DOI: 10.1016/j.quascirev.2014.10.016
Scopus记录号: 2-s2.0-84909606143
论文题名: Late Quaternary vegetation of Chukotka (Northeast Russia), implications for Glacial and Holocene environments of Beringia
作者: Anderson P.M. ; Lozhkin A.V.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 107 起始页码: 112
结束页码: 128
语种: 英语
英文关键词: Beringia
; Chukotka
; Plant macrofossils
; Pollen
; Postglacial thermal maximum
; Vegetation history
Scopus关键词: Plants (botany)
; Vegetation
; Beringia
; Chukotka
; Plant macrofossils
; Pollen
; Thermal maxima
; Vegetation history
; Glacial geology
; fossil record
; glaciation
; Holocene
; paleoclimate
; palynology
; shrub
; spatiotemporal analysis
; vegetation history
; Bering Island
; Chukchi
; Kamchatka
; Komandorski Islands
; Russian Federation
英文摘要: Two lake records from the Kankaren region of southern Chukotka, when combined with other palynological and macrofossil data, document spatial and temporal variations in the regional vegetation history since ~21,00014C/25,400calyrBP. Full-glacial environments were severely cold and arid in central and northern Chukotka, whereas southern sites experienced conditions that were relatively moist, although still drier than present. Southern Chukotka may represent a western extension of environments of the land bridge proper, including a possible "moisture" barrier to intercontinental migration. Shrub Betula tundra established earliest in southern Chukotka (~15,800-14,00014C/19,000-16,700calyrBP; ~13,00014C/15,300calyrBP central and north), Pinus pumila earliest in the north (~960014C/11,100calyrBP; ~760014C/8400calyrBP south), and shrub Alnus earliest in both the south and north (~12,000-11,00014C/13,800-12,900calyrBP). These patterns support the presence of cryptic refugia for Betula and Alnus in Chukotka during the full glaciation. In contrast, P. pumila probably migrated into Chukotka from populations located in the northern coastal lowlands and from mountainous regions of southwestern Beringia. Evidence for a thermal optimum (~11,000-800014C/12,900-9000calyrBP) is strong in northern Chukotka but is absent in central and southern areas. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60078
Appears in Collections: 过去全球变化的重建
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作者单位: Earth and Space Sciences, Quaternary Research Center, University of Washington, Seattle, WA, United States; Northeast Interdisciplinary Science Research Institute, Far East Branch Russian Academy of Sciences, 16 Portovaya Street, Magadan, Russian Federation
Recommended Citation:
Anderson P.M.,Lozhkin A.V.. Late Quaternary vegetation of Chukotka (Northeast Russia), implications for Glacial and Holocene environments of Beringia[J]. Quaternary Science Reviews,2015-01-01,107