ACL: Advent of Complex Life - MIT Astrobiology Team

Julio Sepúlveda 
Massachusetts Institute of Technology
42-44 Carleton Street
Cambridge, MA 02139 USA
Tel.: 617-324-3954 
E-mail: juliosep at mit dot edu

Julio Sepúlveda is a postdoctoral associate in the Department of Earth, Atmospheric, and Planetary Sciences at the Massachusetts Institute of Technology. He received his Ph.D. in Marine Geosciences from the University of Bremen, Germany, and his B.Sc. in Marine Biology and Oceanography, and M.Sc. in Oceanography from the University of Concepción, Chile. 

Julio Sepúlveda’s research focuses on studying how biotic and abiotic processes control carbon and nutrient cycling in modern and ancient environments. By deciphering the biogeochemical and isotopic information encoded in organic molecules from environmental and geological samples, he aims to better understand how marine microorganisms and ecosystems respond to environmental disruptions such as oxygen depletion and mass extinction events. Recent and current research has focused on the biogeochemistry and microbial ecology of modern oxygen minimum zones and their ancient counterparts during the Cretaceous Period (oceanic anoxic events), the ecological and biogeochemical reorganization following the Cretaceous-Paleogene mass extinction event, and multi-proxy climatic-oceanographic reconstructions over the last two millennia.