Effects of Land-Cover Transformation and Climate Change on the Distribution of Two Microendemic Lizards, Genus Uma, of Northern Mexico

Effects of land-cover transformation and climate change on the distribution of two endemic lizards, Crotaphytus antiquus and Sceloporus cyanostictus, of northern Mexico

“…Coupled with the fact that S. cyanostictus and C. antiquus have reduced vagility and low population sizes (Gadsden et al, Unpublished results), both species appear to be facing a critical situation in the near future. This has been observed for several other reptile species elsewhere (Ballesteros- Barrera et al, 2007). For example, since 1987, species of Anolis lizards that live in the cloud forest of Monteverde, Costa Rica have disappeared due to an increase of temperature and reduction in humidity (Schneider, 1999).…”

“…Important factors appear to include habitat fragmentation, introduction of exotic species, pollution, diseases, parasitism, and global climate change (de Chazal and Rounsevell, 2009;Sinervo et al, 2010). Effects of global warming on declining of reptiles are relatively unexplored, but there is a suggestion that large impacts may occur on species that have temperaturedependent sex determination, such as crocodiles and some turtles (e.g., Ballesteros-Barrera et al, 2007;Godfrey et al, 1999).…”

“…It is predicted that severe climatic changes will affect the center of the Chihuahuan Desert in the coming decades, particularly in the period 2020e2050. According to the A2 scenario, an increase of around 2 C and a significant reduction of rainfall are expected in the region by 2050 (Ballesteros- Barrera et al, 2007).…”

Effect of climate change on halophytic grasslands loss and its impact in the viability of Gopherus flavomarginatus

“…These two species show very low genetic variability; therefore, it has been pointed out that these species are in critical condition because of the transformation of their habitat (Gadsden et al 1993;Gadsden 1997;Ballesteros-Barrera et al 2007). Likewise, since 1987, in 20 of 50 amphibian species of cloud forest from Monte Verde, Costa Rica, including the endemic Golden Frog (Incilius periglenes), as well as species of the Anolis genus have disappeared because of habitat fragmentation (Schneider 1999).…”

Checklist of amphibians and reptiles of the state of Durango, México

“…One of the major threats that these species face is the reduction and modification of their habitat and, at least for U. paraphygas, global warming is predicted to have a major impact on its persistence (Ballesteros-Barrera et al 2007). Only X. bolsonae has been evaluated according to the Mexican regulations to assess its conservation status, and the extraction of individuals for the pet market was considered a major threat (Flores-Villela and Rubio-Pérez 2008).…”