ArticleProceedings. Biological sciences2022
Surviving environmental change: when increasing population size can increase extinction risk.
Article in Proceedings. Biological sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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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.
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Who cites it
6 citing papers in PubMed.
- The role of environmental stress in promoting mutators through evolutionary rescue: quantitative predictions.Genetics · 2025Article
- Article
- A lack of genetic diversity and minimal adaptive evolutionary divergence in introduced Mysis shrimp after 50 years.Evolutionary applications · 2024Article
- How density dependence, genetic erosion and the extinction vortex impact evolutionary rescue.Proceedings. Biological sciences · 2023Article
- Evolutionary rescue on genotypic fitness landscapes.Journal of the Royal Society, Interface · 2023Article
- Surviving environmental change: when increasing population size can increase extinction risk.Proceedings. Biological sciences · 2022Article
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Populations threatened by an abrupt environmental change-due to rapid climate change, pathogens or invasive competitors-may survive if they possess or generate genetic combinations adapted to the novel, challenging condition. If these genotypes are initially rare or non-existent, the emergence of lineages that allow a declining population to survive is known as 'evolutionary rescue'. By contrast, the genotypes required for survival could, by chance, be common before the environmental change. Here, considering both of these possibilities, we find that the risk of extinction can be lower in very small or very large populations, but peaks at intermediate population sizes. This pattern occurs when the survival genotype has a small deleterious effect before the environmental change. Since mildly deleterious mutations constitute a large fraction of empirically measured fitness effects, we suggest that this unexpected result-an intermediate size that puts a population at a greater risk of extinction-may not be unusual in the face of environmental change.
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