Affiliation:
1. Department Genetics University of Georgia Athens GA 30602 USA
2. Odum School of Ecology University of Georgia Athens GA 30602 USA
Abstract
SummaryModern reliance on fossil fuels has ushered in extreme temperatures globally and abnormal precipitation patterns in many regions. Although the climate is changing rapidly, other agents of natural selection such as photoperiod remain constant. This decoupling of previously reliable environmental cues shifts adaptive landscapes, favors novel suites of traits and likely increases the extinction risk of local populations. Here, I examine the fitness consequences of changing climates. Meta‐analyses demonstrate that simulated future climates depress viability and fecundity components of fitness for native plant species in the short term, which could reduce population growth rates. Contracting populations that cannot adapt or adjust plastically to new climates might not be capable of producing sufficient migrants to track changing conditions.
Contents
Summary
81
I.
Introduction
81
II.
Fitness landscapes
82
III.
Recommendations for future studies
84
IV.
Evolutionary consequences
84
V.
Conclusions
85
Acknowledgements
85
References
85
Cited by
131 articles.
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