almost significantp = 0.053
For additional CAR, only δ 13 C had a significant and negative effect, though marsh age had an almost significant ( p = 0.053) and positive effect.
For additional CAR, only δ 13 C had a significant and negative effect, though marsh age had an almost significant ( p = 0.053) and positive effect.
Stable carbon isotope depth profiles showed a trend towards more negative values from bottom mud/sandflat sediments to top marsh layers across the four sites and management types (Figure 4A ).