Karayevia clevei

(Grunow) Bukht. 1999      Category: Monoraphid
BASIONYM: Achnanthes clevei Grunow in Cleve and Grunow 1880

Karayevia amoena


Karayevia laterostrata

LM scalebar = 10 µm = 80 pixels.


Contributor: Marina Potapova - November 2010
Length Range: 10-28 µm
Width Range: 5.0-8.2 µm
Striae in 10 µm: 9-12 on rapheless valve, 18-24 on raphe valve


Valves are lanceolate with rounded to subrostrate apices. The raphe valve has a narrowly lanceolate axial area and no distinct central area. The raphe is straight, with terminal fissures deflected to the same side. The proximal raphe ends are slightly expanded externally. The proximal raphe ends are deflected toward opposite sides internally. Striae on raphe valve are radiate, 18-24 in 10 µm. Shortened marginal striae are often present in the middle part of the raphe valve. The areolae openings are transapical slits. The rapheless valve has a narrow linear axial area and no central area. Striae on rapheless valve are coarsely punctate, parallel in the center and slightly radiate at apices, 9-12 in 10 µm. The openings of the areolae are transapically elliptical.

Original Description

Basionym: Achnanthes clevei
Author: Grunow in Cleve and Grunow 1880
Length Range: µm
Striae in 10 µm: 18-24 on raphe valve, 9-11 on rapheless valve

Original Description

Klein, Schaalen breit lanzettlich mit stumpf vorgezogenen En-den. Querstreifen radial, in der Unterschaale 18—24, in der Oberschaale 9—11 in 0,01 mm., stark punktirt.

Original Images

Cite This Page:
Potapova, M. (2010). Karayevia clevei. In Diatoms of the United States. Retrieved April 18, 2018, from http://westerndiatoms.colorado.edu/taxa/species/karayevia_clevei

Species: Karayevia clevei

Contributor: Marina Potapova

Reviewer: Rex Lowe


Bukhtiyarova, L. (1999). Diatoms of Ukraine inland waters. National Academy of Sciences of Ukraine, M.G. Kholodny Institute of Botany, Kyiv, Ukraine. 133 pp.

Bukhtiyarova, L.N. (2006). Additional data on the diatom genus Karayevia and a proposal to reject the genus Kolbesia. Nova Hedwigia Beiheft 130: 85-96.

Cleve, P.T. and Grunow, A. (1880). Beiträge zur Kenntniss der Arktischen Diatomeen. Kongliga Svenska-Vetenskaps Akademiens Handlingar, 17(2): 121 pp., 7 pls.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Karayevia clevei CAS

North American Diatom Ecological Database (NADED)

NADED ID: 125001

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

Karayevia clevei

EMAP Response Plots

Karayevia clevei

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.