Supply chain analysis of coral trout (Plectropomus leopardus) in simeulue regency: case study of production value and contribution of PiSiSi MPAMaria Ulfah, Amelia Rizki Ananda, Insyafrizal, Erdiansyah and IndraBIO Web Conf., 87 (2024) 03028DOI: https://doi.org/10.1051/bioconf/20248703028