Estimation of Carbon Storage in Necromass in the Mangrove Area of Kayu Ara Permai Village, Siak Regency Ezra Yehezkiel Rumegius Simanjuntak ; Yusni Ikhwan Siregar ; Sofyan Husein Siregar Journal of Coastal and Ocean Sciences 2 Okt 2026 10.31258/jocos.7.2.73-78