Scenarios from the Eta Model on quality and hydrological quantity in the Atlantic Forest, Southern Brazil

Cenários do modelo Eta na qualidade e quantidade hidrológica na Mata Atlântica, Sul do Brasil

ABSTRACT

This work evaluated the response of two scenarios (4.5 and 8.5) of the Eta Model on the quality (sediment - TSS, nitrate - NO₃^- and phosphate - PO₄^3-) and quantity (flow - Q) of the Concordia Catchment in the Atlantic forest biome. The importance of the work lies in the comparison of both scenarios until 2099, using current agricultural practices (2016). The SWAT model normally used for hydrological purposes has been applied to evaluate water quality from the monitoring programme database (2010-2014). Q showed a non-accentuated, upward trend. Modifications in Q were transmitted to TSS and PO₄^3-. There was no significant difference between the tested scenarios.

Keywords:
Temporal variations; Hysteresis; Soil management