Evidence map›Paper›PMID 22969411›Full record

ArticlePLoS biology2012

Clade age and species richness are decoupled across the eukaryotic tree of life.

Daniel L Rabosky, Graham J Slater, Michael E Alfaro

Abstract read
In one paragraph

Article in PLoS biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing 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

57 citing papers in PubMed.

  1. Article
  2. Review
  3. The causes of species richness patterns among clades.Proceedings. Biological sciences · 2024
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  6. Review
  7. Article
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  10. The enigmatic tropical alpine flora on the African sky islands is young, disturbed, and unsaturated.Proceedings of the National Academy of Sciences of the United States of America · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors.

Daniel L RaboskyDepartment of Integrative Biology and Museum of Vertebrate Zoology, University of California, Berkeley, California, USA. drabosky@umich.edu
Graham J Slater
Michael E Alfaro

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Explaining the dramatic variation in species richness across the tree of life remains a key challenge in evolutionary biology. At the largest phylogenetic scales, the extreme heterogeneity in species richness observed among different groups of organisms is almost certainly a function of many complex and interdependent factors. However, the most fundamental expectation in macroevolutionary studies is simply that species richness in extant clades should be correlated with clade age: all things being equal, older clades will have had more time for diversity to accumulate than younger clades. Here, we test the relationship between stem clade age and species richness across 1,397 major clades of multicellular eukaryotes that collectively account for more than 1.2 million described species. We find no evidence that clade age predicts species richness at this scale. We demonstrate that this decoupling of age and richness is unlikely to result from variation in net diversification rates among clades. At the largest phylogenetic scales, contemporary patterns of species richness are inconsistent with unbounded diversity increase through time. These results imply that a fundamentally different interpretative paradigm may be needed in the study of phylogenetic diversity patterns in many groups of organisms.

Indexed as

BiodiversityPhylogenyEukaryotaModels, BiologicalSpecies SpecificityTime Factors

Identifiers

PMID22969411
PMCPMC3433737

What OpenQuestion holds

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LicenceCC BY
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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.