Marine Science Faculty Publications
The Relationship Between Environmental Parameters and Microbial Water Quality at Two Costa Rican Beaches from 2002 to 2017
Document Type
Article
Publication Date
2021
Keywords
Recreational water quality, Fecal coliforms, Enterococci, Remote sensing, Tropics
Digital Object Identifier (DOI)
https://doi.org/10.1016/j.marpolbul.2020.111957
Abstract
Environmental conditions influence fecal indicator bacteria (FIB) levels, which are routinely used to characterize recreational water quality. This study examined 15 years of environmental and FIB data at Puntarenas and Jacó beach, Costa Rica. FIB relationships with sea level, wave height, precipitation, direct normal irradiance (DNI), wind, and turbidity were analyzed. Pearson's correlations identified lags between 24 and 96 h among environmental parameters and FIB. Multiple linear regression models composed of environmental parameters explained 24% and 27% of fecal coliforms and enterococci variability in Jacó, respectively. Puntarenas’s models explained 17–26% of fecal coliforms and 12–18% enterococci variability. Precipitation, sea level anomalies, and wave height most frequently explained FIB variability. Hypothesis testing often identified significant differences in precipitation, wave height, daily sea level anomalies, and maximum sea level 24 h prior between days with and without FIB threshold exceedance. Unexpected FIB interactions with DNI, sea level, and turbidity highlight the importance of future investigations.
Was this content written or created while at USF?
Yes
Citation / Publisher Attribution
Marine Pollution Bulletin, v. 163, art. 111957
Scholar Commons Citation
Laureano-Rosario, Abdiel E.; Symonds, Erin M.; González-Fernández, Adriana; Lizano R., Omar G.; Mora Alvarado, Darner; Rivera Navarro, Pablo; Badilla-Aguilar, Andrei; Rueda-Roa, Digna; Otis, Daniel B.; Harwood, Valerie J.; Cairns, Maryann R.; and Muller-Karger, Frank E., "The Relationship Between Environmental Parameters and Microbial Water Quality at Two Costa Rican Beaches from 2002 to 2017" (2021). Marine Science Faculty Publications. 1587.
https://digitalcommons.usf.edu/msc_facpub/1587
