Grazing

  • Protecting El Pitayal, conserving coastal thorn-scrub in Sonora.

This presentation is meant to stimulate action by informing others of the nature of our goals and the urgency of the need for persons with the expertise in real estate law and land acquisition to...

Type of Content: Reports, Papers, Journal Articles
Photo: Heavily overgrazed bottomland in the Sonoran Desert

This previously very good soil supporting mesquite bosque as well as sacaton fields has been decimated by cattle. Much of the soil has (and continues to) blow away in the wind.

Type of Content: Image Content
Tilling the Sonoran Desert for cattle

Some ranchers get convinced tilling of the desert soils will result in more forage for their cows. Needless to say in a desert environment this does not work. It may promote some extra grass for 1...

Type of Content: Image Content
Cow with cholla on its face

Cows in the dry Sonoran Desert often must resort to eating cactus, including the famously painful jumping cholla. Seeing cattle in Sonora with cholla balls on their face or prickly pear spines...

Type of Content: Image Content
Santa Cruz River, San Lazaro, Sonora
Type of Content: Image Content

The Center for Biological Diversity and Defenders of Wildlife hereby formally petition the U.S. Fish and Wildlife Service (also “Service”) to list one of the following entities of cactus...

Type of Content: Reports, Papers, Journal Articles

The Rio Yaqui drainage basin of northwestern Mexico comprises about 73,000 km of the most inaccessible and rugged terrain in western North America (Blásquez 1959). An average annual discharge of...

Type of Content: Reports, Papers, Journal Articles
  • Celebrating Arizona’s Rivers - the San Pedro River

Created as part of a collection of Arizona river overview documents titled "River of the Month Series, Celebrating Arizona’s Rivers". These reports were prepared and supported by Environmental...

Type of Content: Reports, Papers, Journal Articles
Heavily overgrazed desert soil dust pit
Type of Content: Image Content
Buffelgrass taking over hill in Sonoran Desert
Type of Content: Image Content

Jaguars are endangered in Mexico and the United States, necessitating careful monitor- ing of population status. We determined minimum numbers of jaguars and sympatric pumas in a small population...

Type of Content: Reports, Papers, Journal Articles
Starving cow in semi-desert grasslands
Type of Content: Image Content
Type of Content: Image Content
Tropical Deciduous Forest cleared for cattle (©AZ/Sonora Desert Museum)

TDF and thorn-scrub are often cleared to make way for planting of non-native buffelgrass (Pennisetum ciliare) for cattle forage. Calumnar cactus are often left, but do not always survive....

Type of Content: Image Content

This horrible photo of the killing of mountain lions in the name of protecting livestock is a reminder of the gruesome nature of the business.

Type of Content: Image Content
  • Rio Sonoyta map

The Rio Sonoyta, despite grazing across the watershed, agriculture, groundwater pumping, and the incredible dry nature of the region, still has perennial flow in stretches west of the town of...

Type of Content: Basic page

An Endangered Species within Organ Pipe Cactus National Monument: Historical Significance and Management Challenges

The largest body of water at Organ Pipe Cactus National Monument is...

Type of Content: Reports, Papers, Journal Articles
  • Overgrazed land with cow in Lower Colorado River Valley Sonoran Desert

Cattle grazing is the default use of most land in Sonora. It is a large part of life for rural people of Sonora and contributes to a number of people's incomes. It is also the source of the state'...

Type of Content: Basic page

This area was overgrazed, then tilled and planted with buffelgrass, and now the buffelgrass is almost gone. Older plants are on mounds of soil indicating how much topsoil has washed and blown away...

Type of Content: Image Content
Dead desiccated cows, Sonora

A common sight in Sonora

Type of Content: Image Content
Overgrazed Sonoran Desert
Type of Content: Image Content
Dead cottonwood on upper Santa Cruz River

Southeast of Nogales, Sonora.

Type of Content: Image Content

It's becoming common knowledge that buffelgrass (Pennisetum ciliare) is a huge problem for native vegetation in the Sonoran Desert of southern Arizona. In Sonora the problem is much worse. Vast...

Type of Content: Blog entry
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