AUTHOR CONTRIBUTIONS
R.H.J., C.S.C.M., M.D.-B., P.B.R and B.K.S conceived and designed the original ideas of this study. The microcosm experiment was conducted by R.H.J, and C.S.C.M. Q-PCR analysis was carried out by H.L. Bioinformatics analyses were performed by R.H.J., and J-T.W. Statistical analyses were performed by R.H.J. The first draft of the paper was written by R.H.J., with subsequent revisions by E.E., C.A.M., M.D.-B., P.B.R and B.K.S. All authors contributed to the final draft.