Recovery of Soil Processes in Replanted Mangroves: Implications for Soil Functions

Mangrove revegetation is a vital strategy to recover ecosystem services (e.g., climate regulation and pollutants retention) provided by these ecosystems. Although soils are directly or indirectly responsible for diverse in mangrove ecosystems, few studies have focused on the recovery of soil functions carbon sequestration) after replanting. This study aimed evaluate processes associated with Fe, S, C dynamics its implications restoration functions. Two sites under replanting initiatives were studied along Brazilian coast (i.e., NE SE). The was conducted 3- 7-year-old replanted forests, comparison made degraded mature mangroves. Particle size, stocks, Fe forms, total S contents, degrees pyritization mineralogical assemblages assessed. Seven years replanting, stocks increased 42% 29% from SE sites, respectively. In addition, significant increases observed fine particles, reactive pyrite contents plots. These new conditions promoted organic matter accumulation, stabilization, potential metal retention. Our findings highlight programs recovering essential