Fossil floras from California, the Great Basin and the High Plains suggest a mild and warm semiarid climate characterized the western United States during Middle Pliocene time. This climate seems sufficiently d
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The continental-scale EarthScope program allows for the study of the lithosphere and upper mantle of the United States at details that have not been previously attainable. Broadband seismic observations from the Transportable Array component of USArray have illuminated features in the crust and upper ...
Thus, the enhancement of regional connectivity in the Yellowstone-Glacier and Mount Rainier-North Cascade networks could serve as an important template for not only the recent 30 × 30 initiative in the United States but landscape scale conservation in the 21st century in general. Methods A ...
A Precipitation Climatology and Dataset Intercomparison for the Western United States. J. Hydrometeorol. 9, 825–841 (2008). Article ADS Google Scholar Dettinger, M. D., Cayan, D. R., Diaz, H. F. & Meko, D. M. North–South Precipitation Patterns in Western North America on ...
The Porcupine Caribou Herd, which is shared by the United States and Canada, is the focus of an international agreement, in principle designed to assure its continued productivity and well-being. The diversity of systems for caribou management in the circumpolar North provides an opportunity for ...
Annual precipitation is already more variable year-to-year in California than anywhere else in the United States31,50. Climate projections show this variability increasing15,16,17,48, which is to be expected given the increasingly flashy precipitation regime, i.e. smaller sample size of storms pr...
Many other lake basins in western North America have a similar history. Humans occupied the extensive wetland habitats in the DPG delta area during this period, and the size and stability of the wetland ecosystem probably made it unnecessary for them to migrate long distances Acknowledgements We ...
“fair” within western North America (Fig.5b). These observed plumes characterize the years 2008–2011 and 2017–2018. Using bin widths of 250 m, we developed a histogram comparing these 480 observed plumes to the model-derived late morning plumes (corresponding to MISR overpass times) ...
Numerous agencies and organizations contributed field expertise, sampling, permit authorization, funding, and/or valuable comments: Arizona Game and Fish Department, Colorado Division of Wildlife, Jicarilla Apache Game and Fish, Nevada Department of Wildlife, United States Fish and Wildlife Service, ...