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Keyword: Pinus edulis

Microbial and nitrogen pool response to fuel treatments in Pinyon-Juniper woodlands of the southwestern USA

Publications Posted on: August 30, 2018
Wildfire mitigation in Pinyon-Juniper woodlands in the Colorado Plateau region is a management priority. Two wildfire mitigation treatments, mastication and thin-pile-burn, are often chosen based on costs and availability of equipment, yet there are ecological concerns with either treatment.

Dynamics of a pinyon-juniper stand in northern Arizona: a half-century history

Publications Posted on: May 12, 2016
This paper adds to the limited knowledge of stand dynamics in pinyon-juniper woodlands by reporting on the changes in species composition, numbers of trees, arrangements of trees, and total height and volume in a stand from late 1938 to early 1991. This information should be helpful in managing pinyon-juniper woodlands to sustain their productivity and maintain their multiple-use values.

Proceedings - pinyon-juniper conference; 1986 January 13-16; Reno, NV

Publications Posted on: January 07, 2016
Includes more than 90 papers bringing together research accomplishments of the last 10 years including ongoing research on the ecology and management of pinyon-juniper ecosystems. Scientist and management points of view are presented.

Pinyon pine mortality alters communities of ground-dwelling arthropods

Publications Posted on: September 04, 2014
We documented the effect of drought-induced mortality of pinyon pine (Pinus edulis Engelm.) on communities of ground-dwelling arthropods. Tree mortality alters microhabitats utilized by ground-dwelling arthropods by increasing solar radiation, dead woody debris, and understory vegetation.

Precipitation thresholds and drought-induced tree die-off: Insights from patterns of Pinus edulis mortality along an environmental stress gradient

Publications Posted on: June 26, 2013
Recent regional tree die-off events appear to have been triggered by a combination of drought and heat - referred to as 'global-change-type drought'. To complement experiments focused on resolving mechanisms of drought-induced tree mortality, an evaluation of how patterns of tree die-off relate to highly spatially variable precipitation is needed.

Attributes associated with probability of infestation by the pinon ips, Ips confusus, (Coleoptera: Scolytidae) in pinon pine, Pinus edulis

Publications Posted on: January 13, 2012
We examined attributes of pinon pine (Pinus edulis) associated with the probability of infestation by pinon ips (Ips confusus) in an outbreak in the Coconino National Forest, Arizona. We used data collected from 87 plots, 59 infested and 28 uninfested, and a logistic regression approach to estimate the probability ofinfestation based on plotand tree-level attributes.

Pinyon-juniper woodlands in Zion National Park, Utah

Publications Posted on: November 14, 2011
Juniperus osteosperma-Pinus monophylla or P. edulis (P-J) woodlands are the most widespread plant community in Zion National Park (ZNP), southwestern Utah. These woodlands dominate nearly half of the park's land area. Our study of this vegetational complex is based on a sample consisting of 115 macroplots (each 0.01 ha in area) objectively distributed across the entire area of ZNP.

Relationship of stand characteristics to drought-induced mortality in three Southwestern pinyon-juniper woodlands

Publications Posted on: September 21, 2009
Extreme drought conditions accompanied by rising temperatures have characterized the American Southwest during the past decade, causing widespread tree mortality in pinon-juniper woodlands. Pinon pine (Pinus edulis Engelm.) mortality is linked primarily to outbreaks of the pinyon ips (Ips confusus (Leconte)) precipitated by drought conditions.

Ecosystem consequences of regional pinyon mortality

Publications Posted on: August 13, 2009
Pinyon-juniper (Pinus edulis - Juniperus spp.) woodlands in the American Southwest have expanded in many areas since the late Nineteenth century. Woodland expansion has occurred in both, extent and increasing stand density. Expansion of woodlands has been attributed to reduced fire frequency, increased ungulate grazing, and changes in climate.

The impact of pinyon mortality on ground-dwelling arthropod communities

Publications Posted on: March 19, 2009
We documented the indirect impact of drought-induced mortality of pinyon pine (Pinus edulis) on ground-dwelling arthropod communities. Tree mortality alters microhabitats utilized by ground-dwelling arthropods through increased solar radiation, dead woody debris, and understory vegetation.