Field data from experiment testing organic amendments in restored wetlands

Data processing steps are shown on the spreadsheets except gas analysis. To estimate gas production rate, we plotted each data set and applied a best-fit linear curve in Excel. Bulk processing was not effective because the background (ambient) air samples at time T=0 were sometimes anomalously high because local air concentrations had been influenced by methane emission from nearby plots. In the cases where this was obvious, the T=0 values were omitted from the curve. Any methane curves with a negative slope, or where the r^2 value was less than 0.1 was considered zero methane emission. The table includes carbon dioxide and nitrous oxide, but only methane data were process for this report.