CH4 and CO2 gas flow and metropolitan pollution relation: a study at flooded reservoirs Billings and Guarapiranga (São Paulo - SP)

• Grant number: 18/03972-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2018
• End date: January 31, 2019
• Field of knowledge: Engineering - Sanitary Engineering - Water Resources
• Principal Investigator: Roseli Frederigi Benassi
• Grantee: Erika Lisa Horiuchi
• Host Institution: Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas (CECS). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil

Abstract

The comprehension of the behavior of flooded areas has been challenging the scientific community due to the diversity of systems which could be framed as representatives of these ecosystems, to the great variability of hydrological conditions presented, to the extension and heterogeneity of its geographic distribution, all of which impact not only over ecological functions, but also on its usage, determined by the local economic activities attributed value. Based on the acknowledge of the numerous ecological functions, of the economical potencial of these areas and of its concern on the carbon cycle, the present research project has established as main goal the investigation of the relationship between the limnological miscellany, the seasonality and the main biochemical instruments which interfere on CH4 and CO2 gas flux on flooded areas of the river area of Billings and Guarapiranga Reservoirs (São Paulo Metropolitan Area, São Paulo, Brazil), under distinctive pollution stressed watercourses. Therefore, physical and chemical analysis will be accomplished on the aqueous sections and on the layer between water and atmosphere on different seasons, in order to measure autochthonous and allochthonous carbon amounts, as well as to understand the physical/chemical developments and, lastly, to investigate the circumstances which conduct these greenhouse gases fluxes on flooded areas under conditions of pollution at variance of levels. These results will allow the identification of the carbon flux contrasting pathways through flooded areas, and to estimate in which conditions the these reservoir areas behave as carbon source or diminisher and if the organic matter which develop greenhouse gases can be categorised as autochthonous or allochthonous.