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.