Poster Number 1312
This study compared denitrification potential in cranberry bogs along a restoration gradient that included an active farm, a retired farm, a restored farm, and a natural reference wetland that had not been farmed. I measured denitrification potentials as well as soil properties likely to influence denitrification, including soil organic matter, moisture, microbial biomass nitrogen, and microbial biomass carbon. Results indicate significant differences in denitrification potential along the restoration gradient, in which the natural wetland was more than 1000 times greater than the active farm. Retired farms had 20 times greater denitrification potential than an active farm and restored wetlands had 50 times the denitrification potential of the active farm. However, denitrification potential of the restored wetland was only 5% of natural reference levels. Soil organic matter, moisture, and microbial biomass nitrogen showed significant differences across the restoration gradient and showed significant positive relationships with denitrification potential. Continued monitoring of restored sites over time is critical to determine the efficacy of cranberry bog restoration in reestablishing denitrification and associated soil properties.