Benthic diatom (Bacillariophyta) flora of Torch Lake, Michigan, an oligotrophic, alkaline ecosystem with evident benthic diatom production, with a consideration of some new and interesting species

TitleBenthic diatom (Bacillariophyta) flora of Torch Lake, Michigan, an oligotrophic, alkaline ecosystem with evident benthic diatom production, with a consideration of some new and interesting species
Publication TypeJournal Article
Year of Publication2021
AuthorsKociolek J.P., Lowe R.L., Sanchez K., Stepanek J.G.
JournalThe Great Lakes Botanist
Volume60
Issue1-2
Start Page24
Date Published06/2021
ISSN2573-4172
Abstract

A survey of the diatom flora of Torch Lake in northern lower Michigan was conducted. Torch
Lake is oligotrophic and has been experiencing increased growth of littoral zone algae. Diatoms were
collected and analyzed as part of a larger study in 2014. 176 diatom taxa were recorded. We present
detailed light and scanning electron microscopy observations on 11 taxa, six of which are species
new to science, three of which are new reports from the United States, and one of which is given a
new name. The new species are Fragilaria pettyorum, Gomphonema melfii, Cymbella torchiana,
Epithemia antrimiana, Nitzschia michiganiana, and Cymatopleura narwoldorum. Encyonema
evergladianum is transferred to the genus Encyonpsis resulting in the new combination Encyonopsis
evergladianum. The diatom flora of Torch Lake is similar to that of large alkaline, oligotrophic lakes
in Europe, and has several species in common.

URLhttp://hdl.handle.net/2027/spo.0497763.0060.104
Related research sites: