Epithemia reicheltii | Species - Diatoms of North America

Category

Epithemioid
Length Range

13-41 µm
Width Range

5.2-9 µm
Striae in 10 µm

14-15

Contributor

Rex Lowe - Dec 2011
Reviewer

Sarah Spaulding - Mar 2012

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Identification

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Description

Valves are dorsiventral. The dorsal margin is strongly convex and the ventral margin is nearly flat to weakly concave, resulting in the valve being triangular in shape. The valve tapers from the center to rounded, undifferentiated ends. The raphe canal lies close to the dorsal margin and is straight, rather than arched. Costae are 3-4 in 10 μm, with 3-6 striae between costae.

Autecology

This taxon is more common in calcium-rich, nitrogen-poor habitats and possesses endosymbiotic nitrogen-fixing cyanobactetria.

Size Range, µm3

1001-10000
Motility

Moderately motile
Attachment

Unattached
Habitat

Benthic
Colony

Solitary
Waterbody

Inland
Distribution

Western rivers 2004 Northeast lake sediments
Learn more about this

Original Description

Author

Fricke in Schmidt et al. 1904

Original Images

Citations & Links

Citations

Schmidt, A. (0) (1874-1959). Atlas der Diatomaceen-Kunde, von Adolf Schmidt, continued by Martin Schmidt, Friedrich Fricke, Heinrich Heiden, Otto Muller, Friedrich Hustedt. Reprint 1984, Koeltz Scientific Books, Konigstein, 480 plates.

Cite This Page

Lowe, R. (2011). Epithemia reichelti. In Diatoms of North America. Retrieved December 21, 2024, from https://diatoms.org/species/47794/epithemia_reicheltii

Responses

The 15 response plots show an environmental variable (x axis) against the relative abundance (y axis) of Epithemia reichelti 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.