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

doi:10.1126/science.abf1969

GSTDTAP > 气候变化

DOI	10.1126/science.abf1969
	Extinction at the end-Cretaceous and the origin of modern Neotropical rainforests
	Mónica R. Carvalho; Carlos Jaramillo; Felipe de la Parra; Dayenari Caballero-Rodríguez; Fabiany Herrera; Scott Wing; Benjamin L. Turner; Carlos D’Apolito; Millerlandy Romero-Báez; Paula Narváez; Camila Martínez; Mauricio Gutierrez; Conrad Labandeira; German Bayona; Milton Rueda; Manuel Paez-Reyes; Dairon Cárdenas; Álvaro Duque; James L. Crowley; Carlos Santos; Daniele Silvestro
	2021-04-02
发表期刊	Science
出版年	2021
英文摘要	The origin of modern rainforests can be traced to the aftermath of the bolide impact at the end of the Cretaceous. Carvalho et al. used fossilized pollen and leaves to characterize the changes that took place in northern South American forests at this time (see the Perspective by Jacobs and Currano). They not only found changes in species composition but were also able to infer changes in forest structure. Extinctions were widespread, especially among gymnosperms. Angiosperm taxa came to dominate the forests over the 6 million years of recovery, when the flora began to resemble that of modern lowland neotropical forest. The leaf data also imply that the forest canopy evolved from relatively open to closed and layered, leading to increased vertical stratification and a greater diversity of plant growth forms. Science , this issue p. [63][1]; see also p. [28][2] 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. [1]: /lookup/doi/10.1126/science.abf1969 [2]: /lookup/doi/10.1126/science.abh2086
领域	气候变化 ; 资源环境
URL	查看原文
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/321135
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Mónica R. Carvalho,Carlos Jaramillo,Felipe de la Parra,et al. Extinction at the end-Cretaceous and the origin of modern Neotropical rainforests[J]. Science,2021.
APA	Mónica R. Carvalho.,Carlos Jaramillo.,Felipe de la Parra.,Dayenari Caballero-Rodríguez.,Fabiany Herrera.,...&Daniele Silvestro.(2021).Extinction at the end-Cretaceous and the origin of modern Neotropical rainforests.Science.
MLA	Mónica R. Carvalho,et al."Extinction at the end-Cretaceous and the origin of modern Neotropical rainforests".Science (2021).