An Arctic sea ice spring bloom driven and dominated by Dinoflagellates - a harbinger of the future sea ice?

Through fi eld sampling of fi rst-year sea ice cores and subsequent analysis of physical and biogeochemical parameters, combined with amplicon sequencing of the 18S rRNA gene, we investigated the occurrence and implications of this signi fi cant dino fl agellate bloom, with a particular focus on Pol...

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Bibliographic Details
Published in:Frontiers in Marine Science
Main Author: Lund-Hansen, Lars Chresten
Format: Other/Unknown Material
Language:English
Published: Zenodo 2024
Subjects:
dinoflagellate
sea ice spring bloom
Phyto-PAM photobiology
chlorophyll a
nutrients
microbial community composition
ice core
Sea ice
Online Access:https://doi.org/10.3389/fmars.2024.1377819
Description
Summary:Through fi eld sampling of fi rst-year sea ice cores and subsequent analysis of physical and biogeochemical parameters, combined with amplicon sequencing of the 18S rRNA gene, we investigated the occurrence and implications of this signi fi cant dino fl agellate bloom, with a particular focus on Polarella glacialis. Our fi ndings reveal that high irradiances at the top of the ice core, coupled with elevated nutrient availability and warm ice conditions, are key drivers of this phenomenon, as elucidated by redundancy analysis.

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