ArticleEvolution letters2023
Pleistocene glaciations caused the latitudinal gradient of within-species genetic diversity.
Article in Evolution letters, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 36 citations in OpenAlex.
- Quaternary Climatic Changes and Biogeographic Barriers Drove Codiversification in the Obligate Mutualism BetweenEcology and evolution · 2026Article
- Genetic Diversity Impacts Climate-Induced Species Range Shifts.Ecology letters · 2026Review
- Pleistocene demographic histories dominate contemporary genomic diversity in a continental radiation of Himalayan-Hengduan songbirds.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Everchanging range: how the changing environment has influenced the genetic diversity and differentiation of an iconic North American palm species.Annals of botany · 2025Article
- Sex-biased Migration and Demographic History of the Big European Firefly Lampyris noctiluca.Molecular biology and evolution · 2025Article
- Long-distance seasonal migration to the tropics promotes genetic diversity but not gene flow in boreal birds.Nature ecology & evolution · 2025Article
- Macrogenetics Approach Reveals Spatial Trends and Drivers of Mitochondrial Genetic Diversity at Different Biological Organization Levels in Tropical Western Atlantic Decapods.Ecology and evolution · 2025Article
- Integrative Analysis ofEcology and evolution · 2025Article
- A renewed glance at the Palearctic golden eagle: Genetic variation in space and time.Ecology and evolution · 2024Article
- Predicting genetic biodiversity in salamanders using geographic, climatic, and life history traits.PloS one · 2024Article
- Biocultural diversity and crop improvement.Emerging topics in life sciences · 2023Review
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Intraspecific genetic diversity is a key aspect of biodiversity. Quaternary climatic change and glaciation influenced intraspecific genetic diversity by promoting range shifts and population size change. However, the extent to which glaciation affected genetic diversity on a global scale is not well established. Here we quantify nucleotide diversity, a common metric of intraspecific genetic diversity, in more than 38,000 plant and animal species using georeferenced DNA sequences from millions of samples. Results demonstrate that tropical species contain significantly more intraspecific genetic diversity than nontropical species. To explore potential evolutionary processes that may have contributed to this pattern, we calculated summary statistics that measure population demographic change and detected significant correlations between these statistics and latitude. We find that nontropical species are more likely to deviate from neutral expectations, indicating that they have historically experienced dramatic fluctuations in population size likely associated with Pleistocene glacial cycles. By analyzing the most comprehensive data set to date, our results imply that Quaternary climate perturbations may be more important as a process driving the latitudinal gradient in species richness than previously appreciated.
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