抄録
Enclosed coastal seas are subject to organic enrichment of the sediment on the sea bed. The benthic environment with the organically enriched sediment is apt to be suffered from the occurrence of anoxic (hypoxic) bottom water and development of reduced conditions of the sediment with high levels of hydrogen sulfide. We have developed a method to treat the sediment with artificially cultured colonies of a deposit-feeding polychaete, Capitella sp. 1. In this study, we conducted the experiments with outdoor pools to measure how efficiently the artificially established patches of Capitella were able to decompose the organic matter daily added to the sediment in the outdoor pools.