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.


 

Navicula nunivakiana

Actinella

GENERA
141 Completed
14 Underway
155 TOTAL
SPECIES
549 Completed
144 Underway
693 TOTAL

Getting Started

About this website

What are diatoms?

Identify your taxa


Special News

25 March, 2011

Information for new contributors


News

16 January, 2013

50th Anniversary of the Diatom Clinic

02 December, 2012

2013 North American Diatom Symposium, 13-17 August

More news...


Projects

Diatoms of North-Central Pennsylvania

Atmospheric deposition of nitrogen and its effects on diatoms

Renovation and computerization of ANSP Diatom Herbarium

More projects...