Article Dans Une Revue Marine Pollution Bulletin Année : 2025

Blue carbon stock in Tunisian coastal sediments: First assessment and implications for ecosystem conservation and climate change mitigation

Résumé

This work presents the first comprehensive study on carbon definitive sequestration in coastal marine sediments in Tunisia. It study aimed to provide insights into the potential role of coastal Tunisian sediments in mitigating carbon dioxide (CO2) emissions and climate change. It compiles carbon data from 32 cores sampled in eight distinct ecosystems along the Tunisian coast, including lagoons (Ghar El Melh, Bizerte and Korba), Lake Ichkeul, seagrass meadows (Posidonia oceanica) in Sidi Rais and Monastir bays along with two gulfs (Tunis and Gabes). The study revealed carbon sequestration rates ranging from 2.1 to 177.6 gC m- 2 yr- 1, with the highest rates found in P. oceanica meadows while both lagoons seemed recalcitrant to sequestration due to enhanced organic matter degradation. Conversely, Lake Ichkeul, constitutes a good trap with carbon sequestration rate up to 49 gC

Dates et versions

hal-05060960 , version 1 (08-05-2025)

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Walid Oueslati, Asma Jlassi, Haifa Ben Mna, Valérie Mesnage, Raja Rahmouni, et al.. Blue carbon stock in Tunisian coastal sediments: First assessment and implications for ecosystem conservation and climate change mitigation. Marine Pollution Bulletin, 2025, 215, ⟨10.1016/j.marpolbul.2025.117909⟩. ⟨hal-05060960⟩
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