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General Technical Reports

For centuries, humans occupied and altered California Park, a unique high-elevation rangeland in northwestern Colorado. The area’s rich biodiversity attracted Native American hunters and successive European-American cattlemen, sheepherders, homesteaders, and recreationists.
Suppression of most wildland fire ignitions has defined fire management in the United States since 1935. These past suppression activities, along with climate change impacts and other factors, have resulted in longer fire seasons and increased frequency of large fires in many forest ecosystems across the western United States, thus resulting in a fire management crisis.
Since 2000, the Black Hills National Forest (BHNF) has experienced several disturbances that have reduced standing live sawtimber volume which will affect future harvest levels.
The New Mexico Shared Stewardship Agreement created a framework to allow for the State of New Mexico and the USDA Forest Service to collaboratively identify mutual restoration goals to respond to the increasing suite of challenges facing the communities, landscapes, and natural and cultural resources of New Mexico.
We examined tradeoffs between managing for fire resilience versus economic objectives for a large scale (240,000 ha) federal collaborative forest restoration project in the southwestern United States - the Four Forest Restoration Initiative - created to improve fire resilience in fire-adapted ponderosa pine forests that have experienced a century of fire exclusion.
Our objectives were to (1) quantify MPB-caused mortality within the past 10 years in stands where RM bristlecone and limber pines co-occur, (2) evaluate in the field if MPB is capable of successful brood production in RM bristlecone pine, and (3) quantify the timing and concentration of constitutive and induced SM defenses, and morphological defenses, in RM bristlecone and limber pine growing in the same stands across the range of RM bristleco
The 2012–2016 drought and associated bark beetle outbreaks in California resulted in extensive tree mortality and provided a unique opportunity to examine questions of why some trees die while others survive these co-occurring disturbances and to increase understanding of how subsequent bark beetle-caused tree mortality alters fuel profiles and forest flammability over time.
This publication describes a large collection of gravel bedload transport measurements taken in numerous small Rocky Mountain streams (the database is available at
The Fireshed Registry is an interactive geospatial data portal providing access to data describing past, present, and future trends regarding wildfire exposure to communities and forest and fuel management.
This report provides a multiscale approach for assessing the geomorphic sensitivity of streams and ecological resilience of riparian ecosystems, including meadows, in upland watersheds of the Great Basin to disturbances and management actions. Part I describes the key concepts needed to understand geomorphic sensitivity, ecological resilience, and ecological integrity.