Estimating the capacity of Chamaecrista fasciculata for adaptation to change in precipitation

Author: Peschel, AR; Boehm, EL; Shaw, RG Description: Adaptation through natural selection may be the only means by which small and fragmented plant populations will persist through present day environmental change. A population’s additive genetic variance for fitness (V(A) (W)) represents its immediate capacity to adapt to the environment in which it exists. We evaluated this property for a population of the annual legume Chamaecrista fasciculata through a quantitative genetic experiment in the tallgrass prairie region of the Midwestern United States, where changing climate is predicted to include more variability…

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Climate change increases risk of extreme rainfall following wildfire in the western United States

Author: Touma, Danielle; Stevenson, Samantha; Swain, Daniel L.; Singh, Deepti; Kalashnikov, Dmitri A.; Huang, Xingying Description: Post-wildfire extreme rainfall events can have destructive impacts in the western United States. Using two climate model large ensembles, we assess the future risk of extreme fire weather events being followed by extreme rainfall in this region. By mid-21st century, in a high warming scenario (RCP8.5), we report large increases in the number of extreme fire weather events followed within 1 year by at least one extreme rainfall event. By 2100, the frequency of…

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