Modelling the influence of mechanical-ecohydrological feedback on the nonlinear dynamics of peatlands

Peatlands are complex systems that exhibit nonlinear dynamics due to internal and external feedback mechanisms. However, the of vegetation on peat volume changes potentially affect peatland is not well understood. Here, we analyse consequences coupling between plant functional types with stiffness a nonequilibrium model by developing MPeat model. In this formulation, prefer exist in two possible states defined limit cycles, one corresponding wet other dry attractor. These can also coexist under same net rainfall indicating bistability which crucial drying threshold leads tipping point associated regime shift from soft-wet stiff-dry related rates carbon storage. While constitutes point, requires more sustained increases rainfall, state stable attractor as grows. As evolves, response surface motion, accumulation, water table depth forcing becomes increasingly higher amplitude degree caution may be required when interpreting paleorecord. Investigation behaviour these seasonal variations budget suggests will display high later peak timing compared state, phenomenon observed measures motion. Our study highlights importance mechanical-ecohydrological and, particular, role proportion types, Young's modulus, weight, position influencing shifts, critical thresholds or points, both short- long-term dynamical behaviour.