4.1 Within-site comparisons
In all sites except those in Colorado, either treatment or reference stocks are highest, and either treatment or degraded are the lowest of the three categories (Figure 2, Tables 2 & 3). Reference stocks are generally estimated to be higher than degraded stocks (seven of nine sites) although the result is only significant at the 95% confidence level for three sites. Colorado sites excluded, the only sites with statistically highest stocks are reference sites (Fivemile Bell, Whychus Creek, and East Canyon Creek). Colorado sites have the highest stocks in degraded floodplains, lowest in treatment floodplains, and intermediate stocks in reference floodplains. Although we expected carbon stocks to vary with moisture, only three floodplains of the 38 measured (East Canyon Creek Degraded Reach 1, Staley Creek Degraded Reach 2, and South Fork McKenzie Reference Reach) have significant differences between carbon stocks for wet versus dry samples. Therefore, for simplicity, we did not account for moisture when conducting tests for significant differences between categories.