Daniel B. Fagre

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*Corresponding author: U.S. Geological Survey Northern Rocky Mountain Science Center, Global Change Program, Science Center, Glacier National Park, West Glacier, Montana 59936, U.S.A. blase.reardon@gmail.com {Big Sky Institute, 106 AJM Johnson Hall, Montana State University, Bozeman, Montana 59717, U.S.A. {U.S. Geological Survey Science Center, West Glacier(More)
In western North America, snowpack has declined in recent decades, and further losses are projected through the 21st century. Here, we evaluate the uniqueness of recent declines using snowpack reconstructions from 66 tree-ring chronologies in key runoff-generating areas of the Colorado, Columbia, and Missouri River drainages. Over the past millennium, late(More)
An integrated program of ecosystem modeling and field studies in the mountains of the Pacific Northwest (U.S.A.) has quantified many of the ecological processes affected by climatic variability. Paleoecological and contemporary ecological data in forest ecosystems provided model parameterization and validation at broad spatial and temporal scales for tree(More)
Instrumental climate records suggest that summer precipitation and winter snowpack in Glacier National Park (Glacier NP), Montana, vary significantly over decadal to multidecadal time scales. Because instrumental records for the region are limited to the twentieth century, knowledge * Corresponding author address: Gregory T. Pederson, Big Sky Institute,(More)
Repeat photography is a powerful tool for detection of landscape change over decadal timescales. Here a novel method is presented that applies spatial analysis software to digital photo-pairs, allowing vegetation change to be categorized and quantified. This method is applied to 12 sites within the alpine treeline ecotone of Glacier National Park, Montana,(More)
Many snakes discharge malodorous fluids from paired scent glands in the base of the tail when they are disturbed. A number of authors suggest that these secretions repel predators. Scent gland secretions of the western diamondback rattlesnake (Crotalus atrox), or dichloromethane extracts of them, were presented to coyotes (Canis latrans) in three field(More)
[1] Little Ice Age (14th–19th centuries A.D.) glacial maxima and 20th century retreat have been well documented in Glacier National Park, Montana, USA. However, the influence of regional and Pacific Basin driven climate variability on these events is poorly understood. We use tree-ring reconstructions of North Pacific surface temperature anomalies and(More)
*School of Natural Resources and Environment, University of Michigan, 430 E. University Avenue, Ann Arbor, Michigan 48109-1115, U.S.A. Corresponding author present address: Institute for Fisheries Research, University of Michigan, 212 Museums Annex Bldg., Ann Arbor, Michigan 48109-1084, U.S.A. cgeddes@umich.edu School of Natural Resources and Environment,(More)
A framework to monitor mountain summit vegetation (The Global Observation Research Initiative in Alpine Environments, GLORIA) was initiated in 1997. GLORIA results should be taken within a regional context of the spatial variability of alpine tundra. Changes observed at GLORIA sites in Glacier National Park, Montana, USA are quantified within the context of(More)