• Category
  • Length Range
    9.0-21.0 µm
  • Width Range
    3.0-6.0 µm
  • Striae in 10 µm



The valves are linear lanceolate, with margins more or less parallel, although some specimens may be incised slightly at mid-valve. The apices are attenuated, but not protracted, and are narrowly rounded. A central gap in the fibulae, or central nodule, is present. The fibulae are distinct, with a density of 12-14 in 10 µm. The striae are distinctly punctate.

Original Description

Fibulae density: 10/10 µm.

  • Author
    Rabenh. 1864
  • Striae in 10µm

Original Images


Cite This Page

Kociolek, P. (2011). Nitzschia liebethruthii. In Diatoms of North America. Retrieved July 13, 2024, from https://diatoms.org/species/nitzschia_liebethruthii


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