Table 3 Variable definitions of model inputs

A

Defined area (m²) of the vegetated (A_Veg), unvegetated (A_Unveg), infill (A_Ifill), and conservation (A_Conserve) project scenarios.

δ

Carbon density (g C m⁻³) in vegetated (δ_veg) and unvegetated (δ_unveg) sediments.

d

Depth (m) of sediment infill layer (d_infill) or dredge depth (d_dredge).

r_remin

Proportion (%) of carbon in the dredged sediment that is remineralized during sediment movement and placement processes.

ρ

Carbon accumulation in living and dead above and below ground biomass (ρ_biomass in g C m⁻²), vegetated sediments (ρ_sed,veg in g C m⁻²yr⁻¹), and unvegetated sediments (ρ_sed,unveg in g C m⁻²yr⁻¹).

Methane fluxes (g m⁻²yr⁻¹) in vegetated (ρ_methane,veg), infill (ρ_{methane,infill}), dredge (ρ_{methane,dredge}) and BAU (ρ_{methane,unveg}) sediments. Nitrous oxide fluxes (g m⁻²yr⁻¹) in vegetated (ρ_N2O,veg), infill (ρ_N2O,infill), dredge (ρ_N2O,dredge) and BAU (ρ_N2O,unveg) sediments.

C

Total carbon gain or loss (g C_eqyr⁻¹).