Methanotrophic communities in ice

Vinter-is som dekker områder med klimagass kilder i Arktisk jord antas å inneha mikrobe samfunn som bruker gassene. Derfor kan disse mikrobene redusere utslipp av klimagasser til atmosfæren og påvirke vårt klima. Kunnskap om dette spesielle is-miljøet kan gi oss en bedre forståelse av tilpasninger til liv i minusgrader. I prosjektet er det samarbeid med astrobiologer som studerer planeter med is i vårt solsystem og det skal også bidra med utforskning av is-mikrober i disse unike miljøene.

The Methanotrophic communities in ice (METHANICE) project will identify the role of methane consuming microorganisms (methanotrophs) associated with terrestrial seasonal ice covering sub permafrost methane springs. Seasonal ice forms on top the springs during winter, trapping methane and carbon dioxide in a thick ice layer surrounding massive, pressurised aquifers oversaturated with greenhouse gases. While the aquifers are full of methanotrophs, it is still unknown whether they are present and active as biological methane filter within the ice during winter. Deep-sea engineer and astromicrobiologist will work together to detect and monitor the activity of these microbes. Through this, they will train themselves for the upcoming missions that will explore the icy moons of our solar system. After this first step, we will combine in-situ and laboratory experiment to understand if the ice-associated microbes can use the greenhouse gases trapped in the reservoir and therefore decrease their release toward the atmosphere. Furthermore, we will isolate these microbes to know their physiology and which mechanisms allow them to survive in this cold and oligotrophic environment.