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Can plants keep up with fire regime changes through evolution?
Luke T Kelly1, Ary A Hoffmann2, Craig R Nitschke3
1School of Agriculture, Food and Ecosystem Sciences, The University of Melbourne, Parkville, VIC 3010, Australia.
None:
Patterns of fire are rapidly changing across the globe and causing mismatches between plants and their environment. These mismatches have ecological and evolutionary consequences, but the latter are often overlooked. A critical question is whether plant populations can evolve quickly enough to keep up with changing fire regimes. Fire-related traits, such as canopy seed storage with fire-stimulated seed release, vary within species and can enhance fitness and be heritable - the preconditions for adaptive evolution. Here, we develop a framework that recognizes mismatches between traits and fire based on variation within and among conspecific populations and that opens new ways of forecasting environmental changes and conserving plants. Advances in genomics enable evolutionary potential to be estimated even in wild, long-lived plants.
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