Small Mammal Populations and Community Under Conditions of Extremely High Thallium Contamination in the Environment
September 1998
in “
Ecotoxicology and Environmental Safety
”
Studysummary This study observed very high thallium levels in small mammals near a zinc smelter in Poland, accompanied by severe population and health impacts.
Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer
The study conducted near a zinc smelter in southern Poland revealed extremely high thallium (Tl) contamination in the environment, significantly affecting small mammal populations. A total of 106 mammals were captured, showing high Tl levels in their livers and kidneys, particularly in bank voles. Hair loss, a symptom of thallium poisoning, was observed, with one wood mouse nearly hairless. Population densities were low, with altered species proportions and a skewed age structure, lacking young generations. Only sexually inactive males were found, indicating poor population health compared to other areas near zinc smelters.
