Bioaccumulation of heavy metals in two wet retention ponds

Vollertsen, Jes (author): Department of Civil Engineering, Aalborg University

Blecken, Godecke-Tobias (author): Luleå tekniska universitet,Arkitektur och vatten

Nielsen, Asbjørn Haaning (author): Department of Civil Engineering, Aalborg University

(creator_code:org_t)

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

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.

By the author/editor: Søberg, Laila; Vollertsen, Jes; Blecken, Godecke ...; Nielsen, Asbjørn ...; Viklander, Maria

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Civil Engineerin ...; and Water Engineerin ...

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