Carbonate System Seasonal Behavior along a Southeastern Brazilian Estuarine-Lagoon Complex with Different Degrees of Anthropogenic Impacts on its Sectors
Carbonate System Seasonal Behavior along a Southeastern Brazilian Estuarine-Lagoon Complex with Different Degrees of Anthropogenic Impacts on its Sectors. Abstract This study aimed to understand the behavior of the carbonate system in the Cananéia-Iguape Estuarine-Lagoon Complexn (CIELC) to evaluate its potential as a source or sink for atmospheric CO2. This estuarine-lagoon complex is one of the most extensive in Brazil, more than 100 km long and covers protected and sparsely inhabited regions of the state of São Paulo. This system presents, in its southern portion, most preserved areas, and evident anthropogenic impact in the northern portion, where an artificial canal was created in the second half of the 19th century, with the aim of shortening the navigation path link the river to the estuarine system offering a passage to the sea, resulting in several modifications, both from a hydrodynamic and biogeochemical mechanisms. Sampling of salinity (S), temperature (T), total alkalinity...