• Category
  • Length Range
    10-25 µm
  • Width Range
    4.2-6.5 µm
  • Striae in 10 µm
    8-11
  • Synonyms
    Navicula capitata var. hungarica (Grunow) R.Ross

Identification

Description

Valves are elliptical-lanceolate with rounded apices. The axial area is narrow and linear. The central area is small and round or elliptical. The raphe is straight, filiform, with slightly expanded external proximal ends. The distal raphe ends are deflected to the secondary valve side. The striae are biseriate. The areolae are elongated, oriented in the apical axis. Internally the striae open into shallow alveoli. A hyaline area and one or two apical rows of areolae are present at each end of the valve.

Original Description

  • Basionym
    Navicula hungarica
  • Author
    Grunow 1860

Original Images

Nahungar  Or Ill001 1
Nahungar  Or Descr001

Cite This Page

Potapova, M. (2021). Hippodonta hungarica. In Diatoms of North America. Retrieved September 26, 2021, from https://diatoms.org/species/hippodonta_hungarica

Responses

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