Vertical transport of sediment-associated metals and cyanobacteria by ebullition in a stratified lake.

ABSTRACT: Bubbles adsorb and transport particulate matter both in industrial and marine systems. While methane-containing bubbles emitted from anoxic sediments are found extensively in aquatic ecosystems, relatively little attention has been paid to the possibility that such bubbles transport particle-associated chemical or biological material from sediments to surface waters of freshwater lakes. We quantified transport of particulate material from sediments to the surface by bubbles in Upper Mystic Lake, MA and in a 15 m tall experimental column. Vertical particle transport was positively correlated with the volume of gas bubbles released from the sediment. Particles transported by bubbles originated almost entirely in the sediment, rather than being scavenged from the water column. Concentrations

SUBMITTER: Delwiche K 

PROVIDER: S-EPMC7558813 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature