Resumo

AGRAZ-HERNANDEZ, Claudia Maricusa et al. Carbon stocks in a mangrove ecosystem in northern Mexico: environmental changes for 35 years. Rev. Mex. Biodiv. [online]. 2020, vol.91, e912910.  Epub 22-Dez-2020. ISSN 2007-8706.  https://doi.org/10.22201/ib.20078706e.2020.91.2910.

The carbon stock in mangroves that border the estuarine system of San Blas-Laguna Grande de Mexcaltitán, Nayarit, Mexico, during the period 1980-2015, defined 3 environmental zones considering different anthropic pressures and the amount of storage carbon in the arboreal biomass and in the soil. These zones show differences in the width and interstitial water residence time period. Biomass and carbon stock (aereal and underground), as well as the soil carbon storage at 20 cm depth, increased from the south to the northern zone. These parameters indicated low values compared to results from a number of authors in primary type mangroves. This was caused by the loss of structure and ecosystem functions, and it is considered now as a secondary mangrove forest, with displacement of Rhizophora mangle by Avicennia germinans and Laguncularia racemosa. This is the reason why is key to produce information that allow to confirm the ecosystem conservation status, considering the carbon capture and storage capacity, as well as its economic value and loss. This research obtained an arboreal carbon storage value of US$4,431,826.7; with losses for the period 1980-2015, of US$132,414.3.

Palavras-chave : Carbon sequestration; Tree biomass; Economic valuation; Mangroves and anthropic pressure.

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