Abstract
The present project has as its objective the quantification of the emission of the principal greenhouse effect gases of biogenic origin (CH4, CO2 and N2O) in the water and in the sediment of the Barra Bonita, Bariri, Ibitinga and Promissão reservoirs, located in cascade in the middle Tietê river, State of São Paulo. It is intended to report on, twice a year (summer and winter), the trophi…