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Diversity of Holocene life forms in fossil glacier ice.

Abstract：

: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.

journal_name

Proc Natl Acad Sci U S A

journal_title

Proceedings of the National Academy of Sciences of the United States of America

authors

Willerslev E,Hansen AJ,Christensen B,Steffensen JP,Arctander P

doi

10.1073/pnas.96.14.8017

keywords:

subject

Has Abstract

pub_date

1999-07-06 00:00:00

pages

8017-21

issue

14

eissn

0027-8424

issn

1091-6490

journal_volume

96

pub_type

杂志文章

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