The distribution of late-Quaternary woody taxa in northern Eurasia: evidence from a new macrofossil database
The distribution of late-Quaternary woody taxa in northern Eurasia: evidence from a new macrofossil database
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DOI：
10.1016/j.quascirev.2009.04.016
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发表时间：
2009-11-01
影响因子：
4
通讯作者：
Vazhenina, Ludmila
中科院分区：
文献类型：
--
作者：
Binney, Heather A.;Willis, Katherine J.;Vazhenina, Ludmila
我们提供了一个欧亚大陆北方（从23度到180度E和46度到76度N）晚第四纪植物宏体化石记录数据库，包括281个地点，2300多个样本和13,000多个个体记录。样品分别进行放射性碳年代测定，或通过年龄模型指定年龄，该模型与一个部分内校准的放射性碳年代序列相匹配。现代北方森林特有的树种（如云杉、落叶松、树桦）至少在末次盛冰期之前、末次盛冰期和晚冰期至全新世期间间断地被记录下来，一些记录将树木定位在斯堪的纳维亚冰盖的边界附近，这支持了这样一种假设，即在末次冰期循环期间，一些分类群在北方避难所中持续存在。北方的树木在西伯利亚表现出不同的时空模式：落叶树在晚冰期广泛分布，其个体分布在其同时代的大部分范围内，而万年青针叶树在全新世向北扩展到其分布范围的极限。(c)2009爱思唯尔有限公司保留所有权利。
We present a database of late-Quaternary plant macrofossil records for northern Eurasia (from 23 degrees to 180 degrees E and 46 degrees to 76 degrees N) comprising 281 localities, over 2300 samples and over 13,000 individual records. Samples are individually radiocarbon dated or are assigned ages via age models fitted to sequences of calibrated radiocarbon dates within a section. Tree species characteristic of modern northern forests (e.g. Picea, Larix, tree-Betula) are recorded at least intermittently from prior to the last glacial maximum (LGM), through the LGM and Lateglacial, to the Holocene, and some records locate trees close to the limits of the Scandinavian ice sheet, supporting the hypothesis that some taxa persisted in northern refugia during the last glacial cycle. Northern trees show differing spatio-temporal patterns across Siberia: deciduous trees were widespread in the Lateglacial, with individuals occurring across much of their contemporary ranges, while evergreen conifers expanded northwards to their range limits in the Holocene. (c) 2009 Elsevier Ltd. All rights reserved.