Comparison of metal accumulation in the azooxanthellate scleractinian coral (Tubastraea coccinea) from different polluted environments |
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| Authors: | Isani Chan Jia-Jang Hung Shao-Hung Peng Li-Chun Tseng Tung-Yuan Ho Jiang-Shiou Hwang |
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| Institution: | 1. Institute of Marine Biology, National Taiwan Ocean University, Keelung, Taiwan;2. Department of Oceanography, Asian-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan;3. Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan;4. Center of Excellence for Marine Bioenvironment and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan |
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| Abstract: | The response of metal accumulation in coral Tubastraea coccinea to various degrees of metal enrichment was investigated from the Yin-Yang Sea (YYS) receiving abandoned mining effluents, the Kueishan Islet (KI) hydrothermal vent field, and the nearshore area of remoted Green Island (GI). The concentrations of most dissolved metals were highest in seawater at YYS, followed by KI, and then GI, showing the effects of anthropogenic and venting inputs on metal levels. Five metals (Co, Fe, Mn, Ni, and Zn) yielded significant differences (p < 0.05) among the skeleton samples. We identified similar patterns in the metal–Ca ratios, indicating that the elevated metals in skeletons was a consequence of external inputs. The coral tissues were relatively sensitive in monitoring metal accumulation, showing significant differences among three locations for Cd, Co, Cu, Fe, Pb, Ni, and Zn. Specific bioconcentration factors provided strong support for the differential metal accumulation in skeletons and tissues. |
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| Keywords: | Metal accumulation Bioconcentration factors Coral tissues Skeletons Metal enrichment Tubastraea coccinea |
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