Dehydration Rate and a Novel Model to Aid Search and Relief for Undocumented Border Crossers in the Sonoran Desert

Climate impact or policy choice? The spatiotemporality of thermoregulation and border crosser mortality in southern Arizona

“…This is counterintuitive, given a known increase in UBC mortality caused by heat-related illnesses (Martínez et al, 2021); and it suggests that there are other variables driving this trend. These include the already documented increase in time (+26%), distance (+16%) and total energy expenditure (+51%) required of border crossers (Chambers et al, 2021a,b), coupled with a lack of water available for rehydration (Androff & Tavassoli, 2012;Boyce et al, 2019;Chambers & Miranker, 2022). Each of these variables can cause an increase in body temperature and an exercise-induced hyperthermia, even if the immediate terrain is better suited to compensability (Hillman et al, 2011;Kenefick et al, 2007;Nybo et al, 2001).…”