The relationship between environmental parameters and microbial water quality at two Costa Rican beaches from 2002 to 2017

MARINE POLLUTION BULLETIN

卷:163

Article

Laureano-Rosario, Abdiel E.¹  Symonds, Erin M.¹  Gonzalez-Fernandez, Adriana²  Lizano, Omar G. R.³  Alvarado, Darner Mora⁴  Navarro, Pablo Rivera⁴  Badilla-Aguilar, Andrei⁴  Rueda-Roa, Digna¹  Otis, Daniel B.¹  Harwood, Valerie J.²  Cairns, Maryann R.⁵  Muller-Karger, Frank E.¹ 

[1] Univ S Florida, Coll Marine Sci, St Petersburg, FL 33701 USA

[2] Univ S Florida, Dept Integrat Biol, 4202 East Fowler Ave, Tampa, FL 33620 USA

[3] Univ Costa Rica UCR, Res Ctr Sci Sea, Oceanog Informat Module, San Jose 2060, Costa Rica

[4] Inst Costarricense Acueductos & Alcantarillados, Lab Nacl Aguas, Tres Rios, Cartago, Costa Rica

[5] Southern Methodist Univ, Dept Anthropol, Dallas, TX 75205 USA

关键词: Recreational water quality;    Fecal coliforms;    Enterococci;    Remote sensing;    Tropics;   

DOI  :  10.1016/j.marpolbul.2020.111957

来源: Elsevier

【 摘 要 】

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 Jaco 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 Jaco, 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.

【 授权许可】

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