 This paper examines the behavioral and spatial ecology of black-necked garter snakes, thamnophysertopsis, in a heterogeneous arid land riparian zone of lower Sabino Canyon, Tucson, Arizona. The authors found that the snakes' populations experienced a rapid decline due to extreme drought and wildfires, and that their behavior changed depending on the availability of surface water. They also noted that the snake's use of different micro-habitats was dependent on season and developmental stage. This research provides valuable insight into the behavioral and spatial ecology of this species, and its potential vulnerabilities in changing environments. This article was authored by Bryon R. Blaise, Samantha L. Johnson and John L. Koprowski.