Me Hp002 042618 Mix 020

The burgeoning new white consciousness about Black lives, though significant and encouraging, is not an ending, but a beginning. - Erin Aubry Kaplan

Me Hp002 042618 Mix 020

The burgeoning new white consciousness about Black lives, though significant and encouraging, is not an ending, but a beginning. - Erin Aubry Kaplan

Me Hp002 042618 Mix 020

Let us begin.

Me Hp002 042618 Mix 020

Let us begin.

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Diatoms of North America is a collaborative work in progress, growing and changing as science advances.

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Taxon Contributors

Contributors produce comprehensive documentation on diatoms, leading to consistent and correct taxonomy.

Neidium Hitchcockii Sem Me 10011 042618 Mix 020Small

Taxa by Morphology

New to diatoms? Jump into diatom identification using the visual key.

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Using diatoms in assessment? Specify the use of Diatoms of North America in contracts and task agreements.

What are Diatoms?

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

Genera

Classification information, citations, links and species listings for 164 genera completed to date.

Species

Species

Identification guides, original descriptions, citations, autecological information and more for 977 species and growing.

Contributors

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

Diatom Web Academy

We are expanding the number of webinars in the Diatom Web Academy during the pandemic. Most sessions (but not all) will be recorded and can be...

Biddulphia

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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.

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