Lasse Aro, Ari T.K. Ikonen
Proceedings of the 14th International Peat Congress
biomass, element-distribution, mires, nickel, safety-assessment
Theme I. Inventory, stratigraphy and conservation of mires and peatlands
We estimated distribution of stable nickel (Ni) in mire vegetation on Olkiluoto Island which has been selected as a repository site for spent nuclear fuel disposal. The largest Ni pools were in living branches (28% of the inventory) and in below-ground parts of trees (23% of the inventory) when Olkiluoto based material was used. When supplemental data of Ni from the reference site was applied, the Ni distribution changed. The largest Ni pools were found in tree foliage, living branches and stem wood. As a conclusion, more site specific data of Ni on mires in Olkiluoto and on the selected reference mires would be needed.