Received 11 May 1989. Accepted 7 September 1989.
SEA ICE DIATOMS (BACILLARIOPHYCEAE) OF THE CANADIAN ARCTIC. I. THE GENUS STENONEIS1
Article first published online: 28 OCT 2004
Journal of Phycology
Volume 26, Issue 1, pages 156–167, March 1990
How to Cite
Poulin, M. (1990), SEA ICE DIATOMS (BACILLARIOPHYCEAE) OF THE CANADIAN ARCTIC. I. THE GENUS STENONEIS. Journal of Phycology, 26: 156–167. doi: 10.1111/j.0022-3646.1990.00156.x
I would like to thank Dr. S. I. C. Hsiao, Arctic Biological Station, Department of Fisheries and Oceans, who kindly deposited his collections from the Canadian Arctic: at the Canadian Museum of Nature (CANA), Ottawa, Canada. I am greatly indebted to Dr. N. Lundqvist, Swedish Museum of Natural History, Stockholm, for a loan of slides from the Cleve Collection; Dr. C. W. Reimer, Academy of Natural Sciences, Philadelphia, for slides from the Cleve & Möller and the Schulze Collections; Drs. J. B. Hansen and R. Nielsen, Botanical Garden, Copenhagen, for slides from the Østrup Collection; Mr. T. B. B. Paddock, British Museum (Natural History), London, for a slide from the Greville Collection. I am very grateful to Dr. R. Simonsen for a profitable May at the Friedrich-Hustedt-Arbeitsplatz, Bremerhaven, which he enriched with helpful discussions. I finally thank Mr. R. Ross for his help in nomenclature and Dr. I. M. Brodo for reviewing the manuscript. Special thanks are due to Mr. P. B. Hamilton for his assistance in microscopic observations and to Dr. J. M. Taylor, Canadian Conservation Institute. Department of Communications, for the use of a scanning electron microscope.
- Issue published online: 28 OCT 2004
- Article first published online: 28 OCT 2004
- Canadian Arctic;
- sea ice diatoms;
- Stenoneis:Stenoneis inconspicua var. baculus;
- Stenoneis obtuserostrata comb, nov.;
Ice diatom assemblages in the Canadian Arctic are dominated by the Naviculaceae, a family which includes the genus Stenoneis Cleve. A taxonomic history of S. inconspicua var. baculus (Cleve) Cleve (including type material of Navicula baculus Cleve) is presented with morphological data including the first SEM views of the genus. Stenoneis inconspicua var. baculus was compared with S. obtuserostrata (Hustedt) comb. nov. (basionym: Navicula obtuserostrata Hustedt). In the SEM, external, short, flattened siliceous ridges were revealed beside the proximal parts of the raphe branches and central pores. This may be a significant taxonomic feature of the genus. Valves of S. inconspicua var. baculus ranged from 40–103 μm in length, 7–11 μm in width and had 17–20 striae in 10 μm, whereas valves of S. obtuserostrata were shorter (27–53 μm), narrower (6–7.5 μm) and more finely striated (24–30 in 10 μm). Both taxa have a circumpolar Arctic distribution.