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. 2023;1(2):107-116. doi:10.30872/jipt.v1i2.429