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DOI	10.1073/pnas.96.14.8017
	Diversity of Holocene life forms in fossil glacier ice
	Willerslev E.; Hansen A.J.; Christensen B.; Steffensen J.P.; Arctander P.
发表日期	1999
ISSN	0027-8424
起始页码	8017
结束页码	8021
卷号	96 期号:14
英文摘要	Studies of biotic remains of polar ice caps have been limited to morphological identification of plant pollen and spores. By using sensitive molecular techniques, we now demonstrate a much greater range of detectable organisms; from 2000- and 4000-year-old ice-core samples, we obtained and characterized 120 clones that represent at least 57 distinct taxa and reveal a diversity of fungi, plants, algae, and protists. The organisms derive from distant sources as well as from the local arctic environment. Our results suggest that additional taxa may soon be readily identified, providing a plank for future studies of deep ice cores and yielding valuable information about ancient communities and their change over time.
语种	英语
scopus关键词	cell DNA; age determination; analytic method; animal tissue; article; biodiversity; controlled study; DNA determination; fossil; nonhuman; nucleotide sequence; paleoanthropology; priority journal; sequence analysis; sequence homology; taxonomy
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159211
作者单位	Willerslev, E., Department of Evolutionary Biology, Zoological Institute, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen O, Denmark; Hansen, A.J., Department of Evolutionary Biology, Zoological Institute, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen O, Denmark; Christensen, B., Department of Evolutionary Biology, Zoological Institute, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen O, Denmark; Steffensen, J.P., Department of Evolutionary Biology, Zoological Institute, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen O, Denmark; Arctander, P., Department of Evolutionary Biology, Zoological Institute, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen O, Denmark
推荐引用方式 GB/T 7714	Willerslev E.,Hansen A.J.,Christensen B.,et al. Diversity of Holocene life forms in fossil glacier ice[J],1999,96(14).
APA	Willerslev E.,Hansen A.J.,Christensen B.,Steffensen J.P.,&Arctander P..(1999).Diversity of Holocene life forms in fossil glacier ice.Proceedings of the National Academy of Sciences of the United States of America,96(14).
MLA	Willerslev E.,et al."Diversity of Holocene life forms in fossil glacier ice".Proceedings of the National Academy of Sciences of the United States of America 96.14(1999).