globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gbi.12087
Scopus记录号: 2-s2.0-84902386501
论文题名:
Ancient DNA sheds new light on the Svalbard foraminiferal fossil record of the last millennium
作者: Pawłowska J.; Lejzerowicz F.; Esling P.; Szczuciński W.; Zajaogonekczkowski M.; Pawlowski J.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2014
卷: 12, 期:4
起始页码: 277
结束页码: 288
语种: 英语
Scopus关键词: DNA ; fjord ; foraminifera ; fossil record ; microfossil ; Pleistocene ; relative abundance ; type specimen ; Arctic ; Hornsund ; Spitsbergen ; Svalbard ; Svalbard and Jan Mayen ; Eukaryota ; Foraminifera ; DNA ; biodiversity ; comparative study ; evaluation study ; foraminifer ; fossil ; genetics ; metagenomics ; Biodiversity ; DNA ; Foraminifera ; Fossils ; Metagenomics
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences ; Environmental Science: General Environmental Science ; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: Recent palaeogenetic studies have demonstrated the occurrence of preserved ancient DNA (aDNA) in various types of fossilised material. Environmental aDNA sequences assigned to modern species have been recovered from marine sediments dating to the Pleistocene. However, the match between the aDNA and the fossil record still needs to be evaluated for the environmental DNA approaches to be fully exploited. Here, we focus on foraminifera in sediments up to one thousand years old retrieved from the Hornsund fjord (Svalbard). We compared the diversity of foraminiferal microfossil assemblages with the diversity of aDNA sequenced from subsurface sediment samples using both cloning and high-throughput sequencing (HTS). Our study shows that 57% of the species archived in the fossil record were also detected in the aDNA data. However, the relative abundance of aDNA sequence reads and fossil specimens differed considerably. We also found a limited match between the stratigraphic occurrence of some fossil species and their aDNA sequences, especially in the case of rare taxa. The aDNA data comprised a high proportion of non-fossilised monothalamous species, which are known to dominate in modern foraminiferal communities of the Svalbard region. Our results confirm the relevance of HTS for studying past micro-eukaryotic diversity and provide insight into its ability to reflect fossil assemblages. Palaeogenetic studies including aDNA analyses of non-fossilised groups expand the range of palaeoceanographical proxies and therefore may increase the accuracy of palaeoenvironmental reconstructions. © 2014 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85195
Appears in Collections:影响、适应和脆弱性

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作者单位: Institute of Oceanology Polish Academy of Sciences, Sopot, Poland; Department of Genetics and Evolution, University of Geneva, Sciences III, Geneva, Switzerland; IRCAM, UMR 9912, Université Pierre et Marie Curie, Paris, France; Institute of Geology, Adam Mickiewicz University in Poznań, Poznań, Poland

Recommended Citation:
Pawłowska J.,Lejzerowicz F.,Esling P.,et al. Ancient DNA sheds new light on the Svalbard foraminiferal fossil record of the last millennium[J]. Geobiology,2014-01-01,12(4)
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