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Keyword: Pinus ponderosa

Modern fire regime resembles historical fire regime in a ponderosa pine forest on Native American land

Publications Posted on: October 01, 2014
Forests on tribal lands in the western United States have seen the return of low-intensity surface fires for several decades longer than forests on non-tribal lands. We examined the surface fire regime in a ponderosa pinedominated (Pinus ponderosa) forest on the Hualapai tribal lands in the south-western United States.

Integrating single-species management and landscape conservation using regional habitat occurrence models: The northern goshawk in the Southwest, USA

Publications Posted on: September 30, 2014
Conservation planners and land managers are often confronted with scale-associated challenges when assessing the relationship between land management objectives and species conservation. Conservation of individual species typically involves site-level analyses of habitat, whereas land management focuses on larger spatial extents.

The 2002 Hayman Fire - ecological benefit or catastrophe? An understory plant community perspective

Publications Posted on: September 26, 2014
Fire has long been a keystone ecological process in Western forests. In ponderosa pine (Pinus ponderosa)/Douglas-fir (Pseudotsuga menziesii) forests of the Colorado Front Range, historical fires are believed to have been "mixed severity" in nature.

Using tree recruitment patterns and fire history to guide restoration of an unlogged ponderosa pine/Douglas-fir landscape in the southern Rocky Mountains after a century of fire suppression

Publications Posted on: September 26, 2014
Tree age and fire history were studied in an unlogged ponderosa pine/Douglas-fir (Pinus ponderosa/Pseudotsuga menziesii) landscape in the Colorado Front Range mountains. These data were analysed to understand tree survival during fire and post-fire recruitment patterns after fire, as a basis for understanding the characteristics of, and restoration needs for, an ecologically sustainable landscape.

A comment on “Management for mountain pine beetle outbreak suppression: Does relevant science support current policy?"

Publications Posted on: September 19, 2014
There are two general approaches for reducing the negative impacts of mountain pine beetle, Dendroctonus ponderosae Hopkins, on forests. Direct control involves short-term tactics designed to address current infestations by manipulating mountain pine beetle populations, and includes the use of fire, insecticides, semiochemicals, sanitation harvests, or a combination of these treatments.

Changes in tracheid and ray traits in fire scars of North American conifers and their ecophysiological implications

Publications Posted on: September 17, 2014
Fire scars have been widely used as proxies for the reconstruction of fire history; however, little is known about the impact of fire injury on wood anatomy. This study investigates changes in tracheid and ray traits in fire scars of Douglas fir (Pseudotsuga menziesii), western larch (Larix occidentalis) and ponderosa pine (Pinus ponderosa), and discusses their ecophysiological implications for tree recovery from fire.

Effect of prescribed burning on soil moisture and germination of southwestern ponderosa pine seed on basaltic soils

Publications Posted on: December 09, 2013
Prescribed burning created a more favorable seedbed by exposing mineral soil and increasing soil moisture, resulting in a twenty-fold increase in the number of seeds germinating on burned compared to unburned sites.

Fire-induced wounding elicits changes in the wood anatomy of North American conifers

Publications Posted on: September 30, 2013
Fire is a major disturbance agent in North American forests. Fires injure trees when heat transfer through the bark partially kills the cambium and the compartmentalization process results in a fire scar. Dendrochronologists use these scars in the xylem to reconstruct fire regimes. However, little information exists on the wood anatomy of fire scars.

Cultural practices for prevention and control of mountain pine beetle infestations

Publications Posted on: September 27, 2013
In recent years, the mountain pine beetle, Dendroctonus ponderosae Hopkins, has impacted >8.9 million hectares of forests in the western United States. During endemic populations, trees weakened by other agents are often colonized by D. ponderosae but may be difficult to detect due to their scarcity.

Pre-fire fuel reduction treatments influence plant communities and exotic species 9 years after a large wildfire

Publications Posted on: June 20, 2013
We used a multi-year data set from the 2002 Rodeo-Chediski Fire to detect post-fire trends in plant community response in burned ponderosa pine forests. Within the burn perimeter, we examined the effects of pre-fire fuels treatments on post-fire vegetation by comparing paired treated and untreated sites on the Apache-Sitgreaves National Forest.We sampled these paired sites in 2004, 2005 and 2011.