20. What arc potential indicators of water quality, ecosystem health? 



21. What has been the impact of power plants on tributaries? 



22. What is the impact of pesticides and herbicides on the Bay? 



23. What is the impact of commercial shipping, other sources of petroleum hydrocarbons? 



24. Arc relevant studies on particular questions available from other estuaries? 



25. What processes are most important to nutrient regeneration? 



26. Are C, N, and P flows all in the same direction? 



27. What is the significance of migratory and resident birds on biological populations, nutrient and carbon 

 now? 



28. What historical changes can be perceived in the Bay? Last 10 years? Last 300 years? 



19 



