Denticula subtilis | Species - Diatoms of North America

Category

Nitzschioid
Length Range

7.4-20.6 µm
Width Range

2-3 µm
Striae in 10 µm

26-40

Contributor

Nina Desianti - Apr 2016
Reviewer

Sarah Spaulding - Apr 2016

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Identification

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Description

Valves are small, linear-lanceolate with acute ends. The keel is marginal along the edge of valve face. Striae are sometimes visible under LM. Costae are typically parallel to one another, measuring in 8-9 in 10 µm.

Autecology

Size Range, µm3

11-100
Motility

Highly motile
Attachment

Unattached
Habitat

Soils Benthic
Colony

Solitary
BCG

BCG 4
Waterbody

Inland
Distribution

Western rivers 2004 California coastal rivers 2017
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Original Description

D. subtilis nov. spec. Klein (0.0005-0.0010” lang), Schalen schmas linear lanzettlich mit spitzen Enden, Rippen zart 18-22 in 0.001”, Querstreifen über 40 in 0.001”. Im brackischen Wasser.

Author

Grunow 1862
Length Range

12.7-25.4 µm
Striae in 10µm

> 15.7

Original Images

Citations & Links

Citations

Cite This Page

Desianti, N. (2016). Denticula subtilis. In Diatoms of North America. Retrieved December 11, 2024, from https://diatoms.org/species/51378/denticula_subtilis

Responses

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