Sea-ice microbial community succession and the potential role of parasitoids in the maintenance of diversity.

ABSTRACT: Sea ice is a crucial, yet declining, habitat in high latitude ecosystems. Here we present a high-temporal resolution amplicon sequence data set collected during the vernal ice-algal bloom near Utqiaġvik, Alaska in 2021 to study sea-ice microbial dynamics. The ice-algal bloom peaked on May 8^th, reaching 46.6 mg chlorophyll a m^-2, and thereafter became limited by nitrate availability. A massive bloom of the oil-degrading bacterium, Oleispira (>80% relative abundance), coincided with the algal bloom raising questions about hydrocarbon exposure. The sea-ice algal bloom was dominated by diatoms, particularly Nitzschia spp., and transitioned into a flagellate dominated post-bloom community which aligned with melt-associated irradiance increase and nutri

SUBMITTER: Dilliplaine KB 

PROVIDER: S-EPMC12258719 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature