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Single-leaf pinyon–Utah juniper woodland in northeastern Nevada near Overland Pass at the south end of the Ruby Mountains. Pinyon–juniper woodland, also spelled piñon–juniper woodland, is a biome found mid-elevations in arid regions of the Western United States, characterized by being an open forest dominated by low, bushy, evergreen junipers, pinyon pines, and their associates.
The main plant communities, or zones, are woodlands, mountain woodlands, and grassland and shrub. The woodland zone, or pinyon-juniper woodland, covers the largest area.. It consists of open woodlands of short trees, mostly pinyon pine (Pinus edulis throughout the ecoregion, and Pinus monophylla subsp. fallax in the southwestern portion of the ecoregion) and species of juniper (Juniperus spp
Notable animals in this zone include the pinyon jay and the desert bighorn sheep. The Pinyon-Juniper Woodland Zone extends down to 5,000 feet (1,500 m) elevation. [4] Below 5,000 feet (1,500 m), there is not enough precipitation to support trees.
It is further distinguished from the deciduous sub-alpine scrub above the pinyon–juniper woodlands on the same side of the Peninsular ranges. Due to the lower annual rainfall (resulting in slower plant growth rates) when compared to cismontane chaparral, desert chaparral is more vulnerable to biodiversity loss and the invasion of non-native ...
1 Forest and woodland classification. 2 Grassland classification. 3 Alpine classification. 4 Notes. ... FRES 35 Pinyon - juniper; Grassland classification
In the Northern Basin and Range ecoregion, juniper grows alone and without distinct elevational banding. Historically, miners cut pinyon and juniper for mine timbers. Since the beginning of fire suppression early in the last century, juniper–pinyon woodland has increased in density and expanded into lower sagebrush zones. More recently, large ...
It grows at moderate altitudes of 750–1,600 m (2,460–5,250 ft). Habitats include: pinyon–juniper woodland with single-leaf pinyon (Pinus monophylla); Joshua tree woodland; and foothill woodlands, in the montane chaparral and woodlands and interior chaparral and woodlands sub-ecoregions. [citation needed]
Pinyon-juniper woodlands are nurse plants of ecological facilitation between chapparel scrubland and forested environments at higher elevations. [16] Juniper tends to be more predominant at lower elevations, while Piñon Pine grow more vigorously at slightly higher elevations. Other flora varieties of this plant community may include: winterfat ...