Psammothidium acidoclinatum

(Lange-Bert.) Lange-Bert. 1996      Category: Monoraphid
BASIONYM: Achnanthes acidoclinata Lange-Bert. in Lange-Bert. and Metzeltin 1996

Prestauroneis protracta

 

Psammothidium alpinum

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Marina Potapova - August 2010
Length Range: 8-16 µm
Width Range: 4.4-5.8 µm
Striae in 10 µm: 23-27

Description

Valves are elliptic-lanceolate to linear-elliptic. The raphe valve has a linear axial area, which widens toward the center of the valve, and a transversely elliptic central area. The raphe is straight, without terminal fissures. The central and terminal raphe ends are simple. The central raphe ends curve toward opposite sides internally. The rapheless valve has a wide rhomboid-lanceolate axial area. The central area is usually not differentiated from the axial area. Striae are radiate on both valves, 23-27 in 10 µm. One row of areolae is present on the mantle of both valves. The external openings of the areolae are small, circular.



Original Description

Basionym: Achnanthes acidoclinata
Author: Lange-Bert. in Lange-Bert. and Metzeltin 1996
Length Range: 8-14(16) µm
Width Range: 4-7 µm
Striae in 10 µm:

Original Description

Original Images


Cite This Page:
Potapova, M. (2010). Psammothidium acidoclinatum. In Diatoms of the United States. Retrieved April 21, 2018, from http://westerndiatoms.colorado.edu/taxa/species/psammothidium_marginulatum

Species: Psammothidium acidoclinatum

Contributor: Marina Potapova

Reviewer: 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 Metzeltin, D. (1996). Indicators of oligotrophy - 800 taxa representative of three ecologically distinct lake types, Carbonate buffered - Oligodystrophic - Weakly buffered soft water. Lange-Bertalot, H. (ed.), Iconographia Diatomologica. Annotated Diatom Micrographs. Vol. 2. Ecology, Diversity, Taxonomy. Koeltz Scientific Books. Königstein, Germany, 2:390 pp.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Psammothidium acidoclinatum CAS

North American Diatom Ecological Database (NADED)

NADED ID: 186005

Autecology Discussion

Common in soft acidic waters.

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

Psammothidium acidoclinatum


EMAP Response Plots

Psammothidium acidoclinatum


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.

 

March 28, 2018 - Change in name

Prior to this date, this taxon appeared under the name Psammothidium marginulatum. It was updated to conform to Lange-Bertalot & Metzeltin (1996).