Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6362903 | Marine Pollution Bulletin | 2009 | 10 Pages |
Abstract
The Batu Hijau copper/gold mine in Sumbawa, Indonesia processes ore at approximately 130,000Â tpd and discharges tailing via a submarine pipeline to depths below 3000Â m at the base of a submarine canyon. The study investigated recolonisation of tailing by meiofauna and its dependence on subsequent accumulation of natural sediment. Microcosm and mesocosm scale experiments were carried out using two tailing and two control samples, the latter comprising defaunated and unaffected natural sediment. All test materials were similar in physical and chemical respects, except for the higher copper concentration in the tailing. The abundances of meiofauna colonising defaunated controls and both tailing samples increased from zero to levels statistically indistinguishable from natural unaffected controls after 97 and 203Â days. Colonisation was well established in tailing from freshly mined ore after 40Â days, and in oxidized tailing from stockpiled ore after 65Â days, and was not dependent on settled natural material.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Oceanography
Authors
David Gwyther, Grant J. Batterham, Jorina Waworuntu, Tonny H. Gultom, Windy Prayogo, Susetiono Susetiono, Karnan Karnan,