Differential aggregation of diatoms

Epipsammic diatoms of diatoms of Kelkit Creek (Tokat/Turkey)

In this study, diatoms in epipsammic samples, which were taken from two stations selected in Kelkit Creek (Tokat/Turkey) between March and December 2018, were analyzed. During the study, a total of 25 taxa belonging to diatoms were recorded. The diatom species represented by the highest number of taxa were Cymbela (4 taxa), Nitzschia (4 taxa), and Navicula (3 taxa). Sorensen similarity index be...

Interactive aggregation and sedimentation of diatoms and clay-sized lithogenic material

Monospecific diatom cultures (Thalassiosira punctigera and Skeletonema costatum) were incubated in rotating cylinders together with clay suspensions, present in a range of concentrations (5–100 mg kaolinite L21) and as different minerals (50 mg L21 kaolinite, smectite, illite, and clay-sized quartz powder). The addition of lithogenic suspensions to diatom cultures accelerated the formation of v...

[Diatoms in the diagnosis of drowning. I. Biology of diatoms].

The mysteries of the diatoms

Understanding the physiology of these unique and spectacularly successful algal species could lead to substantial benefits in a wide range of areas from nanotechnology to climate change. Michael Gross reports.

Cell coatings of surf diatoms

Many sandy beach surf-zones support characteristic accumulations of diatom cells appearing as dark brown patches at the water surface. These diatoms become buoyant during the day, adhering to air bubbles generated by wave action. This, together with water circulation patterns generated by rip currents results in the accumulation of diatoms. By late afternoon the cells lose buoyancy and the accu...