ArticleProceedings. Biological sciences2014
Population size, habitat fragmentation, and the nature of adaptive variation in a stream fish.
Article in Proceedings. Biological sciences, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed.
- Dams and Introduced Species Drive Patterns of Environmental Adaptation in an Iconic but Imperiled Coldwater Fish (Brook Trout,Evolutionary applications · 2026Article
- Gene loss and vesicular transport remodeling underpin heterotrophic adaptations of scleractinian corals.BMC biology · 2026Article
- Genomic-Guided Conservation Actions to Restore the Most Endangered Conifer in the Mediterranean Basin.Molecular ecology · 2025Article
- Habitat Specialisation Impacts Clownfish Demographic Resilience to Pleistocene Sea-Level Fluctuations.Molecular ecology · 2025Article
- A new genomic resource to enable standardized surveys of SNPs across the native range of brook trout (Salvelinus fontinalis).Molecular ecology resources · 2025Article
- Is now the time? Review of genetic rescue as a conservation tool for brook trout.Ecology and evolution · 2023Article
- Asian Swamp eelFrontiers in genetics · 2022Article
- Genome-wide analysis reveals demographic and life-history patterns associated with habitat modification in landlocked, deep-spawning sockeye salmon (Ecology and evolution · 2021Article
- Strong isolation by distance among local populations of an endangered butterfly species (Ecology and evolution · 2021Article
- Varying genetic imprints of road networks and human density in North American mammal populations.Evolutionary applications · 2021Article
- Habitat fragmentation differentially shapes neutral and immune gene variation in a tropical bird species.Heredity · 2021Article
- Small population size and low genomic diversity have no effect on fitness in experimental translocations of a wild fish.Proceedings. Biological sciences · 2019Article
- Impacts of acidification on brown trout Salmo trutta populations and the contribution of stocking to population recovery and genetic diversity.Journal of fish biology · 2019Article
- Population correlates of rapid captive-induced maladaptation in a wild fish.Evolutionary applications · 2019Article
- Evaluating the potential for prezygotic isolation and hybridization between landlocked and anadromous alewife (Evolutionary applications · 2018Article
- Contrasting genetic metrics and patterns among naturalized rainbow trout (Ecology and evolution · 2018Article
- The evolutionary consequences of habitat fragmentation: Body morphology and coloration differentiation among brook trout populations of varying size.Ecology and evolution · 2017Article
- Are heritability and selection related to population size in nature? Meta-analysis and conservation implications.Evolutionary applications · 2016Review
- High genetic diversity of common toad (Bufo bufo) populations under strong natural fragmentation on a Northern archipelago.Ecology and evolution · 2016Article
- Limited variability in upper thermal tolerance among pure and hybrid populations of a cold-water fish.Conservation physiology · 2016Article
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4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Whether and how habitat fragmentation and population size jointly affect adaptive genetic variation and adaptive population differentiation are largely unexplored. Owing to pronounced genetic drift, small, fragmented populations are thought to exhibit reduced adaptive genetic variation relative to large populations. Yet fragmentation is known to increase variability within and among habitats as population size decreases. Such variability might instead favour the maintenance of adaptive polymorphisms and/or generate more variability in adaptive differentiation at smaller population size. We investigated these alternative hypotheses by analysing coding-gene, single-nucleotide polymorphisms associated with different biological functions in fragmented brook trout populations of variable sizes. Putative adaptive differentiation was greater between small and large populations or among small populations than among large populations. These trends were stronger for genetic population size measures than demographic ones and were present despite pronounced drift in small populations. Our results suggest that fragmentation affects natural selection and that the changes elicited in the adaptive genetic composition and differentiation of fragmented populations vary with population size. By generating more variable evolutionary responses, the alteration of selective pressures during habitat fragmentation may affect future population persistence independently of, and perhaps long before, the effects of demographic and genetic stochasticity are manifest.
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