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Suresh Andrew Sethi, PhD (Former Employee)

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Staff on frozen Thunder Bay, Lake Superior, collecting egg samples

Aquatic Native Species and Habitat Restoration: Cisco Spawning Habitat Assessment

Cisco (formerly known as Lake Herring) Coregonus artedi are native shallow water coregonines which were formerly very abundant in the Great Lakes and provided large commercial fisheries and healthy prey to native piscivores. In most areas outside of Lake Superior, cisco abundance is greatly reduced and in Lakes Ontario and Erie they are uncommon to rare.
link

Aquatic Native Species and Habitat Restoration: Cisco Spawning Habitat Assessment

Cisco (formerly known as Lake Herring) Coregonus artedi are native shallow water coregonines which were formerly very abundant in the Great Lakes and provided large commercial fisheries and healthy prey to native piscivores. In most areas outside of Lake Superior, cisco abundance is greatly reduced and in Lakes Ontario and Erie they are uncommon to rare.
Learn More
link
Elodea spp. on a rake in Sand Lake in Anchorage, Alaska

Effect of Elodea spp. on Fish Performance Mediated Through Food Web Interactions

The potential for invasive species introductions in Arctic and Subarctic ecosystems is growing as climate change manifests and human activity increases in high latitudes.
By
Biological Threats and Invasive Species Research Program, Species Management Research Program, Alaska Science Center
link

Effect of Elodea spp. on Fish Performance Mediated Through Food Web Interactions

The potential for invasive species introductions in Arctic and Subarctic ecosystems is growing as climate change manifests and human activity increases in high latitudes.
Learn More

Hydroacoustic data from uncrewed surface vehicle (USV) overtakes in Lake Superior, 2022

These data were derived from hydroacoustic data collected by uncrewed surface vehicles (USVs) and powered research vessels in Lake Superior in 2022. The powered vessels overtook the USVs to study fish avoidance of survey vessels during traditional acoustic surveys. The water column was divided into four depth groups for analysis. Each USV transect was binned into 30-sec intervals and...
By
Great Lakes Science Center

Hydroacoustic data from uncrewed surface vehicle (USV) overtakes in Lakes Huron and Michigan, 2021

These data were derived from hydroacoustic data collected by uncrewed surface vehicles (USVs) and powered research vessels. The powered vessels overtook the USVs in Lakes Huron and Michigan to study fish avoidance of survey vessels during traditional acoustic surveys. The water column was divided into three depth groups (epilimnion, metalimnion, hypolimnion) for analysis. Each drone...
By
Great Lakes Science Center

Survival and ancillary data associated with Cisco acoustic tagging experiment conducted in 2018 and 2019

These data include survival information for Cisco in the laboratory for up to 30 days after surgical implantation of two different sizes of Lotek acoustic tags. Three-hundred fish of a range of sizes were used for the implantation and controls of this experiment, which was repeated three time. Ancillary data of surgical condition, recovery, and time until death or tag expulsion were also...
By
Great Lakes Science Center
Filter Total Items: 39

Reconstructing half a century of coregonine recruitment reveals species-specific dynamics and synchrony across the Laurentian Great Lakes

Understanding how multiple species and populations vary in their recruitment dynamics can elucidate the processes driving recruitment across space and time. Lake Whitefish (Coregonus clupeaformis) and Cisco (C. artedi) are socioecologically important fishes across their range; however, many Laurentian Great Lakes populations have experienced declining, poor, or sporadic recruitment in...
Authors
Taylor A. Brown, Lars G. Rudstam, Suresh A. Sethi, Paul Ripple, Jason Smith, Ted Treska, Christopher Hessell, Erik Olsen, Ji X. He, Jory Jonas, Benjamin J. Rook, Joshua Blankenheim, Sarah J.H. Beech, Erin Brown, Eric K. Berglund, H. Andrew Cook, Erin S. Dunlop, Stephen James, Steven A. Pothoven, Zach Amidon, John A. Sweka, Dray Carl, Scott Hansen, David Bunnell, Brian Weidel, Andrew Edgar Honsey
By
Ecosystems Mission Area, Great Lakes Science Center

Synthesizing professional opinion of Lake Whitefish and Cisco recruitment drivers across the Great Lakes

Disentangling the suite of ecological drivers that explain recruitment variability for Lake Whitefish Coregonus clupeaformis and Cisco C. artedi is of critical importance for their conservation, management, and stewardship in the Laurentian Great Lakes. However, recruitment is inherently variable and can be regulated by many interacting processes, the relative importance of which can...
Authors
Taylor A. Brown, Lars G. Rudstam, Suresh A. Sethi, Chris Hessell, Erik Olsen, Jory L. Jonas, Benjamin J. Rook, Steven A. Pothoven, Sarah J.H. Beech, Erin S. Dunlop, Stephen James, Jason B. Smith, Zach Amidon, Dray D. Carl, David Bunnell, Ralph W. Tingley, Brian Weidel, Andrew Edgar Honsey
By
Ecosystems Mission Area, Great Lakes Science Center

Multistage time-to-event models improve survival inference by partitioning mortality processes of tracked organisms

Advances in tagging technologies are expanding opportunities to estimate survival of fish and wildlife populations. Yet, capture and handling effects could impact survival outcomes and bias inference about natural mortality processes. We developed a multistage time-to-event model that can partition the survival process into sequential phases that reflect the tagged animal experience...
Authors
Suresh A. Sethi, Alex L. Koeberle, Anna J. Poulton, Daniel W. Linden, Duane R. Diefenbach, Frances E. Buderman, Mary Jo Casalena, Kenneth Duren
By
Cooperative Research Units

Prey ration, temperature, and predator species influence digestion rates of prey DNA inferred from qPCR and metabarcoding

Diet analysis is a vital tool for understanding trophic interactions and is frequently used to inform conservation and management. Molecular approaches can identify diet items that are impossible to distinguish using more traditional visual-based methods. Yet, our understanding of how different variables, such as predator species or prey ration size, influence molecular diet analysis is...
Authors
Cory Dick, Wesley A. Larson, Kirby Karpan, Diana S. Baetscher, Yue Shi, Suresh Sethi, Nann A. Fangue, Mark J. Henderson
By
Cooperative Research Units

Larval cisco and lake whitefish exhibit high distributional overlap within nursery areas

Coregonine fishes, including lake whitefish (Coregonus clupeaformis) and cisco (C. artedi), are socioecologically important in the Laurentian Great Lakes and of conservation concern, but the processes driving recruitment variability are unclear. In Lake Ontario, cisco and lake whitefish exhibit similar spawning behaviours and early life histories, but population trajectories are...
Authors
Taylor A. Brown, Lars G. Rudstam, Jeremy P. Holden, Brian Weidel, Amanda Susanne Ackiss, Ann J. Ropp, Marc Chalupnicki, James E. McKenna, Suresh A. Sethi
By
Ecosystems Mission Area, Great Lakes Science Center

Elodea mediates juvenile salmon growth by altering physical structure in freshwater habitats

Invasive species introductions in high latitudes are accelerating and elevating the need to address questions of their effects on Subarctic and Arctic ecosystems. As a driver of ecosystem function, submerged aquatic vegetation is one of the most deleterious biological invasions to aquatic food webs. The aquatic plant Elodea spp. has potential to be a widespread invader to Arctic and...
Authors
Michael P. Carey, Gordon H. Reeves, Suresh Sethi, Theresa L. Tanner, Daniel B. Young, Krista K. Bartz, Christian E. Zimmerman
By
Ecosystems Mission Area, Alaska Science Center

Diversity in spawning habitat use among Great Lakes Cisco populations

Cisco (Coregonus artedi) once dominated fish communities in the Laurentian Great Lakes. Restoring the abundance and distribution of this species has emerged as a management priority, yet our understanding of Cisco spawning habitat use is insufficient to characterise habitat needs for these populations and assess whether availability of suitable spawning habitat could be a constraint to...
Authors
Matthew R. Paufve, Suresh Sethi, Brian Weidel, Brian F. Lantry, Daniel Yule, Lars G. Rudstam, Jory L. Jonas, Eric K. Berglund, Michael J. Connerton, Dimitry Gorsky, Matthew Herbert, Jason Smith
By
Ecosystems Mission Area, Cooperative Research Units, Great Lakes Science Center

Estimating Pacific walrus abundance and survival with multievent mark-recapture models

Arctic marine ecosystems are undergoing rapid physical and biological change associated with climate warming and loss of sea ice. Sea ice loss will impact many species through altered spatial and temporal availability of resources. In the Bering and Chukchi Seas, the Pacific walrus Odobenus rosmarus divergens is one species that could be impacted by rapid environmental change, and thus...
Authors
William S. Beatty, Patrick R. Lemons, Jason P. Everett, Cara J. Lewis, Rebecca L. Taylor, Robert J. Lynn, Suresh A. Sethi, Lori T. Quakenbush, John J. Citta, Michelle Kissling, Natalia Kryukova, John K. Wennburg
By
Ecosystems Mission Area, Cooperative Research Units, Alaska Science Center, Upper Midwest Environmental Sciences Center

Ecological and social strategies for managing fisheries using the Resist-Accept-Direct (RAD) framework

Fisheries management is a complex task made even more challenging by rapid and unprecedented socioecological transformations associated with climate change. The Resist-Accept-Direct (RAD) framework can be a useful tool to support fisheries management in facing the high uncertainty and variability associated with aquatic ecosystem transformations. Here, RAD strategies are presented to...
Authors
Abigail Lynch, Frank J. Rahel, Douglas Limpinsel, Suresh Sethi, Agustin C. Engman, David J. Lawrence, Katherine E. Mills, Wendy Morrison, Jay O. Peterson, Mark T. Porath
By
Ecosystems Mission Area, Climate Adaptation Science Centers

Balancing prey availability and predator consumption: A multispecies stock assessment for Lake Ontario

Trophic interactions are drivers of ecosystem change and stability, yet are often excluded from fishery assessment models, despite their potential capacity to improve estimates of species dynamics and future fishery sustainability. In Lake Ontario, recreational salmonine fisheries, including Chinook salmon (Oncorhynchus tshawytscha) and lake trout (Salvelinus namaycush), depend on a...
Authors
Kimberly B. Fitzpatrick, Brian Weidel, Michael J. Connerton, Jana R. Lantry, Jeremy P. Holden, Michael J. Yuille, Brian F. Lantry, Steven R. LaPan, Lars G. Rudstam, Patrick J. Sullivan, Travis O. Brenden, Suresh Sethi
By
Ecosystems Mission Area, Cooperative Research Units, Great Lakes Science Center

A machine learning approach to identify barriers in stream networks demonstrates high prevalence of unmapped riverine dams

Restoring stream ecosystem integrity by removing unused or derelict dams has become a priority for watershed conservation globally. However, efforts to restore connectivity are constrained by the availability of accurate dam inventories which often overlook smaller unmapped riverine dams. Here we develop and test a machine learning approach to identify unmapped dams using a combination...
Authors
Brian Buchanan, Suresh Sethi, Scott Cuppett, Megan Lung, George Jackman, Liam Zarri, Ethan Duvall, Jeremy Dietrich, Patrick Sullivan, Alon Dominitz, Josephine Archibald, Alexander Flecker, Brian Rahm
By
Cooperative Research Units

RAD adaptive management for transforming ecosystems

Intensifying global change is propelling many ecosystems toward irreversible transformations. Natural resource managers face the complex task of conserving these important resources under unprecedented conditions and expanding uncertainty. As once familiar ecological conditions disappear, traditional management approaches that assume the future will reflect the past are becoming...
Authors
Abigail Lynch, Laura Thompson, John M. Morton, Erik A. Beever, Michael Clifford, Douglas Limpinsel, Robert T. Magill, Dawn R. Magness, Tracy A. Melvin, Robert A. Newman, Mark T. Porath, Frank J. Rahel, Joel H. Reynolds, Gregor W. Schuurman, Suresh Sethi, Jennifer L. Wilkening
By
Ecosystems Mission Area, Climate Adaptation Science Centers, Cooperative Research Units

Science and Products

link
Staff on frozen Thunder Bay, Lake Superior, collecting egg samples

Aquatic Native Species and Habitat Restoration: Cisco Spawning Habitat Assessment

Cisco (formerly known as Lake Herring) Coregonus artedi are native shallow water coregonines which were formerly very abundant in the Great Lakes and provided large commercial fisheries and healthy prey to native piscivores. In most areas outside of Lake Superior, cisco abundance is greatly reduced and in Lakes Ontario and Erie they are uncommon to rare.
link

Aquatic Native Species and Habitat Restoration: Cisco Spawning Habitat Assessment

Cisco (formerly known as Lake Herring) Coregonus artedi are native shallow water coregonines which were formerly very abundant in the Great Lakes and provided large commercial fisheries and healthy prey to native piscivores. In most areas outside of Lake Superior, cisco abundance is greatly reduced and in Lakes Ontario and Erie they are uncommon to rare.
Learn More
link
Elodea spp. on a rake in Sand Lake in Anchorage, Alaska

Effect of Elodea spp. on Fish Performance Mediated Through Food Web Interactions

The potential for invasive species introductions in Arctic and Subarctic ecosystems is growing as climate change manifests and human activity increases in high latitudes.
By
Biological Threats and Invasive Species Research Program, Species Management Research Program, Alaska Science Center
link

Effect of Elodea spp. on Fish Performance Mediated Through Food Web Interactions

The potential for invasive species introductions in Arctic and Subarctic ecosystems is growing as climate change manifests and human activity increases in high latitudes.
Learn More

Hydroacoustic data from uncrewed surface vehicle (USV) overtakes in Lake Superior, 2022

These data were derived from hydroacoustic data collected by uncrewed surface vehicles (USVs) and powered research vessels in Lake Superior in 2022. The powered vessels overtook the USVs to study fish avoidance of survey vessels during traditional acoustic surveys. The water column was divided into four depth groups for analysis. Each USV transect was binned into 30-sec intervals and...
By
Great Lakes Science Center

Hydroacoustic data from uncrewed surface vehicle (USV) overtakes in Lakes Huron and Michigan, 2021

These data were derived from hydroacoustic data collected by uncrewed surface vehicles (USVs) and powered research vessels. The powered vessels overtook the USVs in Lakes Huron and Michigan to study fish avoidance of survey vessels during traditional acoustic surveys. The water column was divided into three depth groups (epilimnion, metalimnion, hypolimnion) for analysis. Each drone...
By
Great Lakes Science Center

Survival and ancillary data associated with Cisco acoustic tagging experiment conducted in 2018 and 2019

These data include survival information for Cisco in the laboratory for up to 30 days after surgical implantation of two different sizes of Lotek acoustic tags. Three-hundred fish of a range of sizes were used for the implantation and controls of this experiment, which was repeated three time. Ancillary data of surgical condition, recovery, and time until death or tag expulsion were also...
By
Great Lakes Science Center
Filter Total Items: 39

Reconstructing half a century of coregonine recruitment reveals species-specific dynamics and synchrony across the Laurentian Great Lakes

Understanding how multiple species and populations vary in their recruitment dynamics can elucidate the processes driving recruitment across space and time. Lake Whitefish (Coregonus clupeaformis) and Cisco (C. artedi) are socioecologically important fishes across their range; however, many Laurentian Great Lakes populations have experienced declining, poor, or sporadic recruitment in...
Authors
Taylor A. Brown, Lars G. Rudstam, Suresh A. Sethi, Paul Ripple, Jason Smith, Ted Treska, Christopher Hessell, Erik Olsen, Ji X. He, Jory Jonas, Benjamin J. Rook, Joshua Blankenheim, Sarah J.H. Beech, Erin Brown, Eric K. Berglund, H. Andrew Cook, Erin S. Dunlop, Stephen James, Steven A. Pothoven, Zach Amidon, John A. Sweka, Dray Carl, Scott Hansen, David Bunnell, Brian Weidel, Andrew Edgar Honsey
By
Ecosystems Mission Area, Great Lakes Science Center

Synthesizing professional opinion of Lake Whitefish and Cisco recruitment drivers across the Great Lakes

Disentangling the suite of ecological drivers that explain recruitment variability for Lake Whitefish Coregonus clupeaformis and Cisco C. artedi is of critical importance for their conservation, management, and stewardship in the Laurentian Great Lakes. However, recruitment is inherently variable and can be regulated by many interacting processes, the relative importance of which can...
Authors
Taylor A. Brown, Lars G. Rudstam, Suresh A. Sethi, Chris Hessell, Erik Olsen, Jory L. Jonas, Benjamin J. Rook, Steven A. Pothoven, Sarah J.H. Beech, Erin S. Dunlop, Stephen James, Jason B. Smith, Zach Amidon, Dray D. Carl, David Bunnell, Ralph W. Tingley, Brian Weidel, Andrew Edgar Honsey
By
Ecosystems Mission Area, Great Lakes Science Center

Multistage time-to-event models improve survival inference by partitioning mortality processes of tracked organisms

Advances in tagging technologies are expanding opportunities to estimate survival of fish and wildlife populations. Yet, capture and handling effects could impact survival outcomes and bias inference about natural mortality processes. We developed a multistage time-to-event model that can partition the survival process into sequential phases that reflect the tagged animal experience...
Authors
Suresh A. Sethi, Alex L. Koeberle, Anna J. Poulton, Daniel W. Linden, Duane R. Diefenbach, Frances E. Buderman, Mary Jo Casalena, Kenneth Duren
By
Cooperative Research Units

Prey ration, temperature, and predator species influence digestion rates of prey DNA inferred from qPCR and metabarcoding

Diet analysis is a vital tool for understanding trophic interactions and is frequently used to inform conservation and management. Molecular approaches can identify diet items that are impossible to distinguish using more traditional visual-based methods. Yet, our understanding of how different variables, such as predator species or prey ration size, influence molecular diet analysis is...
Authors
Cory Dick, Wesley A. Larson, Kirby Karpan, Diana S. Baetscher, Yue Shi, Suresh Sethi, Nann A. Fangue, Mark J. Henderson
By
Cooperative Research Units

Larval cisco and lake whitefish exhibit high distributional overlap within nursery areas

Coregonine fishes, including lake whitefish (Coregonus clupeaformis) and cisco (C. artedi), are socioecologically important in the Laurentian Great Lakes and of conservation concern, but the processes driving recruitment variability are unclear. In Lake Ontario, cisco and lake whitefish exhibit similar spawning behaviours and early life histories, but population trajectories are...
Authors
Taylor A. Brown, Lars G. Rudstam, Jeremy P. Holden, Brian Weidel, Amanda Susanne Ackiss, Ann J. Ropp, Marc Chalupnicki, James E. McKenna, Suresh A. Sethi
By
Ecosystems Mission Area, Great Lakes Science Center

Elodea mediates juvenile salmon growth by altering physical structure in freshwater habitats

Invasive species introductions in high latitudes are accelerating and elevating the need to address questions of their effects on Subarctic and Arctic ecosystems. As a driver of ecosystem function, submerged aquatic vegetation is one of the most deleterious biological invasions to aquatic food webs. The aquatic plant Elodea spp. has potential to be a widespread invader to Arctic and...
Authors
Michael P. Carey, Gordon H. Reeves, Suresh Sethi, Theresa L. Tanner, Daniel B. Young, Krista K. Bartz, Christian E. Zimmerman
By
Ecosystems Mission Area, Alaska Science Center

Diversity in spawning habitat use among Great Lakes Cisco populations

Cisco (Coregonus artedi) once dominated fish communities in the Laurentian Great Lakes. Restoring the abundance and distribution of this species has emerged as a management priority, yet our understanding of Cisco spawning habitat use is insufficient to characterise habitat needs for these populations and assess whether availability of suitable spawning habitat could be a constraint to...
Authors
Matthew R. Paufve, Suresh Sethi, Brian Weidel, Brian F. Lantry, Daniel Yule, Lars G. Rudstam, Jory L. Jonas, Eric K. Berglund, Michael J. Connerton, Dimitry Gorsky, Matthew Herbert, Jason Smith
By
Ecosystems Mission Area, Cooperative Research Units, Great Lakes Science Center

Estimating Pacific walrus abundance and survival with multievent mark-recapture models

Arctic marine ecosystems are undergoing rapid physical and biological change associated with climate warming and loss of sea ice. Sea ice loss will impact many species through altered spatial and temporal availability of resources. In the Bering and Chukchi Seas, the Pacific walrus Odobenus rosmarus divergens is one species that could be impacted by rapid environmental change, and thus...
Authors
William S. Beatty, Patrick R. Lemons, Jason P. Everett, Cara J. Lewis, Rebecca L. Taylor, Robert J. Lynn, Suresh A. Sethi, Lori T. Quakenbush, John J. Citta, Michelle Kissling, Natalia Kryukova, John K. Wennburg
By
Ecosystems Mission Area, Cooperative Research Units, Alaska Science Center, Upper Midwest Environmental Sciences Center

Ecological and social strategies for managing fisheries using the Resist-Accept-Direct (RAD) framework

Fisheries management is a complex task made even more challenging by rapid and unprecedented socioecological transformations associated with climate change. The Resist-Accept-Direct (RAD) framework can be a useful tool to support fisheries management in facing the high uncertainty and variability associated with aquatic ecosystem transformations. Here, RAD strategies are presented to...
Authors
Abigail Lynch, Frank J. Rahel, Douglas Limpinsel, Suresh Sethi, Agustin C. Engman, David J. Lawrence, Katherine E. Mills, Wendy Morrison, Jay O. Peterson, Mark T. Porath
By
Ecosystems Mission Area, Climate Adaptation Science Centers

Balancing prey availability and predator consumption: A multispecies stock assessment for Lake Ontario

Trophic interactions are drivers of ecosystem change and stability, yet are often excluded from fishery assessment models, despite their potential capacity to improve estimates of species dynamics and future fishery sustainability. In Lake Ontario, recreational salmonine fisheries, including Chinook salmon (Oncorhynchus tshawytscha) and lake trout (Salvelinus namaycush), depend on a...
Authors
Kimberly B. Fitzpatrick, Brian Weidel, Michael J. Connerton, Jana R. Lantry, Jeremy P. Holden, Michael J. Yuille, Brian F. Lantry, Steven R. LaPan, Lars G. Rudstam, Patrick J. Sullivan, Travis O. Brenden, Suresh Sethi
By
Ecosystems Mission Area, Cooperative Research Units, Great Lakes Science Center

A machine learning approach to identify barriers in stream networks demonstrates high prevalence of unmapped riverine dams

Restoring stream ecosystem integrity by removing unused or derelict dams has become a priority for watershed conservation globally. However, efforts to restore connectivity are constrained by the availability of accurate dam inventories which often overlook smaller unmapped riverine dams. Here we develop and test a machine learning approach to identify unmapped dams using a combination...
Authors
Brian Buchanan, Suresh Sethi, Scott Cuppett, Megan Lung, George Jackman, Liam Zarri, Ethan Duvall, Jeremy Dietrich, Patrick Sullivan, Alon Dominitz, Josephine Archibald, Alexander Flecker, Brian Rahm
By
Cooperative Research Units

RAD adaptive management for transforming ecosystems

Intensifying global change is propelling many ecosystems toward irreversible transformations. Natural resource managers face the complex task of conserving these important resources under unprecedented conditions and expanding uncertainty. As once familiar ecological conditions disappear, traditional management approaches that assume the future will reflect the past are becoming...
Authors
Abigail Lynch, Laura Thompson, John M. Morton, Erik A. Beever, Michael Clifford, Douglas Limpinsel, Robert T. Magill, Dawn R. Magness, Tracy A. Melvin, Robert A. Newman, Mark T. Porath, Frank J. Rahel, Joel H. Reynolds, Gregor W. Schuurman, Suresh Sethi, Jennifer L. Wilkening
By
Ecosystems Mission Area, Climate Adaptation Science Centers, Cooperative Research Units
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