Fig 1.
Hypothetical sediment Corg spatial distributions (black lines) relative to a seagrass meadow edge.
These hypotheses assume (A) increasing current attenuation with distance into the meadow, (B) attenuation over a short distance and high suspended sediment availability, and (C) attenuation with low suspended sediment availability.
Fig 2.
The restored South Bay eelgrass meadow showing its expansion history and sampling transects.
Sites B1-4 provided bare control sites (background photo printed under a CC BY license, with permission from R. Orth [51]).
Fig 3.
Sediment Corg concentrations along transects by bed depth interval.
Error bars = SE.
Table 1.
Sediment Corg concentrations and blue carbon stocks within the seagrass meadow by bed depth interval (CO2 estimated using molecular weight ratio).
Table 2.
Linear relationships between sediment Corg and independent variables measured at sites by bed depth interval.
Fig 4.
Organic matter, Corg, and bulk C:N distributions by bed depth interval within the meadow.
Transect sites are shown in the first Fig; the maps were generated by kriging.
Fig 5.
Meadow grain size (mean and sand fraction) and peak seagrass shoot density distributions.
Sample sites are shown in each Fig; the maps were generated by kriging. Note that the inverse of sand fraction represents < sand-size particles.
Table 3.
Kendall correlation (Tau B) for sediment bulk Corg and possible explanatory variables (n = 66 sites; top number = τ, bottom number = p-value; significant correlations at Bonferroni adjusted α’<0.0018 highlighted in bold).
Fig 6.
Sediment Corg concentration relationships with measured independent variables.
Comparisons are by bed depth interval as noted; see Table 2 for individual regression statistics.
Table 4.
Spatial autoregressive model results for 0–3 cm data.