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Ponderosa Pine Ecosystem Ponderosa Pine (Pinus ponderosa) is a large coniferous pine native to the western U.S. and Canada. Within this wide range, ponderosa pine grows across highly variable biophysical settings (e.g., soils, slopes, aspects, associated vegetation, and fauna). Ponderosa pine is three-needled, however, fascicles with both two and.
A recent study led by Mike Stoddard and a team of ERI-NAU ecologists examined two decades of ecological responses to forest restoration treatments at a set of sites in ERI’s Long-term Ecological Assessment and Restoration Network (LEARN). The analysis showed that restoration treatments increase resilience to climate change in southwestern ponderosa pine forests.
This study evaluated forest structure, regeneration, old-tree mortality, and tree growth over 21 years in a large (2114 ha) Ponderosa pine-Gambel oak forest in northern Arizona. By the end of the study, tree density and basal area in the treated area were reduced by 56% and 38%, respectively, compared to the untreated control.
easing forest resiliency and protecting human communities. Forest restoration improves wildland health by re-turning overgrown forests to a less dense, functional, nd diverse condition through specific treatments, such as: Mechanically thinning and removing excess small trees.• Reintroduci. g low-severity, more natural fire and/or prescr.
Pinyon-Juniper Ecosystem. Pinyon-juniper ecosystems are distributed throughout the western United States and are broadly defined as including one species of pinyon pine (subsection cembroides) and/or one species of juniper (section Sabina). The majority of the pinyon-juniper type is found in regions subject to temperature extremes and limited ...
Spatial patterns of ponderosa pine regeneration in high-severity burn patches. Forest Ecology and Management, 405:134-149. Ouzts, J., T. Kolb, D.W. Huffman, A.J. Sánchez Meador. 2015. Post-fire ponderosa pine regeneration with and without planting in Arizona and New Mexico. Forest Ecology and Management, 354:281-290.
Forest Structure and Composition Forest structure consists of uneven aged, grouped, open stands composed of ponderosa pine, Douglas fir, Southwestern white pine, limber pine. Historic conditions varied widely and it is difficult to generalize about historic tree density, fire regime, or forest structure and composition.
The Ecological Restoration Institute is an independent research branch of Northern Arizona University. It was founded by forest ecologist and NAU Emeritus Professor W. Wallace Covington, who began studying the ecology of southwestern ponderosa pine forests in the mid-1970s. Wally Covington retired in January 2020.
Andrew J. Sánchez Meador Executive Director, Ecological Restoration Institute Professor of Forest Biometrics and Quantitative Ecology, School of Forestry Education PhD, Forest Science, Northern Arizona University, December 2006 MS, Forestry, Mississippi State University, May 2002 BS, Forestry, Mississippi State University, May 1999 Andrew grew up in Mississippi and received his BS and MS from ...
study of the air drying of ponderosa pine in Arizona was a part of this broad program. (1) Maintained at Madison, Wis., in cooperation with the University of Wisconsin. (2) Acknowledgment is made to L. A. Mueller and E. S. Kotok, Forest Utilization, Rocky Mountain Forest Range Experiment Station, Fort Collins, Colorado, as co-workers in this ...