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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 sampling




Niskin bottle



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?


Anne D Jungblut

Anne D Jungblut

Member since: Sep 2, 2010

I'm Anne Jungblut from the Botany Department. Join me as I head to Antarctica to study cyanobacterial diversity in ice-covered lakes of the Dry Valleys and Ross Island where already scientists on Scott's and Shakleton's expeditions made many discoveries.

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