Figure 9
From: Quantifying bioirrigation using ecological parameters: a stochastic approach†
(A) Sv as a function of depth in shallow carbonate sediment at Dry Tortugas, FL, USA, from simulations using a consortium of the polychaete worm Notomastus sp. and the shrimp Callianassa sp. (B) Bioirrigation coefficients (s-1) as a function of depth for Dry Tortugas, FL derived by fitting an early diagenetic model to measured pore water profiles (Furukawa et al.;[32] red solid lines), and estimated from the burrow network in this model. Blue line indicates αO2 calculated using L = 2.6 mm from Furukawa et al.,[15] with eqn. (5), assuming Cb = C0. Green line indicates 
corrected for Cb using eqn. (17) and (20). (C) Bioirrigation coefficients (s-1) as a function of depth from Furukawa et al.[32] (red lines) and estimated from the burrow network in this model. Blue line indicates αSO4-2 calculated using sulfate concentration and reduction rate profiles from Furukawa et al.;[32] green line indicates αSO4-2 corrected for Cb, using eqn. (17) and (20). Orange solid line indicates bioirrigation coefficient profile calculated using eqn. (16), assuming zero order kinetics for sulfate reduction. Dotted lines indicate irrigation coefficient profiles calculated using ±1 standard deviation of the stochastic model burrow densities and surface areas.