Figure 4.
Comparison of top portion (0.5-6 cm) versus bottom portion (6.5-13 cm) of depth core. A) Averaged levels of enterococci before beach renovation, consisting of 10 depth cores starting August 28, 2009 and ending July 8, 2010. Top is significantly lower than bottom, P <0.05. B) Averaged levels of enterococci during and after beach renovation, corresponding to 7 depth cores starting September 6, 2010 and ending October 8, 2011. Top is significantly higher than bottom, P <0.05. Data is expressed as mean ± SEM.