Figure 11.
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]).
Kristensen Geochemical Transactions 2001 2:92 doi:10.1186/1467-4866-2-92