“Mangrove Species Density and Dynamics of Nitrate (NO3) on Sediments in the Manumadehe Island, South Jailolo District, West Halmahera Regency”, J. Agro. & Fish, vol. 15, no. 2, pp. 370–380, Oct. 2022, doi: 10.52046/agrikan.v15i2.1216.