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Article Dans Une Revue Science Année : 2019

A 90,000-year record of Afromontane forest responses to climate change

Résumé

Pollen records from African highlands are scarce; hence, the paleoecology of the Afromontane forest and its responses to glacial cycles are poorly known. Lake Bambili (Cameroon) provides a record of vegetation changes in the tropical mountains of Africa over the past 90,000 years, with high temporal resolution. Pollen data and biome reconstructions show a diverging response of forests to climate changes; the upper tree line was extremely unstable, shifting substantially in response to glacial-interglacial climate alternation, whereas the transition between the montane and lowland forests remained remarkably stable. Such ecological instability may have had a critical influence on species richness in the Afromontane forests.
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Dates et versions

hal-01990873 , version 1 (27-04-2020)

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Anne-Marie Lézine, Kenji Izumi, Masa Kageyama, Gaston Achoundong. A 90,000-year record of Afromontane forest responses to climate change. Science, 2019, 363 (6423), pp.177-181. ⟨10.1126/science.aav6821⟩. ⟨hal-01990873⟩
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