A boundary called a chemocline
separates freshwater at the surface from deeper, denser fluids containing dissolved minerals and gases.
possible role of particulate shuttles, position and stability of the chemocline
in the enrichment environment, influence of microbial mediation, bioturbation and redeposition.
Close interval sampling of migrating Chaoborus larvae across the chemocline
of meromictic Lake Fidler, Tasmania.
The few dissolved sulfates that wash in are consumed by chemical reactions that occur within the chemocline
, the thin layer of water that separates the oxygenated surface waters from the anoxic depths.
Sulfur-oxidizing epibacteria have been found on nematodes living in marine sands, at the oxic-anoxic interface; the nematodes appear to derive their nutrition by feeding directly on their symbionts, and they track the chemocline
(chemical gradient in the water column) to provide their symbionts with both sulfide and oxygen.