Pine/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
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
Small stripped red beetle in pine/oak forest
Type of Content: Image Content

The Sierra de Bacadéhuachi is a poorly sampled extension of the Sierra Madre Occidental (SMO) located in east-central Sonora near the town of Bacadéhuachi. Sampling of moths using mercury vapor...

Type of Content: Reports, Papers, Journal Articles

Aldo Leopold's son, Starker Leopold, reviews changes to the Rio Gavilan region in the northern Sierra Madre since he was a kid.

Type of Content: Reports, Papers, Journal Articles

The pine-oak forests of the Sierra Madre Occidental, a mountain range in NW Mexico, have recently been recognized as an area of high endemism and biodiversity. Selective logging threatens three...

Type of Content: Reports, Papers, Journal Articles
Hexalectris grandiflora in Sonora
Type of Content: Image Content
Ceanothus fendleri in flower
Type of Content: Image Content
Quercus hypoleucoides, silverleaf oak
Type of Content: Image Content
Crotalus pricei, twin-spotted rattlesnake
Type of Content: Image Content
Arbutus xalapensis leaves and bark
Type of Content: Image Content
Wildfire in the Sierra Madre of Sonora

This wildfire was likely human caused and was burning in pine and oak forest primarily in the understory.

Type of Content: Image Content

We studied annual variation in reproductive activity and productivity of the Thick-billed Parrot (Rhynchopsitta pachyrhyncha) during a five year period (1997-2001), in five nesting areas at the...

Type of Content: Reports, Papers, Journal Articles

The pine-oak woodlands of the Sierra Madre Occidental of Mexico extend for about 1100 km from the northern end ofthe Sonoran-Chihuahuan border southward to the region ofthe common borders of...

Type of Content: Reports, Papers, Journal Articles
Type of Content: Gallery
Type of Content: Gallery
Type of Content: Gallery

Bird survey trip by Aaron Flesch and crew. Most of the mountain range burned in a fire in 2011, but there is very little damage due to the fact this range seems to burn every few years.

Type of Content: Gallery
Sceloporus jarrovii, Yarrow's spiny lizard
Type of Content: Image Content

Photos from the Sierra Púrica in Sonora.

Type of Content: Gallery

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