(Grunow) Grunow 1880 Category: Symmetrical biraphid
BASIONYM: Stauroneis reinhardti Grunow 1860
Contributor: Loren Bahls - November 2011
Length Range: 34-48 µm
Width Range: 14.5-17.0 µm
Striae in 10 µm: 8-9
Valves are elliptical with broadly rounded ends. The axial area is narrow and the central area is transverse, formed by alternating short and long striae. The raphe is filiform and the raphe branches are nearly straight. Proximal raphe ends are straight, small and bulbous. The striae are wide and radiate, becoming nearly parallel at the ends. Areolae in the striae are coarse (23-24 in 10 microns) and easily distinguished in LM.
Basionym: Stauroneis reinhardti
Author: Grunow 1860
Length Range: µm
Striae in 10 µm:
Grunow, A. (1860). Uber neue oder ungenügend gekannte Algen. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wein, 10: 503-582.
Grunow, A. (1880). Bemerkungen zu den Diatomeen von Finnmark, dem Karischen Meere und vom Jenissey nebst Vorarbeiten für Monographie der Gattungen Nitzschia, Achnanthes, Pleurosigma, Amphiprora, Plagiotropis, Hyalodiscus, Podosira und einiger Navicula-Gruppen. Kongliga Svenska Vetenskaps-Akademiens Handligar, ser. 4, 17(2): 16-121; pls. I-VII.
Krammer, K. and Lange-Bertalot, H. (1986). Bacillariophyceae. 1. Teil: Naviculaceae. In: Ettl, H., J. Gerloff, H. Heynig and D. Mollenhauer (eds.) Süsswasserflora von Mitteleuropa, Band 2/1. Gustav Fisher Verlag, Jena. 876 pp.
Lange-Bertalot, H. (2001). Navicula sensu stricto, 10 genera separated from Navicula sensu lato, Frustulia. Diatoms of Europe 2: 1-526.
Patrick, R.M. and Reimer, C.W. (1966). The Diatoms of the United States exclusive of Alaska and Hawaii, V. 1. Monographs of the Academy of Natural Sciences of Philadelphia 13.
Van Heurck, H. (1880). Synopsis des Diatomées de Belgique. Atlas. Ducaju & Cie., Anvers.
Navicula reinhardtii has been collected from seven locations in the Northwest, all of them lakes or rivers below lakes and reservoirs. Four of these collections are from Montana with one each from Alberta, North Dakota, and South Dakota. The pH of these waters is 8.30-8.58 and specific conductance is 122-487 µS/cm. Patrick and Reimer (1966) report this species as widely distributed in fresh water of high mineral content or in slightly brackish water. Populations of Navicula reinhardtii are typically very small.
Bowman Lake, Glacier National Park, Montana: Home of Navicula reinhardtii.
Credit/Source: Loren Bahls
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.
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.