Rachael Lappan^1,2, Alexi Besser³, Jon Lima-Zaloumis³, Elisse Magnuson⁴, Eloi Martinez-Rabert⁵, Laura Molares Moncayo^5,6, Jordan Thakar⁴, James Andrew Bradley^5,6, Jacqueline Goordial⁴, Elizabeth Trembath-Reichert³ and Chris Greening^1,7, (1)Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia, (2)School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC, Australia, (3)School of Earth and Space Exploration, Arizona State University, Tempe, United States, (4)School of Environmental Sciences, University of Guelph, Guelph, ON, Canada, (5)Aix Marseille Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France, (6)School of Biological and Behavioural Sciences, Queen Mary University of London, London, United Kingdom, (7)Securing Antarctica's Environmental Future, Monash University, Clayton, VIC, Australia