Greenhouse gas emissions from African lakes are no longer a blind spot

Alberto V. Borges, Loris Deirmendjian, Steven Bouillon, William Okello, Thibault Lambert, Fleur A.E. Roland, Vao F. Razanamahandry, Ny Riavo G. Voarintsoa, Ismael A. Kimirei, George H. Allen, Cédric Morana

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

Natural lakes are thought to be globally important sources of greenhouse gases (CO2, CH4, and N2O) to the atmosphere although nearly no data have been previously reported from Africa. We collected CO2, CH4, and N2O data in 24 African lakes that accounted for 49% of total lacustrine surface area of the African continent and covered a wide range of morphology and productivity. The surface water concentrations of dissolved CO2 were much lower than values attributed in current literature to tropical lakes and lower than in boreal systems because of a higher productivity. In contrast, surface water–dissolved CH4 concentrations were generally higher than in boreal systems. The lowest CO2 and the highest CH4 concentrations were observed in the more shallow and productive lakes. Emissions of CO2 may likely have been substantially overestimated by a factor between 9 and 18 in African lakes and between 6 and 26 in pan-tropical lakes.

langue originaleAnglais
Numéro d'articleeabi8716
journalScience Advances
Volume8
Numéro de publication25
Les DOIs
Etat de la publicationPublié - juin 2022
Modification externeOui

Empreinte digitale

Examiner les sujets de recherche de « Greenhouse gas emissions from African lakes are no longer a blind spot ». Ensemble, ils forment une empreinte digitale unique.

Contient cette citation