Both sites had Proteobacteria as the most abundant bacterial phyla, where the Deltaproteobacteria were more abundant at the geothermal site, and the Alphaproteobacteria at the biogenic site.
Þar sem gasið var af lífrænum uppruna var fylking Proteobacteria einnig í mestum mæli þar sem flokkur Alphaproteobacteria var ráðandi.