| Tóm tắt: | An important zone of mangrove distribution in Yucatan is the Natural Protected Area Ría Celestún, located to the northwest of the Peninsula of Yucatan. The main impacts in this ecosystem are the interruption of water flows, uncontrolled urban growth, change in land use and deforestation. The soil of the region is karstic and highly permeable; as there are no rivers, the only source of water are the rainfall (760 mm year-1) and groudwater discharges as springs, which have its greater influence in the inner zone of the lagoon, being reflected in the gradient of lower seawater salinity in the inner zone and higher seawater salinity in the mouth that connects with the Gulf of Mexico. Due to this gradient, different mangrove forest structure patterns, dominant species and productivity were observed, recording the higher forest structure and productivity values de 4,09 g m2 day-1 in the inner zone and of 2,59 m2 day-1 in the sea zone. The mangrove productivity in each zone of the lagoon is determined by climatic variability of the region (“nortes”, dry and rain seasons). The different structure patterns and litter production were determined by soil salinity and climatic condition. Therefore, the management strategies should consider the structure and natural behavior and the spatial and tempo-ral variability of the mangrove ecosystems, and their vulnerability in the hydrology and climate change.
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