Author/Authors :
L.M. Hern´andez1، نويسنده , , a، نويسنده , , B. G´omaraa، نويسنده , , M. Fern´andeza، نويسنده , , B. Jim´eneza، نويسنده , ,
M.J. Gonz´aleza، نويسنده , , U، نويسنده , , R. Baosb، نويسنده , , F. Hiraldob، نويسنده , , M. Ferrer b، نويسنده , , V. Benitoc، نويسنده , ,
M.A. Su?ner c، نويسنده , , V. Devesac، نويسنده , , O. Mu?nozc، نويسنده , , R. Montoroc، نويسنده ,
Abstract :
The impact of the spill from the mine in Aznalcollar Seville, Spain. on waterfowl in the Do˜nana National Park is
assessed. The concentrations of Cu, Pb, Cd, Zn and As in the liver and eggs of 16 species of waterfowl found dead in
the Park between April and November 1998 were determined. The highest levels were found for Zn, followed by Cu,
Pb, Cd and As. The main parameters related to the accumulation of these elements in the waterfowl studied were
species and trophic level. The other variables studied } distance from the spill, days of exposure, sex, size, and age
} are important, although this depends on the element studied. Zn and Cu from the spill have entered the food
chain of the aquatic birds studied, but Cd, Pb and As have not. There is currently no evidence to suggest that the
trace element concentrations measured have reached toxic levels.
Keywords :
Do?nana National Park , Waterfowl , Heavy metals , Acid mine waste , arsenic
