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Published online 26 April 2006
Published in J Environ Qual 35:889-897 (2006)
DOI: 10.2134/jeq2005.0328
© 2006 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Identifying Sources of Fecal Contamination Inexpensively with Targeted Sampling and Bacterial Source Tracking

Jennifer L. McDonalda, Peter G. Hartelb,*, Lisa C. Gentita, Carolyn N. Belchera, Keith W. Gatesa, Karen Rodgersb, Jared A. Fisherb, Katy A. Smitha and Karen A. Paynec

a Marine Extension Service, 715 Bay St., University of Georgia, Brunswick, GA 31520-4601
b Department of Crop & Soil Sciences, 3111 Plant Sciences, University of Georgia, Athens, GA 30602-7272
c Marine Extension Service, 30 Ocean Science Circle, University of Georgia, Savannah, GA 31411-1011


Figure 1
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  		Fig. 1. Location of sampling sites at St. Andrews Park on Jekyll Island during (A) calm (21 and 22 Apr. 2004) and (B) stormy (24 Feb. 2005) conditions. Each location shows the site number (boldface top number), turbidity (middle number), and number of fecal enterococci per 100 mL (bottom number). If the number of fecal enterococci exceeds the maximum allowable for a grab sample (>104 fecal enterococci per 100 mL), then the bottom number is shaded. White areas define beach, light gray areas define seawater, medium gray areas define marsh, and the dark gray areas define land. The scale is 1:11 000.

 

Figure 2
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  		Fig. 2. Location of sampling sites around Sea Island during (A) calm (11–13 May 2004) and (B) stormy (3 May 2004) conditions. Each location shows the site number (top number), dissolved O2 (top middle number, mg L–1), fluorometry (bottom middle number, no dimension), and fecal enterococci (bottom number, number per 100 mL). If dissolved O2 is <3.0 mg L–1 or the fluorometric value is >100 or the number of fecal enterococci exceeds the maximum allowable for a grab sample (>104 fecal enterococci per 100 mL), then the number is shaded. Fluorometry was not conducted in Postell Creek or Blackbanks River during calm conditions, or any site during stormy conditions. White areas define beach, light gray areas define seawater, medium gray areas define marsh, and the dark gray areas define land. The scale is 1:11 000.

 




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