Karayevia laterostrata

(Hustedt) Bukhtiyarova 1999      Category: Monoraphid
BASIONYM: Achnanthes laterostrata Hustedt 1933

Karayevia clevei

 

Karayevia nitidiformis

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Marina Potapova - November 2010
Length Range: 9-16 µm
Width Range: 6-8 µm
Striae in 10 µm: 14-18

Description

Valves are elliptical with narrowly capitate to subcapitate apices. The raphe valve has a lanceolate axial area and no distinct central area. The raphe is straight, without terminal fissures. The proximal raphe ends are simple externally. The proximal raphe ends curve toward opposite sides internally. Striae on raphe valve are radiate, in the valve center short and long striae alternate, 14-18 in 10 µm. Each stria represents a single transapically elongated areola. The rapheless valve has a linear axial area and no central area. Striae on rapheless valve are punctate, parallel in the center and slightly radiate at apices, 14-18 in 10 µm. The openings of the areolae are transapically elliptical.



Original Description

Basionym: Achnanthes laterostrata
Author: Hustedt 1933
Length Range: 12-16 µm
Width Range: 6-8 µm
Striae in 10 µm: 16 in 10 μm in RL valve, 18 in 10 μm in R valve

Original Description

Schalen mit breit elliptischem Mittelteil, vor den Polen ziemlich plötzlich und stark verschmälert, mitauffällig breit vorgezogenen, an den Polen f1ach gestutzten Enden, 12—16 μ lang, 6—8 μ breit. Raphenlose Schalen mit sehr schmal lanzettlicher Pseudoraphe, ohne Zentralarea; Transapikalstreifen etwa 16 in 10 μ, leicht radial, deutlich punktiert, Punkte etwa 28 in 10 μ. Raphen-schale mit fadenförmiger Raphe, Axialarea eng, gegen die Mitte kaum erweitert, ohne Zentralarea; Transapikalstreifen nur wenig zarter, etwa 18 in 10 μ, ebenfalls radial, am Rande oft kurze Streifen eingeschoben, Punktierung zarter als auf der anderen Schale

Original Images


Cite This Page:
Potapova, M. (2010). Karayevia laterostrata. In Diatoms of the United States. Retrieved October 21, 2014, from http://westerndiatoms.colorado.edu/taxa/species/karayevia_laterostrata

Species: Karayevia laterostrata

Contributor: Marina Potapova

Reviewer: Rex Lowe

Citations

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

Hustedt, F. (1933). Die Kieselalgen Deutschlands, Österreichs und der Schweiz unter Berücksichtigung der übrigen Länder Europas sowie der angrenzenden Meeresgebiete. In: L. Rabenhorst (ed.), Kryptogamen Flora von Deutschland, Österreich und der Schweiz. Akademische Verlagsgesellschaft m.b.h. Leipzig, Vol. 7, Part 2, pp. 321-432.

Round, F. E. and Bukhtiyarova, L. (1996). Four new genera based on Achnanthes (Achnanthidium) together with a re-definition of Achnanthidium. Diatom Research 11: 345-361.

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

Karayevia laterostrata CAS

North American Diatom Ecological Database (NADED)

NADED ID: 125002

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 laterostrata


EMAP Response Plots

Karayevia laterostrata


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.