Krammer and Lange-Bertalot 1987 Category: Surirelloid
BASIONYM: Surirella brebissonii Krammer and Lange-Bertalot 1987
REPORTED AS: Surirella ovata (Hustedt 1930)
The heteropolar valves are 15.5-56 µm long by 10-25 µm wide. The headpole is broadly rounded and the footpole is cuneately rounded. In valves shorter that 30 µm, the footpole becomes broadly rounded as well, however it remains slightly narrower than the head pole. The valves are slightly concentrically undulate. The costae extend from the margins to the apical axis with 18-23 in 10 µm. Every third or fourth costa on the valve face is raised above the others and corresponds to the fibula on the valve interior. The fibulae are marginal and have a density of 5-6 in 10 µm.
Krammer & Lange-Bertalot (1987) note that there are 3-4 portulae on the mantle face between the fibulae.
Basionym: Surirella brebissonii
Author: Krammer and Lange-Bertalot 1987
Length Range: 16-70 µm
Width Range: 16-30 µm
Striae in 10 µm: (16)17-19
Surirella brebissonii nov.spec. (Figs 1(ov2), 4,4,9,21-33)
Surirella ovata var. marina Brebisson 1867 in Rabh. Alg. Eur., no. 2011 Surirella ovata sensu Hustedt 1930, figs 863,864 valvae ovat-ellipticae vel late ovatae, a latere primario cuneata, a latere secundario rotundata, 16-70 µm longae, 16-30µm latae. Costae marginales 35-60/100 µm, striae transapicales (16)17-19/10 µm. Apical axis of the frustules heteropolar, girdle view slightly cuneiform. Larger valves linear-ovate, the smaller ovate and the smallest broadly elliptical to nearly round. In large forms on end is cuneately rounded, the other broadly rounded; in smaller forms both ends are almost equally rounded. Length 16-70µm, breadth 16-30 µm. Inner wall of the raphe canal with 3-4 portulae between two adjacent fibulae (in one interfibular space). Valve face concentrically undulate, the middle of the valve having a shape like a saddle roof. Pseudoinfundibula arranged in a marginal zone, the number/100 µm conforming to the number of fibulae. Between the pseudoinfundibula and the saddle roof a depression runs parallel to the outline of the valve. Axial area narrow, linear or narrower to broader lanceolate; all other parts of the valve are covered with small waves (in LM 'striae'), (16)17-19/10 µm, each of them with 2-4 rows areolae. Holotypus: Coll. Krammer P 1107A (Figs 21-26) Type Locality: Falaise, (Material of Brebisson) Distribution: Cosmopolitan, common in fresh water of moderate to high electrolyte content; frequently abundant also in brackish waters by sea coasts.
Cite This Page:
English, J., and Potapova, M. (2011). Surirella brebissonii. In Diatoms of the United States. Retrieved May 18, 2013, from http://westerndiatoms.colorado.edu/taxa/species/surirella_brebissonii
Species: Surirella brebissonii
Reviewer: Rex Lowe
Krammer, K. and Lange-Bertalot, H. (1988). Bacillariophyceae. 2. Teil: Bacillariaceae, Epithemiaceae, Surirellaceae. In: Ettl, H., J. Gerloff, H. Heynig and D. Mollenhauer (eds.) Susswasserflora von Mitteleuropa, Band 2/2. Gustav Fisher Verlag, Jena.
Krammer, K. and Lange-Bertalot, H. (1987). Morphology and taxonomy of Surirella ovalis and related taxa. Diatom Research 2: 77-95.
Sampling for 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). Streams and rivers in 12 western states (Arizona, California, Colorado, Idaho, Montana, Nevada, North Dakota, Oregon, South Dakota, Utah, Washington and Wyoming). Over 1200 sites on 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.
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.