Pinnularia pulchella var. canadensis
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Category
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Length Range183-232 µm
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Width Range29-34 µm
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Striae in 10 µm6-7
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ContributorMicaela Kersey, Marina Potapova - Jun 2022
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ReviewerSarah Spaulding - Aug 2022
Identification
Description
Valves are linear, with a slightly gibbous center and broadly rounded apices. Axial area is linear. Central area is elliptic and slightly wider on the primary valve side. Striae are radiate at the valve center. Striae are convergent and slightly bent at the apices. A boundary of the internal alveolae openings is visible in LM as a longitudinal line that is positioned close to the axial area. The raphe is lateral, with proximal raphe ends that are drop-shaped and deflected to primary side. The terminal raphe fissures are hook-shaped.
Autecology
Pinnularia pulchella var. canadensis is found in lakes of Northeastern United States.
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Size Range, µm3
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Motility
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Attachment
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Habitat
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Colony
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Occurrence
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Waterbody
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Distribution
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Original Description
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AuthorKrammer 2000
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Length Range180-225 µm
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Width32-35 µm
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Striae in 10µm7
Original Images
Citations & Links
Citations
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Publication Link: 10.1038/s41597-022-01661-3
Cite This Page
Kersey, M., Potapova, M. (2022). Pinnularia pulchella var. canadensis. In Diatoms of North America. Retrieved December 26, 2024, from https://diatoms.org/species/224484/pinnularia-pulchella-var-canadensis
Responses
The 15 response plots show an environmental variable (x axis) against the relative abundance (y axis) of Pinnularia pulchella var. canadensis 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.
Pinnularia pulchella var. canadensis
- Valves large
- Valve center slightly gibbous
- Longitudinal line close to axial area
Valves are linear, with a slightly gibbous center and broadly rounded apices. The central area is elliptic and slightly wider on one side. A longitudinal line is close to the axial area.