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Research Papers, Notes and FIA Bulletins

The spruce beetle, Dendroctonus rufipennis, can cause extensive mortality of Engelmann spruce, Picea engelmannii, during outbreaks. Endemic populations breed in the underside of downed spruces. Outbreaks often develop after blowdowns that create abundant downed trees where beetle populations can increase. Occasionally, managers practice suppression to protect high-value resources.
Tests were conducted using 97 exploding targets (ammonium nitrate and aluminum powder) to examine the effects of product formulation, environment, and shooting on wildfire ignition. Tests in 2015 produced no ignitions in cold and humid weather conditions.
Residents in the wildland-urban interface (WUI) can play an important role in reducing wildfire’s negative effects by performing wildfire risk mitigation on their property. This report offers insight into the wildfire risk mitigation activities and related considerations, such as attitudes, experiences, and concern about wildfire, for people with homes in the Pagosa Fire Protection District of Archuleta County, Colorado.
Residents in the wildland-urban interface (WUI) can play an important role in reducing wildfire’s negative effects by performing wildfire risk mitigation on their property. This report offers insight into the wildfire risk mitigation activities and related considerations, such as attitudes, experiences, and concern about wildfire, for people with homes in select communities in La Plata County, Colorado.
Residents in the wildland-urban interface (WUI) can play an important role in reducing wildfire’s negative effects by performing wildfire risk mitigation on their property. This report offers insight into the wildfire risk mitigation activities and related considerations, such as attitudes, experiences, and concern about wildfire, for people with homes in select communities in Montezuma County, Colorado.
This report presents a summary of the most recent Forest Inventory and Analysis summary of Montana’s forests based on field data collected between 2006 and 2015. The report includes descriptive highlights and tables of area, numbers of trees, biomass, volume, growth, and mortality, as well as an industry report. Most sections and tables are organized by forest type or forest-type group, tree species group, diameter class, or owner group.
Scientists and managers initiated a collaborative process to assist the Rio Grande National Forest (RGNF) with bringing climate change information into its Forest Planning Process. The first objective of the collaborative, 2-day workshop was to present and discuss in a workshop format the salient climate change science for the RGNF landscape, in terms of projections, impacts, and vulnerabilities.
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.

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