Effect of increased CO2 concentration on the growth rate of Isopora palifera and Acropora hyacinthus from different cross-shelf reef zones

MarSave International Symposium 2018: "Strengthening Marine Resilience for Sustainable Development Goals"

生态环境科学

Yusuf, M.Y.^1 ; Rukminasari, N.^1 ; Yanuarita, D.^1 ; Jompa, J.^1 ; Suharto^1

Faculty of Fisheries and Marine Science, Hasanuddin University, Makassar, Indonesia^1

关键词: Atmospheric carbon dioxide;    CO2 concentration;    Economic development;    Intermediate zone;    Ocean acidifications;    Research centres;    Research designs;    Scleractinian corals;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/253/1/012022/pdf
DOI  :  10.1088/1755-1315/253/1/012022

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The rise in atmospheric carbon dioxide (CO2) concentration due to emissions associated with economic development is altering ocean chemistry, a process known as ocean acidification. The resultant decrease in oceanic pH will affect marine organisms, in particular those which build their skeletons through calcification such as scleractinian corals. The aim of this research was to analyse the likely impact of changing CO2 concentrations and thus seawater pH on the growth rate of two common corals, Isopora palifera and Acropora hyacinthus. This research was conducted at the Marine, Coastal and Small Island Research Centre, Universitas Hasanuddin, Indonesia. Samples of Isopora palifera and Acropora hyacinthus were collected along an inshore-offshore cross-shelf gradient from 3 sites: Pulau Karanrang (inner zone), Pulau Badi (intermediate zone), and Pulau Kapoposang (outer zone). A fully randomised research design was used with three replicates for each of three CO2 treatments: 390 ppm (control), 550 ppm (2030 prediction), 1000 ppm (2050 prediction). The samples were weighed weekly for 1 month (digital balance, accuracy 0.1 mg). ANOVA analysis with post hoc Tukey Test showed a significant (p