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Research Papers, Notes and FIA Bulletins

This report presents a summary of the most recent inventory of Arizona’s forests based on field data collected between 2001 and 2014. The report includes descriptive highlights and tables of forest and timberland area, numbers of trees, biomass, volume, growth, mortality, and removals. Most sections and tables are organized by forest type or forest-type group, species group, diameter class, or owner group.
Mastication is the process of chipping or shredding components of the tree canopy or above-ground vegetation to reduce the canopy, alter fire spread rates, and reduce crown fire potential. Mastication as a fuel treatment, either alone or in combination with prescribed fire, has been the subject of much research. This research has shown that modeling expected fire behavior in these fuels is challenging.
The planning units of the National Forest System are beginning to revise their existing land management plans using the 2012 Forest Service regulations. Ecological integrity is a central concept to the regulations. However, implementing the concept is challenging in light of climate change. Historical ecology, particularly the concept of natural range of variation, informs planning for ecological integrity and climate change.
A study of commercial timber-harvesting activities in Montana was conducted during 2011 to 2016 to estimate growing-stock removals, characterize current tree utilization and logging operations, and assist with estimating the amount of woody biomass left onsite after harvesting. Sample logging sites were selected within major geographic regions proportional to 5-year timber harvest volumes.
Typical indicators of rangeland health are used to describe health and functionality of a variety of rangeland ecosystems. Similar indicators may be applied to forested locations to examine ecological health at a local forest level. Four rangeland health indicators were adapted and applied to data compiled by the U.S.
This report presents a summary of the most recent inventory of Colorado’s forests based on field data collected between 2004 and 2013. The report includes descriptive highlights and tables of area, numbers of trees, biomass, carbon, volume, growth, mortality, and removals. Most sections and tables are organized by forest type or forest-type group, species group, diameter class, or owner group.
Residents in the wildland-urban interface can play an important role in reducing wildfires’ negative effects by performing wildfire risk mitigation on their properties. This report offers insight into the wildfire risk mitigation activities and related considerations such as attitudes, experiences, and concern about wildfire, for residents of the Telluride Fire Protection District of San Miguel County, Colorado.
This report presents a summary of the most recent inventory of New Mexico’s forests based on field data collected between 2008 and 2014. The results presented here summarize a complete cycle of New Mexico’s forest inventory, or 10 years’ worth of data collection, whereas the previous report was based only on 9 years’ worth of data collected under an accelerated implementation schedule between 2008 and 2012.
The mountain pine beetle, Dendroctonus ponderosae Hopkins, is a significant agent of tree mortality in lodgepole pine (Pinus contorta Dougl. ex Loud.) forests throughout western North America. A large outbreak of mountain pine beetle caused extensive tree mortality in north-central Colorado beginning in the late 1990s.
Whitebark pine plays a prominent role in high elevation ecosystems of the northern Rocky Mountains. It is an important food source for many birds and mammals as well as an essential component of watershed stabilization. Whitebark pine is vanishing from the landscape due to three main factors: white pine blister rust, mountain pine beetle outbreaks, and successional replacement by more shade-tolerant species.

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