Article Dans Une Revue Science Année : 2021

Extinction at the end-Cretaceous and the origin of modern Neotropical rainforests

Mónica Carvalho
Felipe de la Parra
Dayenari Caballero-Rodríguez
Fabiany Herrera
Scott Wing
Benjamin Turner
Carlos D’apolito
Millerlandy Romero-Báez
Paula Narváez
Camila Martínez
Mauricio Gutierrez
Conrad Labandeira
German Bayona
Milton Rueda
Manuel Paez-Reyes
Dairon Cárdenas
  • Fonction : Auteur
Álvaro Duque
James Crowley
  • Fonction : Auteur
Carlos Santos
  • Fonction : Auteur
Daniele Silvestro
  • Fonction : Auteur

Résumé

The end-Cretaceous event was catastrophic for terrestrial communities worldwide, yet its long-lasting effect on tropical forests remains largely unknown. We quantified plant extinction and ecological change in tropical forests resulting from the end-Cretaceous event using fossil pollen (>50,000 occurrences) and leaves (>6000 specimens) from localities in Colombia. Late Cretaceous (Maastrichtian) rainforests were characterized by an open canopy and diverse plant–insect interactions. Plant diversity declined by 45% at the Cretaceous–Paleogene boundary and did not recover for ~6 million years. Paleocene forests resembled modern Neotropical rainforests, with a closed canopy and multistratal structure dominated by angiosperms. The end-Cretaceous event triggered a long interval of low plant diversity in the Neotropics and the evolutionary assembly of today’s most diverse terrestrial ecosystem.
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Dates et versions

hal-04903952 , version 1 (21-01-2025)

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Citer

Mónica Carvalho, Carlos Jaramillo, Felipe de la Parra, Dayenari Caballero-Rodríguez, Fabiany Herrera, et al.. Extinction at the end-Cretaceous and the origin of modern Neotropical rainforests. Science, 2021, 372 (6537), pp.63-68. ⟨10.1126/science.abf1969⟩. ⟨hal-04903952⟩
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