Marine oil snow formation in microcosm incubations of artificial seawater at 4 °C

Nutrient plus dispersant addition in 4 °C dark microcosms rapidly formed marine oil snow within 30 minutes, accelerating early succession during crude oil and diesel degradation.

• Why it matters: Arctic sea-ice loss increases oil-spill vulnerability, and microorganisms likely initiate contamination response; tailored bioremediation needs early-process knowledge under cold conditions.
• What they did: Microcosms of artificial seawater at 4 °C in the dark were incubated with crude oil or diesel, with NaNO3 and KH2PO4 biostimulation and soy lecithin-Tween 80 as a dispersant, plus fresh versus weathered oil and varying oil concentrations.
• The result: The combined nutrient-dispersant treatment produced the earliest MOS formation and promoted earlier oil-degrading taxa, while hydrocarbon-degrader communities differed between fresh and weathered diesel and varied with oil concentration.

AI summary of the abstract · may contain errors · not medical advice · read the paper.