Diatom identification guide & ecological resource

for water resource managers, ecologists, taxonomists, analysts, systematists, students, and the public.


We aim to provide everyone with accurate information about diatoms of the United States.


Expert contributors are submitting text and images for freshwater genera and North American species, including taxonomic and ecological information.


Diatom "bird guides" are included for all taxa (examples to the right). For many species, environmental response plots and geographic distribution maps are included.


Our editorial review board is prioritizing taxa for treatment in species pages and ensuring the scientific merit of each submission.

Cymbopleura anglica

Luticola

GENERA
148 Completed
23 Underway
171 TOTAL
SPECIES
681 Completed
149 Underway
830 TOTAL

Getting Started

About this website

What are diatoms?

Identify your taxa


Special News

25 March, 2011

Information for contributors


News

30 June, 2015

The Air You’re Breathing? A Diatom Made That

30 June, 2015

Education Connection: Project Periphyton

More news...


Projects

Ecology and Systematics of Diatoms course, 2014

Atmospheric deposition of nitrogen and its effects on diatoms

Craticula: a gothic horror?

More projects...