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Recent Publications

The science of riparian ecology in the West developed over several decades, especially in the Southwest and California, as the importance of this ecosystem, its components, productivity, functions, and relationship to system hydrology became better understood.
Streams and riparian zones have been fertile ground for ecosystem science and a battleground for forest policy and management in the wet Pacific Northwest west of the crest of the Cascade Range for many decades. Competing, high-value resources of salmon and big Douglas-fir timber and their iconic places in cultures of the region sharpened the clash of values.
Heat produced from woody biomass accounts for a significant portion of renewable energy in the United States. Economic and federal policy factors driving institutional adoption of woody biomass heating systems have been identified and examined in previous studies, as have the effects of state policies in support of biomass heating.
As innovative harvest systems are developed, the extent to which they can be utilized on the landscape based on machine capabilities is often unclear to forest managers. Spatial decision support models may aid contractors and forest planners in choosing appropriate logging systems based on topography and stand characteristics.
Interagency Hotshot Crews (IHCs) are a crucial firefighting suppression resource in the United States. These crews travel substantial distances each year and work long and arduous assignments that can cause accumulated fatigue. Current dispatching practices for these crews are supposed to send the closest resource while adhering to existing fatigue-management policies.
Over the past 20 years, the mountain pine beetle (Dendroctonus ponderosae) has caused considerable tree mortality across the Rocky Mountain region of the western United States. Although the operational and cost impacts of dead timber are generally well known in the sawmill industry, there remains a need to better understand the impact of large-scale outbreaks on the industry at local and regional scales.
NASA’s Global Ecosystem Dynamic Investigation (GEDI) mission has been designed to measure forest structure using lidar waveforms to sample the earth’s vegetation while in orbit aboard the International Space Station. In this paper, we used airborne large-footprint (LF) lidar measurements to simulate GEDI observations from which we retrieved ground elevation, vegetation height, and aboveground biomass (AGB).
Drawing on national forest visitor use data from 722 overnight use recreation sites across 27 National Forests with oil and gas development, this work examines whether the presence of oil and gas development within five kilometers of an overnight recreation site affects site visitation. Findings suggest that sites within five kilometers of oil and gas wells see less visitation, compared to sites farther away from wells.
Southwestern white pine (Pinus strobiformis; SWWP) is a conifer species that occurs at mid to high elevations in the mountains of Arizona, New Mexico, and northern Mexico. A key component of mixed conifer forests in the region, SWWP is an important species for wildlife and biodiversity.