Friedrich, J. Swiss Federal Institute of Environmental Science and Technology, Limnological Research Centre, jana.friedrich@eawag.ch
Zepp, K. Swiss Federal Institute of Environmental Science and Technology, Limnological Research Centre, zepp@eawag.ch
Pimenov, N. Institute of Microbiology, Russian Academy of Science, pimenov@imbran.msk.su
Wehrli, B. Swiss Federal Institute of Environmental Science and Technology, Limnological Research Centre, wehrli@eawag.ch

 
BIOGEOCHEMICAL AND MICROBIAL PROCESSES AT THE AEROBIC-ANAEROBIC INTERFACE OF THE BLACK SEA
 
The aerobic-anaerobic interface of the Black Sea is the most active zone of microbial autotrophic production of organic matter. At this redox cline, reduced compounds like H2S, CH4, NH4, H2 diffusing from the anaerobic zone meet oxygen. These compounds represent the reduced forms of the terminal electron acceptors of the anaerobic microbial decomposition of organic matter. At the interface, where oxygen is present, they can act as electron donor for chemoautotrophic bacteria, forming bacterial biomass by CO2 fixation. However, little is known about the fate of this organic matter in the Black Sea. For that reason, the vertical distribution of oxygen, nutrients, hydrogen sulfide, methane, redox sensitive metals and the microbial population were measured at the oxic/anoxic interface of the water column in the western and eastern basin of the Black Sea.
 
Day: Wednesday, Feb. 3
Time: 12:00 - 12:15pm
Location: Hilton of Santa Fe
 
Code: SS38WE1200H