Evidence map›Paper›PMID 10393940›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1999

Diversity of Holocene life forms in fossil glacier ice.

E Willerslev, A J Hansen, B Christensen, J P Steffensen, P Arctander

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
6.3field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 116 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Ancient and modern environmental DNA.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2015
    Review
  5. Article
  6. Ancient DNA reveals late survival of mammoth and horse in interior Alaska.Proceedings of the National Academy of Sciences of the United States of America · 2009
    Article
  7. Diffusion-controlled metabolism for long-term survival of single isolated microorganisms trapped within ice crystals.Proceedings of the National Academy of Sciences of the United States of America · 2007
    Article
  8. Ancient bacteria show evidence of DNA repair.Proceedings of the National Academy of Sciences of the United States of America · 2007
    Article
  9. Evaluating Neanderthal genetics and phylogeny.Journal of molecular evolution · 2007
    Article
  10. Article
  11. Beringian paleoecology inferred from permafrost-preserved fungal DNA.Applied and environmental microbiology · 2005
    Article
  12. Ancient DNA.Proceedings. Biological sciences · 2005
    Review
  13. Article
  14. Ancient genomes.Genome biology · 2005
    Review
  15. Article
  16. Temperature dependence of metabolic rates for microbial growth, maintenance, and survival.Proceedings of the National Academy of Sciences of the United States of America · 2004
    Article
  17. Article
  18. Article
  19. Article
  20. Otzi's last meals: DNA analysis of the intestinal content of the Neolithic glacier mummy from the Alps.Proceedings of the National Academy of Sciences of the United States of America · 2002
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

E WillerslevDepartment of Evolutionary Biology, Zoological Institute, University of Copenhagen, Universitetsparken 15, DK-2100, Copenhagen O, Denmark.
A J Hansen
B Christensen
J P Steffensen
P Arctander
University of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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.

Indexed as

Evolution, MolecularFossilsGenetic VariationBase SequenceDNA, FungalDNA, RibosomalFungiIceMolecular Sequence DataRNA, Ribosomal, 18SSequence AlignmentSequence Homology, Amino AcidDNA, FungalDNA, RibosomalIceRNA, Ribosomal, 18S

Identifiers

PMID10393940
PMCPMC22180
OpenAlexW2058101978

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.