Navicula cincta

(Ehrenberg) Ralfs in Pritchard 1861      Category: Symmetrical biraphid
BASIONYM: Pinnularia cincta Ehrenberg 1854

Navicula caterva

 

Navicula cryptocephala

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Loren Bahls - July 2012
Length Range: 17-27 µm
Width Range: 4.0-5.6 µm
Striae in 10 µm: 9-10 in center valve, 11-13 at the apices

Description

Valves are linear-lanceolate to elliptic-lanceolate with obtusely rounded, never protracted apices. The axial area is narrow and widens gradually into the central area, which is small and irregular in shape due to the variable length of the central striae. The raphe is filiform and straight with proximal ends that are slightly inflated and relatively close together. Striae are radiate and more widely spaced at valve center, abruptly becoming parallel and then convergent near the apices. Areolae in the striae are very fine and difficult to resolve in LM.



Original Description

Basionym: Pinnularia cincta
Author: Ehrenberg 1854
Length Range: µm
Striae in 10 µm:

Original Description

Original Images


Cite This Page:
Bahls, L. (2012). Navicula cincta. In Diatoms of the United States. Retrieved July 31, 2014, from http://westerndiatoms.colorado.edu/taxa/species/navicula_cincta

Species: Navicula cincta

Contributor: Loren Bahls

Reviewer: Marina Potapova

Citations

Carter, J.R. (1979). On the identity of Navicula cincta Ehrenberg. Bacillaria 2, J. Cramer, Braunschweig, pp. 73-84.

Ehrenberg, C.G. (1854). Mikrogeologie. Einundvierzig Tafeln mit über viertausend grossentheils colorirten Figuren, Gezeichnet vom Verfasser. Voss, Leipzig., Pl. 5, II, fig. 23 (iconotype).

Krammer, K. and Lange-Bertalot, H. (1986). Bacillariophyceae. 1. Teil: Naviculaceae. In: Ettl, H., J. Gerloff, H. Heynig and D. Mollenhauer (eds.) Susswasserflora von Mitteleuropa, Band 2/1. Gustav Fisher Verlag, Jena. 876 pp.

Lange-Bertalot, H. (2001). Navicula sensu stricto, 10 genera separated from Navicula sensu lato, Frustulia. Diatoms of Europe 2: 1-526.

Patrick, R.M. and Reimer, C.W. (1966). The Diatoms of the United States exclusive of Alaska and Hawaii, V. 1. Monographs of the Academy of Natural Sciences of Philadelphia 13.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Navicula cincta CAS

North American Diatom Ecological Database (NADED)

NADED ID: 46324

Autecology Discussion

Navicula cincta is widespread and locally abundant in streams with moderate to high levels of conductivity. These waters tend to have elevated concentrations of chloride, sodium, and sulfate (see table below). Common diatom associates of N. cincta (see table below) share an affinity for brackish and nutrient-rich inland waters.

Images

Abundance-weighted means for selected water quality variables measured concurrently with the collection of samples containing Navicula cincta.

Credit/Source: Montana Diatom Database

Percent co-occurrence of the most frequent diatom associates of Navicula cincta.

Credit/Source: Montana Diatom Database

Charlie Creek, Richland County, Montana: home of Navicula cincta.

Credit/Source: Loren Bahls