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\subsection*{Impact on pH, ion charges and DOC}  Fire had a marginal effect on pH in streams and lakes. In streams, there were a short acidification pulse the first few months but then pH have slowly increased over time (Fig. \ref{fig:figure4}ab). Analyses of ions showed that the pH did not change much due to drop in organic acids (RCOO-) post-fire while sulphate increased (Fig. \ref{fig:figure4}c-f). Thus, the acids canceled out each other and pH remained fairly constant. DOC showed a marked decrease immediately after the fire???? (Fig. 5??).  \subsection*{S and cation exports)  Calculations....\ref{fig:figure5}