1. Water Monitorin g

2. When Water Testing… Testers look for many things! Turbidity: how many suspended particles are in water (FTU). More Turbid  less PS  less O 2 in water

3. High or Low Turbidity? Low Turbidity HighTurbidity

4. Salinity How much salt is in water. Ocean = high salinity River = low salinity Changing levels will kill orgs in water. Salt 

5. E.Coli Bacteria Used as an indicator species to detect cont. water supplies b/c it’s found in human/animal feces.

7. Total Coliform Instead of testing for all types of bacteria, usually total coliform is measured 1 colony of bacteria per 100mL is unsafe to drink (EPA)

8. Dissolved Oxygen O 2 in water Healthy water = DO > 8 ppm Oxygen-poor water <2ppm; only supports detritivores O 2 removed by respiration, added by PS! Colder water holds more DO!

9. Detritivores Orgs that eat dead organic matter (dead leaves, algae, etc) Land: termites, fungus Water: shrimp (turds of the ocean), worms, snails (dead stuff at bottom)

10. I want your Bod… Biological Oxygen Demand: demand for O 2 that detritivores place on system  how much O 2 is used by orgs over a 5 day period

12. Nitrates, NO 3 - Plants love NO 3 (often limiting resource)! Comes from fertilizers and manure runoff. Too much runoff in water causes eutrophication.

13. NO 3 Cause Blue Baby Syndrome! High NO 3 in ground water  decreased O 2 carrying capacity of hemoglobin in babies  death

14. Phosphates, PO 4 Plants love them! Use of detergents and manure  runoff (car wash, Windex) Causes eutrophication

16. Guano! Contains much phosphates!

17. Transport of Nitrate and Phosphate Fertilizers… Burns fossil fuels  global warming

18. Fishies Die When.. 1) Sewage/waste added  stimulate O 2 consumption by detritivores 2) Algal Blooms: eutrophication kills fish

19. Kunming, Yunnan province: Workers try to clear blue-green algae from Dianchi lake

20. Steps of Eutrophication 1.Nutrients (NO 3 and PO 4 ) are added to water 2.Increase in nutrients cause an algae bloom 3.As bloom progresses, algae begins to die 4.Dead algae accumulates on bottom of lake

21. 5) Dead org. matter supports a boom in detritivore pops. 6) Detritivores rapidly rob water of its O2, suffocating most orgs (like fish) Steps of Eutrophicati on

22. Controlling Eutrophication Biofiltration: NO3 and PO4 removed by plants before running off

24. Controlling Eutrophication Use PO 4 -free detergents Wash car at a car wash (recycle H 2 O, treated water)