logging in or signing up potter agu Burnell Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 26 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: January 03, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript QUANTIFYING WETLANDS FUNCTIONS: A CASE STUDY : QUANTIFYING WETLANDS FUNCTIONS: A CASE STUDY Ken Potter, Justin Rogers, Adam Hoffman, Chin Wu, John A. Hoopes, and David E. Armstrong University of Wisconsin-MadisonACKNOWLEDGEMENTS: ACKNOWLEDGEMENTS This research was supported by a grant from the U.S. Department of Agriculture and the Environmental Protection Agency.WETLAND SERVICES: WETLAND SERVICES Flood abatement Water quality improvement Sediment Phosphorus Nitrogen Habitat The first two services have rarely been rigorously quantified. Depend on connectivity of system.Slide4: UPPER DORN CREEK WETLANDUPPER DORN CREEK WETLAND: UPPER DORN CREEK WETLANDMEASUREMENT LOCATIONS: MEASUREMENT LOCATIONS Dorn Gage Ripp GageHYDRAULIC MODELING RESULTS: HYDRAULIC MODELING RESULTSCONCLUSIONS - PEAKS: CONCLUSIONS - PEAKS The wetland attenuated all peaks, with maximum attenuation for intermediate peaks. Small events did not reach wetland. Large events filled storage.CONCLUSIONS - SEDIMENT: CONCLUSIONS - SEDIMENT For the two largest events, which accounted for 96% of the sediment exported, the sediment outflow was about 100% greater than the inflow. Erosion of sediment in the main channel Erosion of sediment in the two primary ditchesCONCLUSIONS - PHOSPHORUS: CONCLUSIONS - PHOSPHORUS The wetland sequestered 40% of the dissolved reactive phosphorus. The wetland released 34% more particulate-bound phosphorus than it received. Overall, the wetland had no impact on the transport of total phosphorus.CONCLUSIONS: CONCLUSIONS The hydrologic functions of wetlands depend on the connectivity of the wetland and major flows of water, which are controlled by Topography Hydrology HydrodynamicsRECOMMENDATIONS: RECOMMENDATIONS Sediment and phosphorus trapping by the Dorn Creek wetland could be significantly enhanced by increasing connectivity: Eliminating the drainage ditches; Installing a control structure on the main channel at the head of the wetland. You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
potter agu Burnell Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 26 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: January 03, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript QUANTIFYING WETLANDS FUNCTIONS: A CASE STUDY : QUANTIFYING WETLANDS FUNCTIONS: A CASE STUDY Ken Potter, Justin Rogers, Adam Hoffman, Chin Wu, John A. Hoopes, and David E. Armstrong University of Wisconsin-MadisonACKNOWLEDGEMENTS: ACKNOWLEDGEMENTS This research was supported by a grant from the U.S. Department of Agriculture and the Environmental Protection Agency.WETLAND SERVICES: WETLAND SERVICES Flood abatement Water quality improvement Sediment Phosphorus Nitrogen Habitat The first two services have rarely been rigorously quantified. Depend on connectivity of system.Slide4: UPPER DORN CREEK WETLANDUPPER DORN CREEK WETLAND: UPPER DORN CREEK WETLANDMEASUREMENT LOCATIONS: MEASUREMENT LOCATIONS Dorn Gage Ripp GageHYDRAULIC MODELING RESULTS: HYDRAULIC MODELING RESULTSCONCLUSIONS - PEAKS: CONCLUSIONS - PEAKS The wetland attenuated all peaks, with maximum attenuation for intermediate peaks. Small events did not reach wetland. Large events filled storage.CONCLUSIONS - SEDIMENT: CONCLUSIONS - SEDIMENT For the two largest events, which accounted for 96% of the sediment exported, the sediment outflow was about 100% greater than the inflow. Erosion of sediment in the main channel Erosion of sediment in the two primary ditchesCONCLUSIONS - PHOSPHORUS: CONCLUSIONS - PHOSPHORUS The wetland sequestered 40% of the dissolved reactive phosphorus. The wetland released 34% more particulate-bound phosphorus than it received. Overall, the wetland had no impact on the transport of total phosphorus.CONCLUSIONS: CONCLUSIONS The hydrologic functions of wetlands depend on the connectivity of the wetland and major flows of water, which are controlled by Topography Hydrology HydrodynamicsRECOMMENDATIONS: RECOMMENDATIONS Sediment and phosphorus trapping by the Dorn Creek wetland could be significantly enhanced by increasing connectivity: Eliminating the drainage ditches; Installing a control structure on the main channel at the head of the wetland.