Kloropil-A Gradien Longitudinal Di Sungai Mandau Kecamatan Sungai Mandau Kabu…

This research was conducted in October-November 2022 in the Mandau River Area, Mandau River District, Siak Regency, with the aim of knowing the longitudinal gradient of chlorophyll-a. The research station consists of 3 stations. Sampling was done 3 times with an interval of 1 week. Sampling of water quality parameters and chlorophyll-a samples were carried out simultaneously Water quality measu…