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Microbial load from animal feces at a recreational beach
Wright, M.E.; Solo-Gabriele, H.M.; Elmir, S.; Fleming, L.E. (2009). Microbial load from animal feces at a recreational beach. Mar. Pollut. Bull. 58(11): 1649-1656. dx.doi.org/10.1016/j.marpolbul.2009.07.003
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X, more
Peer reviewed article  

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Keywords
    Enterococcus Thiercelin & Jouhaud, 1903 [WoRMS]; Marine
Author keywords
    Enterococci; Animal feces; Enumeration; Recreational water; Bacteria indicators; Non-point pollution sources

Authors  Top 
  • Wright, M.E.
  • Solo-Gabriele, H.M.
  • Elmir, S.
  • Fleming, L.E., more

Abstract
    The goal of this study was to quantify the microbial load (enterococci) contributed by the different animals that frequent a beach site. The highest enterococci concentrations were observed in dog feces with average levels of 3.9 × 107 CFU/g; the next highest enterococci levels were observed in birds averaging 3.3 × 105 CFU/g. The lowest measured levels of enterococci were observed in material collected from shrimp fecal mounds (2.0 CFU/g). A comparison of the microbial loads showed that 1 dog fecal event was equivalent to 6940 bird fecal events or 3.2 × 108 shrimp fecal mounds. Comparing animal contributions to previously published numbers for human bather shedding indicates that one adult human swimmer contributes approximately the same microbial load as one bird fecal event. Given the abundance of animals observed on the beach, this study suggests that dogs are the largest contributing animal source of enterococci to the beach site.

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