Bacterial community and chemical profiles of oil-polluted sites in selected cities of Uganda: potential for developing a bacterial-based product for remediation of oil-polluted sites

Table 2 Correlation between heavy metal content and bacterial profiles (Spearman’s, n = 27)

Profiles	pH	OC	N	P	Zn	Cr	Mn	Ni	Pb
H	0.07^NS	0.52**	0.33^NS	0.27^NS	0.59**	0.30^NS	0.25^NS	0.07^NS	0.36^NS
S	0.13^NS	0.51**	0.25^NS	0.19^NS	0.56**	0.29^NS	-0.01^NS	-0.19^NS	0.18^NS
AWCD	-0.02^NS	0.61**	0.47*	0.28^NS	0.71***	0.29^NS	0.13^NS	-0.15^NS	0.33^NS

Species diversity (H), Species richness (S), Bacterial activity (AWCD), p ≤ 0.05*, p ≤ 0.01**, p ≤ 0.001***, NS – Not significant
The correlations between the bacterial community profiles and the hydrocarbons were largely positively correlated apart from the correlations with Benzo(k) fluoranthene (Bl), Benzo(a) pyrene (Bp) and Benzo(g,h,i) perylene (Be) (Table 3). Positive correlations between bacterial community profiles and Naphthalene, Acenaphthene, Fluorathnthene and Indeno(1,2,3-cd) pyrene were all significant. For Acenaphthylene and Phenanthrene, they were only significant for AWCD while for Fluorene and Pyrene, they were significant for both S and AWCD and Dibenz(a,h) anthracene for only H. On the other hand, the negative correlations were only not significant for S and Benzo(g,h,i)perylene

ISSN: 1471-2180