Gomphoneis eriensis
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Category
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Length Range25- 67 µm
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Width Range9.5-13.0 µm
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Striae in 10 µm12-16
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ContributorPat Kociolek - Sep 2011
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ReviewerMarina Potapova - Oct 2011
Identification
Description
Larger valves are lanceolate-clavate, angular in outline, with only slightly protracted headpole and broadly rounded footpole. The axial area is narrow, broadening to form a small circular central area. The raphe is lateral and undulate. The striae are radiate, strongly so at the central portion of the valve. The striae are broad, biseriate, with individual areolae observable with oblique light in the light microscope. Longitudinal lines are distinct and positioned near the axial area. A single, distinct stigma is present in the central area.
Autecology
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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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BCG
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Waterbody
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Distribution
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Original Description
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BasionymGomphonema eriense
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AuthorGrunow 1878
Citations & Links
Citations
Links
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Index Nominum Algarum
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North American Diatom Ecological DatabaseNADED ID: 36001
Updates
Nov 22, 2024 - Correction of ending
From 8/30/2011 until 11/22/2024, this taxon appeared as Gomphoneis eriense. The ending is now corrected to "eriensis". - S. Spaulding
Cite This Page
Kociolek, P. (2011). Gomphoneis eriensis. In Diatoms of North America. Retrieved December 26, 2024, from https://diatoms.org/species/46707/gomphoneis_eriensis
Responses
The 15 response plots show an environmental variable (x axis) against the relative abundance (y axis) of Gomphoneis eriensis 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.
Gomphoneis eriensis
- Larger valves lanceolate-clavate and angular
- Longitudinal lines distinct
- Single, distinct stigma present in the central area
Larger valves are lanceolate-clavate and angular, with a slightly protracted headpole and broadly rounded footpole. The raphe is lateral and undulate. Longitudinal lines are distinct and positioned near the axial area. A single, distinct stigma is present in the central area.