Rose M. Cory: Hydrogen peroxide and harmful algal blooms in Lake Erie

2. Are toxin-forming
cyanobacteria better
able to tolerate
oxidative stress?
H2O2 = hydrogen peroxide
Oxidative stressor

3. 0
500
1000
1500
2000
140 190 240 290
H2O2(nM)
Day of year
2014 2015
Typical range in fresh
or coastal waters
Cory et al. submitted

4. 0
20
40
60
80
100
120
140
31-May 10-Jul 19-Aug 28-Sep 7-Nov
― Photochemical
production of
H2O2
(nM hr-1)
― UV
― CDOM
CDOM + UV  H2O2
Cory et al. submitted

5. 0
500
1000
1500
2000
140 190 240 290
H2O2(nM)
Day of year
1
10
100
LogChla(µgL-1)
2014 2015
Cory et al. submitted