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

(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 ?
The structure of the periphytic diatom assemblage, summarized by a NMDS, showed a separation only between sites studied (Figure 4a).
For more clues, the researchers zeroed in on the sites of ROS production in diatoms: the photosynthesizing organelles called chloroplasts, which harvest the sun's energy and produce ROS as a byproduct.
Diatoms and testaceous amoebae are free-living, calcareous protists 2 to 2 000 pm in size (Licea et al., 1996; Moreno et al., 1997).
Effects of fundamental nutrient stresses on the lipid accumulation profiles in two diatom species Thalassiosira weissflogii and Chaetoceros muelleri.
At the time of sampling, the carapaces of all turtle species had not been cleaned by station staff for about a month, thus allowing sufficient time for diatom colonization (Stevenson, Bothwell, Lowe, & Thorp, 1996).
[USA], Oct 21 ( ANI ): According to a recent study, unicellular diatoms are able to adapt their behaviour to different external stimuli based on an evaluation of their own needs.
normanii cell diameters from 15 permanent plates prepared for a diatom count as part of a published paleoenvironmental reconstruction for the CGSM lagoon (Velez, et al., 2014).
Researchers have previously found that diatoms and sponges (which build their skeletons from silica) gradually buried in ocean sediments since the last ice age have a different silicon isotopic signature to their modern-day relatives.
Three hundred early juvenile abalone (0.015 [+ or -] 0.0002 SE g [abalone.sup.-1]), which only ever had access to diatoms, were sampled before weaning.
Diatom Phaeodactylum tricornutum was grown till the late exponential phase [60].
The laboratory preparation of sediment samples for diatom analysis followed Battarbee (1986).
Diatom species identification was performed using micrographs, on the basis of flora reference [2, 25-28].