After an original map by R

Chihuahuan desert boundaries in dating

Despite all this diversity, cacti do not usually dominate the landscape in the Chihuahuan Desert. Like much of the southwestern United States, the Chihuahuan Desert is marked by the occurrence of mountain ranges and valleys. Creosote bush Larrea tridentata is the dominant plant species on gravelly and occasional sandy soils in valley areas within the Chihuahuan Desert. The claret cup cactus Echinocereus triglochidiatus displays its beautiful red flowers in May and June.

Despite all this diversity

The region has been badly degraded, mainly due to grazing. All areas are subject to occasional winter frosts, and northern portions regularly receive hard freezes and some snowstorms. The Chihuahuan Desert is dry partly because of the rain shadow of the mountain ranges on either side, the Sierra Madre Oriental and the Sierra Madre Occidental. Many botanists believe that these plants originated here or to the south, and radiated out through the New World. The other species it is found with depends on factors such as the soil, altitude, and degree of slope.

The boundaries of the Chihuahuan Desert region are imprecise, with variations in the way different scientists map it. As a result, different concepts have arisen through time as to what defines the Chihuahuan Desert and its boundaries. Most of this desert occurs in Mexico, with only the northern third in the United States.

Like much of the southwestern United

Because of its inland location between mountains, coastal storms lose moisture before they arrive here. It is predominantly a shrub desert without the large cacti and trees of the Sonoran Desert. Creosotebush Larrea tridentata is nearly ubiquitous. After an original map by R.

It is in an overlap area that is influenced by ecosystem components of the Sierra Madre, Rocky Mountains, and Great Plains. The hottest temperatures in the desert occur in lower elevation areas and in valleys. Because of its inland position and relatively high elevations, this desert tends to have hot summers and cool or cold winters. All areas are subject to occasional winter frosts, and northern portions regularly receive hard freezes. Regardless, such ranges provide habitats absent on the flatlands and add new species to the regional biota.