2014 · 39 citations · 0 references
Ocean acidification afected marine organisms especially calcifying organisms, such as Halimeda sp. This \nstudy was conducted on June to September 2012 at laboratory of Research Center and Development for Marine, \nCoastal and Small Islands, Hasanuddin University. The aim of study to determine the efect of acidic level on \nCalcium concentration and growth rate of calcifying macroalgae, Halimeda sp. The experiment design was used \ncompletely random design with three treatments and three replicates. Analysis variance was used for data \nanalysis with advanced respon test. Tukey test was used to compare the diference between treatments. Water \nquality parameters were analyzed descriptively. The results showed that there was a significant diference of pH \ntreatments on calcium concentration and growth rate of Halimeda sp. The highest calcium concentration was \nfound at pH 8. In conclusion, increasing pH level of media disturbed the calcifying process of Halimeda sp \nespecially at pH level of 6, while growth rate of Halimeda sp was not afected wit h the decreasing of pH.