diatom


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di·a·tom

(dī'ă-tom),
An individual of microscopic unicellular algae, the shells of which comprise a sedimentary infusorial earth.
[G. diatomos, cut in two]

diatom

/di·a·tom/ (di´ah-tom) a unicellular microscopic form of alga having a cell wall of silica.

diatom

(dī′ə-tŏm′)
n.
Any of various microscopic one-celled or colonial heterokonts of the class Bacillariophyceae that are photosynthetic, have a silica cell wall made up of two interlocking parts, and form an important component of phytoplankton.

diatom

a member of the BACILLARIOPHYCEAE.
References in periodicals archive ?
In order to cover the productive season when diatom forming and retaining by dams occur, the sampling started in April and ended in November.
Substrate characteristics affect colonization by the bloom-forming diatom Didymosphenia geminata.
Benthic diatom samples were cleaned by the concentrated acid digestion method and were prepared on the permanent slides [14, 22,31].
I did an experiment with my WHOI colleagues Rob Olson and Heidi Sosik where I made time-lapse movies of diatom cells dividing, generation after generation.
Hard, corrugated plastic plates were prepared 3 days before the stocking date to allow sufficient diatom growth.
In June 2009, nine tip-up pools from Tribbetts Woods were visited to determine their diatom composition.
The diatom evidence described above indicates diatom succession of the Kasmu basin from marine to lacustrine environment and the Lohja basin from lagoonal to limnic environment.
Data on diatom assemblages in ecosystems with minimal human alteration can provide insights on diatom species characteristics, population and community interaction under low nutrient conditions.
This may sound far-fetched, but we have found changes of this magnitude in the biology of the North Atlantic, with a dramatic switch in the prevalence of dinoflagellates to diatoms - two groups which include many of the microscopic planktonic plants forming the base of the ocean's food chain.
Diatoms and their population distributions serve as indicators of water conditions and changes that might be taking place therein.
1981, "Genetic variability and differentiation in the temperature niche component of the diatom Thalassiosirapseudonana", Mar.
The open water communities, at nearly the same time, shift from a diatom to a euglenophyte-dominated community--as would be considered a typical seasonal community succession (Reynolds 1984).