Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Salinity response curves of slurries with the three major phototrophic layers in the crust. The values on y axis are the fraction of [14C]bicarbonate tracer that was assimilated during incubation. Each point represents a single measurement. (a) Surface Halothece-dominated layer; (b) Halospirulina-Phormidium-dominated layer; (c) purple Chromatium-dominated layer.
