Evidence map›Paper›PMID 23969993›Full record

ArticleScientific reports2013

Increase in penguin populations during the Little Ice Age in the Ross Sea, Antarctica.

Qi-Hou Hu, Li-Guang Sun, Zhou-Qing Xie, Steven D Emslie, Xiao-Dong Liu

Abstract read
In one paragraph

Article in Scientific reports, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
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

6 citing papers in PubMed.

  1. Article
  2. Sea ice concentration decline in an important Adélie penguin molt area.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  3. Article
  4. Review
  5. Article
  6. Ancient population genomics and the study of evolution.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2015
    Review
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.

Qi-Hou HuInstitute of Polar Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China.
Li-Guang Sun
Zhou-Qing Xie
Steven D Emslie
Xiao-Dong Liu

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Penguins are an important seabird species in Antarctica and are sensitive to climate and environmental changes. Previous studies indicated that penguin populations increased when the climate became warmer and decreased when it became colder in the maritime Antarctic. Here we determined organic markers in a sediment profile collected at Cape Bird, Ross Island, high Antarctic, and reconstructed the history of Adélie penguin colonies at this location over the past 700 years. The region transformed from a seal to a penguin habitat when the Little Ice Age (LIA; 1500-1800 AD) began. Penguins then became the dominant species. Penguin populations were the highest during ca. 1490 to 1670 AD, a cold period, which is contrary to previous results in other regions much farther north. Different responses to climate change may occur at low latitudes and high latitudes in the Antarctic, even if for same species.

Indexed as

ClimatePopulation GrowthAnimalsAntarctic RegionsAquatic OrganismsOceans and SeasSpheniscidae

Identifiers

PMID23969993
PMCPMC3749795

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.