Skip to main content
U.S. flag

An official website of the United States government

Gregory W Kennedy

Gregory Kennedy is a Supervisory Fisheries Biologist based in Ann Arbor, MI.

Science and Products

Publications by this scientist

Filter Total Items: 36

Experimental assessment of egg mat gear retention and collection efficacy

Assessment of egg deposition is widely used to provide an index of spawning efforts for lithophilic spawning fishes. However, little is known about the collection efficacy and bias of fish egg collection methods. We conducted a two-phased study consisting of a simulated-river flume study (two-part design), and a field study (an egg drift comparison with capture on mats) to assess egg...
Authors
Madeline Grace Tomczak, Robin L. DeBruyne, Brian Schmidt, Dustin Bowser, Jason Fischer, Gregory W. Kennedy, Nicole R. King, Christine M. Mayer, Edward Roseman
By
Ecosystems Mission Area, Great Lakes Science Center

Repeat bathymetric surveys and model simulation of sedimentation processes near fish spawning placements, Detroit and St. Clair Rivers, Michigan

Nine rock-rubble fish spawning placements, or artificial reef complexes, constructed in the Detroit and St. Clair Rivers between 2004 to 2018 were surveyed periodically with multibeam sonar. These serial bathymetric surveys, conducted in 2015, 2018, 2021, and 2022, identified active sand bedform fields impinging two reef complexes: Fighting Island in the Detroit River and Middle Channel...
Authors
Paul J. Kinzel, Gregory W. Kennedy, Taylor Dudunake
By
Water Resources Mission Area, Ecosystems Mission Area, Colorado Water Science Center, Great Lakes Science Center, Idaho Water Science Center

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...
Authors
Jason Fischer, Edward Roseman, Christine M. Mayer, Todd C. Wills, Lynn Vaccaro, Jennifer Read, Bruce A. Manny, Gregory W. Kennedy, Roseanne Ellison, Richard Drouin, Robin L. DeBruyne, Aline Cotel, Justin A. Chiotti, James C. Boase, David Bennion
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
Jason Fischer, Jeremy Pritt, Edward Roseman, Carson G. Prichard, Jaquelyn M. Craig, Gregory W. Kennedy, Bruce A. Manny
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
Carson G. Prichard, Jaquelyn M. Craig, Edward Roseman, Jason Fischer, Bruce A. Manny, Gregory W. Kennedy
By
Ecosystems Mission Area, Great Lakes Science Center

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...
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...
Authors
Matthew W. McLean, Edward Roseman, Jeremy Pritt, Gregory W. Kennedy, Bruce A. Manny
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
Jaquelyn M. Craig, David A. Mifsud, Andrew S Briggs, James C. Boase, Gregory W. Kennedy
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
Bruce A. Manny, Edward Roseman, Gregory W. Kennedy, James C. Boase, Jaquelyn M. Craig, David Bennion, Jennifer Read, Lynn Vaccaro, Justin A. Chiotti, Richard Drouin, Roseanne Ellison
By
Ecosystems Mission Area, Great Lakes Science Center

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)...
Authors
Jenny L. Sutherland, Bruce A. Manny, Gregory W. Kennedy, Edward Roseman, Jeffrey D. Allen, M. Glen Black
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
James C. Boase, Bruce A. Manny, Katherine A.L. Donald, Gregory W. Kennedy, James S. Diana, Michael V. Thomas, Justin A. Chiotti
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
Edward Roseman, Gregory W. Kennedy, Bruce A. Manny, James C. Boase, James McFee
By
Ecosystems Mission Area, Great Lakes Science Center

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...
By
Great Lakes Science Center

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...
By
Water Resources Mission Area, Great Lakes Science Center

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...
By
Water Resources Mission Area, Great Lakes Science Center

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...
By
Great Lakes Science Center

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...
By
Great Lakes Science Center

Water Depths and Velocities at Fish Egg Sampling Sites in the St. Clair-Detroit River System, 2005-2016

This dataset contains depths and bottom velocities at discreet sampling locations in the St. Clair-Detroit River System. Measurements were made to complement data on fish egg deposition in the St. Clair-Detroit Rivers from 2005-2016. Depth measurements were made with a boat mounted sonar unit at the beginning of spring and fall sampling season from 2005-2016. Water velocities near the...
By
Great Lakes Science Center

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.
By
Great Lakes Science Center

Multimedia related to this scientist

A view of the shoreline with hills and a navigation light from the stern of a vessel on Lake Michigan
Leland in the Rearview Mirror
Leland in the Rearview Mirror
A view of the shoreline with hills and a navigation light from the stern of a vessel on Lake Michigan

Leland in the Rearview Mirror

Leland in the Rearview Mirror

The R/V Sculpin II departing the Leland harbor for a day on Lake Michigan tending acoustic telemetry fish-tracking arrays. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center
A view of the shoreline with hills and a navigation light from the stern of a vessel on Lake Michigan

Leland in the Rearview Mirror

Leland in the Rearview Mirror

The R/V Sculpin II departing the Leland harbor for a day on Lake Michigan tending acoustic telemetry fish-tracking arrays. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center
Researcher winch in a grapnel hook on a small vessel while retrieving an acoustic instrument
Happy Hooking
Happy Hooking
Researcher winch in a grapnel hook on a small vessel while retrieving an acoustic instrument

Happy Hooking

Happy Hooking

Retrieval of a submerged acoustic telemetry receiver by USGS biological science technicians (GLSC; Ann Arbor, Michigan) from offshore waters of Lake Michigan, using a grapnel drag to hook a 'snag' line attached to the mooring. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center
Researcher winch in a grapnel hook on a small vessel while retrieving an acoustic instrument

Happy Hooking

Happy Hooking

Retrieval of a submerged acoustic telemetry receiver by USGS biological science technicians (GLSC; Ann Arbor, Michigan) from offshore waters of Lake Michigan, using a grapnel drag to hook a 'snag' line attached to the mooring. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center
SCUBA diving off the R/V Stonecat in Lake Ontario
Backward Roll
Backward Roll
SCUBA diving off the R/V Stonecat in Lake Ontario

Backward Roll

Backward Roll

USGS Great Lakes Science Center dive team doing a backward roll off the R/V Stonecat to collect lake-bottom samples and retrieve instruments in Lake Ontario. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center
SCUBA diving off the R/V Stonecat in Lake Ontario

Backward Roll

Backward Roll

USGS Great Lakes Science Center dive team doing a backward roll off the R/V Stonecat to collect lake-bottom samples and retrieve instruments in Lake Ontario. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center

News about this scientist

GLSC presents at AFS Larval Fish Conference (Virtual) – Early Life History Section

GLSC presents at AFS Larval Fish Conference (Virtual) – Early Life History Section

American Fisheries Society Annual Larval Fish Conference Presentations

Read Article

Science and Products

Publications by this scientist

Filter Total Items: 36

Experimental assessment of egg mat gear retention and collection efficacy

Assessment of egg deposition is widely used to provide an index of spawning efforts for lithophilic spawning fishes. However, little is known about the collection efficacy and bias of fish egg collection methods. We conducted a two-phased study consisting of a simulated-river flume study (two-part design), and a field study (an egg drift comparison with capture on mats) to assess egg...
Authors
Madeline Grace Tomczak, Robin L. DeBruyne, Brian Schmidt, Dustin Bowser, Jason Fischer, Gregory W. Kennedy, Nicole R. King, Christine M. Mayer, Edward Roseman
By
Ecosystems Mission Area, Great Lakes Science Center

Repeat bathymetric surveys and model simulation of sedimentation processes near fish spawning placements, Detroit and St. Clair Rivers, Michigan

Nine rock-rubble fish spawning placements, or artificial reef complexes, constructed in the Detroit and St. Clair Rivers between 2004 to 2018 were surveyed periodically with multibeam sonar. These serial bathymetric surveys, conducted in 2015, 2018, 2021, and 2022, identified active sand bedform fields impinging two reef complexes: Fighting Island in the Detroit River and Middle Channel...
Authors
Paul J. Kinzel, Gregory W. Kennedy, Taylor Dudunake
By
Water Resources Mission Area, Ecosystems Mission Area, Colorado Water Science Center, Great Lakes Science Center, Idaho Water Science Center

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...
Authors
Jason Fischer, Edward Roseman, Christine M. Mayer, Todd C. Wills, Lynn Vaccaro, Jennifer Read, Bruce A. Manny, Gregory W. Kennedy, Roseanne Ellison, Richard Drouin, Robin L. DeBruyne, Aline Cotel, Justin A. Chiotti, James C. Boase, David Bennion
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
Jason Fischer, Jeremy Pritt, Edward Roseman, Carson G. Prichard, Jaquelyn M. Craig, Gregory W. Kennedy, Bruce A. Manny
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
Carson G. Prichard, Jaquelyn M. Craig, Edward Roseman, Jason Fischer, Bruce A. Manny, Gregory W. Kennedy
By
Ecosystems Mission Area, Great Lakes Science Center

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...
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...
Authors
Matthew W. McLean, Edward Roseman, Jeremy Pritt, Gregory W. Kennedy, Bruce A. Manny
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
Jaquelyn M. Craig, David A. Mifsud, Andrew S Briggs, James C. Boase, Gregory W. Kennedy
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
Bruce A. Manny, Edward Roseman, Gregory W. Kennedy, James C. Boase, Jaquelyn M. Craig, David Bennion, Jennifer Read, Lynn Vaccaro, Justin A. Chiotti, Richard Drouin, Roseanne Ellison
By
Ecosystems Mission Area, Great Lakes Science Center

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)...
Authors
Jenny L. Sutherland, Bruce A. Manny, Gregory W. Kennedy, Edward Roseman, Jeffrey D. Allen, M. Glen Black
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
James C. Boase, Bruce A. Manny, Katherine A.L. Donald, Gregory W. Kennedy, James S. Diana, Michael V. Thomas, Justin A. Chiotti
By
Ecosystems Mission Area, Great Lakes Science Center

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...
Authors
Edward Roseman, Gregory W. Kennedy, Bruce A. Manny, James C. Boase, James McFee
By
Ecosystems Mission Area, Great Lakes Science Center

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...
By
Great Lakes Science Center

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...
By
Water Resources Mission Area, Great Lakes Science Center

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...
By
Water Resources Mission Area, Great Lakes Science Center

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...
By
Great Lakes Science Center

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...
By
Great Lakes Science Center

Water Depths and Velocities at Fish Egg Sampling Sites in the St. Clair-Detroit River System, 2005-2016

This dataset contains depths and bottom velocities at discreet sampling locations in the St. Clair-Detroit River System. Measurements were made to complement data on fish egg deposition in the St. Clair-Detroit Rivers from 2005-2016. Depth measurements were made with a boat mounted sonar unit at the beginning of spring and fall sampling season from 2005-2016. Water velocities near the...
By
Great Lakes Science Center

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.
By
Great Lakes Science Center

Multimedia related to this scientist

A view of the shoreline with hills and a navigation light from the stern of a vessel on Lake Michigan
Leland in the Rearview Mirror
Leland in the Rearview Mirror
A view of the shoreline with hills and a navigation light from the stern of a vessel on Lake Michigan

Leland in the Rearview Mirror

Leland in the Rearview Mirror

The R/V Sculpin II departing the Leland harbor for a day on Lake Michigan tending acoustic telemetry fish-tracking arrays. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center
A view of the shoreline with hills and a navigation light from the stern of a vessel on Lake Michigan

Leland in the Rearview Mirror

Leland in the Rearview Mirror

The R/V Sculpin II departing the Leland harbor for a day on Lake Michigan tending acoustic telemetry fish-tracking arrays. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center
Researcher winch in a grapnel hook on a small vessel while retrieving an acoustic instrument
Happy Hooking
Happy Hooking
Researcher winch in a grapnel hook on a small vessel while retrieving an acoustic instrument

Happy Hooking

Happy Hooking

Retrieval of a submerged acoustic telemetry receiver by USGS biological science technicians (GLSC; Ann Arbor, Michigan) from offshore waters of Lake Michigan, using a grapnel drag to hook a 'snag' line attached to the mooring. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center
Researcher winch in a grapnel hook on a small vessel while retrieving an acoustic instrument

Happy Hooking

Happy Hooking

Retrieval of a submerged acoustic telemetry receiver by USGS biological science technicians (GLSC; Ann Arbor, Michigan) from offshore waters of Lake Michigan, using a grapnel drag to hook a 'snag' line attached to the mooring. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center
SCUBA diving off the R/V Stonecat in Lake Ontario
Backward Roll
Backward Roll
SCUBA diving off the R/V Stonecat in Lake Ontario

Backward Roll

Backward Roll

USGS Great Lakes Science Center dive team doing a backward roll off the R/V Stonecat to collect lake-bottom samples and retrieve instruments in Lake Ontario. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center
SCUBA diving off the R/V Stonecat in Lake Ontario

Backward Roll

Backward Roll

USGS Great Lakes Science Center dive team doing a backward roll off the R/V Stonecat to collect lake-bottom samples and retrieve instruments in Lake Ontario. Photo credit: Greg Kennedy, USGS.

By
Great Lakes Science Center

News about this scientist

GLSC presents at AFS Larval Fish Conference (Virtual) – Early Life History Section

GLSC presents at AFS Larval Fish Conference (Virtual) – Early Life History Section

American Fisheries Society Annual Larval Fish Conference Presentations

Read Article
Was this page helpful?