Oktiyas Muzaky Luthfi, R.M. Agung M. Rizqon Sontodipoero
Coral Porites lutea was cosmopolite coral that can be found infringing reef area of South Java Sea. The environment was predicted as factors can control of coral growth. In this research, we choose the different environments that used as a utilization area (Sendang Biru) and non-utilization area (Kondang Merak). Four colonies of P. lutea with 40 cm in diameter was carried out from these areas. This research was to know the linear growth rate of massive P. lutea in two locations through the coral annual band. The result showed that coral from Sendang Biru have average of growth rate for 1.09 ± 0.29 cm/year (SB1); 1.15 ± 0.31 cm/year (SB2); 1.15 ± 0.31 cm/year (SB3); 1.2 ± 0.42 cm/year (SB4), while in Kondang Merak sequentially from KM1-KM2 were 0.63 ± 0.19 cm/year; 0.4 ± 0.1 cm/year; 0.55 ± 0.14 cm/year; and 0.68 ± 0.23 cm/year. Coral growth rate can be determined as two conditions, they were: linear extension rates that measurement as cm/year and calcification rate that the mass of aragonite deposit in unit area or can be measured as g/cm2/year. The environment such as turbidity of water, wave or hydraulic energy and sedimentation rate were suggested have played in the difference of coral growth rate. © 2018 Author(s).
Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Brawijaya University, Jalan Veteran, Malang, East Java, 65145, Indonesia
