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. 2016 Aug 5;7:1213. doi: 10.3389/fmicb.2016.01213

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Copyright © 2016 Obi, Adebusoye, Ugoji, Ilori, Amund and Hickey.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Principal component ordinations of the sediment microbial communities showing levels of similarity among sampling sites (A) and environmental variables associated with the segregation of communities along the PCO axes (B). Environmental variables contained within the brackets are (left to right in the cluster): 1. Pb, 2. Benzo(a)pyrene, 3. Benzo(b)fluoranthene, 4. Benzo(g,h,i)perylene, 5. Cr, 6. Acenaphthene, 7. Cu, 8. Acenaphthylene, 9. Anthracene, 10. Benzo(k)fluoranthene, 11. Naphthalene, 12. Phenanthrene, 13. Indeno(1,2,3-c,d)pyrene, 14. Pyrene, 15. Chrysene, 16. Ni, 17. Dibenzo(a,h)anthracene, 18. Fluoranthene, 19. Fluorene, 20. Pyrene, 21. Co.