Resumo

VAZQUEZ-BENAVIDES, Judith; ALVARADO-BARRIENTOS, Ma. Susana  e  PINEDA-LOPEZ, María del Rosario. Scientometric review (1990-2022) of the carbon cycle and CO₂ and CH₄ fluxes from mangroves. Madera bosques [online]. 2024, vol.30, n.spe, e3042628.  Epub 11-Nov-2024. ISSN 2448-7597.  https://doi.org/10.21829/myb.2024.3042628.

Mangroves are strategic coastal ecosystems in the face of climate change. However, fundamental knowledge gaps remain, regarding the dynamics of the large carbon reservoir these ecosystems contain. A scientometric analysis of the carbon cycle of mangroves is presented, with special interest in CO2 and CH4 fluxes. The term “blue carbon” is currently distinctive of the reviewed scientific literature, and 380 journals were found to publish studies generally using this keyword. The geography of the reviewed literature shows that most publications reported results of studies with sites located in China (160), followed by Indonesia (128), India (92), Australia (78), and U.S.A. (62). Publications with study sites located in Latin America represent 15% of the reviewed literature (114), were Brazil (52) and Mexico (46) standout. Although publications regarding carbon fluxes increased during the last years, the studies focused on carbon stocks are still the most numerous (68%). More than 70% of the publications regarding carbon fluxes report soil (flooded or not) vertical fluxes (i.e. with the atmosphere), and conserved mangroves are mostly studied. Given the pressing necessity to comprehend the climate change mitigation potential of mangroves, it is important to increase the study of lateral and vertical carbon fluxes, with a multi-scalar approach and in varied coastal contexts, with special attention to mangroves under restoration with different degradation legacies. Focusing on filling these gaps in the written scientific communication is crucial for decision making of mangrove conservation and restoration.

Palavras-chave : climate change; blue carbon; coastal ecosystems; emissions; greenhouse gasses; wetlands.

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