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Keyword: Long Valley Experimental Forest

A visual progression of the Fort Valley Restoration Project treatments using remotely sensed imagery (P-53)

Publications Posted on: September 30, 2008
The landscape surrounding the Fort Valley Experimental Forest in northern Arizona has changed dramatically in the past decade due to the Fort Valley Restoration Project, a collaboration between the Greater Flagstaff Forest Partnership, Coconino National Forest, and Rocky Mountain Research Station.

Revisiting Pearson's climate and forest type studies on the Fort Valley Experimental Forest (P-53)

Publications Posted on: September 30, 2008
Five weather station sites were established in 1916 by Fort Valley personnel along an elevational gradient from the Experimental Station to near the top of the San Francisco Peaks to investigate the factors that controlled and limited forest types. The stations were located in the ponderosa pine, Douglas-fir, limber pine, Engelmann spruce, and Engelmann spruce/ bristlecone pine ("timberline") forest types.

Characteristics of buckbrush shrubs exposed to herbivores after seven years of protection (P-53)

Publications Posted on: September 30, 2008
In dense ponderosa pine (Pinus ponderosa Laws.) forests of northern Arizona, forage limitations may lead to severe herbivory by large ungulates on certain plant species. In 1999, we fenced 76 buckbrush (Ceanothus fendleri Gray) shrubs to protect them from herbivores and study growth and reproduction in response to forest restoration treatments implemented on the Fort Valley Experimental Forest.

The Hill plots: A rare long-term vegetation study (P-53)

Publications Posted on: September 30, 2008
One legacy of the Fort Valley Experimental Forest is the number and quality of long-term studies associated with it. One such study is the "Hill plots," which began in 1912 and is still being actively studied. Livestock exclosures were built at five sites to examine vegetation recovery when protected from livestock grazing. Sites span a range of soil types and elevations.

"Growing trees backwards": Description of a stand reconstruction model (P-53)

Publications Posted on: September 30, 2008
We describe an individual-tree model that uses contemporary measurements to "grow trees backward" and reconstruct past tree diameters and stand structure in ponderosa pine dominated stands of the Southwest. Model inputs are contemporary structural measurements of all snags, logs, stumps, and living trees, and radial growth measurements, if available.

Forty years later at Taylor Woods: Merging the old and new (P-53)

Publications Posted on: September 30, 2008
The Taylor Woods "Levels-of-Growing-Stock" study was established in 1962 to create a replicated ponderosa pine density experiment for the Southwest, making a valuable addition to research in the Fort Valley Experimental Forest. Basal area treatments ranged from 5-20 m2/ha (19-80 ft2/ac) when installed, designed as growing stock levels 30/40, 60, 80, 100, 120 and 150. Residual trees averaged only 12 cm DBH despite being 42 years old.

Plant recruitment in a northern Arizona ponderosa pine forest: Testing seed- and leaf litter-limitation hypotheses (P-53)

Publications Posted on: September 30, 2008
Seed availability and leaf litter limit plant establishment in some ecosystems. To evaluate the hypothesis that these factors limit understory plant recruitment in Pinus ponderosa forests, I conducted a seeding and litter removal experiment at six thinned sites in the Fort Valley Experimental Forest, northern Arizona.

Memories of Fort Valley From 1938 to 1942 (P-53)

Publications Posted on: September 29, 2008
This delightful essay records Frank Wadsworth’s early forestry career at FVEF in the late 1930s. Frank married Margaret Pearson, G.A. and May Pearson’s daughter, in 1941. Pearson believed Frank could not continue to work for him because of nepotism rules, so Frank and Margaret moved to San Juan, Puerto Rico in 1942 where Frank continued his forestry career.

The Fort Valley Experimental Forest, ponderosa pine, and wildlife habitat research (P-53)

Publications Posted on: September 29, 2008
Wildlife research at the Fort Valley Experimental Forest began with studies to determine how to control damage by wildlife and livestock to ponderosa pine (Pinus ponderosa) reproduction and tree growth. Studies on birds, small mammals, and mule deer (Odocoileus hemionus) browsing were initiated in the early 1930s and 1940s but these were short term efforts to develop control techniques.

Contributions of silvicultural studies at Fort Valley to watershed management of Arizona's ponderosa pine forests (P-53)

Publications Posted on: September 29, 2008
Watershed management and water yield augmentation have been important objectives for chaparral, ponderosa pine, and mixed conifer management in Arizona and New Mexico. The ponderosa pine forests and other vegetation types generally occur in relatively high precipitation zones where the potential for increased water yields is great. The ponderosa pine forests have been the subject of numerous research and management activities.

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