The effect of urban pollution on land snail biodiversity in the Mila region (Oued Athmania case)

Abstract

This study evaluates the impact of urban pollution on terrestrial snails biodiversity in the commune of Oued Athmania (wilaya de Mila). Through field observations, physico-chemical soil analyses and ecological tools, 10 species belonging to 5 families were identified at 6 stations. Dominant species, such as Xerosecta sp. (49%) and Rumina decollata (13%), show a high tolerance to disturbance, unlike other more sensitive species. Malacological diversity is higher in stations with neutral, wet and low-salt soils, and decreases in degraded areas. Terrestrial snails are excellent bioindicators of soil quality. The study highlights the significant impact of urban pollution on this wildlife and advocates better integration of terrestrial invertebrates into conservation and environmental management policies. It is also a useful basis for future research in ecology and sustainable soil management.