EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
6/05/2017 | 11:45 AM - 12:00 PM | THE DOWNSIDE OF A SEAFRONT PROPERTY - METAL TRANSPORT FROM AQUATIC TO TERRESTRIAL ECOSYSTEMS THROUGH FOOD WEBS | 301A
THE DOWNSIDE OF A SEAFRONT PROPERTY - METAL TRANSPORT FROM AQUATIC TO TERRESTRIAL ECOSYSTEMS THROUGH FOOD WEBS
Terrestrial ecosystems have traditionally been regarded as sources for contaminants whereas aquatic systems have been regarded as sinks. Lately this view have been questioned and for example emerging insects may transfer contaminants from the aquatic ecosystem back to land. In this study we focused on metal transfer from lakes to riparian insectivorous birds (Ficedula hypoleuca), via emerging insects. We compared metal concentrations in birds breeding in riparian environments with birds in more forested areas around an abandoned lead/zinc mine. Lead and zinc concentrations were 100 times higher in lakes at the mining site compared to reference lakes, and birds accumulated higher lead concentrations in contaminated sites. However, zinc (normally regulated in birds) accumulated at higher rate in nestlings from riparian zones, irrespective of contaminant load, indicating that aquatic insect may transfer zinc to terrestrial ecosystems. As such, birds may be subjected to high exposure of zinc from aquatic ecosystems, even when breeding close to lakes considered uncontaminated. Thus, the flux of metals from aquatic to terrestrial ecosystems needs to be incorporated in risk assessments.
- S03 Stressing the 'Eco' in Freshwater Ecotoxicology
- C13 Ecotoxicology
- S14 Stressors in linked aquatic-terrestrial ecosystems: New developments and solutions
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Presenters/Authors
Åsa Berglund
(), Dep. of Ecology and Environmental Science, Umeå University, asa.berglund@umu.se;
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Johan Lidman
(), Department of ecology and environmental science, Umeå University, johan.lidman@umu.se;
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Micael Jonsson
(), Dep. of Ecology and Environmental Science, Umeå University, micael.jonsson@umu.se;
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