Title: Sand, Sun, and E' coli
1Sand, Sun, and E. coli
Just Another Day at the Beach
7th Annual Water Monitoring Conference February
1-2, 2007 Ames, IA Eric OBrien
2Presentation Overview
- Beach Monitoring In Iowa
- Program evolution
- Recent changes
- Results
- Intensive Studies
- Microbial source tracking
- Public health study
- Future Directions
3Program Evolution/ChangesMonitoring Frequency
- Early Monitoring (IDNR personnel)
- More Recent (UHL personnel)
4Beach Sampling Design
5Program Evolution/ChangesPolicy
- Beach Advisories
- 2000-02 three indicators
- E. coli in 2003
- Streamlining
- Changes in how advisories are issued each year
6Program Evolution/ChangesPublic Relations
7Program Evolution/ChangesChanging Parameters
- Ö - Monitored at all beaches for full season
- - Monitored at subset of beaches for full
season
8Cyanotoxin SamplingMicrocystin Analysis
9Beach Results 2000-2006
10Beach Results 2006E. coli
11Beach Results 2006Total Microcystin
Concentrations
12Intensive Studies
- Microbial Source Tracking
- DNA Studies
- Lake Darling (toolbox)
- Backbone Lake / Maquoketa River Watershed
- Chemical Tracers
- Optical Brighteners
- Human Health
- Iowa Beach Study
13Intensive StudiesLake Darling
- Toolbox Approach
- DNA Ribotyping
- Multiple Antibiotic Resistance Analysis
- Pathogen Analysis
- Sterols
- Caffeine/cotinine
- Hotspot sampling
14(No Transcript)
15Intensive Studies Backbone Lake / Maquoketa
River Watershed
16Intensive StudiesOptical Brighteners
- Optical Brighteners used as tracer for human
fecal contamination. - Found in detergents
- Linens
- Toilet paper
17Clear Lake Sampling 7-10-06
18Clear Lake Sampling 10-10-06
19Intensive StudiesIowa Beach Study
- Strong relationships observed between
- Cyanotoxin ? skin rash
- Enterococci? GI distress
20Future Directions
- Indicator microorganisms
- Sample frequency
- Lakes Information System
- Cyanotoxin surveys
21Acknowledgements
- DNR Parks Staff
- UHL, Environmental Microbiology and Limnology
- DNR Water Monitoring and Assessment Staff
- Numerous Watershed Coordinators
- Tim Wilson
- DNR Communications Bureau
- IDPH
- CHEEC and UI College of Public Health
- DNR Field Services
- Marshall University, Virginia Tech, University of
Georgia - Many, many others