Evidence map›Paper›PMID 34757780›Full record

ArticleScience advances2021

Loss of functional diversity through anthropogenic extinctions of island birds is not offset by biotic invasions.

Ferran Sayol, Robert S C Cooke, Alex L Pigot, Tim M Blackburn, Joseph A Tobias, Manuel J Steinbauer, Alexandre Antonelli, Søren Faurby

Abstract read
In one paragraph

Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Species introductions shift seed dispersal potential more than extinctions across 120 island plant-frugivore communities.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Review
  8. Article
  9. Conservation priorities for functionally unique and specialized terrestrial vertebrates threatened by biological invasions.Conservation biology : the journal of the Society for Conservation Biology · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. 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

8 authors.

Ferran SayolCentre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, UK.ORCID 0000-0003-3540-7487
Robert S C CookeDepartment of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.ORCID 0000-0003-0601-8888
Alex L PigotCentre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, UK.
Tim M BlackburnCentre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, UK.ORCID 0000-0003-0152-2663
Joseph A TobiasDepartment of Life Sciences, Imperial College London Silwood Park, Ascot, UK.ORCID 0000-0003-2429-6179
Manuel J SteinbauerUniversity of Bayreuth, Bayreuth Center of Ecology and Environmental Research and Sport Ecology, Department of Sport Science, Bayreuth, Germany.ORCID 0000-0002-7142-9272
Alexandre AntonelliDepartment of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.ORCID 0000-0003-1842-9297
Søren FaurbyDepartment of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.ORCID 0000-0002-2974-2628

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human impacts reshape ecological communities through the extinction and introduction of species. The combined impact of these factors depends on whether non-native species fill the functional roles of extinct species, thus buffering the loss of functional diversity. This question has been difficult to address, because comprehensive information about past extinctions and their traits is generally lacking. We combine detailed information about extinct, extant, and established alien birds to quantify historical changes in functional diversity across nine oceanic archipelagos. We found that alien species often equal or exceed the number of anthropogenic extinctions yet apparently perform a narrower set of functional roles as current island assemblages have undergone a substantial and ubiquitous net loss in functional diversity and increased functional similarity among assemblages. Our results reveal that the introduction of alien species has not prevented anthropogenic extinctions from reducing and homogenizing the functional diversity of native bird assemblages on oceanic archipelagos.

Identifiers

PMID34757780
PMCPMC8580305

What OpenQuestion holds

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Registered trials

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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.