Preliminary assessment of estuary environment, study case: Pangeranan estuary, Bangkalan RegencyMertiara Ratih Terry Laksani, Achmad Fachruddin Syah, Annisa Arrayanul Jannah and Fadrika Aksania TaqwinBIO Web Conf., 188 (2025) 04009DOI: https://doi.org/10.1051/bioconf/202518804009