Discussion
Environmental changes can affect the distribution, abundance, and allele frequency distributions of natural populations (Foden et al., 2019; Román-Palacios & Wiens, 2020; Aguirre-Liguori et al., 2021) by modulating the quantity and quality of available habitats. Organismal response will depend on intrinsic characteristics, which determine whether species persist in a location, shift their distribution and track suitable conditions, or evolve to expand their niches. In this study, we assessed how different taxa on a climatically heterogeneous landscape, the Baja California peninsula, have responded to environmental changes between LGM and present day with the aim of generating predictions about the effects of past climatic changes on population abundance and selection pressure.