Bioaccumulation of Cr-51, Ni-63 and C-14 in Baltic Sea benthos
2005 (English)In: Environmental Pollution, ISSN 1873-6424, Vol. 134, no 1, 45-56 p.Article in journal (Refereed) Published
The Baltic Sea is a species-poor, semi-enclosed, brackish sea, whose sediments contain a wide range of contaminants, including sediment-associated metals and radionuclides. In this study, we have examined and compared bioaccumulation kinetics and assimilation efficiencies of sediment-associated 51Cr, 63Ni and 14C in three key benthic invertebrates (the deposit-feeding Monoporeia affinis, the facultative deposit-feeding Macoma baltica, and the omnivorous Halicryptus spinulosus). Our results demonstrate that (i) all radionuclides were accumulated, (ii) the different radionuclides were accumulated to various extents, (iii) small changes in organic carbon concentration can influence the accumulation, and (iv) the degree of accumulation differed only slightly between species. These processes, together with sediment resuspension and bioturbation, may remobilise trace metals from the sediment to the water and to higher trophic levels, and therefore should be taken into account in exposure models and ERAs.
Bioaccumulation of radioisotopes in Baltic Sea benthos has important implications for contaminant transfer and exposure.
Place, publisher, year, edition, pages
Elsevier , 2005. Vol. 134, no 1, 45-56 p.
Bioaccumulation; Sediment; Benthos; Radionuclides; Trace metals
IdentifiersURN: urn:nbn:se:su:diva-23177DOI: 10.1016/j.envpol.2004.07.017OAI: oai:DiVA.org:su-23177DiVA: diva2:190517
Part of urn:nbn:se:su:diva-1752004-05-132004-05-132009-12-28Bibliographically approved