Semidesert Grassland

Semi-desert grasslands are characterized by a mixing of grasslands with certain desert associated species. True grasslands cannot thrive in these areas usually because they are either too...

Type of Content: Vegetation Communities

In the San Luis Mountains south and southwest of Arivaca.

Type of Content: Gallery
Rivina humilis
Type of Content: Image Content
Sonora semiannulata (groundsnake)
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

These photos are of Echinomastus erectocentrus var. erectocentrus (Needle-Spined Pineapple Cactus) near Vail, AZ.

Type of Content: Gallery
Photo: Desert wash with O'odham grinding hole
Type of Content: Image Content
Starving cow in semi-desert grasslands
Type of Content: Image Content
Ocotillo branch with leaves up-close
Type of Content: Image Content
Charcoal operation - cutting and partial burning of mesquite, Sonora

Cutting and partial burning of mesquite in Sonora. Making charcoal is a small extractive industry in some areas. It is sometimes done with care by taking a limb or two from every mesquite, but can...

Type of Content: Image Content
Atascosa Peak view from the south
Type of Content: Image Content
  • An Assessment of the Spatial Extent and Condition of Grasslands cover

Grasslands of central and southern Arizona, southwestern New Mexico and northern Mexico, an area known as the Apache Highlands Ecoregion, have undergone dramatic vegetation changes over the last...

Type of Content: Reports, Papers, Journal Articles
Saguaro and the northern Sierra El Humo
Type of Content: Image Content
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