Скачать презентацию Module 4 and 5 Stream Ecology Detecting Nutrient Скачать презентацию Module 4 and 5 Stream Ecology Detecting Nutrient

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Module 4 and 5 Stream Ecology Detecting Nutrient Impacts on Stream Water Quality Case Module 4 and 5 Stream Ecology Detecting Nutrient Impacts on Stream Water Quality Case Study- Cape Fear River, North Carolina

Module 4/5 Stream Nutrients – Cape Fear River Background: These slides present: 1. background Module 4/5 Stream Nutrients – Cape Fear River Background: These slides present: 1. background information on the Cape Fear River, N. C. and Tischer Creek, Duluth, MN for the purpose of discussing stream nutrient chemistry analysis in lab (only Cape Fear as of 5 -16 -03) 2. Specific techniques for students to review in or out of class (packaged as separate slide file from Modules 8/9 and 10/11 that cover Lab techniques for lake and stream surveys) 3. Note: There will be accompanying information in the form of · pdf, rtf and. doc files of a lab lesson handout(s) and supporting info · pdf, rtf and. doc files of analytical methods for a suite of water quality parameters (see notes on slides for further information) Developed by: R. Axler Updated: May 2003 U 1 -m 4/5 -s 2

 • Multi-agency monitoring program led by UNC-Wilmington • Data animation concept initiated by • Multi-agency monitoring program led by UNC-Wilmington • Data animation concept initiated by Rich Huber (UNC- Wilmington) • DVT developed by Norm Will et al. (NRRIWOW) Features · Largest NC river system 9000 sq. mi. · Importance –industry, transportation, recreation, drinking water, aesthetics · Estuary – nursery for fish crabs, shrimp · >1. 5 million people Developed by: R. Axler Water Resource / Quality Issues · human wastewater · swine and poultry wastewater · logging · row crop agriculture · industrial wastewater · >280 permitted point sources · urban stormwater Updated: May 2003 U 1 -m 4/5 -s 3

Lower Cape Fear R. in SE N. Carolina Major river system • 1995 -2002 Lower Cape Fear R. in SE N. Carolina Major river system • 1995 -2002 monthly data available at www. uncwil. edu/cmsr/aquaticecology/lcfrp • full Annual WQ reports also on web with interpretation by UNC-Wilmington scientists River Run DVT: • animates date either as a time series for 1 site (out of 15) or upstream to downstream at one date • T, DO, p. H, salinity, EC, turbidity, fecals, NO 3, NH 4, TN, ortho-P, TP, chlorophyll-a Developed by: R. Axler Updated: May 2003 U 1 -m 4/5 -s 4

 • salinity 0 – 30 ppt • variable DO, fecals, NH 4 N, • salinity 0 – 30 ppt • variable DO, fecals, NH 4 N, TP, … freshwater • many dramatic events in Aug-Sep ocean estuary Developed by: R. Axler Updated: May 2003 U 1 -m 4/5 -s 5

Hurricane Bonnie STORM EFFECTS • Salinity • DO • Fecals • Turbidity • nutrients Hurricane Bonnie STORM EFFECTS • Salinity • DO • Fecals • Turbidity • nutrients September 1998 – Some things went up and some went down http: //www. uncwil. edu/riverrun/index. html Developed by: R. Axler Updated: May 2003 U 1 -m 4/5 -s 6

So what happens nearly every Aug. Sep in N. Carolina ? Hurricanes ! Bonnie So what happens nearly every Aug. Sep in N. Carolina ? Hurricanes ! Bonnie in Sept ’ 98 Other hurricanes or gales Bertha Developed by: R. Axler Updated: May 2003 Fran U 1 -m 4/5 -s 7

A closer look at early September 1998 Hurricane Bonnie hit on Aug 26, 1998 A closer look at early September 1998 Hurricane Bonnie hit on Aug 26, 1998 Here is Aug’ 98 : pre-Bonnie DO colored ----station gradient --Developed by: R. Axler Updated: May 2003 U 1 -m 4/5 -s 8

Another look at the DO record straddling Hurricanes Fran, Bonnie and Floyd Cape Fear Another look at the DO record straddling Hurricanes Fran, Bonnie and Floyd Cape Fear River Fran Developed by: R. Axler Bonnie Updated: May 2003 Floyd U 1 -m 4/5 -s 9

END Developed by: R. Axler Updated: May 2003 U 1 -m 4/5 -s 10 END Developed by: R. Axler Updated: May 2003 U 1 -m 4/5 -s 10