Horizon 1 1 5 OS CH : Chapitres d'ouvrages scientifiques Our shared ocean : science in the Global South for a sustainable world Grands Enjeux 112-113 BRESIL GUYANE FRANCAISE INDE 2025 Marseille IRD fdi:010094146 ENG https://www.documentation.ird.fr/hor/fdi:010094146 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2025-07/010094146.pdf Horizon (IRD) Blue carbon refers to the carbon captured and stored by marine and coastal ecosystems. It plays an important role in combating climate change and provides many ecosystem services, but it can also become a pretext for harmful policies. 082ECOSYS ; 021ENVECO