Credit: Ryan Davis, Adventurers and Scientists for Conservation.
Nada Lake, Chelan County, Washington: type locality.
Kurtkrammeria treinishii
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Category
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Length Range55-80 µm
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Width Range7.6-10.3 µm
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Striae in 10 µm12-15 at valve center, 14-17 near the apices
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ContributorLoren Bahls - May 2013
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ReviewerPat Kociolek - Aug 2013
Identification
Description
Valves are rhombic-lanceolate and not or weakly dorsiventral. Apices are subrostrate and broadly rounded. Axial and central areas are relatively wide, together forming a narrow longitudinal lanceolate hyaline area. The raphe is lateral, becoming filiform at the proximal and distal ends. Proximal raphe ends are weakly expanded and deflected dorsally. Distal raphe fissures are comma-shaped, concave toward the ventral margin. Striae are radiate, becoming parallel then convergent toward the apices. Striae near the central area are curved and then recurved near the margin, or sinuous. One, or rarely, two stigmata are present on the dorsal side of the central area.
Autecology
This taxon has been collected from a few small lakes and fens in Montana and Washington. Here pH ranges from 6.02 to 7.24 and specific conductance from 30 to 58 µS/cm.
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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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Waterbody
- Learn more about this
Original Description
Valves rhombic-lanceolate, not or slightly dorsiventral. Apices subrostrate, broadly rounded. Valve length 61.8–79.9 µm; valve width 7.9–10.3 µm. Axial and central areas relatively wide, together forming a narrow longitudinal lanceolate space. Raphe lateral, filiform at the proximal and distal ends. Proximal raphe ends weakly expanded, deflected dorsally. Distal raphe fissures comma-shaped, concave toward the ventral margin. Striae radiate, becoming parallel then convergent toward the apices, 12–15 in 10 µm at valve center, 14–17 in 10 µm near the apices. Striae near the central area are curved and then recurved (sinuous). A single stigma lies at the proximal end of the median stria on the dorsal side.
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BasionymEncyonopsis treinishii
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AuthorBahls 2013
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Length Range61.8-79.9 µm
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Width7.9-10.3 µm
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Striae in 10µm12-15 at valve center, 14-17 near the apices
Original Images
Citations & Links
Citations
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Publication Link: 10.1127/nova_hedwigia/2015/0263
Links
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Index Nominum Algarum
Updates
Dec 30, 2024 - Transfer from Encyonopsis to Kurtkrammeria
This taxon page appeared under the genus Encyonopsis. The page was updated to follow the transfer to Kurtkrammeria made by Bahls (2015). - S. Spaulding
Cite This Page
Bahls, L. (2013). Kurtkrammeria treinishii. In Diatoms of North America. Retrieved December 30, 2024, from https://diatoms.org/species/48992/kurtkrammeria_treinishii
Responses
The 15 response plots show an environmental variable (x axis) against the relative abundance (y axis) of Kurtkrammeria treinishii 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.
Kurtkrammeria treinishii
- Valves rhombic-lanceolate
- Striae 12-17 in 10 µm
- Striae sinuous near center
- Usually, one stigma present
Encyonopsis treinishii has rhombic-lanceolate valves that are 7.6-10.3 µm wide. Striae number 12-17 in 10 µm and are sinuous near the valve center. One, or rarely two, stigmata are present on the dorsal side of the central area.