| small mammal populations and community under conditions of extremely high thallium contamination in the environment. | studies were carried out in the vicinity of a zinc smelter in southern poland, 50 km northwest of krakow, where the previous measurements with another bioindication method revealed huge thallium levels in the environment. the mammals (106 individuals in total) were captured in four wooded areas situated 1.5 to 2.5 km in various directions from the plant and in two reference sites, located far from industrial emission sources. very high tl levels were found in livers and kidneys of all mammals ex ... | 1998 | 9756683 |