Spatial and temporal variation in indicator microbe sampling is influential in beach management decisions

Amber A. Enns, Laura J. Vogel, Amir M. Abdelzaher, Helena M Solo-Gabriele, Lisa R W Plano, Maribeth L. Gidley, Matthew C. Phillips, James Klaus, Alan M. Piggot, Zhixuan Feng, Ad J H M Reniers, Brian K Haus, Samir M. Elmir, Yifan Zhang, Nasly H. Jimenez, Noha Abdel-Mottaleb, Michael E. Schoor, Alexis Brown, Sumbul Q. Khan, Adrienne S. DameronNorma C. Salazar, Lora E. Fleming

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Fecal indicator microbes, such as enterococci, are often used to assess potential health risks caused by pathogens at recreational beaches. Microbe levels often vary based on collection time and sampling location. The primary goal of this study was to assess how spatial and temporal variations in sample collection, which are driven by environmental parameters, impact enterococci measurements and beach management decisions. A secondary goal was to assess whether enterococci levels can be predictive of the presence of Staphylococcus aureus, a skin pathogen. Over a ten-day period, hydrometeorologic data, hydrodynamic data, bather densities, enterococci levels, and S. aureus levels including methicillin-resistant S. aureus (MRSA) were measured in both water and sand. Samples were collected hourly for both water and sediment at knee-depth, and every 6 h for water at waist-depth, supratidal sand, intertidal sand, and waterline sand. Results showed that solar radiation, tides, and rainfall events were major environmental factors that impacted enterococci levels. S. aureus levels were associated with bathing load, but did not correlate with enterococci levels or any other measured parameters. The results imply that frequencies of advisories depend heavily upon sample collection policies due to spatial and temporal variation of enterococci levels in response to environmental parameters. Thus, sampling at different times of the day and at different depths can significantly impact beach management decisions. Additionally, the lack of correlation between S. aureus and enterococci suggests that use of fecal indicators may not accurately assess risk for some pathogens.

Original languageEnglish
Pages (from-to)2237-2246
Number of pages10
JournalWater Research
Volume46
Issue number7
DOIs
StatePublished - May 1 2012

Fingerprint

Beaches
temporal variation
Pathogens
beach
Sand
spatial variation
Sampling
sand
pathogen
sampling
Water
Health risks
Tides
Solar radiation
water
health risk
Rain
solar radiation
shoreline
skin

Keywords

  • Beaches
  • Enterococci
  • Management
  • S. aureus
  • Variability

ASJC Scopus subject areas

  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution
  • Ecological Modeling

Cite this

Enns, A. A., Vogel, L. J., Abdelzaher, A. M., Solo-Gabriele, H. M., Plano, L. R. W., Gidley, M. L., ... Fleming, L. E. (2012). Spatial and temporal variation in indicator microbe sampling is influential in beach management decisions. Water Research, 46(7), 2237-2246. https://doi.org/10.1016/j.watres.2012.01.040

Spatial and temporal variation in indicator microbe sampling is influential in beach management decisions. / Enns, Amber A.; Vogel, Laura J.; Abdelzaher, Amir M.; Solo-Gabriele, Helena M; Plano, Lisa R W; Gidley, Maribeth L.; Phillips, Matthew C.; Klaus, James; Piggot, Alan M.; Feng, Zhixuan; Reniers, Ad J H M; Haus, Brian K; Elmir, Samir M.; Zhang, Yifan; Jimenez, Nasly H.; Abdel-Mottaleb, Noha; Schoor, Michael E.; Brown, Alexis; Khan, Sumbul Q.; Dameron, Adrienne S.; Salazar, Norma C.; Fleming, Lora E.

In: Water Research, Vol. 46, No. 7, 01.05.2012, p. 2237-2246.

Research output: Contribution to journalArticle

Enns, AA, Vogel, LJ, Abdelzaher, AM, Solo-Gabriele, HM, Plano, LRW, Gidley, ML, Phillips, MC, Klaus, J, Piggot, AM, Feng, Z, Reniers, AJHM, Haus, BK, Elmir, SM, Zhang, Y, Jimenez, NH, Abdel-Mottaleb, N, Schoor, ME, Brown, A, Khan, SQ, Dameron, AS, Salazar, NC & Fleming, LE 2012, 'Spatial and temporal variation in indicator microbe sampling is influential in beach management decisions', Water Research, vol. 46, no. 7, pp. 2237-2246. https://doi.org/10.1016/j.watres.2012.01.040
Enns, Amber A. ; Vogel, Laura J. ; Abdelzaher, Amir M. ; Solo-Gabriele, Helena M ; Plano, Lisa R W ; Gidley, Maribeth L. ; Phillips, Matthew C. ; Klaus, James ; Piggot, Alan M. ; Feng, Zhixuan ; Reniers, Ad J H M ; Haus, Brian K ; Elmir, Samir M. ; Zhang, Yifan ; Jimenez, Nasly H. ; Abdel-Mottaleb, Noha ; Schoor, Michael E. ; Brown, Alexis ; Khan, Sumbul Q. ; Dameron, Adrienne S. ; Salazar, Norma C. ; Fleming, Lora E. / Spatial and temporal variation in indicator microbe sampling is influential in beach management decisions. In: Water Research. 2012 ; Vol. 46, No. 7. pp. 2237-2246.
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