抄録
Organically enriched sediment tends to be deposited on the sea floor in the inner parts of enclosed coastal seas throughout the world, due to phytoplankton blooming by eutrophication, increase of discharge of organic matter, and so on. The benthic environment with an organically enriched sediment often suffers from the occurrence of hypoxic bottom water and the development of reduced conditions in the sediment in summer, when the decomposition of the organic matter in the sediment is accelerated under high temperature conditions. To treat the organically enriched sediment is, therefore, very important for the environmental conservation of enclosed coastal seas. We have developed techniques for bioremediation of the organically enriched sediment, using a small polychaete, Capitella sp. I, which specially favors areas with organically enriched sediment. In this paper, we review the background and outline of the bioremediation techniques.
