USGS Home
SOFIA - SFRSF


HOME
Search the SFRSF site Learn about this site Sign up SFRSF Directory Upcoming events Resource Management Exhibits Science Displays
  ACME and SICS
  Historical Settings
  Hydrology
  Invasive Exotic Species
  Landscape Synthesis and Ecological Modeling
  Mercury
Nutrients

  Our Coastal Ecosystems
  Sustainable Agriculture
  Wildlife and Wetland Ecology
Presentations and Discussions Technology Briefings May 1999 Forum


SOFIA Home

Last updated: October 11, 2002
South Florida Restoration Science Forum

Nutrients

What sources are significant and why?

Part 2: Surface water P loads & concentrations before and after P controls

map of P loads
Florida Bay P loads (MT/y) have order of magnitude accuracy. Click on image above for larger version.

(Graphs below correspond to map above. Click on graphs for larger version.)

Flow, kac-ft / yr
graph

P load, MT / yr
graph

Flow weighted [P], ppb
graph

map and ave. sediment P graph
  • Much of the runoff phosphorus is deposited in ecosystem sediments.
  • Enriched sediments become an internal source of P loading.
  • Typically, the P content of enriched sediments takes a long time to return to pristine conditions.


Next Next: Identification of phosphorus sources using uranium isotopes


U.S. Department of the Interior, U.S. Geological Survey, Center for Coastal Geology
This page is: http://sofia.usgs.gov/sfrsf/rooms/nutrients/sources/loads.html
Comments and suggestions? Contact: Heather Henkel - Webmaster
Last updated: 11 October, 2002 @ 09:42 PM (HSH)