Nitzschia balcanica
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Category
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Length Range23.0-63.0 µm
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Width Range4.0-5.0 µm
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Striae in 10 µm38-40
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Reported AsNitzschia capitellata (Krammer and Lange-Bertalot 1988, Taf. 62, Fig. 2-6, 7-12)
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ContributorPat Kociolek - Feb 2011
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ReviewerLoren Bahls - May 2012
Identification
Description
The valves are lanceolate, constricted slightly in the center and tapering towards the ends to form rounded apices. The fibulae are of varying sizes, numbering 12-16 in 10 µm. A central nodule is present. The striae are faint.
Original Description
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AuthorHust. 1945
Citations & Links
Cite This Page
Kociolek, P. (2011). Nitzschia balcanica. In Diatoms of North America. Retrieved December 21, 2024, from https://diatoms.org/species/46783/nitzschia_balcanica
Responses
The 15 response plots show an environmental variable (x axis) against the relative abundance (y axis) of Nitzschia balcanica 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.
Nitzschia balcanica
- Valves constricted at valve center
- Central nodule present
- Fibula size variable
The valve margin is constricted at the center. A central nodule is present and fibulae are variable in size.