Like plants, some bacteria and algae can get their energy from sunlight. They all have certain preferences for the colour of light, some like blue, others red light. They take over the colour and therefor you can also see red glaciers. And that’s why they have different dye-particles (pigments), which can be seen in the microscope.
This post is also available in: Deutsch
„Ancylonema“, this alga only grows on glacial ice. They colour the ice surface light grey.
Phototrophic bacteria &
Phototrophic bacteria and algae occur in alpine lakes, as well as on glacier surfaces. Their preferences for light of different wavelengths expresses in different pigmentations. One idea is to use a prism to create colourful projection surfaces that stimulate growth of different bacteria / algae species. Presentation of Engelmann’s bacterial experiment for the photosynthesis of algae filaments.
Institute of Botany (Kranner), Institute of Microbiology (Wagner)