Mining activities affect the surrounding environment by increasing exposure to metals. In this study,
metal accumulation and its effects on reproduction and health of pied flycatcher (Ficedula hypoleuca)
nestlings were monitored before and up to five years after a lead mine and enrichment plant closed
down. The lead concentration in moss, nestling blood, liver and feces all indicated decreased lead
exposure by at least 31% after closure, although only blood lead decreased significantly. Although the
birds responded fairly well to the changed atmospheric deposition (based on moss samples), concentrations
were still higher compared with birds in a reference area, and breeding was affected at the mine
(smaller clutches and higher mortality). Surviving nestlings suffered from lower hemoglobin levels,
mean cell hemoglobin concentrations and inhibited d-aminolevulinic acid dehydratase activity. Lead
poisoning contributed to poor health and adverse reproductive effects, but other factors (e.g. increased
parasitic load) probably also affected the birds.
Mining activities affect the surrounding environment by increasing exposure to metals. In this study,metal accumulation and its effects on reproduction and health of pied flycatcher (Ficedula hypoleuca)nestlings were monitored before and up to five years after a lead mine and enrichment plant closeddown. The lead concentration in moss, nestling blood, liver and feces all indicated decreased leadexposure by at least 31% after closure, although only blood lead decreased significantly. Although thebirds responded fairly well to the changed atmospheric deposition (based on moss samples), concentrationswere still higher compared with birds in a reference area, and breeding was affected at the mine(smaller clutches and higher mortality). Surviving nestlings suffered from lower hemoglobin levels,mean cell hemoglobin concentrations and inhibited d-aminolevulinic acid dehydratase activity. Leadpoisoning contributed to poor health and adverse reproductive effects, but other factors (e.g. increasedparasitic load) probably also affected the birds.
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