气候变化领域集成服务门户(CCPortal): Indicate sudden loss of late triassic biodiversity in East Greenland

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DOI	10.1126/science.1171706
	Indicate sudden loss of late triassic biodiversity in East Greenland
	McElwain J.C.; Wagner P.J.; Hesselbo S.P.
发表日期	2009
ISSN	0036-8075
起始页码	1554
结束页码	1556
卷号	324 期号:5934
英文摘要	The pace of Late Triassic (LT) biodiversity loss is uncertain, yet it could help to decipher causal mechanisms of mass extinction. We investigated relative abundance distributions (RADs) of six LT plant assemblages from the Kap Stewart Group, East Greenland, to determine the pace of collapse of LT primary productivity. RADs displayed not simply decreases in the number of taxa, but decreases in the number of common taxa. Likelihood tests rejected a hypothesis of continuously declining diversity. Instead, the RAD shift occurred over the upper two-to-four fossil plant assemblages and most likely over the last three (final 13 meters), coinciding with increased atmospheric carbon dioxide concentration and global warming. Thus, although the LT event did not induce mass extinction of plant families, it accompanied major and abrupt change in their ecology and diversity.
英文关键词	carbon dioxide; abundance; biodiversity; carbon dioxide; fossil assemblage; global warming; mass extinction; plant community; population distribution; primary production; Triassic; article; atmosphere; biodiversity; concentration (parameters); fossil plant; greenhouse effect; Greenland; nonhuman; plant community; priority journal; Triassic; biological model; evolution; fossil; genetics; Greenland; plant; species extinction; statistical model; Arctic; East Greenland; Greenland; Biodiversity; Evolution; Extinction, Biological; Fossils; Greenland; Likelihood Functions; Models, Biological; Plants
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/244706
作者单位	UCD School of Biology and Environmental Science, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland; Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Department of Earth Sciences, University of Oxford, Oxford OX1 3PR, United Kingdom
推荐引用方式 GB/T 7714	McElwain J.C.,Wagner P.J.,Hesselbo S.P.. Indicate sudden loss of late triassic biodiversity in East Greenland[J],2009,324(5934).
APA	McElwain J.C.,Wagner P.J.,&Hesselbo S.P..(2009).Indicate sudden loss of late triassic biodiversity in East Greenland.Science,324(5934).
MLA	McElwain J.C.,et al."Indicate sudden loss of late triassic biodiversity in East Greenland".Science 324.5934(2009).