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Published online 1 May 2008
Published in J Environ Qual 37:898-905 (2008)
DOI: 10.2134/jeq2007.0312
© 2008 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
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Survival Potential of Escherichia coli and Enterococci in Subtropical Beach Sand: Implications for Water Quality Managers

A. Hartza,e, M. Cuveliera,e, K. Nowosielskia, T. D. Bonillab, M. Greena, N. Esiobuc, D.S. McCorquodalea and A. Rogersond,*

a Oceanographic Center of Nova Southeastern Univ., 8000 N. Ocean Dr., Dania Beach, FL 33004
b Dep. of Infectious Diseases and Pathology, Univ. of Florida, Gainesville, FL 32611
c Dep. of Biological Sciences, Florida Atlantic Univ., Davie, FL 33314
d Coll. of Science and Mathematics, Fresno State Univ., Fresno, CA 93740
e contributed equally to this work


Figure 1
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  		Fig. 1. Survival of Escherichia coli in sterile beach sand and water (colony-forming units [CFU] kg–1 sand or CFU L–1) over a range of salinities at 30°C. Solid symbols represent sand; open symbols represent water. Shapes correspond to salinity: diamond, 6 practical salinity units [PSU]; square, 15 PSU; triangle, 32 PSU; circle, 38.5 PSU. Error bars represent 1 SE (n = 3).

 

Figure 2
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  		Fig. 2. Survival of enterococci in sterile beach sand and water (colony-forming units [CFU] kg–1 sand or CFU L–1 water) at different temperatures (°C) at 32 practical salinity units. Solid symbols represent sand; open symbols represent water. Shapes correspond to temperature: diamonds, 20°C; squares, 30°C; triangles, 40°C. Error bars represent 1 SE (n = 3).

 

Figure 3
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  		Fig. 3. Numbers of E. coli and enterococci (colony-forming units [CFU] L–1) in water up to 20 m from shore. Error bars represent 1 SE (0.1 m, n = 110; 1 m, n = 110; 3 m, n = 110; 10 m, n = 126; 20 m, n = 128).

 




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