Today, I collected water samples to study the diversity of cyanobacteria found in the water column of Lake Fryxell. The water is sampled through a hole in the ice. We are very lucky the hole is covered by a heated tent, which makes it a lot easier.
The phytoplankton biomass is concentrated on a filter. Some of the filters turned orange and brown because of the pigments of the phototrophic microbial community. After my return to the NHM, I will extract the DNA in order to characterise the cyanobacterial diversity.
Water filtration set-up
Water filter coloured by the pigments of the phototrophic microbes in Lake Fryxell water
.....and a little quiz: What is wrong in the following pictures?