Data from: Asymmetric competition impacts evolutionary rescue in a changing environment

How interspecific competition influences evolution in response to abiotic change is key to predicting the impact of climate change. Previous work has shown that, when two species compete for a directionally shifting resource abundance distribution in time, the species lagging behind the resource peak is the first to go extinct due to competitive exclusion. However, this work assumed symmetrically distributed resources and competition. Asymmetries can generate differences between species in population sizes, genetic variation, and trait means. We show that asymmetric resource availability or competition can facilitate coexistence and even occasionally cause the leading species to go extinct first. Surprisingly, we also find cases where traits evolve in the opposite direction to the changing environment because of a "vacuum of competitive release'' created when the lagging species declines in number. Thus, the species exhibiting the slowest rate of trait evolution is not always the most likely to go extinct in a changing environment.