Seasonal Population Trends of Microbial Communities in Oil Tainted Soils in Greater Port Harcourt Area, Nigeria

W. P. Muyoma, Boadu Kwasi Opoku, E. N. Wafula, E. Ibisime
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Abstract

The utilization of oil in industries has devastating effect to the environment. Industrial effluents and oil spills are continuously contaminating the soil. Further, seasonality influences the distribution of pollutants in soil. Consequently, soil microbial biota and ecological processes are affected. This study assessed the effect of seasonality on soil fungal and bacterial communities in oil contaminated soils in 12 selected sites in Greater Port Harcourt Area. Standard analytical procedures were used to obtain bio-physicochemical data from the soil samples and t test was used to analyse data. The levels of total petroleum hydrocarbons (TPH) were above 5000 ppm (DPR recommended limit). There was significant difference (p ≤ 0.000) between the means of TPH in wet and dry seasons. Seasonality influenced % HUF and % HUB in the soils of urban, industrial and agricultural sites. Generally, the seasonality trends showed that there was a declining population of THB, HUB, TF, and HUF from the wet season to the dry season. However, the results show that there was a stable trend in % HUB as compared to oscillations observed in % HUF in oil tainted soils across a seasonal divide. We recommend characterization of the microorganism to identify the best candidate for bioremediation of oil tainted soils across a seasonal divide.
尼日利亚大哈科特港地区油污土壤中微生物群落的季节性种群趋势
石油在工业中的使用对环境造成了破坏性影响。工业废水和石油泄漏不断污染土壤。此外,季节性也会影响污染物在土壤中的分布。因此,土壤微生物生物群和生态过程也会受到影响。本研究评估了季节性对大哈科特港地区 12 个选定地点受石油污染土壤中真菌和细菌群落的影响。采用标准分析程序从土壤样本中获取生物物理化学数据,并用 t 检验分析数据。总石油碳氢化合物 (TPH) 的含量超过了 5000 ppm(DPR 建议限值)。雨季和旱季的总石油碳氢化合物平均值存在明显差异(p ≤ 0.000)。季节性影响了城市、工业和农业用地土壤中的 HUF 和 HUB 百分比。总体而言,季节性趋势表明,从雨季到旱季,THB、HUB、TF 和 HUF 的数量呈下降趋势。不过,研究结果表明,在受石油污染的土壤中,HUB 的百分比呈稳定趋势,而 HUF 的百分比则在不同季节间波动。我们建议对微生物进行特征描述,以确定跨季节分界线油污土壤生物修复的最佳候选微生物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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