Comparison of metal accumulation in the azooxanthellate scleractinian coral (Tubastraea coccinea) from different polluted environments

Mar Pollut Bull. 2014 Aug 30;85(2):648-58. doi: 10.1016/j.marpolbul.2013.11.015. Epub 2013 Dec 7.

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.

Keywords: Bioconcentration factors; Coral tissues; Metal accumulation; Metal enrichment; Skeletons; Tubastraea coccinea.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anthozoa / chemistry*
  • Environmental Monitoring / methods*
  • Geography
  • Hydrothermal Vents
  • Metals / analysis*
  • Metals, Heavy / analysis*
  • Seawater / chemistry
  • Water Pollutants, Chemical / analysis*

Substances

  • Metals
  • Metals, Heavy
  • Water Pollutants, Chemical