Cymbella turgidula

Grunow in Schmidt et al. 1875      Category: Asymmetrical biraphid
BASIONYM: Cymbella turgidula Grunow in Schmidt et al. 1875

Cymbella tropica

 

Cymbellonitzschia diluviana

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Marina Potapova - August 2011
Length Range: 27-46 µm
Width Range: 9.5-14 µm
Striae in 10 µm: 9-11 dorsal in the center valve, 12-13 at apices

Description

Valves are slightly dorsiventral, with slightly protracted apices. The dorsal margin is strongly arched and the ventral margin is moderately convex. The central area is small and elliptical. Two (sometimes three, and rarely one or four) stigmata are present at the end of the middle striae. The proximal raphe ends have central pores that curve to the ventral margin. The raphe is lateral, becoming filiform near the distal end. Striae are radiate. The areolae are apically elongated and number 22-24 in 10 μm.



Original Description

Basionym: Cymbella turgidula
Author: Grunow in Schmidt et al. 1875
Length Range: µm
Striae in 10 µm:

Original Description

Original Images


Cite This Page:
Potapova, M. (2011). Cymbella turgidula. In Diatoms of the United States. Retrieved December 08, 2016, from http://westerndiatoms.colorado.edu/taxa/species/cymbella_turgidula

Species: Cymbella turgidula

Contributor: Marina Potapova

Reviewer: Sarah Spaulding

Citations

Krammer, K. (2002). The genus Cymbella. Diatoms of Europe. Diatoms of the European Inland Waters and Comparable Habitats 3: 1-584.

Tuji, A. (2007). Type examination and typification of Cymbella affinis Kutz., C. turgidula Grunow and C. uenoi Skvotsov. Diatom 23: 49-54.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Cymbella turgidula CAS

North American Diatom Ecological Database (NADED)

NADED ID: 23083

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

Cymbella turgidula


EMAP Response Plots

Cymbella turgidula


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.