|
(M/EH034) Effect of urban pollution on small mammals' populations in Cracow district. Gdula-Argasinska, Joanna1, Sawicka-Kapusta, Katarzyna 1, Zakrzewska, Marta1, 1 ABSTRACT- The studies were undertaken in the area of Cracow district (the third place of contaminated area in Poland). The project concerning heavy metals accumulation in tissues of small mammals: bank voles (Clethrionomys glareolus), yellow necked mice (Apodemus flavicollis) and common shrews (Sorex araneus) measurements of some hematological parameters (Hb and Hct), and estimation of age structure, and population density. Concentrations of heavy metals (Pb, Cd, Cr, Ni, Cu, Zn and Fe) in soft tissues and also in femur bones were determined by AAS with graphite furnance. The study area were included five forest sites on the southern direction of Cracow agglomeration, two sites on the eastern direction of agglomeration and steel works. Level of cadmium in kidneys of common shrews ranged from 14.25ug/g in animals from Kornatka to 88.85ug/g in shrews from Bonarka. Cd concentration in liver was also highest in animals from Bonarka (58.86ug/g) lowest in shrews from Kornatka In bank vole Cd concentration in kidneys ranged from 3.90ug/g in Ispina to about 7.76ug/g in Rajsko. In liver also the lowest concentration was found in voles from Ispina (1.12ug/g) while the highest also in animals from Rajsko (2.38ug/g). Yellow necked mouse had lowest concentration of Cd ranged from 1.99ug/g in kidneys and 0.40ug/g in livers of animals from Ispina to 5.33ug/g (kidneys) from Rajsko and 2.54ug/g (liver) in animals from Bonarka. All species from control sites have lowest values of Cd in both tissues. Chromium concentrations were balanced from 6.27ug/g in kidneys of bank voles (Weglowka) to 0.67ug/g in kidneys of yellow necked mice (Kolo). It was found that density of small mammals populations and age structure were lower at the sites situated close to agglomeration. Quality of food supply and contamination of environment by heavy metals could have been the factors which influenced the small mammals population. Key words: small mammals, heavy metals, population density, blood parameters |
