Land use influence on Cs-137 levels in perch (Perca fluviatilis L.) and roach (Rutilus rutilus L.)

Sammanfattning

The environmental influence on Chernobyl-derived Cs-137 levels in perch (Perca fluviatilis L.) and roach (Rutilus rutilus L.) was revealed using partial least-squares regression (PLS). The 53 environmental predictors used describe land use in catchment areas, various catchment area and lake characteristics, lake water chemistry, and fish stock composition. The study showed a profound effect of land use on the Cs-137 levels in fish. Radiocaesium deposited on arable land was retained in the soil to a greater extent than was Cs-137 deposited on wetlands, which more easily leached out to the lake ecosystems. The Cs-137 deposition close to the lakes had a more pronounced effect on Cs-137 levels in the fish than did more distant deposition. The radiocaesium bioavailability is mainly governed by lake water cation content, as hardwater lakes had significantly lower Cs-137 content in fish. Resuspension of Cs-137 contaminated sediments only had a limited influence on the observed levels in fish. (C) 2001 Elsevier Science Ltd. All rights reserved

Publicerad i

Journal of Environmental Radioactivity
2001, Volym: 55, nummer: 2, sidor: 125-143 Utgivare: ELSEVIER SCI LTD

SLU författare

• Sonesten, Lars

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Fisk- och akvakulturforskning
Miljö- och naturvårdsvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1016/S0265-931X(00)00187-9

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/14567