Trace metals in Fanga'uta Lagoon, Kingdom of Tonga

摘要

Fanga'uta Lagoon is the most important water body on Tongatapu, the main island of the Tonga group. The Lagoon occupies a central position on Tongatapu (Fig. 1), and has played a major part in the life of the surrounding communities, with about 30,000 people residing within its catchment. The Lagoon is a food source for both fin (mainly mullet) and shellfish, and is widely used for recreation. Previous studies have investigated the ecology of the Lagoon (Zann et al., 1984), water quality (Naidu et al., 1991; Aalbersberg et al.. 1992) and contamination ,by organochlorine compounds (Harrison et al., 1996).