PENGARUH DERAJAT KEASAMAN (pH) AIR LAUT TERHADAP KONSENTRASI KALSIUM DAN LAJU PERTUMBUHAN HALIMEDA SP
ABSTRACT: Ocean acidification
afected marine organisms especially calcifying organisms, such as Halimeda sp.
This study was conducted on June to September 2012 at laboratory of Research
Center and Development for Marine, Coastal and Small Islands, Hasanuddin
University. The aim of study to determine the efect of acidic level on Calcium
concentration and growth rate of calcifying macroalgae, Halimeda sp. The
experiment design was used completely random design with three treatments and
three replicates. Analysis variance was used for data analysis with advanced
respon test. Tukey test was used to compare the diference between treatments.
Water quality parameters were analyzed descriptively. The results showed that
there was a significant diference of pH treatments on calcium concentration and
growth rate of Halimeda sp. The highest calcium concentration was found at pH
8. In conclusion, increasing pH level of media disturbed the calcifying process
of Halimeda sp especially at pH level of 6, while growth rate of Halimeda sp
was not afected with the decreasing of pH.
Keywords: ocean acidification,
calcifying macroalgae, calcium concentration and growth rate of Halimeda sp
Penulis: Nita Rukminasari,
Nadiarti & Khaerul Awaluddin
Kode Jurnal: jpperikanandd140196
