Pinnularia bigibba | Species - Diatoms of North America

Category

Symmetric Biraphid
Length Range

36-38 µm
Width Range

5.4-5.6 µm
Striae in 10 µm

11

Contributor

Laura Aycock - Sep 2022
Reviewer

Sarah Spaulding - Oct 2022

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Identification

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Description

Valves are linear with undulate sides that are constricted in the center. Apices are capitate to subcapitate. Axial area is narrow and the central area has a transverse fascia. Raphe is filiform and narrow with comma shaped terminal fissures. Striae are very slightly radiate or parallel in the center becoming convergent at the apices.

Autecology

Size Range, µm3

1001-10000
Motility

Moderately motile
Attachment

Unattached
Habitat

Benthic
Colony

Solitary
Occurrence

Rare
Waterbody

Inland
Learn more about this

Original Description

Author

E.E.Gaiser and J.Johansen 2000
Length Range

38-41 µm
Width

5-6 µm
Striae in 10µm

9-10

Original Images

Citations & Links

Citations

Gaiser, E.E. and Johansen, J. (2000) Freshwater diatoms from Carolina bays and other isolated wetlands on the Atlantic Coastal Plain of South Carolina, USA, with descriptions of seven taxa new to science Diatom Research 15(1): 75-130

Publication Link: 10.1080/0269249X.2000.9705487

Cite This Page

Aycock, L. (2022). Pinnularia bigibba. In Diatoms of North America. Retrieved December 26, 2024, from https://diatoms.org/species/244759/pinnularia-bigibba

Responses

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