Vegetative propagation of Juniperus osteosperma (Utah Juniper) by cuttings

2013 ◽  
Vol 14 (2) ◽  
pp. 76-84 ◽  
Author(s):  
K. R. Cope ◽  
L. A. Rupp
Keyword(s):  
Vegetative Propagation ◽  
Juniperus Osteosperma ◽  
Utah Juniper

Response of Two Sagebrush Sites to Low-Disturbance, Mechanical Removal of Piñyon and Juniper

2010 ◽  
Vol 3 (2) ◽  
pp. 122-129 ◽  
Author(s):  
Carson Baughman ◽  
Tara A. Forbis ◽  
Louis Provencher
Keyword(s):  
Great Basin ◽  
Ecological Effects ◽  
Tree Cover ◽  
Downy Brome ◽  
Pinus Monophylla ◽  
Juniperus Osteosperma ◽  
Mechanical Removal ◽  
Tree Thinning ◽  
Utah Juniper ◽  
Aerial Seeding

AbstractIn the Great Basin of the western United States, expansion of Pinus monophylla (singleleaf piñyon) and Juniperus osteosperma (Utah juniper) out of historic woodlands and into Artemisia spp. (sagebrush) shrubland communities can facilitate the invasion of exotic downy brome (Bromus tectorum) and lead to decreases in ecological and economic values of shrublands. This expansion has, therefore, been the focus of management efforts, including the thinning or removal of trees in areas that were historically shrubland. Our study examined the effects of tree thinning at two sites located in eastern Nevada, near the center of the Great Basin. Such projects can be controversial, so our goal was to estimate and document the ecological effects of low-disturbance tree thinning at these two sites. Both sites were mechanically thinned using a feller-buncher and were aerially seeded with native grasses. Aerial seeding had no apparent effect at either site. The site that had lower tree cover before treatment (Ely, NV) showed an increase in native forbs and a small increase in invasives. The site that initially had very high tree cover and low shrub cover (Mt. Wilson, NV) showed increases in native forbs and species diversity and a substantial increase in invasives. We conclude that low-disturbance methods for thinning encroaching trees can have positive ecological effects in shrublands but that the initial cover of both trees and native herbaceous species should be considered to determine the potential of the site to recover naturally from the seedbank and the risk of invasion by downy brome.

scholarly journals Habitat Preferences of Pinyon-Juniper Specialists Near the Limit of Their Geographic Range

The Condor ◽  
2001 ◽  
Vol 103 (2) ◽  
pp. 322-331 ◽  
Author(s):  
David C. Pavlacky ◽  
Stanley H. Anderson
Keyword(s):  
Colorado Plateau ◽  
Habitat Preferences ◽  
Rock Outcrops ◽  
Juniperus Osteosperma ◽  
The Family ◽  
Pinyon Pine ◽  
Selection For ◽  
Utah Juniper ◽  
Breeding Seasons ◽  
Polioptila Caerulea

Abstract We investigated habitat preferences for five pinyon-juniper specialists during the 1998 and 1999 breeding seasons in Utah juniper (Juniperus osteosperma) woodlands of southwestern Wyoming. We compared avian use and availability of vegetation features using univariate and multivariate analysis to detect selection for vegetative features of pinyon-juniper specialists near the northeastern range boundary of pinyon-juniper habitat on the Colorado Plateau. Gray Flycatchers (Empidonax wrightii), Juniper Titmice (Baeolophus griseus), and Bewick's Wrens (Thryomanes bewickii) preferred woodlands with high overstory juniper cover. The Juniper Titmouse was associated with senescent trees, Blue-gray Gnatcatcher (Polioptila caerulea) with rock outcrops and shrubs in the family Rosaceae, and Black-throated Gray Warbler (Dendroica nigrescens) with pinyon pine (Pinus edulis). We suggest the geographic distribution of four of five pinyon-juniper specialists is limited by the occurrence of pinyon pine in semiarid woodlands on the northeastern Colorado Plateau. The geographic limit for Blue-gray Gnatcatchers in this region may correspond to the presence of mountain mahogany in the woodland understory. The conservation of pinyon-juniper specialists in southwestern Wyoming will benefit from the maintenance of successional processes, particularly those that perpetuate mature woodlands with a pinyon pine component.

Thirty Thousand Years of Vegetation Changes in the Alabama Hills, Owens Valley, California

1995 ◽  
Vol 43 (2) ◽  
pp. 238-248 ◽  
Author(s):  
Peter A. Koehler ◽  
R.Scott Anderson
Keyword(s):  
Sierra Nevada ◽  
Vegetation Change ◽  
Vegetation Changes ◽  
Owens Valley ◽  
Juniperus Osteosperma ◽  
Pollen Types ◽  
Yucca Brevifolia ◽  
Utah Juniper ◽  
Coleogyne Ramosissima ◽  
Eastern Sierra Nevada

AbstractTwenty packrat (Neotoma) middens recovered from three sites (1265-1535 m) in the Alabama Hills, Inyo County, California, provide a ca. 31,450-yr record of vegetation change. Located ca. 7 km east of the Sierra Nevada, the middens document that Utah juniper (Juniperus osteosperma), Joshua tree (Yucca brevifolia), and bitterbush (Purshia tridentata) occupied the site between 31,450 and 19,070 yr B.P. Joshua tree and bitterbush departed by ca. 17,760 yr B.P., with cliffrose (Purshia mexicana) and joint-fir (Ephedra viridis) appearing. By 13,350 yr B.P., blackbush (Coleogyne ramosissima) and cholla (Opuntia echinocarpa) entered the record. Between 9540 and 7990 yr B.P., Utah juniper and other species now extralocal to the sites departed and modern components such as wolfberry (Lycium andersonii) and rubber rabbitbrush (Chrysothamnus teretifolius) appeared. The middle Holocene records little variation in plant macrofossil composition; however, pollen analysis reflects an increase in aquatic pollen types which might suggest more-open conditions. The transition to the modern vegetation associations at the sites occurred after ca. 2800 yr B.P. The record from the Alabama Hills correlates well with that of other regional vegetation data but documents conditions of increasing aridity earlier than many other packrat midden sites. A shift in understory vegetation between 19,070 and 17,760 yr B.P. may reflect a transition from glacial maximum to post-maximum conditions in the eastern Sierra Nevada.

scholarly journals Dendrochronology of Utah Juniper (Juniperus osteosperma(Torr.) Little)

2016 ◽  
Vol 72 (1) ◽  
pp. 1-14 ◽  
Author(s):  
R. Justin Derose ◽  
Matthew F. Bekker ◽  
Roger Kjelgren ◽  
Brendan M. Buckley ◽  
James H. Speer ◽  
...  
Keyword(s):  
Juniperus Osteosperma ◽  
Utah Juniper

scholarly journals Estimating Singleleaf Pinyon and Utah Juniper Volumes for Several Utilization Standards1

1987 ◽  
Vol 2 (2) ◽  
pp. 51-55 ◽  
Author(s):  
David C. Chojnacky
Keyword(s):  
Great Basin ◽  
Pinus Monophylla ◽  
Branch Diameter ◽  
Juniperus Osteosperma ◽  
Utah Juniper

Abstract Ratio equations were developed to estimate singleleaf pinyon (Pinus monophylla) and Utah juniper (Juniperus osteosperma) volume for several utilization standards. The equations constructed will estimate outside-bark volume between 1.5 and 6 in. minimum branch diameter and inside-bark volume between 1 and 5 in. Data for the equations were collected from 61 locations throughout the Great Basin. West. J. Appl. For. 2(2):51-55, April, 1987.

Sign in / Sign up

Export Citation Format

Share Document