Saprobic Trophic Approach as a Biological Indicator for Eutrophication Management in Cengklik Reservoir, Boyolali, Central JavaNine Elissa Maharani, Sutrisno Anggoro and NurjazuliBIO Web Conf., 196 (2025) 01005DOI: https://doi.org/10.1051/bioconf/202519601005