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Last updated on April 19, 2014 at 7:35 EDT

Latest Pinus ponderosa Stories

2013-11-26 14:07:57

As trees grow larger in even-aged stands, competition develops among them. Competition weakens trees, as they contend for soil moisture, nutrients, and sunlight. Competition also increases trees’ risk to bark beetles and diseases, and subsequently leads to a buildup of dead fuels. A recent study, led by Dr. Jianwei Zhang, research forester at the U.S. Forest Service’s Pacific Southwest Research Station, considered if the onset of this risk could be determined. The study, which appears in...

Climate Change Threatens Survival Of Forests On Drier, Low-elevation Sites
2013-06-28 10:10:53

Oregon State University Predicted increases in temperature and drought in the coming century may make it more difficult for conifers such as ponderosa pine to regenerate after major forest fires on dry, low-elevation sites, in some cases leading to conversion of forests to grass or shrub lands, a report suggests. Researchers from Oregon State University concluded that moisture stress is a key limitation for conifer regeneration following stand-replacing wildfire, which will likely...

Mountain Pine Beetle Epidemic Propelled By 2001-2002 Drought
2012-11-05 14:04:12

University of Colorado Boulder Beetles then moved into wetter and higher elevations A new University of Colorado Boulder study shows for the first time that episodes of reduced precipitation in the southern Rocky Mountains, especially during the 2001-02 drought, greatly accelerated development of the mountain pine beetle epidemic. The study, the first ever to chart the evolution of the current pine beetle epidemic in the southern Rocky Mountains, compared patterns of beetle outbreak...


Latest Pinus ponderosa Reference Libraries

Arizona Pine, Pinus arizonica
2014-04-18 10:05:00

Arizona pine (Pinus arizonica) is found in the United States in northern Mexico, southeast Arizona, southwest New Mexico, and western Texas. The Arizona pine closely resembles the Ponderosa Pine found growing in the Sierra Madre Occidental in Arizona south to Durango, CO. The Arizona pine grows in high elevations from 5906-8038 feet. It is a medium to tall pine growing to heights of 82-114.8 feet tall with a trunk diameter of up to 3 feet 11 inches. The bark on young trees is dark brown...

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