The ponderosa pine forests of northern Arizona are one of the state’s natural treasures. But they’re disappearing. The data ...

What native trees do we love in Arizona, and how do we relate to them? For a quick respite from the daunting statistics, take ...

Discover the Arizona overlook locals call their secret treasure, where mountain air and sweeping views steal the show.

Western North American Naturalist, Vol. 67, No. 1 (January 2007), pp. 120-132 (13 pages) Leaf litter accumulation during fire exclusion and increases in tree density in postsettlement southwestern ...

It’s hard to believe that what we now call the Dude Fire burn scar once was a ponderosa pine forest. Thousands of acres at the edge of the Mogollon Rim northeast of Payson were decimated in the deadly ...

FLAGSTAFF, Ariz. — Northern Arizona has missed out on a white Christmas, and if the lack of snowfall continues, scientists say there will likely be more far-reaching effects on the region’s pine trees ...

Arizona didn’t always burn this way. In the 1970s, when Wally Covington began studying the world’s largest contiguous ponderosa pine forest outside his Flagstaff window at Northern Arizona University, ...

Pinus ponderosa forests occupy numerous topographic and soil complexes across vast areas of the south-western United States, yet few data exist on species distributions and vegetation-environment ...

Northern Arizona has missed out on a white Christmas, and if the lack of snowfall continues, scientists say there will likely be more far-reaching effects on the region's pine trees. Scientists tell ...