气候变化领域集成服务门户(CCPortal): Late Quaternary environments on the far southwestern edge of Beringia

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DOI	10.1016/j.quascirev.2018.11.006
	Late Quaternary environments on the far southwestern edge of Beringia
	Lozhkin A.V.; Anderson P.M.; Glushkova O.Y.; Vazhenina L.N.
发表日期	2019
ISSN	0277-3791
起始页码	21
结束页码	37
卷号	203
英文摘要	Palynological and plant macrofossil data and remains of Mammuthus primigenius from the Tanon quarry (59° 40′ N, 151° 12′ E) provide much needed information about environments in southwestern Beringia during the Middle Holocene and marine isotope stages (MIS) 2 and 3. During the Middle Holocene, Larix-Betula forest characterized the Tanon region and differed from the Larix forests of interior Western Beringia. Betula platyphylla, which today is more common in moderate regions of the Far East, was an important component of the coastal forest near the quarry and possibly was more extensive in the coastal lowland. Ecological and quantitative models suggest that the coastal region experienced longer growing seasons and warmer summer temperatures, which could support the expansion of tree Betula. The MIS 2 palynological assemblage from Tanon indicates a prevalence of mesic and xeric herb-dominated tundra. However, the macrofossil data consist largely of taxa found in forest or forest-tundra with only a minor contribution by steppe species. The Tanon results agree with the larger paleovegetation database from Beringia, which suggests that steppe was not widespread during the Late Pleistocene but rather the landscape was characterized by a mosaic of tundra types. The Tanon site provides the first information about MIS 3 coastal vegetation, indicating the presence of Larix-Betula forest within valleys and shrub tundra at higher elevations. The discovery of Mammuthus primigenius in the quarry marks the southernmost population of Late Pleistocene mammoths in Western Beringia. © 2018
英文关键词	Beringia; Late Pleistocene; Middle Holocene; Paleogeography; Vegetation dynamics
语种	英语
scopus关键词	Glacial geology; Landforms; Quarries; Vegetation; Beringia; Holocenes; Late Pleistocene; Paleogeography; Vegetation dynamics; Forestry; Beringia; deciduous tree; elephant; Holocene; marine isotope stage; paleoenvironment; paleogeography; palynology; Pleistocene; Quaternary; skeletal remains; vegetation dynamics; Far East; Betula; Betula platyphylla; Larix; Mammuthus primigenius
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152080
作者单位	North East Interdisciplinary Science Research Institute N.A. Shilo, Far East Branch, Russian Academy of Sciences, 16 Portovaya St., Magadan, 685000, Russian Federation; Earth & Space Sciences and Quaternary Research Center, University of Washington, Seattle, WA 98195-1310, United States
推荐引用方式 GB/T 7714	Lozhkin A.V.,Anderson P.M.,Glushkova O.Y.,et al. Late Quaternary environments on the far southwestern edge of Beringia[J],2019,203.
APA	Lozhkin A.V.,Anderson P.M.,Glushkova O.Y.,&Vazhenina L.N..(2019).Late Quaternary environments on the far southwestern edge of Beringia.Quaternary Science Reviews,203.
MLA	Lozhkin A.V.,et al."Late Quaternary environments on the far southwestern edge of Beringia".Quaternary Science Reviews 203(2019).