Nupela impexiformis

(Lange-Bertalot in Lange-Bertalot and Krammer) Lange-Bertalot 1999      Category: Symmetrical biraphid
BASIONYM: Achnanthes impexiformis Lange-Bertalot in Lange-Bertalot and Krammer 1989

Nupela frezelii

 

Nupela lapidosa

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Marina Potapova - March 2011
Length Range: 14-17 µm
Width Range: 3.8-4.6 µm
Striae in 10 µm: 44-50

Description

Valves are elliptical-lanceolate with capitate ends. Striae are radiate, rarely discernible in LM. Axial area is linear-lanceolate. Central area is large, asymmetrical, reaching valve margin on one side of the valve. The raphe is absent on one of the valves. The raphe is straight. External proximal raphe ends are simple or slightly expanded.



Original Description

Basionym: Achnanthes impexiformis
Author: Lange-Bertalot in Lange-Bertalot and Krammer 1989
Length Range: 12-16 µm
Width Range: 3.5-4.5 µm
Striae in 10 µm: 45-55

Original Description

Original Images


Cite This Page:
Potapova, M. (2011). Nupela impexiformis . In Diatoms of the United States. Retrieved December 10, 2016, from http://westerndiatoms.colorado.edu/taxa/species/nupela_impexiformis

Species: Nupela impexiformis

Contributor: Marina Potapova

Reviewer: Sam Rushforth, Sarah Spaulding

Citations

Lange-Bertalot, H. (1999). Neue Kombinationen von taxa aus Achnanthes Bory (sensu lato). Iconographia Diatomologica 6: 276-289.

Lange-Bertalot, H. and Krammer, K. (1989). Achnanthes eine Monographie der Gattung mit Definition der Gattung Cocconeis and Nachtragen zu den Naviculaceae. Bibliotheca Diatomologica 18, 393 pp. Cramer, Berlin, Stuttgart.

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

Nupela impexiformis CAS

North American Diatom Ecological Database (NADED)

NADED ID: 92015

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

Nupela impexiformis


EMAP Response Plots

Nupela impexiformis


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.