Metal concentrations in the growth bands of Porites sp.: A baseline record on the history of marine pollution in the Gulf of Mannar, India

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• 作者：S. Krishnakumar^a ; ^{coralkrishna@yahoo.co.in" class="auth_mail" title="E-mail the corresponding author} ; S. Ramasamy^a ; ^{unimadram@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; N.S. Magesh^b ; ^{mageshissivan@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; N. Chandrasekar^b ; ^{profncsekar@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; T. Simon Peter^b ; ^{tnoblesimon@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Marine pollution ; Metal accumulation ; Growth bands ; Metal selectivity index ; Pollution Load Index ; Gulf of Mannar
• 刊名：Marine Pollution Bulletin
• 出版年：2015
• 出版时间：15 December 2015
• 年：2015
• 卷：101
• 期：1
• 页码：409-416
• 全文大小：1336 K

文摘

The present study was carried out on the Porites coral growth bands (1979 to 2014) to measure the metal accumulation for assessing the environmental pollution status. The concentrations of studied metals are compared with similar global studies, which indicate that the metals are probably derived from natural sources. The identical peaks of Fe and Mn are perfectly matched with Cu, Cr and Ni concentrations. However, the metal profile trend is slightly depressed from a regular trend in Zn, Cd and Pb peaks. The metal accumulation affinity of the reef skeleton is ranked in the following order Cr > Cd > Pb > Fe > Mn > Cu > Ni > Zn. The distribution of metal constituents in coral growth bands is primarily controlled by Fe and Mn in the reef skeleton. Other reef associated metals such as Pb and Cd are derived from other sources like coastal developments and anthropogenic sources.