Caloneis silicula

(Ehrenberg) Cleve 1894      Category: Symmetrical biraphid
BASIONYM: Navicula silicula Ehrenberg 1843

Caloneis lewisii

 

Campylodiscus hibernicus

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Pat Kociolek - March 2011
Length Range: 27-45 µm
Width Range: 5-7 µm
Striae in 10 µm: 14-20

Description

Valves are linear and biconstricted, with apices rounded. Axial area narrow, broadening to a transverse fascia with lunate thickenings on either side of the central area. The raphe is lateral and arched slightly. The striae are radiate to parallel. A fine longitudinal line is present.

The concept for this species embraced by Krammer and Lange-Bertalot (1986) is quite broad, encompassing what appear to be many taxa. The type specimens of Ehrenberg have yet to be assessed, and this may be crucial to our understanding of the species.



Original Description

Basionym: Navicula silicula
Author: Ehrenberg 1843
Length Range: µm
Striae in 10 µm:

Original Description

N. Silicula, testula linearis elongata , a dorso aequaliter trinodis, nodo uno medio, duobus apicalibus, hinc apicibus obtusissimis.

Original Images


Cite This Page:
Kociolek, P. (2011). Caloneis silicula. In Diatoms of the United States. Retrieved October 31, 2014, from http://westerndiatoms.colorado.edu/taxa/species/caloneis_silicula

Species: Caloneis silicula

Contributor: Pat Kociolek

Reviewer: Sam Rushforth

Citations

Hustedt, F. (1930). Die Kieselalgen Deutschlands, Osterreichs und der Schweiz mit Berucksichtigung der ubrigen Lander Europas sowie der angrenzenden Meersgebiete. In: Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Osterreich und der Schweiz. Leipzig, Akademische Verlagsgesellschaft Geest und Portig K.-G. Vol. 7, Part 3, pp. 557-816.

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.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Caloneis silicula CAS

NCBI Genbank Taxonomy

Caloneis silicula NCBI

North American Diatom Ecological Database (NADED)

NADED ID: 12010

Autecology Discussion

EMAP Assessment

The Environmental Protection Agency (EPA) western Environmental Monitoring and Assessment Program (EMAP) study was completed during the years 2000-2004 (see citations at bottom of this page). Over 1200 streams and rivers in 12 western states (Arizona, California, Colorado, Idaho, Montana, Nevada, North Dakota, Oregon, South Dakota, Utah, Washington and Wyoming) were selected for sampling based on a stratified randomized design. This type of design insures that ecological resources are sampled in proportion to their actual geographical presence. Stratified randomized design also allows for estimates of stream length with a known confidence in several “condition classes” (good or least-disturbed, intermediately-disturbed, and poor or most-disturbed) for biotic condition, chemistry and habitat.


EMAP Distribution

Caloneis silicula


EMAP Response Plots

Caloneis silicula


EMAP citations

Results are published in:

Johnson, T., Hermann, K., Spaulding, S., Beyea, B., Theel, C., Sada, R., Bollman, W., Bowman, J., Larsen, A., Vining, K., Ostermiller, J., Petersen, D. Hargett, E. and Zumberge, J. (2009). An ecological assessment of USEPA Region 8 streams and rivers. U.S. Environmental Protection Agency Region 8 Report, 178 p.

Stoddard, J. L., Peck, D. V., Olsen, A. R., Larsen, D. P., Van Sickle, J., Hawkins, C. P., Hughes, R. M., Whittier, T. R., Lomnicky, G. A., Herlihy, A. T., Kaufman, P. R., Peterson, S. A., Ringold, P. L., Paulsen, S. G., and Blair, R. (2005). Environmental Monitoring and Assessment Program (EMAP) western streams and rivers statistical summary. U.S. Environmental Protection Agency Report 620/R-05/006, 1,762 p.

Stoddard, J. L., Peck, D. V., Paulsen, S. G., Van Sickle, J., Hawkins, C. P., Herlihy, A. T., Hughes, R. M., Kaufman, P. R., Larsen, D. P., Lomnicky, G. A., Olsen, A. R., Peterson, S. A., Ringold, P. L., and Whittier, T. R. (2005). An ecological assessment of western streams and rivers. U.S. Environmental Protection Agency Report 620/R-05/005, 49 p.