Water quality assessment in the Mexican Caribbean: Impacts on the coastal ecosystem

Hernandez-Terrones, L. M., Null, K. A., Ortega-Camacho, D., & Paytan, A. (2015). Water quality assessment in the Mexican Caribbean: Impacts on the coastal ecosystem. Continental Shelf Research, 102, 62-72.
Metadata
TitleWater quality assessment in the Mexican Caribbean: Impacts on the coastal ecosystem
AuthorsL. Hernandez-Terrones, K. Null, D. Ortega-Camacho, A. Paytan
AbstractCoastal zones are dominated by economically important ecosystems, and excessive urban, industrial, agricultural, and tourism activities can lead to rapid degradation of those habitats and resources. Groundwater in the Eastern Yucatan Peninsula coastal aquifer discharges directly into the coastal ocean affecting the coral reefs, which are part of the Mesoamerican Coral Reef System. The composition and impacts of groundwater were studied at different coastal environments around Akumal (SE Yucatan Peninsula). Radium isotopes and salinity were used to quantify fresh groundwater and recirculated seawater contributions to the coastal zone. Excess Ra distribution suggests spatially variable discharge rates of submarine groundwater. High NO3- levels and high coliform bacteria densities indicate that groundwater is polluted at some sites. Dissolved phosphorous content is elevated in the winter and during the high tourism season, likely released from untreated sewage discharge and from aquifer sediments under reducing conditions.
JournalContinental Shelf Research
Date2015
Volume102
Start page62
End page72

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