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タイトル: Accumulation of mercury in marine biota of Buyat Bay, north Sulawesi, Indonesia
著者: LASUT, Markus T.
YASUDA, Yoshiaki
キーワード: methyl mercury
bioaccumulation
submarine tailings disposal (STD)
Buyat Bay
Indonesia
発行日: 2008年8月20日
出版者: International Coastal Research Center, Ocean Research Institute, the University of Tokyo
掲載誌情報: Coastal marine science. Vol.32 No.1, 2008.8, pp. 1-8
抄録: Anthropogenic input of mercury (Hg) to marine environment is a great concern due to its potential impact may threat the marine ecosystem. In this paper, we evaluate Hg releases caused by mining in marine environment of Buyat Bay (BB), north Sulawesi, Indonesia, by quantifying the concentration of total mercury (THg) and methyl mercury (MeHg) in marine biota. The results showed that Hg was found in all samples and the concentration varied according to group of species. Bioaccumulation and biomagnifications occurred through the food webs in which the lowest concentration was found in the soft coral Sinularia sp. (1.3m g/kg, range 0.45-2.28) and other producers (sea grass and seaweed) and the highest was in the carnivorous fish Epinephelus merra (359m g/kg, range 211-572). As MeHg is found to accumulate in the carnivore fish sample in higher level than that in control, the methylation of inorganic Hg occurs in the marine environment of BB. That is plausible since all the Hg released from the anthropogenic sources in the region was inorganic form and there is absolutely no source of MeHg other then the spontaneous distribution.
URI: http://hdl.handle.net/2261/20985
ISSN: 13493000
出現カテゴリ:Coastal Marine Science
Coastal Marine Science

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