Nonpoint Source Pollution Kathleen A Garland garlanduhcl edu
- Slides: 36
Non-point Source Pollution Kathleen A. Garland garland@uhcl. edu 281 -283 -3249 EIH Envirothon Teacher Workshop February 18, 2012
What’s a point source?
Industrial or municipal discharge
End-of-pipe �The key concepts for understanding point source pollution �Channelized flow �It has a distinct source �You can identify that source �You can control that source
Non-point source pollution �No specific source location Acid mine drainage
A map of eastern streams impacted by coal mine drainage
Agricultural runoff
During storms
Runoff from livestock
Concentrated animal feeding operations
Urban stormwater runoff
Characteristics of Non-point source �Sheet flow �No identified point where all discharge takes place �Source generally cannot be directly controlled
What’s in the water? �Debris
Sediment in stormwater
Chemicals of concern: Metals
COC’s: oils and greases
Thermal pollution
Nutrients
What are nutrients? �Things that make plants grow… �Nitrogen �Phosphorus �Potassium �Algae is a plant (sort of, a Protist, actually, but close to a plant…it photosythesizes) �Nutrients make algae grow—or overgrow!
Not all algal blooms are green…
Why is too much algae a bad thing?
Eutrophication �Nutrients feed algae �Algae bloom, creating large amounts of biomass �Algae die, sinking to the bottom of the water body �Algae decay, using up the oxygen in the lower layer of the water �Benthic (bottom-dwelling) organisms cannot survive �Fish eat benthics, so they either move away, or they die, too
Eutrophication leads to Hypoxia �Hypoxia: the condition of extremely low levels of oxygen in the water �In the Gulf of Mexico, we call the hypoxic zone— The Dead Zone
How does the Dead Zone Form?
Hypoxic zone in the GOM
Source area for GOM Hypoxic Zone
Global hypoxic zones
Impacts of hypoxia �Fisheries �Affects fish stocks �Affects nursery areas for future fish stocks �Water quality �Recreational �Fishing and boating �Shellfish �Coral reefs
Recent example: TPWD �http: //www. tpwd. state. tx. us/landwater/environ concerns/hab/redtide/status. phtml
Coral reefs in the northern GOM
Corals in FGBNMS
Invasive species
Who regulates non-point source pollution? �EPA: Section 319 of the Clean Water Act �http: //www. epa. gov/owow_keep/NPS/cwact. html �For freshwater systems �Requires states to implement plan �Coastal Zone Act Reauthorization Amendments (CZARA) Section 6217 �http: //www. epa. gov/owow_keep/NPS/czara. html �Specifically relates to coastal areas—like us!
Why should we care? �Galveston Bay is an estuary—a drowned river basin �The most productive aquatic habitats on the planet � Wetlands and marshes � Seabirds, turtles, shellfish, and ocean fish �Extremely vulnerable to pollution from NPS �Needs freshwater inflows to survive �Downstream from two massive urban areas: DFW and Houston Industrial pollution � Urban runoff � Agricultural runoff � �If those inflows are nutrient loaded, the Bay suffers
Chesapeake Bay �A very badly damaged estuary
We don’t want to get that way! �What can we do to reduce NPS? �Stay tuned! Dr. John Jacob, of Texas Coastal Watersheds will be speaking at 1: 30 on exactly this topic!
- Achillea
- Nchfma
- Garland library catalog
- Garland science 2008
- Michael garland nvidia
- Pippa garland
- Serosangineous
- Bio 1101
- Tecta america zero company
- Enzyme-linked receptor
- Defensive driving garland
- Guanilil transferasi
- Traslocone
- Stimulus
- Homograph of watch
- Somewhere over the rainbow judy garland
- Is eutrophication a point source pollution
- Point source pollution
- Water pollution
- Solution for noise pollution
- Point source pollution examples
- Water pollution solutions
- Thermal pollution
- Point source pollution
- Edu.sharif.edu
- Image source:http://graphicdesign.spokanefalls.edu
- Kathleen jerchel
- Kathleen
- Kathleen stassen berger
- Kathleen quinlan coma
- Kathleen quinlan measurements
- Kathleen lynch ucd
- Kathleen berry md
- Kathleen armour
- Mary kathleen heneghan
- Kathleen brehony phd
- Kathleen gasparian