The effects of nutrient pollution on the neuse river estuary
This presentation is the property of its rightful owner.
Sponsored Links
1 / 15

The Effects of Nutrient Pollution on the Neuse River Estuary PowerPoint PPT Presentation


  • 49 Views
  • Uploaded on
  • Presentation posted in: General

The Effects of Nutrient Pollution on the Neuse River Estuary. Valerie Winkelmann. What is nutrient pollution or eutrophication?. A slow natural process of enrichment Produces enhanced productivity in the body of water Caused by elevated nutrient loading

Download Presentation

The Effects of Nutrient Pollution on the Neuse River Estuary

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


The effects of nutrient pollution on the neuse river estuary

The Effects of Nutrient Pollution on the Neuse River Estuary

Valerie Winkelmann


What is nutrient pollution or eutrophication

What is nutrient pollution or eutrophication?

  • A slow natural process of enrichment

  • Produces enhanced productivity in the body of water

  • Caused by elevated nutrient loading

  • Nitrogen is of main concern in Neuse River Estuary (NRE)


Eutrophication leads to

Eutrophication leads to…

  • Accelerated enrichment by artificial means produces population explosions of phytoplankton, a.k.a. algal blooms

  • Algae exceed carrying capacity and die

  • Bacterial decomposition creates high BOD

  • Compounded by low DO due to summer water temps

  • Hypoxic or even anoxic conditions


So what

SO WHAT?


Problems

Problems…

  • Fish kills result from anoxic conditions or toxic blooms

  • Harms shellfisheries as well

  • Phytoplankton are base of the food chain

    • Organisms selectively feed

  • Pfiesteria and other toxic blooms

  • Alter community structure


Sources of nutrient pollution

Sources of nutrient pollution

  • Anthropogenic

    • Urban: wastewater treatment plants

    • Industrial: point source

    • Agricultural: fertilizer and animal waste

  • Sediments: highly organic sediments decompose, oxygen sink

  • Atmospheric deposition


Over 5 years

Over 5 years…

  • Phosphorous loading decreased 14%

  • Total nitrogen loading increased 16%

  • Total inorganic nitrogen increased 38%


The effects of nutrient pollution on the neuse river estuary

FYI

  • 441 point dischargers contributed 3.34 x 10^8 L effluent/d

  • 554 concentrated animal operations

    • Swine production in the basin has increased 285% in the last decade

    • In 1998, 5.9 x 10^9 kg manure from pigs and poultry contributed 4.1 x 10^7 kg N and 1.4 x 10^7 kg P


Solutions

Solutions

  • State regulations require a 30% reduction in N loading by 2003

    • Reduce impervious cover

    • Retention ponds

    • Riparian buffers

    • Strict regulation on point source polluters

    • Nutrient management

    • Controlled drainage

    • Conservation tillage system


Eventual outcome

Eventual Outcome


Acknowledgments

Acknowledgments

  • Ms. Kelly McFarlin

    Michigan Technological University

    Houghton, MI


  • Login