The effect of mine tailing residue on marine microbial activities in Indian Ocean

The effect of mine tailing residue on marine microbial activities in Indian Ocean
유장연; 양원석; 최동한; 노재훈; 형기성; 유찬민
KIOST Author(s)
Yang, Won Seok(양원석)Choi, Dong Han(최동한)Noh, Jae Hoon(노재훈)Hyeong, Ki Seong(형기성)Yoo, Chan Min(유찬민)
Alternative Author(s)
유장연; 양원석; 최동한; 노재훈; 형기성; 유찬민
Publication Year
Most of Deep-sea minings(DSM) focus on three types of resources poly-metallic

manganese nodule(MN), seabed massive sulfur(SMS), and cobalt crust. After the mining,

the mined ores are grinded into fine particles so as to extract the sought-out resources,

producing massive amounts of wastes powders called mine tailings in the process. This

process would take place on the ship and the mine tailings will be disposed into the sea.

Great economic benefits are anticipated while a serious damage to the marine environment

by mine tailings is also expected.1. International Seabed Authority(ISA) was founded to

regulate any exploitation of resources at seabed or subsoil on marine areas beyond national

jurisdictions.2. The plans to proclaim its first regulations related to these exploitations are

projected in 2020. Numerous countries are preparing for these by conducting various

experiments pertinent to the environmental impacts of mine tailings. But there are only a

few experiments regarding the effects of mine tailing on marine phytoplanktons.

This study looks into the effects of SMS mine tailings and MN on activities of

phytoplankton. The surface waters of the Indian Ocean were sampled and mixed with SMS

residues and crushed MN (<20um) at 7 different concentrations, then were incubated up to

12 hours in a deck incubator with continuous flow of surface seawater the same conditions

(temperature, light intensity)
Bibliographic Citation
2019년 한국해양학회 추계학술대회, 2019
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