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 14. Algal density in richest-targeted habitat at sites on the Truckee River: Upper Truckee River at South Lake Tahoe, Calif. (site 11, fig. 1), Truckee River at Mayberry Drive below Lawton, Nev. (site 13, fig. 1), and Truckee River at Idlewild Park at Reno, Nev. (site 14, fig. 1), 1993-95. Habitats sampled were cobble riffles.
[Abbreviations: cells/cm2, cells per square centimeter; sp., species]
|
Taxon |
Site 11, |
Site 13 | Site 14 | ||
|---|---|---|---|---|---|
| July 1, 1994 | Sept. 21, 1995 | July 5, 1994 | Sept. 22, 1995 | ||
| Total number of cells (rounded) | 700,000 | 1,100,000 | 2,600,000 | 3,500,000 | 5,900,000 |
| CYANOPHYTA | |||||
| Undetermined species | 40,000 | ||||
| Cyanophyceae | |||||
| Chroococcales | |||||
| Chroococcaceae | |||||
| Dactylococcopsis rhaphidioides | 2,700 | ||||
| Merismopedia tenuissima | 13,000 | ||||
| Nostocales | |||||
| Nostocaceae | |||||
| Anabaena sp. | 100,000 | ||||
| Anabaena oscillarioides | 300,000 | ||||
| Cylindrospermum minutum | 37,000 | ||||
| Oscillatoriaceae | |||||
| Hydrocoleum brebissonii | 53,000 | 27,000 | 51,000 | ||
| Lyngbya sp. | 490,000 | 220,000 | 510,000 | ||
| Oscillatoria sp. | 320,000 | 420,000 | 620,000 | 1,800,000 | |
| Rivulariaceae | |||||
| Calothrix sp. | 640,000 | 360,000 | 3,300,000 | ||
| Calothrix fusca | 66,000 | ||||
| BACILLARIOPHYTA | |||||
| Coscinodiscophyceae | |||||
| Thalassiosirales | |||||
| Stephanodiscaceae | |||||
| Cyclotella meneghiniana | 1,900 | 6,000 | |||
| Cyclotella radiosa | 420 | ||||
| Melosirales | |||||
| Melosiraceae | |||||
| Melosira varians | 71,000 | ||||
| Aulacoseirales | |||||
| Aulacoseiraceae | |||||
| Aulacoseira sp. | 1,300 | ||||
| Aulacoseira ambigua | 1,300 | ||||
| Aulacoseira italica | 4,400 | 3,800 | |||
| Fragilariophyceae | |||||
| Fragilariales | |||||
| Fragilariaceae | |||||
| Fragilaria exiguiformis | 1,300 | 950 | |||
| Fragilaria vaucheriae | 5,100 | 23,000 | 54,000 | 1,700 | |
| Hannaea arcus | 2,500 | ||||
| Martyana martyi | 3,000 | ||||
| Meridion circulare | 1,300 | ||||
| Pseudostaurosira brevistriata | 3,500 | 1,300 | |||
| Fragilaria brevistriata inflata | 30,000 | 850 | |||
| Staurosira construens | 3,800 | ||||
| Fragilaria construens pumila | 44,000 | 3,500 | 36,000 | 1,300 | |
| Fragilaria construens subsalina | 5,100 | ||||
| Staurosira construens binodis | 1,300 | 31,000 | |||
| Staurosira construens venter | 5,700 | 150,000 | 84,000 | 120,000 | 5,500 |
| Staurosirella pinnata | 58,000 | 76,000 | 100,000 | 6,800 | |
| Synedra rumpens | 2,500 | 9,000 | |||
| Synedra rumpens familiaris | 3,500 | 850 | |||
| Synedra rumpens meneghiniana | 14,000 | ||||
| Synedra ulna | 2,900 | 420 | |||
| Synedra ulna oxyrhynchus | 3,500 | 2,100 | |||
| Bacillariophyceae | |||||
| Eunotiales | |||||
| Eunotiaceae | |||||
| Eunotia tenella | 1,300 | ||||
| Cymbellales | |||||
| Cynbellaceae | |||||
| Cymbella sp. | 3,800 | 85,000 | 420 | ||
| Cymbella affinis | 1,300 | 72,000 | 4,200 | ||
| Cymbella cistula | 3,500 | ||||
| Cymbella mexicana janischii | 950 | 69,000 | |||
| Cymbella tumida | 630 | ||||
| Encyonema minutum | 74,000 | 200,000 | 27,000 | 24,000 | |
| Encyonema muelleri | 950 | 7,000 | 520,000 | 1,300 | |
| Encyonema silesiacum | 3,500 | 420 | |||
| Reimeria sinuata | 1,300 | 28,000 | 15,000 | 10,000 | |
| Reimeria sinuata antiqua | 950 | 3,000 | |||
| Gomphonemataceae | |||||
| Gomphoneis eriense variabilis | 3,500 | ||||
| Gomphoneis herculeana | 3,500 | 6,000 | 2,100 | ||
| Gomphonema sp. | 24,000 | 1,900 | 3,500 | 24,000 | 13,000 |
| Gomphonema parvulum | 420 | ||||
| Gomphosphenia grovei | 950 | ||||
| Rhoicospheniaceae | |||||
| Rhoicosphenia abbreviata | 3,200 | 950 | 10,000 | 72,000 | 130,000 |
| Achanthales | |||||
| Achnanthidiaceae | |||||
| Achnanthidium minutissimum | 1,900 | 130,000 | 36,000 | 8,000 | |
| Karayevia clevei | 1,300 | ||||
| Planothidium dubium | 1,300 | 3,500 | 6,000 | ||
| Planothidium lanceolatum | 2,500 | 3,500 | |||
| Rossithidium pusillum | 35,000 | 420 | |||
| Cocconeidaceae | |||||
| Cocconeis pediculus | 3,800 | 160,000 | |||
| Cocconeis placentula euglypta | 2,800 | 3,500 | 45,000 | 3,000 | |
| Cocconeis placentula lineata | 2,500 | 10,000 | 2,100 | ||
| Naviculales | |||||
| Amphipleuraceae | |||||
| Frustulia vulgaris | 1,300 | 420 | |||
| Naviculaceae | |||||
| Fistulifera pelliculosa | 1,300 | ||||
| Geissleria decussis | 14,000 | 950 | |||
| Hippodonta capitata | 1,300 | ||||
| Navicula sp. | 63,000 | ||||
| Navicula canoris | 4,400 | ||||
| Navicula cari | 6,000 | ||||
| Navicula cincta rostrata | 1,300 | 950 | |||
| Navicula cryptocephala veneta | 6,000 | ||||
| Navicula detenta | 1,300 | ||||
| Navicula graciloides | 10,000 | ||||
| Navicula gregaria | 3,500 | 12,000 | |||
| Navicula lanceolata | 1,300 | 3,500 | |||
| Navicula menisculus | 13,000 | ||||
| Navicula minima | 1,300 | 3,500 | |||
| Navicula rhynchocephala germainii | 1,300 | 3,000 | 850 | ||
| Navicula salinarum intermedia | 17,000 | 88,000 | 17,000 | ||
| Navicula secreta apiculata | 1,300 | 3,500 | |||
| Navicula tripunctata | 1,900 | 16,000 | 180,000 | 3,800 | |
| Navicula viridula avenacea | 14,000 | 4,200 | |||
| Neidiaceae | |||||
| Neidium apiculatum | 950 | ||||
| Pinnulariaceae | |||||
| Caloneis amphisbaena | 950 | ||||
| Caloneis bacillum | 950 | 9,000 | |||
| Caloneis ventricosa truncatula | 950 | ||||
| Sellaphoraceae | |||||
| Sellaphora americana | 630 | ||||
| Sellaphora pupula rectangularis | 1,900 | ||||
| Thalassiophysales | |||||
| Catenulaceae | |||||
| Amphora ovalis | 630 | ||||
| Amphora ovalis pediculus | 950 | 1,700 | |||
| Amphora perpusilla | 15,000 | ||||
| Bacillarales | |||||
| Bacillariaceae | |||||
| Nitzschia acula | 1,900 | ||||
| Nitzschia amphibia | 6,000 | ||||
| Nitzschia diserta | 6,000 | ||||
| Nitzschia dissipata | 1,300 | 190,000 | 420 | ||
| Nitzschia dissipata media | 17,000 | ||||
| Nitzschia frustulum | 1,300 | 3,800 | 63,000 | 12,000 | |
| Nitzschia frustulum perminuta | 1,300 | 1,900 | 14,000 | 6,000 | 3,400 |
| Nitzschia frustulum subsalina | 2,100 | ||||
| Nitzschia kuetzingiana | 1,900 | ||||
| Nitzschia linearis tenuis | 850 | ||||
| Nitzschia palea | 3,500 | ||||
| Nitzschia reversa | 950 | ||||
| Nitzschia romana | 630 | ||||
| Tryblionella hungarica | 1,900 | ||||
| Rhopalodiales | |||||
| Rhopalodiaceae | |||||
| Epithemia adnata | 6,000 | ||||
| Epithemia sorex | 150,000 | 30,000 | 2,100 | ||
| Epithemia turgida | 2,500 | 3,800 | |||
| Rhopalodia gibba | 2,500 | 1,900 | 6,000 | ||
| Rhopalodia gibba ventricosa | 47,000 | ||||
| Rhopalodia gibberula | 18,000 | ||||
| Surirellales | |||||
| Surirellaceae | |||||
| Surirella angusta | 1,300 | ||||
| CHLOROPHYTA | |||||
| Unidentified species | 5,300 | 12,000 | |||
| Chlorophyceae | |||||
| Chlorococcales | |||||
| Hydrodictyaceae | |||||
| Pediastrum boryanum | 83,000 | ||||
| Pediastrum tetras | 24,000 | ||||
| Oocystaceae | |||||
| Ankistrodesmus falcatus | 5,300 | 140,000 | |||
| Scenedesmaceae | |||||
| Scenedesmus denticulatus | 12,000 | 140,000 | |||
| Scenedesmus ecornis | 1,800 | ||||
| Scenedesmus quadricauda | 11,000 | ||||
| Ulvophyceae | |||||
| Cladophorales | |||||
| Cladophoraceae | |||||
| Cladophora sp. | 21,000 | ||||
| Charophyceae | |||||
| Zygnemateles | |||||
| Desmidiaceae | |||||
| Cosmarium sp. | 6,400 | ||||
| Cosmarium botrytis | 6,000 | ||||