Article (Scientific journals)
Vulnerability to Climate Changes of Tropical Forests Across Africa
Madingou, Mady; Dauby, Gilles; Fayolle, Adeline et al.
2025In Diversity and Distributions, 31 (10)
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Keywords :
climate change; exposure; risk assessment; safety margin; tropical moist forest; vulnerability
Abstract :
[en] ABSTRACTAimGlobal climate projections identify tropical regions as hotspots of climate change during the 21st century. The few ground data in tropical Africa confirm significant warming and drying over the last decades, but how plant communities will tolerate these new climate conditions remains vastly uncertain. In this study, we assess the climatic vulnerability of tropical moist forests across Africa.LocationTropical Africa.MethodsWe mapped climate change exposure across the tropical moist forest biome, focusing on mean annual temperature (MAT), mean annual precipitation (MAP) and climatological water deficit (CWD) using climate projections for 2085 from five regional models under RCP4.5 and RCP8.5. Using occurrence records for 3,536 tree and shrub species, we estimated species' climatic limits and safety margins, then averaged these margins at the community level. Finally, we combined exposure and safety margins to assess species‐ and community‐level risk by 2085.ResultsUnder RCP4.5, corresponding to an average warming of 2.4°C by 2085, 92% of species (3,256) could be at risk in at least one community where they occur. This rate increases to 96% (3,405 species) under RCP8.5, with an average warming of 4.3°C. In all scenarios, the most at‐risk communities are concentrated in low‐elevation regions, where species have few opportunities to migrate if their climatic limits are exceeded. The high risk across the forest biome results from the combination of significant and widespread temperature increases and the relatively narrow safety margins of the species. Specifically, 50% of species have an average safety margin below 1.6°C above baseline temperatures, suggesting they are already near their observed climatic limits.Main ConclusionsBeyond refining our understanding of the vulnerability of tropical moist forests across Africa, our results have far‐reaching implications for conservation, allowing us to target species and communities of interest for further monitoring and conservation efforts.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Madingou, Mady  ;  Université de Liège - ULiège > TERRA Research Centre
Dauby, Gilles;  AMAP, Univ Montpellier, IRD, CNRS, INRAE, CIRAD Montpellier France
Fayolle, Adeline  ;  Université de Liège - ULiège > TERRA Research Centre > Gestion des ressources forestières ; UPR Forêts et Sociétés, CIRAD, Campus International de Baillarguet Montpellier Cedex 5 France ; Forêts et Sociétés, CIRAD, Université Montpellier Montpellier France
Gorel, Anaïs‐Pasiphaé;  Forest is Life Gembloux Agro‐Bio Tech, Université de Liège Gembloux Belgium
Language :
English
Title :
Vulnerability to Climate Changes of Tropical Forests Across Africa
Publication date :
October 2025
Journal title :
Diversity and Distributions
ISSN :
1366-9516
eISSN :
1472-4642
Publisher :
Wiley
Volume :
31
Issue :
10
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Funding number :
O.0026.22
Available on ORBi :
since 20 October 2025

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