Taxon Contributors
Contributors produce comprehensive documentation on diatoms, leading to consistent and correct taxonomy.
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Diatoms of North America is a collaborative work in progress, growing and changing as science advances.
Taxa by Morphology
New to diatoms? Jump into diatom identification using the visual key.
Editorial Review Board
Using diatoms in assessment? Specify the use of Diatoms of North America in contracts and task agreements.
What are Diatoms?
Diatoms are single-celled algae that live nearly everywhere there is water - streams, ponds, lakes, oceans, and even soils.
For practitioners
Taxon
Identification Guide
Genera
Classification information, citations, links and species listings for 164 genera completed to date.
Species
Identification guides, original descriptions, citations, autecological information and more for 975 species and growing.
We encourage new contributors to submit taxon pages.
This project depends on many people to document the diverse diatom flora of streams, rivers, wetlands, lakes, springs, soils, estuaries and coastal zones.
Recent News & Projects
22 March 2020
Diatom Web Academy
We are expanding the number of Diatom Web Academy series during the pandemic. Each session will be recorded and can be accessed for later...
05 March 2020
Splendid cyanobacteria, spectacular diatoms
Apply now for the Freshwater Algal Identification Field Course at the scenic Fordham University field station. The course focuses on algal...
05 February 2020
Are you a motivated undergraduate student interested in diatoms?
Are you a motivated undergraduate student interested in aquatic research? You could spend ten weeks in the field and lab in the summer of 2020...
Diatoms of North America has been developed in part with the generous funding and support of US EPA, USGS, the Institute of Arctic and Alpine Research at University of Colorado Boulder and other organizations.
