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Suresh Andrew Sethi, PhD (Former Employee)

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Filter Total Items: 34

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 diverging. One hyp
Authors
Taylor A. Brown, Lars G. Rudstam, Jeremy P. Holden, Brian C. 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 Subarctic ecos
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 recovery. W
Authors
Matthew R. Paufve, Suresh Sethi, Brian C. 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, population
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 address ecolo
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 single prey sp
Authors
Kimberly B. Fitzpatrick, Brian C. 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

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 increasingly unten
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

Marine ecotourism for small pelagics as a source of alternative income generating activities to fisheries in a tropical community

Overharvest has led to marine ecosystem degradation and declining fishery catches in many tropical communities. To allow stocks to recover and provide increased flows of food and income, reductions in fishing effort are necessary. The development of Alternative Income Generating Activities can help to reduce the economic reliance of coastal communities on fishing, potentially reducing pressure on
Authors
Christopher Cusack, Suresh Sethi, Aaron Rice, Joseph Warren, Rod Fujita, Jose Ingles, Jimely Flores, Edwina Garchitorena, Sheryll Mesa
By
Cooperative Research Units

Managing for RADical ecosystem change: Applying the Resist-Accept-Direct (RAD) framework

Ecosystem transformation involves the emergence of persistent ecological or social–ecological systems that diverge, dramatically and irreversibly, from prior ecosystem structure and function. Such transformations are occurring at increasing rates across the planet in response to changes in climate, land use, and other factors. Consequently, a dynamic view of ecosystem processes that accommodates r
Authors
Abigail Lynch, Laura Thompson, Erik A. Beever, Augustin C. Engman, Cat Hawkins Hoffman, Stephen T. Jackson, Trevor J. Krabbenhoft, David J Lawrence, Douglas Limpinsel, Robert T. Magill, Tracy Melvin, John M. Morton, Robert Newman, Jay Peterson, Mark T. Porath, Frank J. Rahel, Gregor Schuurman, Suresh Sethi, Jennifer L. Wilkening
By
Ecosystems Mission Area, Climate Adaptation Science Centers, Cooperative Research Units, Alaska Science Center

Declining diversity of wild-caught species puts dietary nutrient supplies at risk

Although biodiversity loss adversely influences a variety of ecosystem functions, how declining wild food diversity affects nutrient supplies for people is poorly understood. Here, we analyze the impact of declining biodiversity on nutrients supplied by fish using detailed information from the Peruvian Amazon, where inland fisheries provide a critical source of nutrition for many of the region’s 8
Authors
Sebastian A. Heilpern, Ruth DeFries, Kathryn J. Fiorella, Alexander Flecker, Suresh Sethi, María Uriarte, Shahid Naeem
By
Cooperative Research Units

Acoustic tag retention and tagging mortality of juvenile cisco Coregonus artedi

Release of hatchery-reared juvenile cisco (Coregonus artedi) is an important tool for recovering Great Lakes populations, but post-release survival is unknown. Telemetry using small acoustic tags provides opportunities to assess the efficacy of hatchery-reared fish releases. However, better understanding of the tolerance of juvenile cisco to acoustic tags is needed. Juvenile cisco mortality and ta
Authors
James E. McKenna, Suresh Sethi, Grant Marvin Scholten, Jeremy W. Kraus, Marc Chalupnicki
By
Ecosystems Mission Area, Cooperative Research Units, Great Lakes Science Center

Substitution of inland fisheries with aquaculture and chicken undermines human nutrition in the Peruvian Amazon

With declining capture fisheries production, maintaining nutrient supplies largely hinges on substituting wild fish with economically comparable farmed animals. Although such transitions are increasingly commonplace across global inland and coastal communities, their nutritional consequences are unknown. Here, using human demographic and health information, and fish nutrient composition data from
Authors
Sebastian A. Heilpern, Kathryn Fiorella, Carlos Cañas, Alexander S. Flecker, Luis Moya, Shahid Naeem, Suresh Sethi, Maria Uriarte, Ruth DeFries
By
Cooperative Research Units
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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.
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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.
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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
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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.
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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 transect was b
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 recorded,
By
Great Lakes Science Center

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