Taxon Contributors
Contributors produce comprehensive documentation on diatoms, leading to consistent and correct taxonomy.
diatoms.org
"Sellaphora eloranta group", which has variously been included in Sellaphora, Naviculadicta, Eolimna
Become a taxon contributor Learn more
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 166 genera completed to date.
Species
Identification guides, original descriptions, citations, autecological information and more for 1019 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
01 December 2021
REMINDER: ISDR meeting Thursday 2 December
Central European Time (CET): 14.00 Japan Standard Time (JST): 22.00 Mountain Standard Time (MST): 06.00 Central Standard Time (CST): 07.00...
Indiana Diatom Index StoryMap and Shiny App
The StoryMap summarizes the development of diatom indices in wadeable, perennial streams in Indiana. The Shiny app allows IDEM and their partners to...
26 November 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,...
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.
