Heny Suseno1, Wahyu Retno Prihatiningsih1
1 Marine Radioecology Research Group, PTKMR -National Nuclear Energy Agency, Indonesia
Marine radioecology research group have performed marine radioecology research such as: monitoring radionuclides in marine environment, biokinetic experiment for determine capability of marine biota to bioaccumulated 137Cs and heavy metal (using radiotracer) and risk assessment that used the ERICA tool. The background our research are surface ocean CO2 partial pressure (pCO2) is also expected to increase in proportion to the atmospheric CO2 increase due to the oceanic uptake of anthropogenic CO2. Increasing pCO2 in the surface ocean causes major shifts in seawater carbonate chemistry (aragonite saturation) and is likely to reduce pH. Such acidification of surface waters could affect marine organisms and in particular those having carbonate skeleton such as corals, coralline algae, foraminifera and coccolithophores for which calcification rates may decrease. In addition to these biological effects, new data areemerging on the disturbances of physiological process such as growth, development, metabolism, ionoregulation andacid-base balance under elevated temperature and pCO2. The increasing release of CO2 by human activities leads to ocean acidification and global warming. Both those consequences (i.e., increase in seawater pCO2 and temperature) may drastically affect the physiology of marine organisms.
We are preparing to performed research influences of increasing of pCO2 in marine environment on the ability of bioaccumulation of contaminants by marine organism. We also have submitted national research competition with thematic of radiotracer application to study decline of calcinations process in coral due increasing pCO2 in surface seawater.