Historical State of Sonoran Desert Ecosystem

The Sonoran Desert is a large 120,000 square mile region encompassing desert territory expanding from Northern Mexico, Baja California, and Southwestern United States. The Sonoran desert is mainly divided into territorial states in Mexico: Sonora, Baja California, Baja California Sur; in the Unites States Arizona and Southeastern California. The Sonoran Desert receives the most rain compared to any other desert in the world; it gets 10 to 14 inches of rainfall a year (Chadwick ).The reasons the Sonoran Desert gets more rain is because it is near the Western Pacific Ocean. The abundance of rain in this desert region allows for more life to flourish. The Sonoran Desert is a diverse desert with many animals and vegetation such as succulent plants. Such animals include: coyotes, javelina, bobcats, the Sonoran toad, cactus ferruginous pygmy owl, cactus wren, banded gila monster, turtles, and snakes. Some of its plants include saguaro cactus, organ pipe cactus, prickly pear cactus, barrel cactus, soaptree yucca, jumping cholla, palo verde, ocotillo, and desert ironwood ("Blueplanetbiomes"). These are just some examples of the Sonoran organisms that live and grow in the desert but there are many more. The Sonoran Desert has historically been affected by human activities dating back to Native Americans. The Natives Americans living near the desert practiced agriculture in areas such along the Tucson Basin (Sheridan). The Native Americans Hohokam dug canals that took water from rivers into their agricultural fields (Sheridan). When Europeans arrived in the “New World” they brought new animals and technology for agriculture that the Natives used and essentially still continue. Mining also developed due to Europeans which led to towns arising and consequently, “hillsides were denuded, streams diverted, water tables polluted, and vegetation communities irrevocably changed” (Sheridan) from the arrival of Europeans between the 16th to 19th century. Then Anglo- American occupation of Sonoran territories in the United States also have had negative impacts with three extractive industries the first one being livestock raising, secondly copper mining, and thirdly agriculture (Sheridan). These human practices have altered the landscape of the desert.
  
Sonoran Desert Plants
 http://www.flickr.com/photos/29845002@N02/5376328161/lightbox/
 

No comments:

Post a Comment