Spatial and Temporal Variations of Water Quality and Trophic Status in Sembrong Reservoir, JohorSyarifah Intan Najla Syed Hashim, Siti Hidayah Abu Talib and Muhammad Salleh AbustanE3S Web Conf., 34 (2018) 02015DOI: https://doi.org/10.1051/e3sconf/20183402015