Thursday, August 1, 2013

A Biological Example: A Centric Diatom

This image taken at 20 kV with secondary electrons shows the centric diatom cyclotella choctawhatcheeana Prasad in a presentation that resembles an exploded view. The topmost structure is the external surface of the valve. Behind it are the circumferential "girdles" and and the very bottom the internal surface of the valve. Identification of diatoms from their unique morphological signatures gives insight into the water chemistry and ecology of the water column through its annual cycle.

Thanks to Dr. A. K. S. K. Prasad of the FSU Department of Biology who discovered this particular diatom species.

No comments:

Post a Comment