Assessment of the Effect of Auto-mechanic Activity on Microbial Population and Availability

Abstract

The long-term presence of the resulting pollutants in the soil increases concerns about soil microorganism poisoning, which can lower soil fertility, which is dependent on both the type and quantity of microorganisms living there as well as the soil's chemical makeup. Contaminated soil samples were collected using a soil auger in a randomized method along transect of automobile mechanic workshop within the study area. Result obtained from laboratory analysis indicates considerable reduction in bacteria population as a result of petroleum pollution around auto mechanic workshops in the study area. Laboratory analysis indicates that only Pseudomonas sp. and Bacillus sp were identified in polluted soil samples and this is due to petroleum effects which has affected the existence of other species as compared to the control sample. Petroleum pollution has continued to have its effect on population of fungi in soil especially in places were spills are persistent. Result on fungi pollution reveals that auto mechanic activities and its spill actions reduces fungi population. This is seen through reduction in fungi count for polluted and pollution free soil (control). Research has proven that these action from man affects negatively the population of bacteria by affecting respiratory processes. Laboratory results indicates that spent oil spill from auto mechanic activity has a direct effect on microbial population in soil. Protection of soil microorganisms should be adopted through prevention of Spent oil spill around soil at auto mechanic workshop by setting up appropriate collection drums and containers.