Exchange fluxes of CO₂, CH₄, N₂O and NO between soil and atmosphere along an ecoclimatic gradient in West African savannas: a missing piece for regional budgets
Abstract
This study investigated greenhouse gas (CO₂, CH₄, N₂O) and reactive nitrogen (NO) fluxes at three West African savanna sites: the international research reserve of Lamto (Taabo district, Côte d'Ivoire), the Observatoire de Recherche en Environnement de Nambekaha (OREN) (Korhogo, Côte d'Ivoire), and the Centre de Recherches Zootechniques (Dahra, Senegal). Measurements were carried out during intensive field campaigns conducted in 2024 and 2025, during the wet seasons at the three sites, across tree areas and grassy areas in savannas, and cropland ecosystems subjected to different treatments from March 2023 to September 2025. Overall, soil moisture, vegetation type (grassy areas, trees areas, crops) and site location (Lamto, Dahra, Nambekaha) were the main factors controlling gas fluxes (CO₂, NO and CH₄), whereas treatments containing different ratio of nitrates and ammonium had no significant effect according to the statistical analysis (ANCOVA).
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BibTeX
@misc{zoure2026exchange,
title = {{Exchange fluxes of CO₂, CH₄, N₂O and NO between soil and atmosphere along an ecoclimatic gradient in West African savannas: a missing piece for regional budgets}},
author = {Moussa Zouré and Claire Delon and Adjon Kouassi and Dominique Serça and Corinne Galy-Lacaux and Sébastien Barot and Money Ossohou and Fulgence Koffi and Seydina Mohamad Ba and Adeola Michael Dahunsi and Xavier Le Roux and Silué Siélé and Ousmane Ndiaye and Océane Lenoir and Eric Gardrat and Maria Dias-Alves and Sarah Konaré and Madina Doumbia and Fabien Solmon and Hagninou Elagnon Venance Donnou},
howpublished = {HAL},
year = {2026},
month = jul,
doi = {10.5194/egusphere-2026-3592},
url = {https://hal.science/hal-05764915v1},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Exchange fluxes of CO₂, CH₄, N₂O and NO between soil and atmosphere along an ecoclimatic gradient in West African savannas: a missing piece for regional budgets
AU - Moussa Zouré
AU - Claire Delon
AU - Adjon Kouassi
AU - Dominique Serça
AU - Corinne Galy-Lacaux
AU - Sébastien Barot
AU - Money Ossohou
AU - Fulgence Koffi
AU - Seydina Mohamad Ba
AU - Adeola Michael Dahunsi
AU - Xavier Le Roux
AU - Silué Siélé
AU - Ousmane Ndiaye
AU - Océane Lenoir
AU - Eric Gardrat
AU - Maria Dias-Alves
AU - Sarah Konaré
AU - Madina Doumbia
AU - Fabien Solmon
AU - Hagninou Elagnon Venance Donnou
PY - 2026
DA - 2026/07/06
PB - HAL
DO - 10.5194/egusphere-2026-3592
UR - https://hal.science/hal-05764915v1
AB - This study investigated greenhouse gas (CO₂, CH₄, N₂O) and reactive nitrogen (NO) fluxes at three West African savanna sites: the international research reserve of Lamto (Taabo district, Côte d'Ivoire), the Observatoire de Recherche en Environnement de Nambekaha (OREN) (Korhogo, Côte d'Ivoire), and the Centre de Recherches Zootechniques (Dahra, Senegal). Measurements were carried out during intensive field campaigns conducted in 2024 and 2025, during the wet seasons at the three sites, across tree areas and grassy areas in savannas, and cropland ecosystems subjected to different treatments from March 2023 to September 2025. Overall, soil moisture, vegetation type (grassy areas, trees areas, crops) and site location (Lamto, Dahra, Nambekaha) were the main factors controlling gas fluxes (CO₂, NO and CH₄), whereas treatments containing different ratio of nitrates and ammonium had no significant effect according to the statistical analysis (ANCOVA).
ER -