Evidence map›Paper›PMID 28983517›Full record

ArticleNature ecology & evolution2017

Competing species leave many potential niches unfilled.

Ben Ashby, Eleanor Watkins, José Lourenço, Sunetra Gupta, Kevin R Foster

Abstract read
In one paragraph

Article in Nature ecology & evolution, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

21 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Helping niches may trigger the development of task specialization and division of labour.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. Rapid Adaptation ofPlants (Basel, Switzerland) · 2023
    Article
  9. Article
  10. Antigenic evolution of SARS-CoV-2 in immunocompromised hosts.Evolution, medicine, and public health · 2023
    Article
  11. Article
  12. Eco-Evolutionary Dynamics in Microbial Communities from Spontaneous Fermented Foods.International journal of environmental research and public health · 2021
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Ben AshbyDepartment of Mathematical Sciences, University of Bath, Bath, BA2 7AY, UK.ORCID http://orcid.org/0000-0001-5588-7081
Eleanor WatkinsDepartment of Zoology, University of Oxford, Oxford, OX1 3PS, UK.
José LourençoDepartment of Zoology, University of Oxford, Oxford, OX1 3PS, UK.ORCID http://orcid.org/0000-0002-9318-2581
Sunetra GuptaDepartment of Zoology, University of Oxford, Oxford, OX1 3PS, UK. sunetra.gupta@zoo.ox.ac.uk.
Kevin R FosterDepartment of Zoology, University of Oxford, Oxford, OX1 3PS, UK. kevin.foster@zoo.ox.ac.uk.ORCID http://orcid.org/0000-0003-4687-6633

Funding

European Research Council 242670European Research Council 268904
6 · The paper itself

Abstract

A cornerstone of biology is that coexisting species evolve to occupy separate ecological niches. Classical theory predicts that interspecific competition should lead to all potential niches being occupied, yet observational data suggest that many niches are unfilled. Here we show that theory can be reconciled with observational data by reconceptualising competition in the Hutchinsonian niche space to distinguish between substitutable and non-substitutable resources. When resources are substitutable (e.g. seeds of different size), the components of competition along the niche axes combine multiplicatively, leading to a densely packed niche space. However, when resources are non-substitutable (e.g. seeds and nest sites), we show that the components of competition combine additively. Disruptive selection therefore limits niche overlap between non-substitutable niche axes, leaving most potential niches unfilled. A key corollary is that increasing the number of niche axes may greatly increase the number of potential niches but does not necessarily increase diversity. We discuss observational data that are consistent with our model and consider implications for systems with invasive species. Our work reinforces the power of competition to drive major ecological patterns: while niche space informs on species that might exist, only a small and potentially arbitrary subset will coexist in sympatry.

Indexed as

Biological EvolutionEcosystemModels, BiologicalIntroduced SpeciesPopulation DynamicsSympatry

Identifiers

PMID28983517
PMCPMC5624504

What OpenQuestion holds

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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.