This site provides reference materials for piñon and juniper species in the Intermountain West including Texas.  Eastern redcedar is not included. Access is provided to four popular publications (see sidebar to the right), as well as an extensive REFERENCE LIST. If you are aware of literature that has been missed or new articles coming out please send a complete reference to Richard.Miller@oregonstate.edu.

Piñon and juniper woodlands are estimated to occupy over 40 million ha in the western United States and extend south into Mexico.  In the Intermountain West woodlands are commonly associated with shrub-steppe communities often forming a mosaic of shrub-steppe and woodland across landscapes.  In a recent article (Romme et al. 2009) species of piñon and juniper are described as typically being found in three kinds of vegetation – woodlands, savannas, and wooded shrubland.  Piñon and juniper have expanded and contracted throughout the Holocene and have been currently expanding since the late 1800s.  To date 13 species and two subspecies of juniper (excluding J. communis) (Willson et al. 2008) and seven species of piñon (West 1999) have been identified in North America. 

SageSTEP (Sagebrush Steppe Treatment Evaluation Project)

Henri D. Grissino-Mayer Denrochronolgy Page

Joint Fire Science Program

The Great Basin Information Project

Oregon Wood Innovation Center