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24.95 square kilometres Nigerian military shooting range established in 1965 was studied (June-August, 2015 and February-March, 2016) for in situ  bacteria consortia impacts on xenobiotic biodegradation using polymerase chain reaction amplification of 16srRNA gene. The optical density reading of biodegrading activity of each bacterial isolate on explosives broth with 1% exposure mineral salt medium (MSM) was evaluated. Mixed bacterial consortia (MBC) observed high bioremediation potential (68.62%) compared to single isolate in decreasing order were Bacillus subtilis, 55.1%; Enterobacter spp,54.80%; Escherichia coli, 54.1%; Arcobacter spp, 43% Klebsiella pneumonia 42.7%, Lysini bacillus 37.8% and Achromobacter spp, 31.5% respectively attributed to the synergistic effect between the catabolic enzymes in the eight bacteria isolates. Anova test for total explosive contents shows a significant difference for all locations in both dry and wet Seasons (P<0.05) according to the Duncan multiple range test. All bacteria isolate reduced heavy metals better than the control in decreasing order were Bacillus subtilis>Enterobacter spp>Escherichia coli>Arcobacter spp>Klebsiella pneumonia >Lysinibacillus >Achromobacter spp. MBC observed high bioremediation potential (68.62%) compared to single isolate. MBC has the highest and prominent percentages reduction on heavy metal pollutants as a consequence of microbial ecology, bacterial strains having plasmid linked degradation or chromosomal genes, reduction ability, substrate specificity influenced microbial remediation of the explosives xenobiotic. Habitat filtering principle and resource ratio theory explains microbial completion and  genetic information of more than one organism is necessary to degrade the complex mixtures pollutants as  expressed in the MBC biodegradability.
Keywords:  Shooting range, 16srRNA,  Polymerase chain reaction,  Bioremediation,  Xenobiotic,  Bacterial consortia  Microbial competition , Explosives , Enzymes , Heavy metals and Biodegradation

Kachia military firing range since 1965 in situ characterization of microbes present in explosives contaminated soils was investigated. Bacteria gram stain morphological and biochemical characterization of the different microbial isolates. Bacterial DNA extracted from soil samples was achieved using the 16SrRNA is amplified using Polymerase Chain Reaction with the following microbes (Lysini bacillus, Escherichia coli, Enterobacter spp, Bacillus subtilis, Klebsiella pneumomia, Achromobacter spp and Arcobacter spp) was confirmed and results compared with the sequence obtained from the nucleotide database of National Centre for Biotechnology Information (NCBI). Fungal species isolates are: Rhizopus spp, Aspergillus niger, Penicillium spp, Trametes versicolourand Phanorochate chrysoporium may adapted to metabolise the explosives and heavy metals contaminant xenobiotic by biodegradation. Percentage isolates occurrence: 75% Enterobacterspp (highest) and 33% Escherichia coli (lowest); 67% Aspergillus niger (highest); and 17% for Penicillium sppand Trametes versicolor (lowest) respectively. Microbial biodegradation of explosives is considered to be most favourable under co-metabolic conditions. Site study explosives treatment by bioremediation will requires bioaugmentation of isolated microbes for xenobiotic biodegradation. Explosives impacts on biodiversity was illuminated and treatments protocol.

Keywords: fungi, bacteria, biodegradation, xenobiotic, characterization, explosives, military shooting range, horizontal gene transfer (HGT), 16srRNA gene sequence, PC3R technology.