Monday, 6 October 2008: 11:35 AM

George R. Brown Convention Center, 362F

Ariel Szogi, USDA-ARS, USDA-ARS Coastal Plain Research Center, 2611 W Lucas St., Florence, SC 29501-1241 and Jeffrey Novak, USDA-ARS, USDA-ARS-Coastal Plains Research Center, 2611 W. Lucas Street, Florence, SC 29501-1241

The ability of wetlands to hold phosphorus (P) makes them and important landscape feature that help to protect water quality. However, their ability to retain P can be affected through hydrologic disturbances caused by both storms and flooding. An animal waste impacted in-stream wetland (ISW) located at the Herrings Marsh Run watershed, Duplin Co., NC, was studied for four years (1996-1999) to evaluate the effects of storms and hurricanes on P storage pools. Outflow dissolved P concentrations and mass export loads were used to measure the storm effect on P release from the ISW. Although not all storm events caused significant amounts of dissolved P release from the ISW, multiple storms in close succession significantly increased DP export. Major changes in DP along with sediment total P concentrations within the ISW occurred as a result of intense storm activities during the four years of this study. Dissolved P concentrations in sediment pore water and sediment total P concentrations decreased within the ISW suggesting that the effects of extreme events, such intense storms and hurricanes in close succession may affect the long term water quality functions of in-stream wetlands.

See more of: Symposium --Restored and Created Wetland Functions Under Extreme Climate Events
See more of: S10 Wetland Soils

2008 Joint Annual Meeting (5-9 Oct. 2008): Storm and Hurricane Disturbances on Phosphorus Storage within an In-Stream Wetland.

603-9 Storm and Hurricane Disturbances on Phosphorus Storage within an In-Stream Wetland.