What is diatomaceous earth?

Diatomaceous earth, or diatomite, is composed by the silica cell walls of diatoms. There are many deposits of diatomite in North America, both marine...

Diatomaceous Earth

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Ruth Patrick: The River Doctor

“To be a good biologist and make contributions you first have to learn one group of organisms in great depth.” - Ruth Patrick Dr. Patrick not only...

Planothidium Apiculatum Guide

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Diatom ecology in context

Hundreds of students in the Midwest states of Iowa and South Dakota have the opportunity to learn advanced topics in a unique setting, and many of...


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Diatoms and people…

....at the North American Diatom Symposium The 23rd NADS was held at the Central Michigan University Biological Station from 9-13 September on...

Img 2989

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Where do diatoms live?

Diatoms live in water, or even in moist habitats or soils. Some diatoms live as free-floating cells in the plankton of ponds, lakes and oceans....

Sage Clegg  Fischer Hot Spring  Odt

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A little slice of heaven

The first official meeting of the Phycological Research Consortium (PRC). was held May 11-15, 2015 at Iowa Lakeside Lab. The meeting consisted of...

Prc Buoy

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How do diatoms get big again?

Diatoms regain their maximum size through sexual reproduction and the formation of a special structure, termed an auxospore. An auxospore is a unique...

Yellowstone Lake

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How big are diatoms?

Nearly all diatoms are microscopic - cells range in size from 2 µm to 500 µm, that is, half of a millimeter. The biggest diatoms are about the width...

Heart Lake Wa

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EPA Office of Water Support

In September (16-20) 2014, members of the Editorial Review Board, Environmental Protection Agency representatives, academics and web designers joined...

Tetracyclus hinzii

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