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New Diatom discovered in Lake Superior

In 2005 researchers described a new species of diatom, endemic only to Lake Superior and Lake Nipigon. The new diatom, called Hannaea superiorensis, wasn’t exactly "new" since it was formerly grouped with other diatoms found in cold, clear waters. It is much larger than those other diatoms, though. It looks like a tiny glass pine needle. The abundant H. superiorensis grows amongst other microscopic organisms in a brownish slime on submerged rocks.

Photo by Mark Edlund.

Source: Bixby, R.J., Edlund, M.B. and Stoermer, E.F. (2005) Hannaea superiorensis sp. nov., an endemic diatom from the Laurentian Great Lakes. Diatom Research 20(2): 227-240. (Published 02 November 2005) http://perma-guard.com/articles/New%20Diatom%20In%20Lake%20Superior.pdf


By Sea Grant Staff
January 2013

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