Helen Sofaer, PhD
Helen Sofaer is a Research Ecologist at the Pacific Island Ecosystems Research Center in Hawai‘i.
Science and Products
Filter Total Items: 25
Data used to estimate and project the effects of climate and land use change on wetland densities in the Prairie Pothole Region Data used to estimate and project the effects of climate and land use change on wetland densities in the Prairie Pothole Region
These data were used to estimate models relating climate and land cover to wetland densities and develop projections under climate and land use change. Data for model estimation were derived from historical climate data, estimates of hydrological processes based on the Variable Infiltration Capacity model, National Wetlands Inventory, and the National Land Cover Database. Wetland...
Filter Total Items: 44
Management foundations for navigating ecological transformation by resisting, accepting, or directing social-ecological change Management foundations for navigating ecological transformation by resisting, accepting, or directing social-ecological change
Despite striking global change, management to ensure healthy landscapes and sustained natural resources has tended to set objectives on the basis of the historical range of variability in stationary ecosystems. Many social–ecological systems are moving into novel conditions that can result in ecological transformation. We present four foundations to enable a transition to future-oriented
Authors
Dawn Magness, Linh Hoang, Travis Belote, Jean Brennan, Wylie Carr, F. Stuart Chapin, Katherine R. Clifford, Wendy Morrison, John Morton, Helen Sofaer
A science agenda to inform natural resource management decisions in an era of ecological transformation A science agenda to inform natural resource management decisions in an era of ecological transformation
Earth is experiencing widespread ecological transformation in terrestrial, freshwater, and marine ecosystems that is attributable to directional environmental changes, especially intensifying climate change. To better steward ecosystems facing unprecedented and lasting change, a new management paradigm is forming, supported by a decision-oriented framework that presents three distinct...
Authors
Shelley Crausbay, Helen Sofaer, Amanda E. Cravens, Brian C. Chaffin, Katherine R. Clifford, John E. Gross, Corrine N. Knapp, David J Lawrence, Dawn Magness, Abraham J. Miller-Rushing, Gregor W. Schuurman, Camille S. Stevens-Rumann
Modelling presence versus abundance for invasive species risk assessment Modelling presence versus abundance for invasive species risk assessment
Aim Invasive species prevention and management can be guided by comparisons of invasion risk across space and among species. Species distribution models are widely used to assess invasion risk and typically estimate suitability for species presence. However, suitability for presence may not capture patterns of abundance and impact. We asked how models estimating suitability for presence...
Authors
Catherine S. Jarnevich, Helen Sofaer, Peder Engelstad
Negative effects of an allelopathic invader on AM fungal plant species drive community‐level responses Negative effects of an allelopathic invader on AM fungal plant species drive community‐level responses
The mechanisms causing invasive species impact are rarely empirically tested, limiting our ability to understand and predict subsequent changes in invaded plant communities. Invader disruption of native mutualistic interactions is a mechanism expected to have negative effects on native plant species. Specifically, disruption of native plant‐fungal mutualisms may provide non‐mycorrhizal...
Authors
Morgan Roche, Ian S. Pearse, Lalasia Bialic-Murphy, Stephanie N Kivlin, Helen Sofaer, Susan Kalisz
Ecological forecasting—21st century science for 21st century management Ecological forecasting—21st century science for 21st century management
Natural resource managers are coping with rapid changes in both environmental conditions and ecosystems. Enabled by recent advances in data collection and assimilation, short-term ecological forecasting may be a powerful tool to help resource managers anticipate impending near-term changes in ecosystem conditions or dynamics. Managers may use the information in forecasts to minimize the...
Authors
John B. Bradford, Jake Weltzin, Molly L. McCormick, Jill Baron, Zack Bowen, Sky Bristol, Daren M. Carlisle, Theresa Crimmins, Paul C. Cross, Joe DeVivo, Mike Dietze, Mary Freeman, Jason Goldberg, Mevin Hooten, Leslie Hsu, Karen Jenni, Jennifer L. Keisman, Jonathan G. Kennen, Kathy Lee, David P. Lesmes, Keith A. Loftin, Brian W. Miller, Peter S. Murdoch, Jana Newman, Karen L. Prentice, Imtiaz Rangwala, Jordan Read, Jennifer Sieracki, Helen Sofaer, Steve Thur, Gordon Toevs, Francisco Werner, C. LeAnn White, Timothy White, Mark T. Wiltermuth
By
Ecosystems Mission Area, Water Resources Mission Area, Science Synthesis, Analysis, and Research Program, Contaminant Biology, Environmental Health Program, Science Analytics and Synthesis (SAS), Central Plains Water Science Center, Eastern Ecological Science Center, Fort Collins Science Center, Maryland-Delaware-D.C. Water Science Center, National Wildlife Health Center, New Jersey Water Science Center, Pacific Island Ecosystems Research Center, Southwest Biological Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center
A modeling workflow that balances automation and human intervention to inform invasive plant management decisions at multiple spatial scales A modeling workflow that balances automation and human intervention to inform invasive plant management decisions at multiple spatial scales
Predictions of habitat suitability for invasive plant species can guide risk assessments at regional and national scales and inform early detection and rapid-response strategies at local scales. We present a general approach to invasive species modeling and mapping that meets objectives at multiple scales. Our methodology is designed to balance trade-offs between developing highly...
Authors
Nicholas E. Young, Catherine S. Jarnevich, Helen Sofaer, Ian S. Pearse, Julia Sullivan, Peder Engelstad, Thomas J. Stohlgren
Science and Products
Filter Total Items: 25
Data used to estimate and project the effects of climate and land use change on wetland densities in the Prairie Pothole Region Data used to estimate and project the effects of climate and land use change on wetland densities in the Prairie Pothole Region
These data were used to estimate models relating climate and land cover to wetland densities and develop projections under climate and land use change. Data for model estimation were derived from historical climate data, estimates of hydrological processes based on the Variable Infiltration Capacity model, National Wetlands Inventory, and the National Land Cover Database. Wetland...
Filter Total Items: 44
Management foundations for navigating ecological transformation by resisting, accepting, or directing social-ecological change Management foundations for navigating ecological transformation by resisting, accepting, or directing social-ecological change
Despite striking global change, management to ensure healthy landscapes and sustained natural resources has tended to set objectives on the basis of the historical range of variability in stationary ecosystems. Many social–ecological systems are moving into novel conditions that can result in ecological transformation. We present four foundations to enable a transition to future-oriented
Authors
Dawn Magness, Linh Hoang, Travis Belote, Jean Brennan, Wylie Carr, F. Stuart Chapin, Katherine R. Clifford, Wendy Morrison, John Morton, Helen Sofaer
A science agenda to inform natural resource management decisions in an era of ecological transformation A science agenda to inform natural resource management decisions in an era of ecological transformation
Earth is experiencing widespread ecological transformation in terrestrial, freshwater, and marine ecosystems that is attributable to directional environmental changes, especially intensifying climate change. To better steward ecosystems facing unprecedented and lasting change, a new management paradigm is forming, supported by a decision-oriented framework that presents three distinct...
Authors
Shelley Crausbay, Helen Sofaer, Amanda E. Cravens, Brian C. Chaffin, Katherine R. Clifford, John E. Gross, Corrine N. Knapp, David J Lawrence, Dawn Magness, Abraham J. Miller-Rushing, Gregor W. Schuurman, Camille S. Stevens-Rumann
Modelling presence versus abundance for invasive species risk assessment Modelling presence versus abundance for invasive species risk assessment
Aim Invasive species prevention and management can be guided by comparisons of invasion risk across space and among species. Species distribution models are widely used to assess invasion risk and typically estimate suitability for species presence. However, suitability for presence may not capture patterns of abundance and impact. We asked how models estimating suitability for presence...
Authors
Catherine S. Jarnevich, Helen Sofaer, Peder Engelstad
Negative effects of an allelopathic invader on AM fungal plant species drive community‐level responses Negative effects of an allelopathic invader on AM fungal plant species drive community‐level responses
The mechanisms causing invasive species impact are rarely empirically tested, limiting our ability to understand and predict subsequent changes in invaded plant communities. Invader disruption of native mutualistic interactions is a mechanism expected to have negative effects on native plant species. Specifically, disruption of native plant‐fungal mutualisms may provide non‐mycorrhizal...
Authors
Morgan Roche, Ian S. Pearse, Lalasia Bialic-Murphy, Stephanie N Kivlin, Helen Sofaer, Susan Kalisz
Ecological forecasting—21st century science for 21st century management Ecological forecasting—21st century science for 21st century management
Natural resource managers are coping with rapid changes in both environmental conditions and ecosystems. Enabled by recent advances in data collection and assimilation, short-term ecological forecasting may be a powerful tool to help resource managers anticipate impending near-term changes in ecosystem conditions or dynamics. Managers may use the information in forecasts to minimize the...
Authors
John B. Bradford, Jake Weltzin, Molly L. McCormick, Jill Baron, Zack Bowen, Sky Bristol, Daren M. Carlisle, Theresa Crimmins, Paul C. Cross, Joe DeVivo, Mike Dietze, Mary Freeman, Jason Goldberg, Mevin Hooten, Leslie Hsu, Karen Jenni, Jennifer L. Keisman, Jonathan G. Kennen, Kathy Lee, David P. Lesmes, Keith A. Loftin, Brian W. Miller, Peter S. Murdoch, Jana Newman, Karen L. Prentice, Imtiaz Rangwala, Jordan Read, Jennifer Sieracki, Helen Sofaer, Steve Thur, Gordon Toevs, Francisco Werner, C. LeAnn White, Timothy White, Mark T. Wiltermuth
By
Ecosystems Mission Area, Water Resources Mission Area, Science Synthesis, Analysis, and Research Program, Contaminant Biology, Environmental Health Program, Science Analytics and Synthesis (SAS), Central Plains Water Science Center, Eastern Ecological Science Center, Fort Collins Science Center, Maryland-Delaware-D.C. Water Science Center, National Wildlife Health Center, New Jersey Water Science Center, Pacific Island Ecosystems Research Center, Southwest Biological Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center
A modeling workflow that balances automation and human intervention to inform invasive plant management decisions at multiple spatial scales A modeling workflow that balances automation and human intervention to inform invasive plant management decisions at multiple spatial scales
Predictions of habitat suitability for invasive plant species can guide risk assessments at regional and national scales and inform early detection and rapid-response strategies at local scales. We present a general approach to invasive species modeling and mapping that meets objectives at multiple scales. Our methodology is designed to balance trade-offs between developing highly...
Authors
Nicholas E. Young, Catherine S. Jarnevich, Helen Sofaer, Ian S. Pearse, Julia Sullivan, Peder Engelstad, Thomas J. Stohlgren