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A 70-day experiment was carried out to investigate the impact of sea cucumber Apostichopus japonicus bioturbation on the contents of different forms of inorganic carbon (IC) in the sediment. Sea cucumbers were cultured in fiberglass tanks (50L) with 5cm-thick sediment on the tank bottom. The tanks were divided to 4 groups according to the culture densities, i.e., 0 ind/tank, 3 ind/tank, 5 ind/tank...
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