Sarah Shafer (Former Employee)
Science and Products
Filter Total Items: 37
Projected climate impacts for the amphibians of the western hemisphere Projected climate impacts for the amphibians of the western hemisphere
Given their physiological requirements, limited dispersal abilities, and hydrologically sensitive habitats, amphibians are likely to be highly sensitive to future climatic changes. We used three approaches to map areas in the western hemisphere where amphibians are particularly likely to be affected by climate change. First, we used bioclimatic models to project potential climate-driven...
Authors
Joshua J. Lawler, Sarah L. Shafer, Betsy A. Bancroft, Andrew R. Blaustein
U.S. Geological Survey Science Strategy for the Wyoming Landscape Conservation Initiative U.S. Geological Survey Science Strategy for the Wyoming Landscape Conservation Initiative
Southwest Wyoming's wildlife and habitat resources are increasingly affected by energy and urban/exurban development, climate change, and other key drivers of ecosystem change. To ensure that southwest Wyoming's wildlife populations and habitats persist in the face of development and other changes, a consortium of public resource-management agencies proposed the Wyoming Landscape...
Authors
Zachary H. Bowen, Cameron L. Aldridge, Patrick J. Anderson, Geneva W. Chong, Mark A. Drummond, Collin G. Homer, Ronald C. Johnson, Matthew J. Kauffman, Steven T. Knick, John J. Kosovich, Kirk A. Miller, Tom Owens, Sarah L. Shafer, Michael J. Sweat
Projected climate-induced faunal change in the Western Hemisphere Projected climate-induced faunal change in the Western Hemisphere
Climate change is predicted to be one of the greatest drivers of ecological change in the coming century. Increases in temperature over the last century have clearly been linked to shifts in species distributions. Given the magnitude of projected future climatic changes, we can expect even larger range shifts in the coming century. These changes will, in turn, alter ecological...
Authors
J.J. Lawler, S.L. Shafer, D. White, P. Kareiva, E.P. Maurer, A.R. Blaustein, P. J. Bartlein
Effects of experimental protocol on global vegetation model accuracy: a comparison of simulated and observed vegetation patterns for Asia Effects of experimental protocol on global vegetation model accuracy: a comparison of simulated and observed vegetation patterns for Asia
Prognostic vegetation models have been widely used to study the interactions between environmental change and biological systems. This study examines the sensitivity of vegetation model simulations to: (i) the selection of input climatologies representing different time periods and their associated atmospheric CO2 concentrations, (ii) the choice of observed vegetation data for evaluating...
Authors
Guoping Tang, Sarah L. Shafer, Patrick J. Barlein, Justin O. Holman
Temporal and spatial structure in a daily wildfire-start data set from the western United States (198696) Temporal and spatial structure in a daily wildfire-start data set from the western United States (198696)
The temporal and spatial structure of 332 404 daily fire-start records from the western United States for the period 1986 through 1996 is illustrated using several complimentary visualisation techniques. We supplement maps and time series plots with Hovmo??ller diagrams that reduce the spatial dimensionality of the daily data in order to reveal the underlying space?time structure. The...
Authors
P. J. Bartlein, S. W. Hostetler, S.L. Shafer, J.O. Holman, A.M. Solomon
Atlas of relations between climatic parameters and distributions of important trees and shrubs in North America: Ecoregions of North America Atlas of relations between climatic parameters and distributions of important trees and shrubs in North America: Ecoregions of North America
Climate is the primary factor controlling the continental-scale distribution of plant species, although the relations between climatic parameters and species' ranges are only now beginning to be quantified. This volume examines the relations between climate and the distributions of (1) Kuchler's 'potential natural vegetation' categories for the 48 contiguous States of the United States...
Authors
Robert S. Thompson, Katherine H. Anderson, Richard T. Pelltier, Sarah L. Shafer, Patrick J. Bartlein
Science and Products
Filter Total Items: 37
Projected climate impacts for the amphibians of the western hemisphere Projected climate impacts for the amphibians of the western hemisphere
Given their physiological requirements, limited dispersal abilities, and hydrologically sensitive habitats, amphibians are likely to be highly sensitive to future climatic changes. We used three approaches to map areas in the western hemisphere where amphibians are particularly likely to be affected by climate change. First, we used bioclimatic models to project potential climate-driven...
Authors
Joshua J. Lawler, Sarah L. Shafer, Betsy A. Bancroft, Andrew R. Blaustein
U.S. Geological Survey Science Strategy for the Wyoming Landscape Conservation Initiative U.S. Geological Survey Science Strategy for the Wyoming Landscape Conservation Initiative
Southwest Wyoming's wildlife and habitat resources are increasingly affected by energy and urban/exurban development, climate change, and other key drivers of ecosystem change. To ensure that southwest Wyoming's wildlife populations and habitats persist in the face of development and other changes, a consortium of public resource-management agencies proposed the Wyoming Landscape...
Authors
Zachary H. Bowen, Cameron L. Aldridge, Patrick J. Anderson, Geneva W. Chong, Mark A. Drummond, Collin G. Homer, Ronald C. Johnson, Matthew J. Kauffman, Steven T. Knick, John J. Kosovich, Kirk A. Miller, Tom Owens, Sarah L. Shafer, Michael J. Sweat
Projected climate-induced faunal change in the Western Hemisphere Projected climate-induced faunal change in the Western Hemisphere
Climate change is predicted to be one of the greatest drivers of ecological change in the coming century. Increases in temperature over the last century have clearly been linked to shifts in species distributions. Given the magnitude of projected future climatic changes, we can expect even larger range shifts in the coming century. These changes will, in turn, alter ecological...
Authors
J.J. Lawler, S.L. Shafer, D. White, P. Kareiva, E.P. Maurer, A.R. Blaustein, P. J. Bartlein
Effects of experimental protocol on global vegetation model accuracy: a comparison of simulated and observed vegetation patterns for Asia Effects of experimental protocol on global vegetation model accuracy: a comparison of simulated and observed vegetation patterns for Asia
Prognostic vegetation models have been widely used to study the interactions between environmental change and biological systems. This study examines the sensitivity of vegetation model simulations to: (i) the selection of input climatologies representing different time periods and their associated atmospheric CO2 concentrations, (ii) the choice of observed vegetation data for evaluating...
Authors
Guoping Tang, Sarah L. Shafer, Patrick J. Barlein, Justin O. Holman
Temporal and spatial structure in a daily wildfire-start data set from the western United States (198696) Temporal and spatial structure in a daily wildfire-start data set from the western United States (198696)
The temporal and spatial structure of 332 404 daily fire-start records from the western United States for the period 1986 through 1996 is illustrated using several complimentary visualisation techniques. We supplement maps and time series plots with Hovmo??ller diagrams that reduce the spatial dimensionality of the daily data in order to reveal the underlying space?time structure. The...
Authors
P. J. Bartlein, S. W. Hostetler, S.L. Shafer, J.O. Holman, A.M. Solomon
Atlas of relations between climatic parameters and distributions of important trees and shrubs in North America: Ecoregions of North America Atlas of relations between climatic parameters and distributions of important trees and shrubs in North America: Ecoregions of North America
Climate is the primary factor controlling the continental-scale distribution of plant species, although the relations between climatic parameters and species' ranges are only now beginning to be quantified. This volume examines the relations between climate and the distributions of (1) Kuchler's 'potential natural vegetation' categories for the 48 contiguous States of the United States...
Authors
Robert S. Thompson, Katherine H. Anderson, Richard T. Pelltier, Sarah L. Shafer, Patrick J. Bartlein