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Letter

Nature Geoscience 2, 349–354 (1 May 2009) | doi:10.1038/ngeo475

Metabolic variability in seafloor brines revealed by carbon and sulphur dynamics

Samantha B. Joye , Vladimir A. Samarkin , Beth! N. Orcutt , Ian R. MacDonald , Kai-Uwe Hinrichs , Marcus Elvert , Andreas P. Teske , Karen G. Lloyd , Mark A. Lever , Joseph P. Montoya & Christof D. Meile

Brine fluids that upwell from deep, hot reservoirs below the sea bed supply the sea floor with energy-rich substrates and nutrients that are used by diverse microbial ecosystems. Contemporary hypersaline environments formed by brine seeps may provide insights into the metabolism and distribution of microorganisms on the early Earth or on extraterrestrial bodies.