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Recent publications

Workreport 2017-14



Element Composition and Concentration Rations in Bird and Mammal Species in Southwest Finland


Haavisto, F., Lyly, M., Toivola, M.



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This working report presents the methods and results from a fauna sampling campaign that has been carried out on Olkiluoto Island and the reference area in southwest Finland. The fauna sampling campaign was carried out to produce input data on terrestrial, semiaquatic and aquatic mammal and bird species for the safety case for the spent nuclear fuel repository, and expecially for the dose assessment of mammal and bird species.

The sampling campaign was carried out in 2008­–2016, and resulted in 57 collected individuals from 19 different species. The focus in the sampling was on the representative species that were selected for the dose assessment of the mammals and birds. These were red fox, moose and hazel grouse for the terrestrial environment, grey seal and common eider for the aquatic environment, and American mink, European beaver and mallard that utilise both aquatic and terrestrial habitats (i.e. they are semi-aquatic species). Some representative species proved to be impossible to collect either for practical reasons (e.g. brown bear) or legislative restrictions (e.g. white-tailed sea eagle).

This report includes the results on the mammal and bird dimension measurements and biomass distribution. Element concentrations of the 12 key elements screened as important for the safety case are presented for the whole body of the individuals and separately for muscle, bone, liver and other tissue types. To estimate the transfer of the elements from environment to mammals and birds, concentration ratios from stomach content and from water or sediment/soil to individuals were calculated.


Mammals, birds, dimensions, chemical elements, concentration ratio, biosphere assessment, safety case


WR 2017-14_web (pdf) (19 MB)


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