Melosira arctica Dickie 1852

Resting spores. Lugol sample (BF)


Life-form: Cells united in chains, pelagic or on ice

Size: Diameter: 10-50 µm

Resting spore: +

Note: The Baltic material is referred to a special form or variety (Syvertsen & Hasle 1988)

Distinctive features: Collar close to valve apex

Similar species:

Distribution: Arctic, Oslofjorden, Gullmarsfjorden, Baltic

Hasle, G. R. & Syvertsen, E. E. 1996. Marine diatoms. In: Tomas, C. R. (ed.) Identifying marine diatoms and dinoflagellates. Academic Press, Inc., San Diego, p. 5-385.

Heimdal, B. R. 1973. The fine structure of the frustules of Melosira nummuloides and M. arctica (Bacillariophyceae). Norw. J. Bot. 205: 139-149.

Syvertsen, E. E. & Hasle, G. R. 1988. Melosira arctica in the Baltic Sea and in the Oslofjord (a preliminary note). USDQR Report 12: 79-84

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Last modified on 15 September, 2006

Swedish Meteorological and Hydrological Institute

Department of Marine Ecology, Göteborg University, Sweden