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 979 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
06 August 2020
Diatom Web Academy
We are expanding the number of webinars in the Diatom Web Academy during the pandemic. Most sessions (but not all) will be recorded and can be...
04 August 2020
WEBINAR: The genus Eunotia
The genus Eunotia Description: The diatom genus Eunotia Ehrenberg is diverse in freshwaters worldwide, especially acidic, dystrophic or...
22 July 2020
WEBINAR: California Algal Assessment
California Algal Assessment Description: We recently completed the development of a statewide algal index for bioassessment applications in...
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.
