“Hubungan kerapatan tegakan lamun terhadap kelimpahan sand dollar (Laganum sp.) di padang lamun Pulau Derawan Kabupaten Berau: The relation between seagrass standing density and sand dollar (Laganum, sp.) abundance at seagrass beds, Derawan Island, Berau District”, jipt, vol. 1, no. 2, pp. 107–116, Jan. 2023, doi: 10.30872/jipt.v1i2.429.