**Appendix A**

**Figure A1.** The grain size (sand, silt, clay in graph (**A**)) and nutrient concentrations (TOC (graph (**B**)), TP (**C**), TN (graph (**D**)), NH4 <sup>+</sup> (graph (**E**)) and NO3 − (graph (**F**)) in sediment of Ba Lai and Ham Luong estuary. point to estuary level. Abbreviations: "DD" = dammed downstream, "DU" = dammed upstream, "RD" = reference downstream, "RU" = reference upstream. Letter a pointed to non-significant differences. "=" sign meant that no significant difference was found.

**Table A1.** The percentage of contribution of most important genera responsible for dissimilarity in relative abundance between groups based. Percentage dissimilarity (bold) between group (between the two estuaries and between each pair estuarine sections) and contributing percentage of each contributor for the dissimilarity between groups are shown together. Abbreviations: "DD" = dammed downstream, "DU" = dammed upstream, "RD" = reference downstream, "RU"= reference upstream.


#### **References**


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