Figure 11From: Impact of polychaetes (Nereis spp. and Arenicola marina) on carbon biogeochemistry in coastal marine sediments†A hypothetical marine sediment with two adjoining sites. Left: defaunated. Right: with a normal density of Arenicola marina. Arrows indicate sedimentation of reactive organic matter at a rate of dGi/dt. Bulk sediment organic matter decomposition is dGu/dt at the defaunated site and dGb/dt at the faunated site (after Kristensen[55]).Back to article page