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Träfflista för sökning "WFRF:(Nielsen Asbjørn Haaning) "

Sökning: WFRF:(Nielsen Asbjørn Haaning)

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1.
  • Søberg, Laila, et al. (författare)
  • A comparison of freshwater mussels and passive samplers as indicators of heavy metal pollution in aquatic systems
  • 2013
  • Konferensbidrag (refereegranskat)abstract
    • The utility of passive sampling as a tool for determining the ecological state of wet retention ponds was investigated as an alternative to the analysis of living organisms. The accumulation of heavy metals over time in mussels and passive samplers exposed to artificial stormwater was examined under controlled conditions in order to determine whether either system was capable of functioning as a reliable source of data on aquatic pollution. The laboratory results indicated that mussels are useful in this context. However, passive samplers will require further development to be useful since there was no strong correlation between the heavy metal concentrations observed in the mussels and those in the passive samplers.
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2.
  • Søberg, Laila, et al. (författare)
  • Bioaccumulation of heavy metals in two wet retention ponds
  • 2016
  • Ingår i: Urban Water Journal. - 1573-062X. ; 13:7, s. 697-709
  • Tidskriftsartikel (refereegranskat)abstract
    • Metal accumulation in stormwater ponds may contaminate the inhabiting fauna, thus jeopardizing their ecosystem services function. We evaluated bioaccumulation of metals in natural fauna and caged mussel indicator organisms in two wet retention ponds. Mussel cages were distributed throughout the ponds to detect bioaccumulation gradients and obtain a time-integrated measure of metal bioavailability. We further investigated if sediment metal concentrations correlate with those in the fauna and mussels. Metal concentrations in the fauna tended to be higher in the ponds than in a reference lake, but statistical significance was only shown for Cu. Positive correlations were found for some metals in fauna and sediment. Sediment metal concentrations in one pond decreased from inlet to outlet while no gradients were observed in the mussels in either pond. These findings indicate that metal accumulation in the examined ponds currently does not pose a threat to their habitat function.
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  • Resultat 1-2 av 2
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konferensbidrag (1)
tidskriftsartikel (1)
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refereegranskat (2)
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Blecken, Godecke-Tob ... (2)
Viklander, Maria (2)
Søberg, Laila (2)
Vollertsen, Jes (2)
Nielsen, Asbjørn Haa ... (2)
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