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Allison Roy, PhD

Assistant Unit Leader - Massachusetts Cooperative Fish and Wildlife Research Unit

Research Interests

Allison's research broadly revolves around characterizing anthropogenic impacts on aquatic ecosystems and identifying conservation strategies for effectively protecting and restoring watersheds. The growing human population continues to constrain biotic assemblages in a variety of ways, and understanding the mechanisms by which urbanization and its associated stressors result in degraded fish assemblages is an overarching challenge of her research program. She is interested in examining effects of altered hydrology, temperature, habitat, water quality, and food resources on stream fishes; quantifying sublethal (e.g., behavior, physiology) responses of fishes to urbanization; and assessing potential for management (e.g., forested riparian buffers, green infrastructure, dam removal) to restore fish assemblages.

Teaching Interests

At the University of Massachusetts Amherst, Allison teaches Research Concepts for first-year graduate students and Aquatic Ecology for advanced undergraduate and graduate students. In the past, she has taught graduate classes in Stream Ecology and Watershed Theory & Management, and undergraduate classes in the areas of Ecology, Conservation Biology, and Environmental Science.

Professional Experience

  • Unit Leader, Massachusetts Cooperative Fish and Wildlife Research Unit, 2020-

  • Assistant Unit Leader, Massachusetts Cooperative Fish and Wildlife Research Unit, 2012-2019

Education and Certifications

  • Ph D The University of Georgia 2004

  • MS The University of Georgia 2000

  • BS Allegheny College 1998

Science and Products

link
Farmington River in Collinsville, Connecticut

Framework for Protecting Aquatic Biodiversity in the Northeast Under Changing Climates

Aquatic ecosystems provide habitat and migration corridors to a myriad of species, including plants, fishes, amphibians, birds, mammals, and insects. These ecosystems typically contain relatively higher biodiversity than their terrestrial counterparts; yet, aquatic biodiversity loss in North America is occurring at a rate five times faster than in terrestrial ecosystems. One of the major causes of
By
Climate Adaptation Science Centers
link

Framework for Protecting Aquatic Biodiversity in the Northeast Under Changing Climates

Aquatic ecosystems provide habitat and migration corridors to a myriad of species, including plants, fishes, amphibians, birds, mammals, and insects. These ecosystems typically contain relatively higher biodiversity than their terrestrial counterparts; yet, aquatic biodiversity loss in North America is occurring at a rate five times faster than in terrestrial ecosystems. One of the major causes of
Learn More
link
ocean and beach

Increasing Tribal Climate Adaptive Capacity for Coastal Resources in the Northeast

Fish that migrate between fresh and salt waters, called diadromous fishes, are integral to coastal Tribal cultures as subsistence foods. Throughout their Northeast range, diadromous fish populations have shown strong declines over recent decades due to the combined impacts of habitat loss, pollution, overfishing, and climate change. These changes have led to decreasing access to traditional subsis
By
Climate Adaptation Science Centers
link

Increasing Tribal Climate Adaptive Capacity for Coastal Resources in the Northeast

Fish that migrate between fresh and salt waters, called diadromous fishes, are integral to coastal Tribal cultures as subsistence foods. Throughout their Northeast range, diadromous fish populations have shown strong declines over recent decades due to the combined impacts of habitat loss, pollution, overfishing, and climate change. These changes have led to decreasing access to traditional subsis
Learn More
link
Clear blue lake with green trees in the background and blue sky with clouds reflected in the water

Rethinking Lake Management for Invasive Plants Under Future Climate: Sensitivity of Lake Ecosystems to Winter Water Level Drawdowns

Small lakes are important to local economies as sources of water supply and places of recreation. Commonly, lakes are considered more desirable for recreation if they are free of the thick weedy vegetation, often comprised of invasive species, that grows around the lake edge. This vegetation makes it difficult to launch boats and swim. In order to reduce this vegetation, a common technique in the
By
Climate Adaptation Science Centers
link

Rethinking Lake Management for Invasive Plants Under Future Climate: Sensitivity of Lake Ecosystems to Winter Water Level Drawdowns

Small lakes are important to local economies as sources of water supply and places of recreation. Commonly, lakes are considered more desirable for recreation if they are free of the thick weedy vegetation, often comprised of invasive species, that grows around the lake edge. This vegetation makes it difficult to launch boats and swim. In order to reduce this vegetation, a common technique in the
Learn More
link
Ghost Forest at Blackwater National Wildlife Refuge

Projecting the Future of Headwater Streams to Inform Management Decisions

There is growing evidence that headwater stream ecosystems are especially vulnerable to changing climate and land use, but managers are challenged by the need to address these threats at a landscape scale, often through coordination with multiple management agencies and landowners. This project sought to provide an example of cooperative landscape decision-making by addressing the conservation of
By
Climate Adaptation Science Centers
link

Projecting the Future of Headwater Streams to Inform Management Decisions

There is growing evidence that headwater stream ecosystems are especially vulnerable to changing climate and land use, but managers are challenged by the need to address these threats at a landscape scale, often through coordination with multiple management agencies and landowners. This project sought to provide an example of cooperative landscape decision-making by addressing the conservation of
Learn More

A Remote Sensing Approach to Characterize Winter Water Level Drawdown Patterns in Lakes

This data release consists of four datasets that were used for evaluating winter drawdown patterns in 166 Massachusetts lakes greater than 0.3 km2 surface area. The first dataset (“Water area and level.csv”) provides water area and water level time series data of 166 lakes from 2016 to 2021. Water area and water level time-series data were derived from European Space Agency’s Sentinel 1 synthetic
By
Climate Adaptation Science Centers

Data used to test a video monitoring and computational system for estimating juvenile fish abundance

We developed and tested neural network-based models to recognize and count emigrating juvenile river herring in continuous video. Continuous video was collected from an underwater camera installed at Great Herring Pond in Bourne, Massachusetts (USA) between June and November 2017. Our algorithm extracts video frames to assess presence/absence of fish and count numbers of fish emigrating. We used e
By
Cooperative Research Units

Developing a Stochastic Hydrological Model for Informing Lake Water Level Drawdown Management

This data release consists of four datasets which were used for evaluating winter drawdown (WD) lakes to follow the Massachusetts general WD guidelines. The first dataset ("Water level observations.csv") provides water level monitoring data of 21 (18 WD and 3 non-WD) recreational lakes in Massachusetts from 2014 to 2018. The water levels were measured by paired nonvented pressure transducers (HOBO
By
Climate Adaptation Science Centers

Stream Temperature and Dissolved Oxygen Responses to Small Dams and Dam Removal in Massachusetts

Small, surface-release dams are ubiquitous across the U.S. and have the potential to alter stream flow, impede sediment and nutrient transport, and fragment biotic assemblages. To mitigate these and other ecological impacts and reduce public safety hazards, dam removal has become an increasingly prevalent method of stream restoration. However, few streams have been consistently monitored before an
By
Cooperative Research Units

In-vitro Propagation and Fish Assessments to Inform Restoration of Dwarf Wedgemussel (Alasmidonta Heterodon)

The dwarf wedgemussel (Alasmidonta heterodon) is a federally endangered freshwater mussel that once ranged from New Brunswick to North Carolina, but now only exists in isolated populations throughout its diminished range. Laboratory propagation in conjunction with augmentation or reintroduction is considered a critical component of dwarf wedgemussel restoration. The presented data aimed to I) deve
By
Cooperative Research Units
Filter Total Items: 37

Population density and zooplankton biomass influence anadromous juvenile river herring growth in freshwater lakes

Anadromous river herring populations, collectively alewife (Alosa pseudoharengus) and blueback herring (Alosa aestivalis), have experienced a multi-century decline in abundance and distribution. These declines have been attributed in part to anthropogenic threats in freshwater ecosystems (e.g., habitat fragmentation, overharvest, water pollution, watershed development). An understanding of variabi
Authors
Matthew T. Devine, Steven Bittner, Allison H. Roy, Benjamin I. Gahagan, Michael P. Armstrong, Adrian Jordaan
By
Cooperative Research Units

A video monitoring and computational system for estimating migratory juvenile fish abundance in river systems

Diadromous fishes migrate between marine and fresh waters for reproduction. For anadromous species, which spawn in freshwater, improved access to freshwater spawning and nursery habitats and ability of juveniles to emigrate to the ocean may support population recovery. Despite the potentially enormous influence of early life stage survival on adult population size, managers and scientists have lim
Authors
Meghna N. Marjadi, Sidney Batchelder, Ryan Govostes, Allison H. Roy, John J. Sheppard, Meghan-Grace Slocombe, Joel K. Llopiz
By
Cooperative Research Units

Food, water quality, and the growth of a freshwater mussel: Implications for population restoration

Unknown causes behind the loss of freshwater mussel populations have prompted population restoration as a tool to recover these imperiled species. However, water quality conditions that support mussel species within natural environments and potential causes of water quality impairment in systems with declining populations are typically unknown and may be critical knowledge needed before reintroduc
Authors
Ayla J. Skorupa, Allison H. Roy, Peter D. Hazelton, David Perkins, Timothy Timothy Warren, Brian S. Cheng
By
Cooperative Research Units

Metagenomic sequencing sheds light on microbes putatively associated with pneumonia-related fatalities of white-tailed deer (Odocoileus virginianus)

With emerging infectious disease outbreaks in human, domestic and wild animal populations on the rise, improvements in pathogen characterization and surveillance are paramount for the protection of human and animal health, as well as the conservation of ecologically and economically important wildlife. Genomics offers a range of suitable tools to meet these goals, with metagenomic sequencing facil
Authors
Melanie B. Prentice, Marie L.J. Gilbertson, Daniel J. Storm, Allison H. Roy, Daniel P. Walsh, Marie E. Pinkerton, Pauline L. Kamath
By
Ecosystems Mission Area, Cooperative Research Units, National Wildlife Health Center

A multi-sensor approach to characterize winter water-level drawdown patterns in lakes

Artificial manipulation of lake water levels through practices like winter water-level drawdown (WD) is prevalent across many regions, but the spatiotemporal patterns are not well documented due to limited in situ monitoring. Multi-sensor satellite remote sensing provides an opportunity to map and analyze drawdown frequency and metrics (timing, magnitude, duration) at broad scales. This study deve
Authors
Abhishek Kumar, Allison H. Roy, Konstantinos Andreadis, Xinchen He, Caitlyn Butler
By
Cooperative Research Units

Abundance of five sympatric stream dwelling mussels varies with physical habitat

Freshwater mussel species regularly co-occur in streams forming assemblages, but the extent of shared versus unique instream habitat features that contribute to their distribution and abundance is poorly understood. In Massachusetts, a rare species, Alasmidonta varicosa, is often found with four other species: Alasmidonta undulata, Strophitus undulatus, Margaritifera margaritifera, and Elliptio co
Authors
Ayla J. Skorupa, Allison H. Roy, Peter D. Hazelton, David Perkins, Timothy Warren, Andy Fisk
By
Cooperative Research Units

LakeLevel tracker: A Google Earth engine-based web application for characterizing lake water levels

No abstract available.
Authors
Abhishek Kumar, Allison H. Roy, Konstantinos Andreadis, Xinchen He, Caitlyn Butler
By
Cooperative Research Units

Developing a stochastic hydrological model for informing lake water level drawdown management

Winter drawdown (WD) is a common lake management tool for multiple purposes such as flood control, aquatic vegetation reduction, and lake infrastructure maintenance. To minimize adverse impacts to a lake’s ecosystem, regulatory agencies may provide managers with general guidelines for drawdown and refill timing, drawdown magnitude, and outflow limitations. However, there is significant uncertainty
Authors
Xinchen He, Konstantinos Andreadisa, Allison H. Roy, Abhiskek Kumar, Caitlyn Butler
By
Cooperative Research Units

Watershed selection to support freshwater mussel restoration: An open-loop decision guide

No abstract available.
Authors
Ayla J. Skorupa, David Perkins, Allison H. Roy, Jennifer E. Ryan
By
Cooperative Research Units

Urbanization and stream ecology: Moving the bar on multidisciplinary solutions to wicked urban stream problems

Decades of research on the effects of urbanization on stream ecology have shown that urban stream problems are inherently wicked. These problems are wicked in the sense that they are difficult to solve because information is incomplete, changing, or conflicting and because finding potential solutions often requires input from stakeholders who can have conflicting and competing values. The 5th Symp
Authors
Megan L. Fork, Kristina G. Hopkins, Jessica Chappell, Robert J. Hawley, Sujay S. Kaushal, Brian M. Murphy, Blanca Ríos-Touma, Allison H. Roy
By
Water Resources Mission Area, Cooperative Research Units, South Atlantic Water Science Center (SAWSC)

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 understand
Authors
Mary Freeman, Kevin R. Bestgen, Daren 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
By
Cooperative Research Units, Eastern Ecological Science Center

Homeowners’ willingness to adopt environmentally beneficial landscape practices in an urbanizing watershed

Streams in urbanizing watersheds often experience low flows in summer due to increased water use for residential landscaping and decreased base flow as impervious land cover limits aquifer recharge. Environmentally beneficial landscape practices that save water and infiltrate runoff have the potential to provide multiple ecological benefits including reducing stress on urban streams, but can face
Authors
Johanna Stacy, Robert L. Ryan, Allison H. Roy, Anita Milman
By
Cooperative Research Units

A Long Short Term Memory model for predicting daily lake ice cover changes in the Northern Hemisphere

This software release includes the python scripts and jupyter notebooks of collecting remote-sensed lake ice cover data, training & validating a lake ice model and visualizing the model output.
By
Cooperative Research Units

Winter Drawdown

The Google Earth Engine (GEE) code was written in JavaScript which can derive water area and water level time series data of multiple lakes for specified date range. Data derived from GEE code were used in classifying winter drawdown lakes and to derive winter drawdown metrics (using python code in Jupyter Notebook) in our submitted manuscript to the Journal of Environmental Management. We also tr
By
Cooperative Research Units

A hydrological modeling framework for lake water level drawdown management

This model was written in python3 which can simulate water level fluctuations under different drawdown operation rules. We submitted the manuscript about this model to the Journal of Environmental Management. The model file was saved in directory “models/WDLake”, and you can reproduce the results by running the jupyter notebooks in “notebooks/”.
By
Cooperative Research Units

Science and Products

link
Farmington River in Collinsville, Connecticut

Framework for Protecting Aquatic Biodiversity in the Northeast Under Changing Climates

Aquatic ecosystems provide habitat and migration corridors to a myriad of species, including plants, fishes, amphibians, birds, mammals, and insects. These ecosystems typically contain relatively higher biodiversity than their terrestrial counterparts; yet, aquatic biodiversity loss in North America is occurring at a rate five times faster than in terrestrial ecosystems. One of the major causes of
By
Climate Adaptation Science Centers
link

Framework for Protecting Aquatic Biodiversity in the Northeast Under Changing Climates

Aquatic ecosystems provide habitat and migration corridors to a myriad of species, including plants, fishes, amphibians, birds, mammals, and insects. These ecosystems typically contain relatively higher biodiversity than their terrestrial counterparts; yet, aquatic biodiversity loss in North America is occurring at a rate five times faster than in terrestrial ecosystems. One of the major causes of
Learn More
link
ocean and beach

Increasing Tribal Climate Adaptive Capacity for Coastal Resources in the Northeast

Fish that migrate between fresh and salt waters, called diadromous fishes, are integral to coastal Tribal cultures as subsistence foods. Throughout their Northeast range, diadromous fish populations have shown strong declines over recent decades due to the combined impacts of habitat loss, pollution, overfishing, and climate change. These changes have led to decreasing access to traditional subsis
By
Climate Adaptation Science Centers
link

Increasing Tribal Climate Adaptive Capacity for Coastal Resources in the Northeast

Fish that migrate between fresh and salt waters, called diadromous fishes, are integral to coastal Tribal cultures as subsistence foods. Throughout their Northeast range, diadromous fish populations have shown strong declines over recent decades due to the combined impacts of habitat loss, pollution, overfishing, and climate change. These changes have led to decreasing access to traditional subsis
Learn More
link
Clear blue lake with green trees in the background and blue sky with clouds reflected in the water

Rethinking Lake Management for Invasive Plants Under Future Climate: Sensitivity of Lake Ecosystems to Winter Water Level Drawdowns

Small lakes are important to local economies as sources of water supply and places of recreation. Commonly, lakes are considered more desirable for recreation if they are free of the thick weedy vegetation, often comprised of invasive species, that grows around the lake edge. This vegetation makes it difficult to launch boats and swim. In order to reduce this vegetation, a common technique in the
By
Climate Adaptation Science Centers
link

Rethinking Lake Management for Invasive Plants Under Future Climate: Sensitivity of Lake Ecosystems to Winter Water Level Drawdowns

Small lakes are important to local economies as sources of water supply and places of recreation. Commonly, lakes are considered more desirable for recreation if they are free of the thick weedy vegetation, often comprised of invasive species, that grows around the lake edge. This vegetation makes it difficult to launch boats and swim. In order to reduce this vegetation, a common technique in the
Learn More
link
Ghost Forest at Blackwater National Wildlife Refuge

Projecting the Future of Headwater Streams to Inform Management Decisions

There is growing evidence that headwater stream ecosystems are especially vulnerable to changing climate and land use, but managers are challenged by the need to address these threats at a landscape scale, often through coordination with multiple management agencies and landowners. This project sought to provide an example of cooperative landscape decision-making by addressing the conservation of
By
Climate Adaptation Science Centers
link

Projecting the Future of Headwater Streams to Inform Management Decisions

There is growing evidence that headwater stream ecosystems are especially vulnerable to changing climate and land use, but managers are challenged by the need to address these threats at a landscape scale, often through coordination with multiple management agencies and landowners. This project sought to provide an example of cooperative landscape decision-making by addressing the conservation of
Learn More

A Remote Sensing Approach to Characterize Winter Water Level Drawdown Patterns in Lakes

This data release consists of four datasets that were used for evaluating winter drawdown patterns in 166 Massachusetts lakes greater than 0.3 km2 surface area. The first dataset (“Water area and level.csv”) provides water area and water level time series data of 166 lakes from 2016 to 2021. Water area and water level time-series data were derived from European Space Agency’s Sentinel 1 synthetic
By
Climate Adaptation Science Centers

Data used to test a video monitoring and computational system for estimating juvenile fish abundance

We developed and tested neural network-based models to recognize and count emigrating juvenile river herring in continuous video. Continuous video was collected from an underwater camera installed at Great Herring Pond in Bourne, Massachusetts (USA) between June and November 2017. Our algorithm extracts video frames to assess presence/absence of fish and count numbers of fish emigrating. We used e
By
Cooperative Research Units

Developing a Stochastic Hydrological Model for Informing Lake Water Level Drawdown Management

This data release consists of four datasets which were used for evaluating winter drawdown (WD) lakes to follow the Massachusetts general WD guidelines. The first dataset ("Water level observations.csv") provides water level monitoring data of 21 (18 WD and 3 non-WD) recreational lakes in Massachusetts from 2014 to 2018. The water levels were measured by paired nonvented pressure transducers (HOBO
By
Climate Adaptation Science Centers

Stream Temperature and Dissolved Oxygen Responses to Small Dams and Dam Removal in Massachusetts

Small, surface-release dams are ubiquitous across the U.S. and have the potential to alter stream flow, impede sediment and nutrient transport, and fragment biotic assemblages. To mitigate these and other ecological impacts and reduce public safety hazards, dam removal has become an increasingly prevalent method of stream restoration. However, few streams have been consistently monitored before an
By
Cooperative Research Units

In-vitro Propagation and Fish Assessments to Inform Restoration of Dwarf Wedgemussel (Alasmidonta Heterodon)

The dwarf wedgemussel (Alasmidonta heterodon) is a federally endangered freshwater mussel that once ranged from New Brunswick to North Carolina, but now only exists in isolated populations throughout its diminished range. Laboratory propagation in conjunction with augmentation or reintroduction is considered a critical component of dwarf wedgemussel restoration. The presented data aimed to I) deve
By
Cooperative Research Units
Filter Total Items: 37

Population density and zooplankton biomass influence anadromous juvenile river herring growth in freshwater lakes

Anadromous river herring populations, collectively alewife (Alosa pseudoharengus) and blueback herring (Alosa aestivalis), have experienced a multi-century decline in abundance and distribution. These declines have been attributed in part to anthropogenic threats in freshwater ecosystems (e.g., habitat fragmentation, overharvest, water pollution, watershed development). An understanding of variabi
Authors
Matthew T. Devine, Steven Bittner, Allison H. Roy, Benjamin I. Gahagan, Michael P. Armstrong, Adrian Jordaan
By
Cooperative Research Units

A video monitoring and computational system for estimating migratory juvenile fish abundance in river systems

Diadromous fishes migrate between marine and fresh waters for reproduction. For anadromous species, which spawn in freshwater, improved access to freshwater spawning and nursery habitats and ability of juveniles to emigrate to the ocean may support population recovery. Despite the potentially enormous influence of early life stage survival on adult population size, managers and scientists have lim
Authors
Meghna N. Marjadi, Sidney Batchelder, Ryan Govostes, Allison H. Roy, John J. Sheppard, Meghan-Grace Slocombe, Joel K. Llopiz
By
Cooperative Research Units

Food, water quality, and the growth of a freshwater mussel: Implications for population restoration

Unknown causes behind the loss of freshwater mussel populations have prompted population restoration as a tool to recover these imperiled species. However, water quality conditions that support mussel species within natural environments and potential causes of water quality impairment in systems with declining populations are typically unknown and may be critical knowledge needed before reintroduc
Authors
Ayla J. Skorupa, Allison H. Roy, Peter D. Hazelton, David Perkins, Timothy Timothy Warren, Brian S. Cheng
By
Cooperative Research Units

Metagenomic sequencing sheds light on microbes putatively associated with pneumonia-related fatalities of white-tailed deer (Odocoileus virginianus)

With emerging infectious disease outbreaks in human, domestic and wild animal populations on the rise, improvements in pathogen characterization and surveillance are paramount for the protection of human and animal health, as well as the conservation of ecologically and economically important wildlife. Genomics offers a range of suitable tools to meet these goals, with metagenomic sequencing facil
Authors
Melanie B. Prentice, Marie L.J. Gilbertson, Daniel J. Storm, Allison H. Roy, Daniel P. Walsh, Marie E. Pinkerton, Pauline L. Kamath
By
Ecosystems Mission Area, Cooperative Research Units, National Wildlife Health Center

A multi-sensor approach to characterize winter water-level drawdown patterns in lakes

Artificial manipulation of lake water levels through practices like winter water-level drawdown (WD) is prevalent across many regions, but the spatiotemporal patterns are not well documented due to limited in situ monitoring. Multi-sensor satellite remote sensing provides an opportunity to map and analyze drawdown frequency and metrics (timing, magnitude, duration) at broad scales. This study deve
Authors
Abhishek Kumar, Allison H. Roy, Konstantinos Andreadis, Xinchen He, Caitlyn Butler
By
Cooperative Research Units

Abundance of five sympatric stream dwelling mussels varies with physical habitat

Freshwater mussel species regularly co-occur in streams forming assemblages, but the extent of shared versus unique instream habitat features that contribute to their distribution and abundance is poorly understood. In Massachusetts, a rare species, Alasmidonta varicosa, is often found with four other species: Alasmidonta undulata, Strophitus undulatus, Margaritifera margaritifera, and Elliptio co
Authors
Ayla J. Skorupa, Allison H. Roy, Peter D. Hazelton, David Perkins, Timothy Warren, Andy Fisk
By
Cooperative Research Units

LakeLevel tracker: A Google Earth engine-based web application for characterizing lake water levels

No abstract available.
Authors
Abhishek Kumar, Allison H. Roy, Konstantinos Andreadis, Xinchen He, Caitlyn Butler
By
Cooperative Research Units

Developing a stochastic hydrological model for informing lake water level drawdown management

Winter drawdown (WD) is a common lake management tool for multiple purposes such as flood control, aquatic vegetation reduction, and lake infrastructure maintenance. To minimize adverse impacts to a lake’s ecosystem, regulatory agencies may provide managers with general guidelines for drawdown and refill timing, drawdown magnitude, and outflow limitations. However, there is significant uncertainty
Authors
Xinchen He, Konstantinos Andreadisa, Allison H. Roy, Abhiskek Kumar, Caitlyn Butler
By
Cooperative Research Units

Watershed selection to support freshwater mussel restoration: An open-loop decision guide

No abstract available.
Authors
Ayla J. Skorupa, David Perkins, Allison H. Roy, Jennifer E. Ryan
By
Cooperative Research Units

Urbanization and stream ecology: Moving the bar on multidisciplinary solutions to wicked urban stream problems

Decades of research on the effects of urbanization on stream ecology have shown that urban stream problems are inherently wicked. These problems are wicked in the sense that they are difficult to solve because information is incomplete, changing, or conflicting and because finding potential solutions often requires input from stakeholders who can have conflicting and competing values. The 5th Symp
Authors
Megan L. Fork, Kristina G. Hopkins, Jessica Chappell, Robert J. Hawley, Sujay S. Kaushal, Brian M. Murphy, Blanca Ríos-Touma, Allison H. Roy
By
Water Resources Mission Area, Cooperative Research Units, South Atlantic Water Science Center (SAWSC)

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 understand
Authors
Mary Freeman, Kevin R. Bestgen, Daren 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
By
Cooperative Research Units, Eastern Ecological Science Center

Homeowners’ willingness to adopt environmentally beneficial landscape practices in an urbanizing watershed

Streams in urbanizing watersheds often experience low flows in summer due to increased water use for residential landscaping and decreased base flow as impervious land cover limits aquifer recharge. Environmentally beneficial landscape practices that save water and infiltrate runoff have the potential to provide multiple ecological benefits including reducing stress on urban streams, but can face
Authors
Johanna Stacy, Robert L. Ryan, Allison H. Roy, Anita Milman
By
Cooperative Research Units

A Long Short Term Memory model for predicting daily lake ice cover changes in the Northern Hemisphere

This software release includes the python scripts and jupyter notebooks of collecting remote-sensed lake ice cover data, training & validating a lake ice model and visualizing the model output.
By
Cooperative Research Units

Winter Drawdown

The Google Earth Engine (GEE) code was written in JavaScript which can derive water area and water level time series data of multiple lakes for specified date range. Data derived from GEE code were used in classifying winter drawdown lakes and to derive winter drawdown metrics (using python code in Jupyter Notebook) in our submitted manuscript to the Journal of Environmental Management. We also tr
By
Cooperative Research Units

A hydrological modeling framework for lake water level drawdown management

This model was written in python3 which can simulate water level fluctuations under different drawdown operation rules. We submitted the manuscript about this model to the Journal of Environmental Management. The model file was saved in directory “models/WDLake”, and you can reproduce the results by running the jupyter notebooks in “notebooks/”.
By
Cooperative Research Units
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