High-Abundance Heterotrophic Bacteria Inhabit the 85° E Hydrothermal Plume of the Explosive Volcanic Zone at Gakkel Ridge, Arctic Ocean.

ABSTRACT: While under-ice submarine hydrothermal systems provide critical insights into extremophile adaptations, the ecological impacts of explosive volcanism on these ecosystems remain poorly constrained. We successfully detected evidence of hydrothermal activities and explosive volcanism at 85° E, the eastern volcanic zone, ultra-slow spreading Gakkel Ridge. Hydrothermal plume, surface sediments, and volcanic glass samples were systematically collected to investigate the diversity of microbial communities. Our results revealed two distinct microbial regimes in hydrothermal plume: (1) chemoautotrophic bacteria (Sulfurimonas and SUP05_cluster), prevalent in global basaltic hydrothermal systems, potentially involved in carbon fixation through the CBB and rTCA cycles and (2) Alcanivo

SUBMITTER: Yu J 

PROVIDER: S-EPMC12383903 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature