Fig 1.
Organic matter measurement compared between inflow and outflow of the treatment (1–4) and control ditches (5–6).
Error bars represent standard deviations throughout the three sampling periods.
Fig 2.
pH compared between inflow and outflow of the treatment (1–4) and control ditches (5–6).
Error bars represent standard deviations throughout the three sampling periods.
Fig 3.
The average particle size distribution on a volumetric basis across the six field ditches.
Treatment ditches (1–4) contain coarser average distribution in the inflow compared to the outflow. Control ditches (5–6) contain a finer average particle size distribution in the inflow compared to the outflow of control ditch 5. Control ditch 6 contains a similar average distribution in the inflow and outflow. Vertical blue and orange lines represent the standard deviation between three sampling periods for the inflow and outflow locations.
Fig 4.
Median particle size compared between inflow and outflow of the treatment (1–4) and control ditches (5–6).
Error bars represent standard deviations throughout the three sampling periods.
Fig 5.
Sediment total phosphorus compared between inflow and outflow of the treatment (1–4) and control ditches (5–6).
Error bars represent standard deviations throughout the three sampling periods.
Fig 6.
Results from modified Hedley (1982) phosphorus fractionation on a percentage basis (see horizontal bar chart above) and in mg kg-1.
Fig 7.
P-31NMR spectra of inflow and outflow sediments of treatment ditch 3.
Table 1.
Characterization of inflow and outflow sediment samples from ditch 3.
Table 2.
Organic P forms (mg kg-1) of NaOH EDTA extractions in inflow and outflow samples collected from ditch 3.
Table 3.
Practices used throughout experiment regarding flow rate, dredging, aquatic vegetation, and water total phosphorus (TP) concentrations.
Table 4.
The top value represents the Spearman correlation coefficient, while the bottom number represents the corresponding P value.
Table 5.
Particle size classes based on USDA taxonomy displayed on both a volumetric and numeric basis.