarium botrytis | 8,400 | |||
| Cosmarium punctulatum | 8,900 | |||