Mary Freeman, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 110
Multispecies approaches to status assessments in support of endangered species classifications Multispecies approaches to status assessments in support of endangered species classifications
Multispecies risk assessments have developed within many international conservation programs, reflecting a widespread need for efficiency. Under the United States Endangered Species Act (ESA), multispecies assessments ultimately lead to species-level listing decisions. Although this approach provides opportunities for improved efficiency, it also risks overwhelming or biasing the...
Authors
Daniel Bruce Fitzgerald, Mary Freeman, Kelly O. Maloney, John A. Young, Amanda E. Rosenberger, David C. Kazyak, David R. Smith
Toward improved prediction of streamflow effects on freshwater fishes Toward improved prediction of streamflow effects on freshwater fishes
Understanding the effects of hydrology on fish populations is essential to managing for native fish conservation. However, despite decades of research illustrating streamflow influences on fish habitat, reproduction and survival, biologists remain challenged when tasked with predicting how fish populations will respond to changes in flow regimes. This uncertainty stems from insufficient
Authors
Mary Freeman, Kevin R. Bestgen, Daren M. Carlisle, Emmanuel A. Frimpong, Nathan R. Franssen, Ketih B. Gido, Elise R. Irwin, Yoichiro Kanno, Charles H. Luce, S. Kyle McKay, Meryl C. Mims, Julian D. Olden, N. LeRoy Poff, David L. Propst, Laura Rack, Allison H. Roy, Edward S. Stowe, Annika W. Walters, Seth J. Wenger
Effects of stream intermittency on minnow (Leuciscidae) and darter (Percidae) trophic dynamics in an agricultural watershed Effects of stream intermittency on minnow (Leuciscidae) and darter (Percidae) trophic dynamics in an agricultural watershed
Stream intermittency is predicted to increase where water withdrawals and climate warming are increasing. In regions coupled with high fish diversity, understanding how intermittency influences fish trophic ecology is critical for informing ecosystem function. This study compared fish diets across seasons in perennial and intermittent streams to estimate the immediate and cumulative...
Authors
Christine E. Fallon, Krista A. Capps, Mary Freeman, Chelsea R. Smith, Stephen W. Golladay
Evaluating the impact of watershed development and climate change on stream ecosystems: A Bayesian network modeling approach Evaluating the impact of watershed development and climate change on stream ecosystems: A Bayesian network modeling approach
A continuous-variable Bayesian network (cBN) model is used to link watershed development and climate change to stream ecosystem indicators. A graphical model, reflecting our understanding of the connections between climate change, weather condition, loss of natural land cover, stream flow characteristics, and stream ecosystem indicators is used as the basis for selecting flow metrics for
Authors
Song S. Qian, Jonathan G. Kennen, Jason May, Mary Freeman, Thomas F Cuffney
Do crayfish affect stream ecosystem response to riparian vegetation removal? Do crayfish affect stream ecosystem response to riparian vegetation removal?
1. Riparian vegetation management alters stream basal resources, but stream ecosystem responses partly depend on top-down interactions with in-stream consumers. Large-bodied omnivores can exert particularly strong influences on stream benthic environments through consumption of food resources and physical disturbance of the benthos. Trophic dynamics studies conducted within the context...
Authors
Maura P. Dudley, Kelsey Solomon, Seth J. Wenger, C. Rhett Jackson, Mary Freeman, Katherine J. Elliott, Chelcy F. Miniat, Catherine M. Pringle
Integrating tracking and resight data enables unbiased inferences about migratory connectivity and winter range survival from archival tags Integrating tracking and resight data enables unbiased inferences about migratory connectivity and winter range survival from archival tags
Archival geolocators have transformed the study of small, migratory organisms but analysis of data from these devices requires bias correction because tags are only recovered from individuals that survive and are re-captured at their tagging location. We show that integrating geolocator recovery data and mark–resight data enables unbiased estimates of both migratory connectivity between...
Authors
Clark S Rushing, Aimee M Van Tatenhove, Andrew Sharp, Viviana Ruiz-Gutierrez, Mary Freeman, Paul W. Sykes, Aaron M. Given, T. Scott Sillett
Science and Products
Filter Total Items: 110
Multispecies approaches to status assessments in support of endangered species classifications Multispecies approaches to status assessments in support of endangered species classifications
Multispecies risk assessments have developed within many international conservation programs, reflecting a widespread need for efficiency. Under the United States Endangered Species Act (ESA), multispecies assessments ultimately lead to species-level listing decisions. Although this approach provides opportunities for improved efficiency, it also risks overwhelming or biasing the...
Authors
Daniel Bruce Fitzgerald, Mary Freeman, Kelly O. Maloney, John A. Young, Amanda E. Rosenberger, David C. Kazyak, David R. Smith
Toward improved prediction of streamflow effects on freshwater fishes Toward improved prediction of streamflow effects on freshwater fishes
Understanding the effects of hydrology on fish populations is essential to managing for native fish conservation. However, despite decades of research illustrating streamflow influences on fish habitat, reproduction and survival, biologists remain challenged when tasked with predicting how fish populations will respond to changes in flow regimes. This uncertainty stems from insufficient
Authors
Mary Freeman, Kevin R. Bestgen, Daren M. Carlisle, Emmanuel A. Frimpong, Nathan R. Franssen, Ketih B. Gido, Elise R. Irwin, Yoichiro Kanno, Charles H. Luce, S. Kyle McKay, Meryl C. Mims, Julian D. Olden, N. LeRoy Poff, David L. Propst, Laura Rack, Allison H. Roy, Edward S. Stowe, Annika W. Walters, Seth J. Wenger
Effects of stream intermittency on minnow (Leuciscidae) and darter (Percidae) trophic dynamics in an agricultural watershed Effects of stream intermittency on minnow (Leuciscidae) and darter (Percidae) trophic dynamics in an agricultural watershed
Stream intermittency is predicted to increase where water withdrawals and climate warming are increasing. In regions coupled with high fish diversity, understanding how intermittency influences fish trophic ecology is critical for informing ecosystem function. This study compared fish diets across seasons in perennial and intermittent streams to estimate the immediate and cumulative...
Authors
Christine E. Fallon, Krista A. Capps, Mary Freeman, Chelsea R. Smith, Stephen W. Golladay
Evaluating the impact of watershed development and climate change on stream ecosystems: A Bayesian network modeling approach Evaluating the impact of watershed development and climate change on stream ecosystems: A Bayesian network modeling approach
A continuous-variable Bayesian network (cBN) model is used to link watershed development and climate change to stream ecosystem indicators. A graphical model, reflecting our understanding of the connections between climate change, weather condition, loss of natural land cover, stream flow characteristics, and stream ecosystem indicators is used as the basis for selecting flow metrics for
Authors
Song S. Qian, Jonathan G. Kennen, Jason May, Mary Freeman, Thomas F Cuffney
Do crayfish affect stream ecosystem response to riparian vegetation removal? Do crayfish affect stream ecosystem response to riparian vegetation removal?
1. Riparian vegetation management alters stream basal resources, but stream ecosystem responses partly depend on top-down interactions with in-stream consumers. Large-bodied omnivores can exert particularly strong influences on stream benthic environments through consumption of food resources and physical disturbance of the benthos. Trophic dynamics studies conducted within the context...
Authors
Maura P. Dudley, Kelsey Solomon, Seth J. Wenger, C. Rhett Jackson, Mary Freeman, Katherine J. Elliott, Chelcy F. Miniat, Catherine M. Pringle
Integrating tracking and resight data enables unbiased inferences about migratory connectivity and winter range survival from archival tags Integrating tracking and resight data enables unbiased inferences about migratory connectivity and winter range survival from archival tags
Archival geolocators have transformed the study of small, migratory organisms but analysis of data from these devices requires bias correction because tags are only recovered from individuals that survive and are re-captured at their tagging location. We show that integrating geolocator recovery data and mark–resight data enables unbiased estimates of both migratory connectivity between...
Authors
Clark S Rushing, Aimee M Van Tatenhove, Andrew Sharp, Viviana Ruiz-Gutierrez, Mary Freeman, Paul W. Sykes, Aaron M. Given, T. Scott Sillett