How abundant are bacteria in terms of biomass?

[Doug Eernisse]

Sure, there are lots more bacterial cells out there than
eukaryotic cells, but how do they stack up relative to
important organisms such as diatoms, dinoflagellates, copepods,
etc., in terms of total biomass on Earth? Have there been
any estimates broken down according to the extant phylogenetic 
groups of bacteria?

-- 
Doug Eernisse <DEernisse at fullerton.edu>
Dept. Biological Sciences MH282
California State University
Fullerton, CA 92634