Annu Kaila, Zaki-ul-Zaman Asam, Sakari Sarkkola, Liwen Xiao, Ari Laurén, Mika Nieminen
Proceedings of the 14th International Peat Congress
doc, incubation-experiment, nutrient-mobilization, restoration
Theme VII. Ecology and management on forested peatlands
Earlier studies have shown contradictory results concerning the impacts of peatland restoration on nutrient and DOC transportation. To clarify these results, we studied the effect of water table (WT) rising on phosphorous (P), iron (Fe), ammonium (NH4+-N), nitrate (NO3–-N), and dissolved organic carbon (DOC) mobilization with a laboratory microcosm incubation experiment. Peat soil samples were collected from two blanket bogs in Ireland and five contrasting sites in Finland. The results indicated significant differences in P, N, and DOC release due to water-logging, with from almost no increase to over hundred-fold increase compared with the columns subjected to aerobic conditions.