气候变化领域集成服务门户(CCPortal): Cenozoic plant diversity in the neotropics

CCPortal

DOI	10.1126/science.1121380
	Cenozoic plant diversity in the neotropics
	Jaramillo C.; Rueda M.J.; Mora G.
发表日期	2006
ISSN	0036-8075
起始页码	1893
结束页码	1896
卷号	311 期号:5769
英文摘要	Several mechanisms have been proposed to explain the high levels of plant diversity in the Neotropics today, but little is known about diversification patterns of Neotropical floras through geological time. Here, we present the longest time series compiled for palynological plant diversity of the Neotropics (15 stratigraphic sections, 1530 samples, 1411 morphospecies, and 287,736 occurrences) from the Paleocene to the early Miocene (65 to 20 million years ago) in central Colombia and western Venezuela. The record shows a low-diversity Paleocene flora, a significantly more diverse early to middle Eocene flora exceeding Holocene levels, and a decline in diversity at the end of the Eocene and early Oligocene. A good correlation between diversity fluctuations and changes in global temperature was found, suggesting that tropical climate change may be directly driving the observed diversity pattern. Alternatively, the good correspondence may result from the control that climate exerts on the area available for tropical plants to grow.
英文关键词	Climate change; Geographical regions; Geology; Oligomers; Thermal effects; Cenozoic; Geological time; Miocene; Neotropics; Paleocene; Biodiversity; Cenozoic; Neotropical region; paleobotany; paleoclimate; palynology; species diversity; article; biodiversity; Cenozoic; climate change; control system; Eocene; flora; Holocene; Neotropics; Paleocene; palynology; priority journal; tropic climate; Biodiversity; Colombia; Ecosystem; Geologic Sediments; History, Ancient; Plants; Pollen; Spores; Temperature; Time; Tropical Climate; Colombia; South America; Venezuela
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244149
作者单位	Center for Tropical Paleoecology and Archeology, Smithsonian Tropical Research Institute, Army Post Office AA 34002-0948, United States; Paleoflora-Colombian Petroleum Institute, Kilometer 7 via Piedecuesta, Bucaramanga, Colombia; Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA 50011, United States
推荐引用方式 GB/T 7714	Jaramillo C.,Rueda M.J.,Mora G.. Cenozoic plant diversity in the neotropics[J],2006,311(5769).
APA	Jaramillo C.,Rueda M.J.,&Mora G..(2006).Cenozoic plant diversity in the neotropics.Science,311(5769).
MLA	Jaramillo C.,et al."Cenozoic plant diversity in the neotropics".Science 311.5769(2006).