Credit: Paula C. Furey
Type locality: seep wall above Rock Creek along Snake Den Ridge Trail in the Great Smoky Mountains National Park.
Eunotia mydohaimasiae
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Category
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Length Range24-62 µm
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Width Range2.7-4.4 µm
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Striae in 10 µm11-14 in the center valve, 16-18 at the ends
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ContributorPaula Furey - Mar 2011
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ReviewerRex Lowe - Apr 2011
Identification
Description
Ventral margin is concave. Dorsal margin is convex. The apices are set off by a change in slope of the dorsal margin. The ends are narrowed, extended, and rostrate. The helictoglossae are not visible in the LM. Striae are radiate. Areolae are unresolved in the LM.
Autecology
Eunotia mydohaimasiae is associated with wet walls, and can be epiphytic on bryophytes or associated with algal slime or epilithon.
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Size Range, µm3
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Motility
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Habitat
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Waterbody
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Credit: Paula C. Furey
Eunotia mydohaimasiae was collected from this seep wall along Enloe Creek Trail in the Great Smoky Mountains National Park.
Original Description
Valves concave on the ventral margin, convex on the dorsal margin, with apices set off by a change in slope of the dorsal margin, 24 – 62 μm long, 2.7 – 4.4 μm wide. Ends narrowed, extended, rostrate. Helictoglossae not visible in light microscope. Rimoportula at one valve end. Striae radiate, 11 – 14 in 10 µm at the valve center, 16 – 18 in 10 μm near the valve apices, Puncta unresolved in light microscope.
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AuthorFurey, Lowe and Johansen 2011
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Length Range24-62 µm
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Width2.7-4.4 µm
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Striae in 10µm11-14 in the center valve, 16-18 at the ends
Original Images
Cite This Page
Furey, P. (2011). Eunotia mydohaimasiae. In Diatoms of North America. Retrieved December 21, 2024, from https://diatoms.org/species/46276/eunotia_mydohaimasiae
Responses
The 15 response plots show an environmental variable (x axis) against the relative abundance (y axis) of Eunotia mydohaimasiae from all the stream reaches where it was present. Note that the relative abundance scale is the same on each plot. Explanation of each environmental variable and units are as follows:
ELEVATION = stream reach elevation (meters)
STRAHLER = distribution plot of the Strahler Stream Order
SLOPE = stream reach gradient (degrees)
W1_HALL = an index that is a measure of streamside (riparian) human activity that ranges from 0 - 10, with a value of 0 indicating of minimal disturbance to a value of 10 indicating severe disturbance.
PHSTVL = pH measured in a sealed syringe sample (pH units)
log_COND = log concentration of specific conductivity (µS/cm)
log_PTL = log concentration of total phosphorus (µg/L)
log_NO3 = log concentration of nitrate (µeq/L)
log_DOC = log concentration of dissolved organic carbon (mg/L)
log_SIO2 = log concentration of silicon (mg/L)
log_NA = log concentration of sodium (µeq/L)
log_HCO3 = log concentration of the bicarbonate ion (µeq/L)
EMBED = percent of the stream substrate that is embedded by sand and fine sediment
log_TURBIDITY = log of turbidity, a measure of cloudiness of water, in nephelometric turbidity units (NTU).
DISTOT = an index of total human disturbance in the watershed that ranges from 1 - 100, with a value of 0 indicating of minimal disturbance to a value of 100 indicating severe disturbance.
Eunotia mydohaimasiae
- Ventral margin concave
- Dorsal margin convex
- Dorsal margin with change in slope near apices
- Ends narrow
- Striae radiate
Valves are concave on the ventral margin and convex on the dorsal margin. The apices are set off by a change in slope of the dorsal margin. The ends are narrowed, extended, and rostrate. Striae are radiate.