Evidence map›Paper›PMID 33757358›Full record

ArticleProceedings. Biological sciences2021

Evidence for an Allee effect in a declining fur seal population.

Rebecca Nagel, Claire Stainfield, Cameron Fox-Clarke, Camille Toscani, Jaume Forcada, Joseph I Hoffman

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Declining Abundance and Variable Condition of Fur Seal (Animals : an open access journal from MDPI · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
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  15. 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

6 authors.

Rebecca NagelDepartment of Animal Behaviour, Bielefeld University, 33501 Bielefeld, Germany.
Claire StainfieldBritish Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 OET, UK.
Cameron Fox-ClarkeBritish Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 OET, UK.
Camille ToscaniBritish Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 OET, UK.
Jaume ForcadaBritish Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 OET, UK.
Joseph I HoffmanDepartment of Animal Behaviour, Bielefeld University, 33501 Bielefeld, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Allee effects play an important role in the dynamics of many populations and can increase the risk of local extinction. However, some authors have questioned the weight of evidence for Allee effects in wild populations. We therefore exploited a natural experiment provided by two adjacent breeding colonies of contrasting density to investigate the potential for Allee effects in an Antarctic fur seal (

Indexed as

Fur SealsAnimalsAntarctic RegionsFemalePopulation DensityPredatory BehaviorSeasonsAllee effectAntarctic fur seal (Arctocephalus gazella)body conditiondensity dependenceoffspring mortalitypinniped

Identifiers

PMID33757358
PMCPMC8059559

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.