1. Lake Water Chemistry ► Phosphorus ► Nitrate ► Silica

2. Chemical Interests ► Lake Production  Levels Often Predict Entire Food Web ► Direct Effects on Spec. Cond., D.O., etc. ► Biotic Composition  Direct/Indirect Relationships ► Visual Effects

3. Phosphorus ► Total Phosphorus  Onondaga Very High in Hypo.  Green’s Mono Layer  Catlin and Wolf Oligotrphic

4. Phos. Cont.

5. Nitrate

6. Green Lake Nitrate

7. Arbutus Lake Nitrate ► Mostly Human Input ► Deeper High Levels From Density Differences ► Wolf Lakes Epi Levels High From Runoff

8. Silica Concentrations ► Concentration Effects Algal Blooms ► Occurs From Weathering of Rocks ► Cycle Not As Well Known As Others

9. Green Lake Silica ► Very High Concentrations Compared to Other Lakes ► Chemo and Mono Layer ► Overall Depth

10. Conclusion ► Several Factors Effect the Concentrations of Chemicals Found Within a Lake.  Catchment  Physical Features  Paleolimnology  Anthropogenic Influences ► Each of These Factors Then Effects The Rest of The lakes Biotic and Abiotic Features