Oak Woodland

Whetstone Mountains

The Whetstone Mountains reach their high point of 2,350 meters (7,711 feet) on Apache Peak. The basal area is relatively high for the Sky Islands beginning firmly in semi-desert or full grasslands...

Type of Content: Sky Island Profile
Sierra El Tigre

The Sierra El Tigre of northeastern Sonora is a rugged Sky Island mountain range. It covers substantial terrain – its basal area spreads out over 600 square miles. Surrounded by the Rio Bavispe...

Type of Content: Sky Island Profile
Sierra Pinito

The Sierra Pinito are a very nice range that at its upper limit has pure pine forest consisting of Arizona pine (Pinus arizonica). As with many Sky Islands logging took most old growth pine in the...

Type of Content: Sky Island Profile
Tumacacori Highlands, Atascosa Mountains

The Tumacacori Highlands are an extended area of high country and rolling hills. Two primary named mountains make up most of the highlands - the Atascosa Mountains and the Pajarito Mountains. This...

Type of Content: Sky Island Profile
Sierra Aconchi

The Sierra Aconchi is remote and little visited range that reaches elevations that support very small, limited stands of pure pine. Most of the range is oak woodland, with some pine/oak at higher...

Type of Content: Sky Island Profile
Sierra Mazatán

The Sierra Mazatán (also known as the Sierra Huerfana by locals) are at the southern edge of the Sky Island in the region. The range is on Sonora's coastal plain and the nearest high country to...

Type of Content: Sky Island Profile
Incilius alvarius - Sonoran Desert toad
Type of Content: Image Content
Crotalus cerberus, Arizona black rattlesnake
Type of Content: Image Content

Phrynosoma ditmarsi, rock horned lizard in the Sierra Murrieta, eastern Sonora. Lizard found in oak woodland on a steep, fairly dense, and mesic slope.

Type of Content: Gallery
Cnidoscolus angustidens
Type of Content: Image Content

AKA Sierra la Campanera on Inegi maps. Much of this sierra is composed of limestone, slightly adjusting plant composition. Monocots seems to be more prevalent because of it. This trip was a...

Type of Content: Gallery

Also known as the Sierra Huerfana by locals, this granitic mound east of Hermosillo harbors beautiful oak woodland and lush thorn-scrub on it's slopes. Find more info about this range at its Wild...

Type of Content: Gallery
Coluber mentovarius, Neotropical Whipsnake
Type of Content: Image Content
hepatic tanager
Type of Content: Image Content

Observations of the Sierra Madrean oak Quercus viminea in ten Sky Island mountain ranges 15 to 85 km south of the Arizona and New Mexico border in Sonora and Chihuahua help define the northern and...

Type of Content: Reports, Papers, Journal Articles
Rhamnus (Frangula) californica with fruit
Type of Content: Image Content
Mimosa grahamii leaves and thorns
Type of Content: Image Content
Band-tailed pigeons
Type of Content: Image Content
Giant wolf spider
Type of Content: Image Content
Micruroides euryxanthus
Type of Content: Image Content
Elegant trogon calling
Type of Content: Image Content
Crotalus willardi silus
Type of Content: Image Content
Praying mantis
Type of Content: Image Content

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