Abstract:
:The frequency and magnitude of extreme climate events are increasing with global change, yet we lack predictions and empirical evidence for the ability of wild populations to persist and adapt in response to these events. Here, we used Fisher's Fundamental Theorem of Natural Selection to evaluate the adaptive potential of Lasthenia fremontii, a herbaceous winter annual that is endemic to seasonally flooded wetlands in California, to alternative flooding regimes that occur during El Niño Southern Oscillation (ENSO) events. The results indicate that populations may exhibit greater adaptive potential in response to dry years than wet years, and that the relative performance of populations will change across climate scenarios. More generally, our findings show that extreme climate events can substantially change the potential for populations to adapt to climate change by modulating the expression of standing genetic variation and mean fitness.
journal_name
Ecol Lettjournal_title
Ecology lettersauthors
Torres-Martínez L,McCarten N,Emery NCdoi
10.1111/ele.13244subject
Has Abstractpub_date
2019-05-01 00:00:00pages
866-874issue
5eissn
1461-023Xissn
1461-0248journal_volume
22pub_type
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