Daniel B Fagre, Ph.D.
Postdoctoral Fellow. Wildlife Biology. 1981-83. University of California, Davis
Ph.D. Animal Ecology. 1981. University of California, Davis
M.S. Animal Ecology. 1978. University of California, Davis and B.A. Environmental Science. 1975. Prescott College, Prescott, Arizona
B.A. Environmental Science. 1975. Prescott College, Prescott, Arizona
Dr. Daniel Fagre works for the United States Geological Survey as Research Ecologist and Director of the Climate Change in Mountain Ecosystems Project, and Lead Investigator in the U.S.G.S Benchmark Glacier Program. He has been working since 1991 in the Waterton-Glacier International Peace Park to understand how global-scale environmental changes will affect mountain ecosystems. Stationed at Glacier National Park, Montana, he has collaborated with other scientists around the world on diverse research projects that addresses glaciers, avalanches, amphibians, alpine plants, paleoclimates, snow chemistry and ecosystem dynamics of bioregions among others. He received his Ph.D. from the University of California, Davis, has been faculty affiliate at six different universities and mentored or sponsored many graduate students, published three books and 150+ scientific publications, and co-founded several national and international science networks. He is currently active in the Western Mountain Initiative, a program to coordinate mountain research across different areas; GLORIA, a global program to monitor alpine vegetation on mountain summits on six continents; and CIRMOUNT, a consortium of mountain scientists.
Science and Products
Climate change is widely acknowledged to be having a profound effect on the biosphere with many and diverse impacts on global resources. Mountain ecosystems in the western U.S. and the Northern Rockies in particular are highly sensitive to climate change. In fact, the higher elevations of the Northern Rockies have experienced three times the global average temperature increase over the past...
As Glacier National Park’s namesake glaciers recede, CCME staff are monitoring many of the park’s glaciers to determine the causes of change, assess their ecological and hydrological effects, and predict future changes and effects. Intensive research to determine the mass balance of Sperry Glacier will determine whether small cirque glaciers like Sperry can serve as reliable indicators of...
Detecting snow depth change in avalanche path starting zones using uninhabited aerial systems and structure from motion photogrammetry
Understanding snow depth distribution and change is useful for avalanche forecasting and mitigation, runoff forecasting, and infrastructure planning. Advances in remote sensing are improving the ability to collect snow depth measurements. The development of structure from motion (SfM), a photogrammetry technique, combined with the use of...Peitzsch, Erich H.; Fagre, Daniel B.; Hendrikx, Jordy; Birkeland, Karl W.
Identifying major avalanche years from a regional tree-ring based avalanche chronology for the U.S. Northern Rocky Mountains
Avalanches not only pose a major hazard to people and infrastructure, but also act as an important ecological disturbance. In many mountainous regions in North America, including areas with existing transportation corridors, reliable and consistent avalanche records are sparse or non-existent. Thus, inferring long-term avalanche...Peitzsch, Erich H.; Fagre, Daniel B.; Pederson, Gregory T.; Hendrikx, Jordy; Birkeland, Karl W.; Stahle, Daniel
Local topography increasingly influences the mass balance of a retreating cirque glacier
Local topographically driven processes – such as wind drifting, avalanching, and shading – are known to alter the relationship between the mass balance of small cirque glaciers and regional climate. Yet partitioning such local effects from regional climate influence has proven difficult, creating uncertainty in the climate representativeness of...Florentine, Caitlyn; Harper, Joel T.; Fagre, Daniel B.; Moore, Johnnie; Peitzsch, Erich H.
Distance and environmental difference in alpine plant communities
Differences in plant communities are a response to the abiotic environment, species interactions, and dispersal. The role of geographic distance relative to the abiotic environment is explored for alpine tundra vegetation from 319 plots of four regions along the Rocky Mountain cordillera in the USA. The site by species data were ordinated using...Malanson, George P.; Zimmerman, Dale L.; Fagre, Daniel B.
Relations of alpine plant communities across environmental gradients: Multilevel versus multiscale analyses
Alpine plant communities vary, and their environmental covariates could influence their response to climate change. A single multilevel model of how alpine plant community composition is determined by hierarchical relations is compared to a separate examination of those relations at different scales. Nonmetric multidimensional scaling of species...Malanson, George P.; Zimmerman, Dale L.; Kinney, Mitch; Fagre, Daniel B.
Glaciological measurements and mass balances from Sperry Glacier, Montana, USA, years 2005–2015
Glacier mass balance measurements help to provide an understanding of the behavior of glaciers and their response to local and regional climate. In 2005 the United States Geological Survey established a surface mass balance monitoring program on Sperry Glacier, Montana, USA. This project is the first quantitative study of mass changes of a glacier...Clark, Adam; Fagre, Daniel B.; Peitzsch, Erich H.; Reardon, Blase A.; Harper, Joel T.
Using structure from motion photogrammetry to examine glide snow avalanches
Structure from Motion (SfM), a photogrammetric technique, has been used extensively and successfully in many fields including geosciences over the past few years to create 3D models and high resolution digital elevation models (DEMs) from aerial or oblique photographs. SfM has recently been used in a limited capacity in snow avalanche research and...Peitzsch, Erich H.; Hendrikx, Jordy; Fagre, Daniel B.
Floristic similarity, diversity and endemism as indicators of refugia characteristics and needs in the West
The floras of mountain ranges, and their similarity, beta diversity and endemism, are indicative of processes of community assembly; they are also the initial conditions for coming disassembly and reassembly in response to climate change. As such, these characteristics can inform thinking on refugia. The published floras or approximations for 42...Malanson, George P.; Zimmerman, Dale L.; Fagre, Daniel B.
Glacier-derived August runoff in northwest Montana
The second largest concentration of glaciers in the U.S. Rocky Mountains is located in Glacier National Park (GNP), Montana. The total glacier-covered area in this region decreased by ∼35% over the past 50 years, which has raised substantial concern about the loss of the water derived from glaciers during the summer. We used an innovative...Clark, Adam; Harper, Joel T.; Fagre, Daniel B.
Assessing the importance of terrain parameters on glide avalanche release
Glide snow avalanches are dangerous and difficult to predict. Despite recent research there is still a lack of understanding regarding the controls of glide avalanche release. Glide avalanches often occur in similar terrain or the same locations annually and observations suggest that topography may be critical. Thus, to gain an understanding of...Peitzsch, Erich H.; Hendrikx, Jordy; Fagre, Daniel B.
Protected area management
Designated protected areas are diverse in scope and purpose and have expanded from Yellowstone National Park in the United States, the world’s first national park, to 157,897 parks and protected areas distributed globally. Most are publicly owned and serve multiple needs that reflect regional or national cultures. With ever-increasing...Wang, Yeqiao; Fagre, Daniel B.; Prato, Tony
Climate change and the Rocky Mountains: Chapter 20
For at least half of the year, the Rocky Mountains are shrouded in snow that feeds a multitude of glaciers. Snow and ice eventually melt into rivers that have eroded deep valleys that contain rich aquatic and terrestrial ecosystems. Because the Rocky Mountains are the major divide on the continent, rainfall and melt water from glaciers and...Byrne, James M.; Fagre, Daniel B.; MacDonald, Ryan; Muhlfeld, Clint C.