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Aquatic Environment Conservation Using Biomanipulation Methods in Lake Taihu

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Biota and water environment in Lake Taihu, China

Biota and water environments are being studied at East Lake Taihu and Meiliang Bay in Lake Taihu, China. There are many species of aquatic macrophytes in East Lake Taihu that appear to inhibit the excess growth of algae and to improve water quality. Meanwhile, in Meiliang Bay, these aquatic macrophytes are sparsely distributed, and the excess accumulation of blue-green algae "water-blooms" (aoko) has been recently confirmed on the lakefront. Clearly, Lake Taihu has currently become eutrophic. In order to prevent the issues of eutrophication, the application of biomanipulative methods were investigated in our project. For instance, the native species of freshwater pearl mussels can filter and remove a large proportion of the phytoplankton from the water. Also, some of the native aquatic plants can absorb nutrients such as nitrogen and phosphorus. Therefore, they have potential as tools for use in the biomanipulation of eutrophic Lake Taihu.

Hydro-Environmental Engineering, Department of Urban and Environmental Engineering,
Faculty of Engineering, Kyushu University
Professor Takahiro Kuba
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