Taxon Contributors
Contributors produce comprehensive documentation on diatoms, leading to consistent and correct taxonomy.
Diatoms of North America
Diatoms of North America
Diatoms of North America
Diatoms of North America
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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 165 genera completed to date.
Species
Identification guides, original descriptions, citations, autecological information and more for 1007 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
27 September 2021
What has changed?
Here, you can find links to archived genus and species pages: Achnanthidium kreigeri (prior_to_2021_09_01) Pinnularia polyonca (prior_to_2021_08)...
15 September 2021
Diatom Web Academy 2021
The Diatom Web Academy continues... Sessions are recorded and can be accessed for later viewing. You are invited to join us, wherever you may be,...
14 September 2021
How does diatoms.org differ from other important/valuable/commonly used online algal databases?
Diatoms of North America (diatoms.org) is a collaborative effort to discover and document the diversity of diatom species across the continent. This...
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.
