ArticleEvolutionary applications2014
Joint effects of population size and isolation on genetic erosion in fragmented populations: finding fragmentation thresholds for management.
Article in Evolutionary applications, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed.
- Singing and Calling Behavior of a Threatened Passerine With Spatially Variable Vocalizations: Individual, Population and Geographic Patterns.Ecology and evolution · 2026Article
- Airports for the genetic rescue of a former agricultural pest.Scientific reports · 2024Article
- Landscape features influencing gene flow and connectivity of an endangered passerine.Ecology and evolution · 2024Article
- Facial asymmetry tracks genetic diversity amongProceedings. Biological sciences · 2022Article
- Population viability analysis of the endangered Dupont's Lark Chersophilus duponti in Spain.Scientific reports · 2021Article
- Global Commitments to Conserving and Monitoring Genetic Diversity Are Now Necessary and Feasible.Bioscience · 2021Article
- Fine-scale genetic structure in the critically endangered red-fronted macaw in the absence of geographic and ecological barriers.Scientific reports · 2021Article
- Article
- Hierarchical habitat-use by an endangered steppe bird in fragmented landscapes is associated with large connected patches and high food availability.Scientific reports · 2019Article
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- The relative contribution of natural landscapes and human-mediated factors on the connectivity of a noxious invasive weed.Heredity · 2019Article
- Quantifying functional connectivity: The role of breeding habitat, abundance, and landscape features on range-wide gene flow in sage-grouse.Evolutionary applications · 2018Article
- Genetic diversity and structure of an endangered medicinal herb: implications for conservation.AoB PLANTS · 2018Article
- Spatiotemporal Dynamics of Genetic Variation in the Iberian Lynx along Its Path to Extinction Reconstructed with Ancient DNA.Molecular biology and evolution · 2017Article
- Evaluating the influence of life-history characteristics on genetic structure: a comparison of small mammals inhabiting complex agricultural landscapes.Ecology and evolution · 2016Article
- Consequences of extensive habitat fragmentation in landscape-level patterns of genetic diversity and structure in the Mediterranean esparto grasshopper.Evolutionary applications · 2015Article
- Habitat corridors facilitate genetic resilience irrespective of species dispersal abilities or population sizes.Evolutionary applications · 2015Article
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4 authors.
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Abstract
Size and isolation of local populations are main parameters of interest when assessing the genetic consequences of habitat fragmentation. However, their relative influence on the genetic erosion of local populations remains unclear. In this study, we first analysed how size and isolation of habitat patches influence the genetic variation of local populations of the Dupont's lark (Chersophilus duponti), an endangered songbird. An information-theoretic approach to model selection allowed us to address the importance of interactions between habitat variables, an aspect seldom considered in fragmentation studies, but which explained up to 65% of the variance in genetic parameters. Genetic diversity and inbreeding were influenced by the size of local populations depending on their degree of isolation, and genetic differentiation was positively related to isolation. We then identified a minimum local population of 19 male territories and a maximum distance of 30 km to the nearest population as thresholds from which genetic erosion becomes apparent. Our results alert on possibly misleading conclusions and suboptimal management recommendations when only additive effects are taken into account and encourage the use of most explanatory but easy-to-measure variables for the evaluation of genetic risks in conservation programmes.
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