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PHOSPHATE IN LAKES AND STREAMS

PHOSPHATE IN LAKES AND STREAMS. PHOSPHORUS IN SURFACE WATER. PARTICULATE PHOSPHORUS In living things In minerals or adsorbed to clays, etc. Adsorbed to dead organics DISSOLVED PHOSPHORUS Orthophosphates Polyphosphates Organic molecules with phosphorus Esters of phosphate.

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PHOSPHATE IN LAKES AND STREAMS

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  1. PHOSPHATE IN LAKES AND STREAMS

  2. PHOSPHORUS IN SURFACE WATER • PARTICULATE PHOSPHORUS • In living things • In minerals or adsorbed to clays, etc. • Adsorbed to dead organics • DISSOLVED PHOSPHORUS • Orthophosphates • Polyphosphates • Organic molecules with phosphorus • Esters of phosphate

  3. P IN STRATIFIED LAKES

  4. TOTAL P AND CHLOROPHYLL

  5. NUTRIENT PROFILES OF THE RIFT LAKES SRP= Soluble Reactive Phosphate

  6. PHOSPHATE CYCLE

  7. RED MUD – BLACK MUD

  8. P AT SEDIMENT – WATER INTERFACE

  9. Chambers oxygenated Chambers anoxic

  10. Conditions 30cm from bottom in 14M deep lake.

  11. SULFATE REDUCING BACTERIA AND RELEASE OF PHOSPHATE

  12. EPIPELIC ALGAE, PH & PHOSPHATE

  13. MACROPHYTES PUMPING P FROM SEDIMENT TO WATER COLUMN

  14. FORMS OF P IN THE EPILIMNION

  15. CALCITE AND P ADSORPTION

  16. ANTHROPOGENIC SOURCES

  17. PHOSPHORUS AND LAKE 226

  18. P AND PRIMARY PRODUCTION

  19. PRODUCTIVITY AND TOTAL PHOSPHORUS

  20. NUTRIENT LOADING • WATERSHED AREA • AREAL INPUT RATE • FLUSHING RATE • EXTENT OF MIXING

  21. SOURCES FOR NUTRIENT LOADING IN CHESAPEAKE BAY

  22. POINT-SOURCE DECLINE IN PHOSPHATE LOADING IN CHESAPEAKE BAY

  23. LAKE POWELL AND LAKE MEADE

  24. MISSISSIPPI RIVER

  25. LAKE PONCHARTRAIN

  26. LAKE PONCHARTRAIN

  27. LAKE ERIE

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