The Use of Ecological Risk Assessments in a Watershed Level Context
Man & Nature
Pollution Control
25 Year Reality Check
Why were goals not attained…?
Indian River Lagoon
Watershed Approach
Ecological Risk Assessment
Exposure & Effects Profiles
Multiple Stressors
Total Ecosystem Risk
Watershed Level Risk Assessment
WLRA incorporates ...
But …. Time … ??? Expense … ???
Multi-Tiered Process
Example
Tier 1 - Zinc Quotient Methodology
Tier 2 - Chloride Place-based Methodology
Tier 3 - Low flows & Channelization Site-specific Methodology
Tier 3 Site-specific Methodology
WLRA: Total Ecosystem Assessment
WLRA: Summary
Acknowledgments
Thank You !
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