Seasonal and temporal variation in water quality from one point at Gameleiras’ stream using robust chemometric techniques

ABSTRACT

Gameleiras’ stream is a tributary of the Volta Grande reservoir and has been affected by eutrophication and “bloom” of algae due to increased phosphorus rates and other contaminants received via its tributaries. This research aimed at evaluating the seasonal and temporal variation of water quality at a spot at the stream, near the reservoir, from 1998 to 2014. Robust statistical techniques, such as cluster analysis and time series, were employed.

Keywords:
chemometrics robust; SARIMA models; water quality; Gameleiras’ stream