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ALADYN - a spatially explicit, allelic model for simulating adaptive dynamics.

Katja H Schiffers1, Justin Mj Travis2

  • 1Katja H Schiffers ( katja.schiffers@gmail.com ), Evolution, Modeling and Analysis of BIOdiversity group, Laboratoire d'Ecologie Alpine, UMR CNRS 5553, Université Joseph Fourier, Grenoble Cedex 9, France.

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Summary

ALADYN models population dynamics, linking juvenile survival to environmental matching. This framework aids in understanding adaptation and range shifts in changing environments.

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Computational Biology

Background:

  • Investigating adaptive processes in spatially-structured populations requires sophisticated modeling tools.
  • Understanding the interplay between demography, genetics, and spatial dynamics is crucial for predicting species' responses to environmental change.

Purpose of the Study:

  • To introduce ALADYN, a novel C++ modeling framework for simulating joint allelic and demographic dynamics in spatially-structured populations.
  • To provide a flexible platform for exploring adaptive evolution under changing environmental conditions and its impact on niche and range dynamics.

Main Methods:

  • ALADYN employs stochastic simulation to model populations with continuous individual locations in explicit landscapes.
  • It links juvenile survival to phenotypic matching with local optima, allowing flexible demographic and genetic architecture specifications.

Main Results:

  • ALADYN enables the investigation of adaptive processes in response to spatial and temporal environmental changes.
  • The framework uniquely integrates continuous spatial resolution with selection patterns.

Conclusions:

  • ALADYN is a powerful, freely available tool for ecological and evolutionary research.
  • It facilitates the study of adaptation, niche evolution, and range dynamics in a spatially explicit manner.