Diatom identification guide & ecological resource

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

We aim to provide users 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.  

Our project organizer is creating composite illustrations for all taxa (examples to the right). For many species, environmental response plots and geographic distribution maps are included.

The editorial review board is ensuring the scientific merit of each submission and directing site development.