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Related Experiment Video

Updated: Mar 10, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

Adaptation to fragmentation: evolutionary dynamics driven by human influences.

Pierre-Olivier Cheptou¹, Anna L Hargreaves², Dries Bonte³

¹CEFE UMR 5175, CNRS, Université de Montpellier, Université Paul-Valery, EPHE - 1919, route de Mende, 34293 Montpellier cedex 05, France pierre-olivier.cheptou@cefe.cnrs.fr.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences

|December 7, 2016

Summary

This summary is machine-generated.

Habitat fragmentation threatens biodiversity by altering populations and genetics. Organisms may adapt to human-caused fragmentation, but this adaptation doesn't always ensure survival and can sometimes worsen negative effects.

Keywords:

anthropogenic fragmentation dispersal evolutionary rescue island biogeography metapopulation short-term adaptation

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Area of Science:

Evolutionary Ecology
Conservation Biology
Biodiversity Science

Background:

Habitat fragmentation, the division of habitats into smaller, isolated patches, is a significant driver of biodiversity loss.
Established consequences include reduced genetic diversity and impaired gene flow between populations.
Fragmentation can also impose novel selection pressures on species' life history traits.

Purpose of the Study:

To review how organisms may adapt to anthropogenic habitat fragmentation.
To explore the potential for evolutionary adaptation in fragmented landscapes.
To assess whether adaptation can mitigate or exacerbate fragmentation's negative impacts.

Main Methods:

Review of existing literature and case studies on adaptation to fragmentation.
Analysis of evolutionary ecology models predicting responses to fragmentation.
Examination of selection pressures at both patch and landscape scales.

Main Results:

Anthropogenic fragmentation can drive adaptive evolution in populations.
Dispersal traits are predicted to face strong selection due to matrix hostility and connectivity needs.
Co-evolution of associated traits is likely, alongside dispersal trait evolution.

Conclusions:

Adaptation to anthropogenic fragmentation is possible but not guaranteed to rescue populations.
Evolutionary adaptation may sometimes intensify negative fragmentation effects, threatening metapopulation viability.
Understanding adaptive potential is crucial for effective conservation in fragmented ecosystems.