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Título del libro: Co2 Acidification In Aquatic Ecosystems: An Integrative Approach To Risk Assessment
Título del capítulo: Overview on the impacts of CO2 acidification in a very sensible and complex system: The cenotes, Yucatan, Mexico

Autores UNAM:
FLOR ELISA DEL ROSARIO ARCEGA CABRERA;
Autores externos:

Idioma:

Año de publicación:
2022
Palabras clave:

Cenotes; Coastal aquifer; Groundwater; Karstic system; Mangroves; Vulnerability


Resumen:

Carbonate minerals represent Earth?s largest carbon (C) reservoir but have long been considered inconsequential to the global C cycle over long periods of time (e.g., >106years). However, carbonate mineral reactions may impact the carbon cycle at short time scales (102?105 years) particularly when atmospheric pCO2 changes by several hundred ppm (Martin, 2017). The cenotes system is a labyrinth of freshwater sources considered one of the main groundwater reservoirs in the world. It is located in the Yucatan Peninsula, Mexico, and is mainly composed of calcium carbonate-based ores. As they are easily dissolved, an increase in CO2 concentrations would result in acidification and hence promote the potential dissolution of carbonate systems such as the cenotes in Yucatan?s karstic system. Dissolution of carbonate minerals increases the overall vulnerability of the system and poses a serious threat to the health of groundwater-dependent ecosystems, which include the cenotes, mangroves, coral reefs, among others. We present a brief but in-depth analysis on the current status of the cenotes system in the Yucatan Peninsula and some of the main impacts that could be expected under increasing global CO2 concentrations. © 2022 Elsevier Inc. All rights reserved.


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