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Nutrient Attenuation by a Riparian Wetland during Natural and Artificial Runoff Events

^a Dep. of Chemistry, Environmental Science and Studies Program, Towson Univ., 8000 York Road, Towson, MD 21252
^b Dep. of Environmental Toxicology, Clemson Univ., Clemson, SC 29670

View larger version (53K): [in a new window]   Fig. 1. Site map of the riparian wetland including transect and ground water monitoring nest labels. Distance between Transects 1 and 4 is approximately 200 m. The wetland width at the sampling transects is approximately 30 m.

View larger version (31K): [in a new window]   Fig. 2. Peak discharges measured at the inlet during Water Years 1996, 1997, and 1999. Sampled storms are indicated. No storms were sampled in 1998.

View larger version (19K): [in a new window]   Fig. 3. Bromide concentration 0.3 to 0.6 m below soil surface for ARE 2 by transect. Connection of data points is to help distinguish data sets and is not intended to infer trends. Superposition of data points on the x axis masks some data points.

View larger version (15K): [in a new window]   Fig. 4. Bromide concentration in surface water at the outlet during the artificial runoff events (AREs).

View larger version (16K): [in a new window]   Fig. 5. Bromide concentration 1.2 to 1.5 m below soil surface for Artificial Runoff Event (ARE) 2 by transect. Connection of data points is to help distinguish data sets and is not intended to infer trends. Superposition of data points on the x axis masks some data points.

View larger version (13K): [in a new window]   Fig. 6. Nitrate attenuation measured in surface water at the outlet during the artificial runoff events (AREs).

View larger version (20K): [in a new window]   Fig. 7. Nitrate attenuation in the wetland soils at Transects 1 (top) through 4 (bottom) during Artificial Runoff Events (AREs) 1, 2, and 3.