Bacillaria paradoxa

Gmelin 1788      Category: Nitzschioid
BASIONYM: Bacillaria paradoxa Gmelin 1788

Aulacoseira valida

 

Biremis circumtexta

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Pat Kociolek - March 2011
Length Range: 68-102 µm
Width Range: 5.5-6.5 µm
Striae in 10 µm: 19-24

Description

Living cells occur in long chains, connected along their keels. Valves are isopolar, linear to linear-lanceolate and sometimes with slightly undulate margins tapering to narrow apices. The characteristic placement of the keel in the center of the valve distinguishes this genus from others in the Bacillariales. Keel puncta are rectangular, but not regular in shape and number about 6-10 in 10 µm. Striae are distinct, parallel, perpendicular to the keel, and number 19-24 in 10 µm.



Original Description

Basionym: Bacillaria paradoxa
Author: Gmelin 1788
Length Range: µm
Striae in 10 µm:

Original Description

Original Images


Cite This Page:
Kociolek, P. (2011). Bacillaria paradoxa. In Diatoms of the United States. Retrieved September 30, 2014, from http://westerndiatoms.colorado.edu/taxa/species/bacillaria_paradoxa

Species: Bacillaria paradoxa

Contributor: Pat Kociolek

Reviewer: Sam Rushforth

Citations

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Bacillaria paradoxa CAS

North American Diatom Ecological Database (NADED)

NADED ID: 76001

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

Bacillaria paradoxa


EMAP Response Plots

Bacillaria paradoxa


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.