Presence and biomagnification of organochlorine pollutants and heavy metals in mammals of Do?ana National Park (Spain), 1982-1983

The existence of 11 organochlorine compounds and five heavy metals in the liver and muscle of 57 members of 10 species of mammals, all from Do?ana National Park (Spain), has been investigated. Five organochlorine compounds have been found and the five heavy metals were present in the samples. The biomagnification of organochlorines is shown. The detected concentrations for each trophic rank seem not to influence unfavourably on the population stability of the species. The rabbit is proposed as a monitor species for future studies in pollution at Do?ana National Park.