Biorock® Technology Application to the Growth and Acropora Corals Growth Rate

Abstract

Karang Jeruk is one of the destinations for coral reef ecosystems in Tegal Regency. This study aimed to determine the growth and growth rate of branched coral Acropora transplanted using the biorock® method in Karang Jeruk Waters, Tegal Regency. The method used in this research is the method of experimentation and observation. It is then analyzed through the t-Students test using SPSS version 16. Based on the research results, the absolute growth of Acropora coral at the biorock® station was more significant than the absolute growth at the control station, both for height and diameter or significantly difference. It can be seen that the absolute height growth at the biorock® station is 44.9750 ± 15.3901 mm, while at the control station, 2.1675 ± 0.6726 mm, and the absolute diameter growth at the biorock® station is 0.8350 ± 0.2177 mm while at the control station 0 .2025 ± 0.0835 mm. The growth rate of Acropora coral at the biorock® station was faster than the growth rate at the control station, both for height and diameter. It can be seen that the high growth rate at the biorock® station is 11.2438 ± 3.8475 mm month-1, while at the control station, 0.5419 ± 0.1682 mm month-1, and the diameter growth rate at the biorock® station is 0.2088 ± 0.0544 mm month-1 while at the control station 0.0506 ± 0.0209 mm month-1.