How does elevation affect Coues deer behavior in Sonora?

Habitat Use and Elevation

In Sonora, Coues deer tend to inhabit mid-to-high elevations (2,000-3,500 feet) where vegetation is more lush and verdant, particularly during the winter months. At lower elevations, vegetation may be scarce, and deer may be more susceptible to human disturbance and predation, prompting them to seek higher ground. For example, a study in the Sierra San Luis Mountains found that Coues deer concentrated in areas above 2,500 feet during the winter.

Food Availability and Elevation

As elevation increases, Coues deer in Sonora tend to shift their diet from browse (shrubs, trees) to herbaceous vegetation (grasses, forbs), which is more abundant at higher elevations. This dietary shift can be particularly pronounced in areas with limited browse, such as those with extensive juniper and oak woodlands. For instance, research in the Pinaleño Mountains found that deer in areas with high juniper cover tended to eat more herbaceous vegetation at elevations above 3,000 feet.

Human Activity and Elevation

Elevation can also affect human activity patterns in Sonora, which can, in turn, influence Coues deer behavior. For example, at higher elevations, human activities such as livestock grazing, logging, and mining are often less intense, creating a more stable environment for deer. Conversely, areas with more frequent human activity, such as livestock grazing at lower elevations, can lead to increased deer mortality and habitat disturbance. Understanding the relationship between elevation and human activity is essential for effective deer management in Sonora.