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Official websites use. Share sensitive information only on official, secure websites. Email: laurafc25 gmail. Climate changes, together with geographical barriers imposed by the Sierra Madre Oriental and the Chihuahuan Desert, have shaped the genetic diversity and spatial distribution of different species in northern Mexico. Northern Mexico became more arid during the Quaternary, modifying ecological communities.
Here, we try to identify the processes underlying the demographic history of P. We inferred that P. Our results of population genomic analyses reveal the presence of heterozygous SNPs in all populations. In addition, low migration rates across regions are probably related to glacial—interglacial cycles, followed by the gradual aridification of the Chihuahuan Desert during the Holocene. Keywords: Chihuahuan Desert, demographic contraction, historical isolation, Pinus pinceana , Pleistocene.
We focused on how phylogeography, historical demography, and historical migration have influenced the current genetic variation and geographic distribution of P. We analyzed the genomic data of two biogeographic zones where Pinus pinceana, exhibits high differentiation among populations. We used genomic information, along with climatic projections over the Pleistocene and Holocene, to infer the past demographic history of this species as well as its spatial and temporal distribution.
Geological and climatic events during the Pleistocene affected the diversity patterns of ChD communities Scheinvar et al. Such is the case for Ephedra compacta Loera et al. The ChD landscape maintains different vegetation types, such as grass steppes, xeric shrubs in the intermountain plains and valleys, and open woodlands at higher elevations Czaja et al.
