Halamphora veneta

(Kützing) Levkov 2009      Category: Asymmetrical biraphid
BASIONYM: Amphora veneta Kützing 1844

Halamphora thumensis

 

Hannaea arcus

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Joshua Stepanek | Pat Kociolek - January 2011
Length Range: 10-40 µm
Width Range: 3.5-6 µm
Striae in 10 µm: 20-25 in central area, 27-30 at the ends

Description

Valves are semi-lanceolate and strongly dorsiventral, with a smoothly arched dorsal margin and a straight to slightly concave ventral margin. Valve ends are rostrate and ventrally curved. The raphe is positioned near the ventral margin, and is straight or with a slight curve dorsally moving from the poles to the central area. Proximal raphe endings are straight or with a slight dorsal deflection. The axial area is narrow, and more prominent on the ventral side. Dorsal and ventral fascia are absent. Dorsal striae are distinctly punctate, more so in the central area, and radiate throughout. Ventral striae are composed of a continuous row of short striae near the valve margin. The ventral striae are often difficult to resolve in the LM depending on the valve angle.



Original Description

Basionym: Amphora veneta
Author: Kützing 1844
Length Range: µm
Striae in 10 µm:

Original Description

Original Images


Cite This Page:
Stepanek, J., and Kociolek, P. (2011). Halamphora veneta. In Diatoms of the United States. Retrieved October 24, 2014, from http://westerndiatoms.colorado.edu/taxa/species/Halamphora_veneta

Species: Halamphora veneta

Contributor: Joshua Stepanek | Pat Kociolek

Reviewer: Rex Lowe

Citations

Kützing, F.T. (1844). Die kieselschaligen Bacillarien oder Diatomeen. Nordhausen. 152 pp., 30 pls.

Levkov, Z. (2009). Amphora sensu lato. In Diatoms of Europe, Volume 5. (H. Lange-Bertalot, ed). A.R.G. Gantner Verlag K.G. 916pp.

Patrick, R.M. and Reimer, C.W. (1975). The Diatoms of the United States, exclusive of Alaska and Hawaii, V. 2. Monographs of the Academy of Natural Sciences of Philadelphia 13.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Halamphora veneta CAS

North American Diatom Ecological Database (NADED)

NADED ID: 7006

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

Halamphora veneta


EMAP Response Plots

Halamphora veneta


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.