Abstract
We described seasonal microhabitats of the lizards Uta stansburiana, Phrynosoma modestum, and Aspidoscelis tigris in the sand dunes of Médanos de Samalayuca, Chihuahua, Mexico. Uta stansburiana and A. tigris used many resources in common and frequently were observed under honey mesquites Prosopis glandulosa, the most common and largest shrub on our study site. In contrast, P. modestum was more common in bare areas. Uta stansburiana and A. tigris showed moderate to high overlap in vegetative cover and compaction of substrate. With respect to Uta stansburiana and A. tigris, P. modestum showed low-to-moderate overlap in microhabitats.Describimos los microhábitats estacionales de las lagartijas Uta stansburiana, Phrynosoma modestum y Aspidoscelis tigris en las dunas de arena Médanos de Samalayuca, Chihuahua, México. Uta stansburiana y A. tigris usaron muchos recursos en común y con frecuencia se observaron bajo mezquites Prosopis glandulosa, el arbusto más común y grande en nuestra área de estudio. En contraste, P. modestum fue más común en las áreas desprovistas de vegetación. Uta stansburiana y A. tigris mostraron traslapes moderados a altos en la cobertura vegetal y la compactación del sustrato. Con respecto a Uta stansburiana y A. tigris, P. modestum mostró traslapes bajos a moderados en cuanto al uso de los microhábitats.
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