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- Lidman, JohanUmeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum (author)
The effect of lead (Pb) and zinc (Zn) contamination on aquatic insect community composition and metamorphosis
- Article/chapterEnglish2020
Publisher, publication year, extent ...
- Elsevier,2020
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:umu-173292
- https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-173292URI
- https://doi.org/10.1016/j.scitotenv.2020.139406DOI
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- Language:English
- Summary in:English
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- Metal contamination of freshwater ecosystems is a great threat to aquatic insect communities. In the past, focus has been on the toxic effects on the insect larvae, despite emerging evidence showing that negative effects can occur during metamorphosis to adults. There is therefore a risk that traditional studies on insect larvae would underestimate effect from metals. In this study, we investigated the effect of lead (Pb) and zinc (Zn) on aquatic insect abundance, including metamorphosis and adult emergence at 9 lakes, near an abandoned Pb/Zn mine, with different Pb and Zn concentrations in sediment and water. Further, differences in response to metal contamination among taxa, and potential community composition changes, were also investigated. Total insect abundance was not affected by metal contamination, but Zn had a negative effect on metamorphosis and proportionally less adults emerged compared to larval abundance when the bioavailable Zn concentration in water increased. The opposite pattern was found for bioavailable Pb (negative effect on larvae but not on adult emergence). All studied insect groups had similar response to metal contamination, and no change in community structure towards dominance of more tolerant taxa was observed. Our study shows that it is important to include metamorphosis when metal toxicity is evaluated in aquatic insects, and that metals can have opposite and contradicting effects. Thus, although combined cocktail effects of metal mixtures are important to assess, effects of individual metals can be underestimated.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap Miljövetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Environmental Sciences hsv//eng
- Metal contamination
- Aquatic insects
- Metamorphosis
- Abundance
- Community composition
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- Jonsson, MicaelUmeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum(Swepub:umu)meljon97 (author)
- Berglund, Åsa M. M.,1978-Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum(Swepub:umu)asabed98 (author)
- Umeå universitetInstitutionen för ekologi, miljö och geovetenskap (creator_code:org_t)
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- In:Science of the Total Environment: Elsevier7340048-96971879-1026
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