Sierra Madre Occidental

The floras of the tropical vegetation in the Sky Island Sierra la Madera (SMA) near Moctezuma in northeastern Sonora (30°00’N 109°18’W) and the Yécora (YEC) area in the Sierra Madre Occidental (...

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

Erpetogomphus molossus is described from 3 male and 3 female specimens (holotype and allotype in collection of Insti- tuto Biologico de la Universidad Nacional Autónoma de México) from the...

Type of Content: Reports, Papers, Journal Articles
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

Scenically spectacular, the Sierra Madre Occidental is challenging to researchers in ecology as well as in geology. Like mountain gradients elsewhere in tropical Mexico, it offers a variety of...

Type of Content: Reports, Papers, Journal Articles
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