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.
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.
Phaeodactylum tricornutum was grown till the late exponential phase .
The laboratory preparation of sediment samples for diatom
analysis followed Battarbee (1986).
species identification was performed using micrographs, on the basis of flora reference [2, 25-28].