Gomphoneis eriense

(Grun.) Skv. in Skv. and Meyer 1928      Category: Asymmetrical biraphid
BASIONYM: Gomphonema eriense Grunow 1878

Gliwiczia calcar


Gomphoneis eriense var. angularis

LM scalebar = 10 µm = 40 pixels.


Contributor: Pat Kociolek - September 2011
Length Range: 25-67 µm
Width Range: 9.5-13.0 µm
Striae in 10 µm: 12-16


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.

Original Description

Basionym: Gomphonema eriense
Author: Grunow 1878
Length Range: µm
Striae in 10 µm:

Original Description

Original Images

Cite This Page:
Kociolek, P. (2011). Gomphoneis eriense. In Diatoms of the United States. Retrieved October 23, 2016, from http://westerndiatoms.colorado.edu/taxa/species/gomphoneis_eriense

Species: Gomphoneis eriense

Contributor: Pat Kociolek

Reviewer: Marina Potapova


Grunow, A. (1878). Algen und Diatomaceen aus dem Kaspischen Meere. In: O. Schneider (ed.), Naturwissenschafte Beiträge zur Kenntniss der Kaukasusländer, auf Grund seiner Sammelbeute. Dresden, pp. 98-132, pls. 3-4.

Kociolek, J.P. and Stoermer, E.F. (1988). Taxonomy, ultrastructure and distribution of Gomphoneis herculeana, G. eriense and closely related species (Naviculales: Gomphonemataceae). Proc. Acad. Nat. Sci. Phil. 140: 24-97. http://www.jstor.org/stable/4064935

Skvortzow, B.W. and Meyer, C.I. (1928). A contribution to the diatoms of Baikal Lake. Proceedings of the Sungaree River Biological Station, 1(5): 1-55.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Gomphoneis eriense CAS

North American Diatom Ecological Database (NADED)

NADED ID: 36001

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

Gomphoneis eriense

EMAP Response Plots

Gomphoneis eriense

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.