气候变化领域集成服务门户(CCPortal): Late Miocene rise and fall of C 4 grasses in the western United States linked to aridification and uplift

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DOI	10.1130/B32009.1
	Late Miocene rise and fall of C 4 grasses in the western United States linked to aridification and uplift
	Hyland E.G.; Sheldon N.D.; Smith S.Y.; Strömberg C.A.E.
发表日期	2019
ISSN	167606
起始页码	224
结束页码	234
卷号	131 期号:2021-01-02
英文摘要	C 4 grasslands are a major global ecosystem with an important role as the primary source of food resources and agricultural land for the planet. Despite this, the causes and timeline of their expansion are still not fully known and appear to be variable in different parts of the world. By combining phytolith and stable isotope methods, we produce robust estimates of late Miocene C 4 vegetation composition and compile a regional vegetation record through time from the late Miocene through present in southwestern Montana (USA). These estimates indicate the fairly rapid rise of C 4 grasses to peak levels during the late Miocene (Hemphillian) and subsequent decline to moderate levels from the Pliocene through Present. This temporal pattern indicates significant interplay between climatic and tectonic drivers, with the late Miocene rise of C 4 grasses triggered by regional aridification, and the return to lower (modern) abundances due to ecosystem restrictions linked to recent regional uplift driven by mantle buoyancy associated with the Yellowstone hotspot. © 2018 Geological Society of America.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184973
作者单位	Department of Earth and Environmental Sciences, University of Michigan, 1100 North University Avenue, Ann Arbor, MI 48109, United States; Department of Biology and Burke Museum of Natural History, University of Washington, Seattle, WA 98195, United States; MEAS, North Carolina State University, United States
推荐引用方式 GB/T 7714	Hyland E.G.,Sheldon N.D.,Smith S.Y.,et al. Late Miocene rise and fall of C 4 grasses in the western United States linked to aridification and uplift[J],2019,131(2021-01-02).
APA	Hyland E.G.,Sheldon N.D.,Smith S.Y.,&Strömberg C.A.E..(2019).Late Miocene rise and fall of C 4 grasses in the western United States linked to aridification and uplift.Bulletin of the Geological Society of America,131(2021-01-02).
MLA	Hyland E.G.,et al."Late Miocene rise and fall of C 4 grasses in the western United States linked to aridification and uplift".Bulletin of the Geological Society of America 131.2021-01-02(2019).