Gregory Kennedy is a Supervisory Fisheries Biologist based in Ann Arbor, MI.
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Filter Total Items: 34
A structured approach to remediation site assessment: Lessons from 15 years of fish spawning habitat creation in the St. Clair‐Detroit River system
Ideally, restoration re‐establishes natural processes in degraded habitats (e.g., flow and sediment regimes). However, in altered systems where process‐based restoration is not feasible, habitat construction is another approach to mitigate degradation. Because habitat construction does not directly focus on restoring processes that build and maintain desired habitats, projects must be developed an
Authors
J. Fischer, Edward F. Roseman, Christine Mayer, Todd Wills, Lynn Vaccaro, Jennifer Read, Bruce A. Manny, Gregory W. Kennedy, Roseanne Ellison, Richard Drouin, Robin DeBruyne, Aline Cotel, Justin A. Chiotti, James C. Boase, David Bennion
Lake Sturgeon, Lake Whitefish, and Walleye egg deposition patterns with response to fish spawning substrate restoration in the St. Clair–Detroit River system
Egg deposition and use of restored spawning substrates by lithophilic fishes (e.g., Lake Sturgeon Acipenser fulvescens, Lake Whitefish Coregonus clupeaformis, and Walleye Sander vitreus) were assessed throughout the St. Clair–Detroit River system from 2005 to 2016. Bayesian models were used to quantify egg abundance and presence/absence relative to site-specific variables (e.g., depth, velocity, a
Authors
Jason L. Fischer, Jeremy J. Pritt, Edward F. Roseman, Carson G. Prichard, Jaquelyn M. Craig, Gregory W. Kennedy, Bruce A. Manny
Egg deposition by lithophilic-spawning fishes in the Detroit and Saint Clair Rivers, 2005–14
A long-term, multiseason, fish egg sampling program conducted annually on the Detroit (2005–14) and Saint Clair (2010–14) Rivers was summarized to identify where productive fish spawning habitat currently exists. Egg mats were placed on the river bottom during the spring and fall at historic spawning areas and candidate fish spawning habitat restoration sites throughout both rivers. Widespread evi
Authors
Carson G. Prichard, Jaquelyn M. Craig, Edward F. Roseman, Jason L. Fischer, Bruce A. Manny, Gregory W. Kennedy
Use of repeat surveys and flow and sediment transport modeling to support fish spawning reef placement in the Detroit River, MI
The introduction of rock-rubble substrate in rivers, to enhance fish spawning habitat, represents a significant investment in planning, permitting and construction. Where river processes deposit sediment and cover the substrate, its value as fish spawning habitat can be diminished. Therefore, it is crucial in the site se-lection process, that substrate be placed in locations that benefit the fish
Authors
Paul J. Kinzel, Jonathan M. Nelson, Gregory W. Kennedy, David Bennion
Artificial reefs and reef restoration in the Laurentian Great Lakes
We reviewed the published literature to provide an inventory of Laurentian Great Lakes artificial reef projects and their purposes. We also sought to characterize physical and biological monitoring for artificial reef projects in the Great Lakes and determine the success of artificial reefs in meeting project objectives. We found records of 6 artificial reefs in Lake Erie, 8 in Lake Michigan, 3 in
Authors
Matthew W. McLean, Edward F. Roseman, Jeremy J. Pritt, Gregory W. Kennedy, Bruce A. Manny
Mudpuppy (Necturus maculosus maculosus ) spatial distribution, breeding water depth, and use of artificial spawning habitat in the Detroit River
Mudpuppy (Necturus maculosus maculosus) populations have been declining in the Great Lakes region of North America. However, during fisheries assessments in the Detroit River, we documented Mudpuppy reproduction when we collected all life stages from egg through adult as by-catch in fisheries assessments. Ten years of fisheries sampling resulted in two occurrences of Mudpuppy egg collection and 41
Authors
Jaquelyn M. Craig, David A. Mifsud, Andrew S. Briggs, James C. Boase, Gregory W. Kennedy
A scientific basis for restoring fish spawning habitat in the St. Clair and Detroit Rivers of the Laurentian Great Lakes
Loss of functional habitat in riverine systems is a global fisheries issue. Few studies, however, describe the decision-making approach taken to abate loss of fish spawning habitat. Numerous habitat restoration efforts are underway and documentation of successful restoration techniques for spawning habitat of desirable fish species in large rivers connecting the Laurentian Great Lakes are reported
Authors
Bruce A. Manny, Edward F. Roseman, Gregory W. Kennedy, James C. Boase, Jaquelyn Craig, David H. Bennion, Jennifer Read, Lynn Vaccaro, Justin A. Chiotti, Richard Drouin, Roseanne Ellison
A portable freshwater closed-system fish egg incubation system
To identify fish eggs collected in the field to species, a portable closed‐system fish egg incubation system was designed and used to incubate and hatch the eggs in the laboratory. The system is portable, small in scale (2.54 × 1.52 × 2.03 m), and affordable, with the approximate cost of the system being US$8,300 (2012). The main tank is 678 L and holds a battery of up to 21 (egg) incubation jars.
Authors
Jenny L. Sutherland, Bruce A. Manny, Gregory W. Kennedy, Edward F. Roseman, Jeffrey D. Allen, M. Glen Black
Habitat used by juvenile lake sturgeon (Acipenser fulvescens) in the North Channel of the St. Clair River (Michigan, USA)
Lake sturgeon (Acipenser fulvescens) occupy the St. Clair River, part of a channel connecting lakes Huron and Erie in the Laurentian Great Lakes. In the North Channel of the St. Clair River, juvenile lake sturgeon (3–7 years old and 582–793 mm in length) were studied to determine movement patterns and habitat usage. Fourteen juveniles were implanted with ultrasonic transmitters and tracked June–Au
Authors
James C. Boase, Bruce A. Manny, Katherine A.L. Donald, Gregory W. Kennedy, James S. Diana, Michael V. Thomas, Justin A. Chiotti
Life history characteristics of a recovering lake whitefish Coregonus clupeaformis stock in the Detroit River, North America
The Detroit River is part of a channel connecting Lakes Huron and Erie and was once a prolific spawning area for lake whitefish, Coregonus clupeaformis. Large numbers of lake whitefish migrated into the river to spawn where they were harvested by commercial fisheries and for fish culture operations. Prior to our study, the last lake whitefish was landed from the Detroit River in 1925. Loss of spaw
Authors
Edward F. Roseman, Gregory W. Kennedy, Bruce A. Manny, James Boase, James McFee
Lake sturgeon response to a spawning reef constructed in the Detroit river
Prior to the First World War, the bi-national Detroit River provided vast areas of functional fish spawning and nursery habitat. However, ongoing conflicting human uses of these waters for activities such as waste disposal, water withdrawals, shoreline development, shipping, recreation, and fishing have altered many of the chemical, physical, and biological processes of the Detroit River. Of parti
Authors
Edward F. Roseman, B. Manny, J. Boase, M. Child, G. Kennedy, J. Craig, K. Soper, R. Drouin
Assessment of lake sturgeon (Acipenser fulvescens) spawning efforts in the lower St. Clair River, Michigan
One of the most threatened remaining populations of lake sturgeon in the Great Lakes is found in the connecting channels between Lake Huron and Lake Erie. Only two spawning grounds are presently known to be active in this region, and both are in the St. Clair River. The spawning reef in the St. Clair River delta has been recently colonized by round gobies (Neogobius melanostomus) in densities up t
Authors
S. Jerrine Nichols, Gregory Kennedy, Eric Crawford, Jeffrey Allen, John French, Glen Black, Marc Blouin, James P. Hickey, Sergei Chernyak, Robert Haas, Michael Thomas
Data releases by this scientist
Fish eggs collected in the St. Clair, Detroit, and St. Marys rivers, 2005-2022
A long-term, multiseason, fish egg sampling program is conducted annually on the Detroit, Saint Clair, and Saint Marys rivers to identify where productive fish spawning habitat currently exists and evaluate habitat restoration projects. Egg mats were placed on the river bottom during the spring and fall at historic spawning areas, candidate fish spawning habitat restoration sites, and completed sp
Hydrographic surveys and acoustic Doppler current profiler measurements collected to monitor fish spawning reef placements, Detroit and St. Clair Rivers, Michigan, September 13-16, 2021 and May 2-5, 2022
The U.S Geological Survey conducted hydrographic surveys from September 13-16, 2021 and May 2-5, 2022 to monitor fish spawning substrate placements (reefs) in the Detroit and St. Clair Rivers, Michigan. This work was conducted as part of a reimbursable agreement with the Environmental Protection Agency to provide technical assistance in areas of concern. A multibeam echosounder was used from the G
Grain-size distributions of bed material samples collected from the Middle Channel of the St. Clair River Delta, Michigan, November 10, 2021
The U.S. Geological Survey used a ponar sampler to collect bed material from the Middle Channel of the St. Clair River Delta on November 10, 2021. Three sediment samples were collected upstream of the artificial spawning reefs constructed in the Middle Channel and two on the reefs themselves.The bed sediment samples were dried and sieved at 1/2 phi increments to determine their grain-size distribu
Fish Egg Retention on Egg Mats in Experimental Flumes and Targeted Field Gear Egg Collection in the Detroit River, 2015-2016
Egg mat retention trials were conducted with walleye (Stizostedion vitreum) and lake whitefish (Coregonus clupeaformis) eggs in an experimental flume tank, seeded directly on egg mats (test retention efficiency) and hand dispersed in flowing flume water to simulate spawning over egg mats (test capture efficiency) with and without alternate substrate. In the field study, we measured number of eggs
Fish eggs collected in the St. Clair, Detroit, and St. Marys rivers, 2005-2018
A long-term, multiseason, fish egg sampling program is conducted annually on the Detroit, Saint Clair, and Saint Marys rivers to identify where productive fish spawning habitat currently exists. Egg mats were placed on the river bottom during the spring and fall at historic spawning areas, candidate fish spawning habitat restoration sites, and completed spawning habitat restoration sites throughou
Fish eggs collected in the St. Clair and Detroit rivers, 2005-2016
The data describe the number, density, date of collection, and exact collection location of fish eggs (from multiple species) collected in the St. Clair and Detroit Rivers from 2005-2016.
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Filter Total Items: 34A structured approach to remediation site assessment: Lessons from 15 years of fish spawning habitat creation in the St. Clair‐Detroit River system
Ideally, restoration re‐establishes natural processes in degraded habitats (e.g., flow and sediment regimes). However, in altered systems where process‐based restoration is not feasible, habitat construction is another approach to mitigate degradation. Because habitat construction does not directly focus on restoring processes that build and maintain desired habitats, projects must be developed anAuthorsJ. Fischer, Edward F. Roseman, Christine Mayer, Todd Wills, Lynn Vaccaro, Jennifer Read, Bruce A. Manny, Gregory W. Kennedy, Roseanne Ellison, Richard Drouin, Robin DeBruyne, Aline Cotel, Justin A. Chiotti, James C. Boase, David BennionLake Sturgeon, Lake Whitefish, and Walleye egg deposition patterns with response to fish spawning substrate restoration in the St. Clair–Detroit River system
Egg deposition and use of restored spawning substrates by lithophilic fishes (e.g., Lake Sturgeon Acipenser fulvescens, Lake Whitefish Coregonus clupeaformis, and Walleye Sander vitreus) were assessed throughout the St. Clair–Detroit River system from 2005 to 2016. Bayesian models were used to quantify egg abundance and presence/absence relative to site-specific variables (e.g., depth, velocity, aAuthorsJason L. Fischer, Jeremy J. Pritt, Edward F. Roseman, Carson G. Prichard, Jaquelyn M. Craig, Gregory W. Kennedy, Bruce A. MannyEgg deposition by lithophilic-spawning fishes in the Detroit and Saint Clair Rivers, 2005–14
A long-term, multiseason, fish egg sampling program conducted annually on the Detroit (2005–14) and Saint Clair (2010–14) Rivers was summarized to identify where productive fish spawning habitat currently exists. Egg mats were placed on the river bottom during the spring and fall at historic spawning areas and candidate fish spawning habitat restoration sites throughout both rivers. Widespread eviAuthorsCarson G. Prichard, Jaquelyn M. Craig, Edward F. Roseman, Jason L. Fischer, Bruce A. Manny, Gregory W. KennedyUse of repeat surveys and flow and sediment transport modeling to support fish spawning reef placement in the Detroit River, MI
The introduction of rock-rubble substrate in rivers, to enhance fish spawning habitat, represents a significant investment in planning, permitting and construction. Where river processes deposit sediment and cover the substrate, its value as fish spawning habitat can be diminished. Therefore, it is crucial in the site se-lection process, that substrate be placed in locations that benefit the fishAuthorsPaul J. Kinzel, Jonathan M. Nelson, Gregory W. Kennedy, David BennionArtificial reefs and reef restoration in the Laurentian Great Lakes
We reviewed the published literature to provide an inventory of Laurentian Great Lakes artificial reef projects and their purposes. We also sought to characterize physical and biological monitoring for artificial reef projects in the Great Lakes and determine the success of artificial reefs in meeting project objectives. We found records of 6 artificial reefs in Lake Erie, 8 in Lake Michigan, 3 inAuthorsMatthew W. McLean, Edward F. Roseman, Jeremy J. Pritt, Gregory W. Kennedy, Bruce A. MannyMudpuppy (Necturus maculosus maculosus ) spatial distribution, breeding water depth, and use of artificial spawning habitat in the Detroit River
Mudpuppy (Necturus maculosus maculosus) populations have been declining in the Great Lakes region of North America. However, during fisheries assessments in the Detroit River, we documented Mudpuppy reproduction when we collected all life stages from egg through adult as by-catch in fisheries assessments. Ten years of fisheries sampling resulted in two occurrences of Mudpuppy egg collection and 41AuthorsJaquelyn M. Craig, David A. Mifsud, Andrew S. Briggs, James C. Boase, Gregory W. KennedyA scientific basis for restoring fish spawning habitat in the St. Clair and Detroit Rivers of the Laurentian Great Lakes
Loss of functional habitat in riverine systems is a global fisheries issue. Few studies, however, describe the decision-making approach taken to abate loss of fish spawning habitat. Numerous habitat restoration efforts are underway and documentation of successful restoration techniques for spawning habitat of desirable fish species in large rivers connecting the Laurentian Great Lakes are reportedAuthorsBruce A. Manny, Edward F. Roseman, Gregory W. Kennedy, James C. Boase, Jaquelyn Craig, David H. Bennion, Jennifer Read, Lynn Vaccaro, Justin A. Chiotti, Richard Drouin, Roseanne EllisonA portable freshwater closed-system fish egg incubation system
To identify fish eggs collected in the field to species, a portable closed‐system fish egg incubation system was designed and used to incubate and hatch the eggs in the laboratory. The system is portable, small in scale (2.54 × 1.52 × 2.03 m), and affordable, with the approximate cost of the system being US$8,300 (2012). The main tank is 678 L and holds a battery of up to 21 (egg) incubation jars.AuthorsJenny L. Sutherland, Bruce A. Manny, Gregory W. Kennedy, Edward F. Roseman, Jeffrey D. Allen, M. Glen BlackHabitat used by juvenile lake sturgeon (Acipenser fulvescens) in the North Channel of the St. Clair River (Michigan, USA)
Lake sturgeon (Acipenser fulvescens) occupy the St. Clair River, part of a channel connecting lakes Huron and Erie in the Laurentian Great Lakes. In the North Channel of the St. Clair River, juvenile lake sturgeon (3–7 years old and 582–793 mm in length) were studied to determine movement patterns and habitat usage. Fourteen juveniles were implanted with ultrasonic transmitters and tracked June–AuAuthorsJames C. Boase, Bruce A. Manny, Katherine A.L. Donald, Gregory W. Kennedy, James S. Diana, Michael V. Thomas, Justin A. ChiottiLife history characteristics of a recovering lake whitefish Coregonus clupeaformis stock in the Detroit River, North America
The Detroit River is part of a channel connecting Lakes Huron and Erie and was once a prolific spawning area for lake whitefish, Coregonus clupeaformis. Large numbers of lake whitefish migrated into the river to spawn where they were harvested by commercial fisheries and for fish culture operations. Prior to our study, the last lake whitefish was landed from the Detroit River in 1925. Loss of spawAuthorsEdward F. Roseman, Gregory W. Kennedy, Bruce A. Manny, James Boase, James McFeeLake sturgeon response to a spawning reef constructed in the Detroit river
Prior to the First World War, the bi-national Detroit River provided vast areas of functional fish spawning and nursery habitat. However, ongoing conflicting human uses of these waters for activities such as waste disposal, water withdrawals, shoreline development, shipping, recreation, and fishing have altered many of the chemical, physical, and biological processes of the Detroit River. Of partiAuthorsEdward F. Roseman, B. Manny, J. Boase, M. Child, G. Kennedy, J. Craig, K. Soper, R. DrouinAssessment of lake sturgeon (Acipenser fulvescens) spawning efforts in the lower St. Clair River, Michigan
One of the most threatened remaining populations of lake sturgeon in the Great Lakes is found in the connecting channels between Lake Huron and Lake Erie. Only two spawning grounds are presently known to be active in this region, and both are in the St. Clair River. The spawning reef in the St. Clair River delta has been recently colonized by round gobies (Neogobius melanostomus) in densities up tAuthorsS. Jerrine Nichols, Gregory Kennedy, Eric Crawford, Jeffrey Allen, John French, Glen Black, Marc Blouin, James P. Hickey, Sergei Chernyak, Robert Haas, Michael Thomas - Data
Data releases by this scientist
Fish eggs collected in the St. Clair, Detroit, and St. Marys rivers, 2005-2022
A long-term, multiseason, fish egg sampling program is conducted annually on the Detroit, Saint Clair, and Saint Marys rivers to identify where productive fish spawning habitat currently exists and evaluate habitat restoration projects. Egg mats were placed on the river bottom during the spring and fall at historic spawning areas, candidate fish spawning habitat restoration sites, and completed spHydrographic surveys and acoustic Doppler current profiler measurements collected to monitor fish spawning reef placements, Detroit and St. Clair Rivers, Michigan, September 13-16, 2021 and May 2-5, 2022
The U.S Geological Survey conducted hydrographic surveys from September 13-16, 2021 and May 2-5, 2022 to monitor fish spawning substrate placements (reefs) in the Detroit and St. Clair Rivers, Michigan. This work was conducted as part of a reimbursable agreement with the Environmental Protection Agency to provide technical assistance in areas of concern. A multibeam echosounder was used from the GGrain-size distributions of bed material samples collected from the Middle Channel of the St. Clair River Delta, Michigan, November 10, 2021
The U.S. Geological Survey used a ponar sampler to collect bed material from the Middle Channel of the St. Clair River Delta on November 10, 2021. Three sediment samples were collected upstream of the artificial spawning reefs constructed in the Middle Channel and two on the reefs themselves.The bed sediment samples were dried and sieved at 1/2 phi increments to determine their grain-size distribuFish Egg Retention on Egg Mats in Experimental Flumes and Targeted Field Gear Egg Collection in the Detroit River, 2015-2016
Egg mat retention trials were conducted with walleye (Stizostedion vitreum) and lake whitefish (Coregonus clupeaformis) eggs in an experimental flume tank, seeded directly on egg mats (test retention efficiency) and hand dispersed in flowing flume water to simulate spawning over egg mats (test capture efficiency) with and without alternate substrate. In the field study, we measured number of eggsFish eggs collected in the St. Clair, Detroit, and St. Marys rivers, 2005-2018
A long-term, multiseason, fish egg sampling program is conducted annually on the Detroit, Saint Clair, and Saint Marys rivers to identify where productive fish spawning habitat currently exists. Egg mats were placed on the river bottom during the spring and fall at historic spawning areas, candidate fish spawning habitat restoration sites, and completed spawning habitat restoration sites throughouFish eggs collected in the St. Clair and Detroit rivers, 2005-2016
The data describe the number, density, date of collection, and exact collection location of fish eggs (from multiple species) collected in the St. Clair and Detroit Rivers from 2005-2016. - Multimedia
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