Gregory W Kennedy
Gregory Kennedy is a Supervisory Fisheries Biologist based in Ann Arbor, MI.
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Use of remote-sensing techniques to survey the physical habitat of large rivers
Remote-sensing techniques that can be used to quantitatively characterize the physical habitat in large rivers in the United States where traditional survey approaches typically used in small- and medium-sized streams and rivers would be ineffective or impossible to apply. The state-of-the-art remote-sensing technologies that we discuss here include side-scan sonar, RoxAnn, acoustic Doppler curre
Authors
Thomas A. Edsall, Thomas E. Behrendt, Gary Cholwek, Jeffery W. Frey, Gregory W. Kennedy, Stephen B. Smith
Potential spawning habitat for lake trout on Julian's Reef, Lake Michigan
Julian's Reef is an historical spawning ground for lake trout (Salvelinus namaycush) in southwestern Lake Michigan. It is a designated lake trout refuge and is the focus of lake trout restoration efforts in Illinois waters of the lake. We studied the reef to determine its potential as spawning habitat for stocked lake trout. We used side-scan sonar and a remotely operated vehicle equipped with a v
Authors
Thomas A. Edsall, Gregory W. Kennedy
Patterns of egg deposition by lake trout and lake whitefish at Tawas artificial Reef, Lake Huron, 1990-1993
In August 1987, the Michigan Department of Natural Resources (MDNR), with the help and co-sponsorship of Walleyes for Iosco County, constructed Tawas artificial reef to improve recreational fishing in Tawas Bay. Post-construction assessment in October, 1987, by the MDNR found twice as many adult lake trout in a gill net set on the reef as in a similar net set off the reef, indicating that lake tr
Authors
N.R. Foster, G.W. Kennedy
Survival of lake trout eggs on reputed spawning grounds in Lakes Huron and Superior: In situ incubation, 1987-1988
Lake trout reproduce widely in Lake Superior but little in Lake Huron. We examined whether survival of lake trout eggs and fry in either lake was reduced by physical disturbances and swim-up mortality. Eggs were collected from feral lake trout in Lake Superior and placed in 108 plastic incubators. A total of 48 incubators was set at Partridge Island Reef in southern Lake Superior, 48 were set at P
Authors
Bruce A. Manny, Thomas A. Edsall, James W. Peck, Gregory W. Kennedy, Anthony M. Frank
An evaluation of lake trout reproductive habitat on Clay Banks Reef, northwestern Lake Michigan
The extinction of the native populations of lake trout (Salvelinus namaycush) in Lake Michigan in about 1956 has been followed by a decades-long attempt to reestablish self-sustaining populations of this valuable species in habitats it formerly occupied throughout the lake. One of the most recent management strategies designed to facilitate recovery was to make a primary management objective the e
Authors
Thomas A. Edsall, Mark E. Holey, Bruce A. Manny, Gregory W. Kennedy
Availability of lake trout reproductive habitat in the Great Lakes
A decades-long program to reestablish self-sustaining stocks of lake trout (Salvelinus namaycush) in the four lower Great Lakes produced excellent fisheries supported by stocked fish. These fish spawned widely and small numbers of their offspring were collected intermittently from Lakes Michigan, Huron, and Ontario, but no self-sustaining stocks were established. Irt this paper we address habitat
Authors
Thomas A. Edsall, Gregory W. Kennedy
Distribution, abundance, and resting microhabitat of burbot on Julian's Reef, southwestern Lake Michigan
We used a remotely operated submersible vehicle equipped with a color video camera to videotape the lake bed and document the distribution and abundance of burbot Lota lota on a 156‐hectare portion of Julianˈs Reef in southwestern Lake Michigan. The substrates and bathymetry of the study area had been mapped recently by side‐scan sonar. Burbot density determined from videotapes covering 6,900 m2 o
Authors
Thomas A. Edsall, Gregory W. Kennedy, William H. Horns
Lake trout spawning habitat in the Six Fathom Bank-Yankee Reef lake trout sanctuary, Lake Huron
Attempts to reestablish self-sustaining stocks of lake trout (Salvelinus namaycush) in the lower four Great Lakes, where the species was extinguished in the 1950s and 1960s, have been largely unsuccessful. To avoid many of the problems believed to be contributing to this failure, the fishery management community recently established several sanctuaries in the offshore waters of the Great Lakes whe
Authors
Thomas A. Edsall, Charles L. Brown, Gregory W. Kennedy, Thomas P. Poe
Surficial substrates and bathymetry of five historical lake trout spawning reefs in near-shore waters of the Great Lakes
The reestablishment of self-sustaining stocks of lake trout (Salvelinus namaycush) in the lower four Great Lakes has been substantially impeded because planted fish do not produce enough progeny that survive and reproduce. The causes for this failure are unknown, but many historical spawning sites of lake trout have been degraded by human activities and can no longer produce viable swim-up fry.
Authors
Thomas A. Edsall, Charles L. Brown, Gregory W. Kennedy, John R. P. French
ROV dives under Great Lakes ice
Observations of the underside of ice have a wide variety of applications. Severe under-ice roughness can affect ice movements, rough under-ice surfaces can scour the bottom disturbing biota and man-made structures such as pipelines, and the flow rate of rivers is often affected by under-ice roughness. A few reported observations of the underside of an ice cover have been made, usually by cutting
Authors
S. J. Bolsenga, John E. Gannon, Gregory Kennedy, D. C. North, Charles E. Herdendorf
Fishery research in the Great Lakes using a low-cost remotely operated vehicle
We used a MiniROVER MK II remotely operated vehicle (ROV) to collect ground-truth information on fish and their habitat in the Great Lakes that have traditionally been collected by divers, or with static cameras, or submersibles. The ROV, powered by 4 thrusters and controlled by the pilot at the surface, was portable and efficient to operate throughout the Great Lakes in 1987, and collected a tota
Authors
Gregory W. Kennedy, Charles L. Brown, Ray L. Argyle
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Filter Total Items: 35Use of remote-sensing techniques to survey the physical habitat of large rivers
Remote-sensing techniques that can be used to quantitatively characterize the physical habitat in large rivers in the United States where traditional survey approaches typically used in small- and medium-sized streams and rivers would be ineffective or impossible to apply. The state-of-the-art remote-sensing technologies that we discuss here include side-scan sonar, RoxAnn, acoustic Doppler curreAuthorsThomas A. Edsall, Thomas E. Behrendt, Gary Cholwek, Jeffery W. Frey, Gregory W. Kennedy, Stephen B. SmithPotential spawning habitat for lake trout on Julian's Reef, Lake Michigan
Julian's Reef is an historical spawning ground for lake trout (Salvelinus namaycush) in southwestern Lake Michigan. It is a designated lake trout refuge and is the focus of lake trout restoration efforts in Illinois waters of the lake. We studied the reef to determine its potential as spawning habitat for stocked lake trout. We used side-scan sonar and a remotely operated vehicle equipped with a vAuthorsThomas A. Edsall, Gregory W. KennedyPatterns of egg deposition by lake trout and lake whitefish at Tawas artificial Reef, Lake Huron, 1990-1993
In August 1987, the Michigan Department of Natural Resources (MDNR), with the help and co-sponsorship of Walleyes for Iosco County, constructed Tawas artificial reef to improve recreational fishing in Tawas Bay. Post-construction assessment in October, 1987, by the MDNR found twice as many adult lake trout in a gill net set on the reef as in a similar net set off the reef, indicating that lake trAuthorsN.R. Foster, G.W. KennedySurvival of lake trout eggs on reputed spawning grounds in Lakes Huron and Superior: In situ incubation, 1987-1988
Lake trout reproduce widely in Lake Superior but little in Lake Huron. We examined whether survival of lake trout eggs and fry in either lake was reduced by physical disturbances and swim-up mortality. Eggs were collected from feral lake trout in Lake Superior and placed in 108 plastic incubators. A total of 48 incubators was set at Partridge Island Reef in southern Lake Superior, 48 were set at PAuthorsBruce A. Manny, Thomas A. Edsall, James W. Peck, Gregory W. Kennedy, Anthony M. FrankAn evaluation of lake trout reproductive habitat on Clay Banks Reef, northwestern Lake Michigan
The extinction of the native populations of lake trout (Salvelinus namaycush) in Lake Michigan in about 1956 has been followed by a decades-long attempt to reestablish self-sustaining populations of this valuable species in habitats it formerly occupied throughout the lake. One of the most recent management strategies designed to facilitate recovery was to make a primary management objective the eAuthorsThomas A. Edsall, Mark E. Holey, Bruce A. Manny, Gregory W. KennedyAvailability of lake trout reproductive habitat in the Great Lakes
A decades-long program to reestablish self-sustaining stocks of lake trout (Salvelinus namaycush) in the four lower Great Lakes produced excellent fisheries supported by stocked fish. These fish spawned widely and small numbers of their offspring were collected intermittently from Lakes Michigan, Huron, and Ontario, but no self-sustaining stocks were established. Irt this paper we address habitatAuthorsThomas A. Edsall, Gregory W. KennedyDistribution, abundance, and resting microhabitat of burbot on Julian's Reef, southwestern Lake Michigan
We used a remotely operated submersible vehicle equipped with a color video camera to videotape the lake bed and document the distribution and abundance of burbot Lota lota on a 156‐hectare portion of Julianˈs Reef in southwestern Lake Michigan. The substrates and bathymetry of the study area had been mapped recently by side‐scan sonar. Burbot density determined from videotapes covering 6,900 m2 oAuthorsThomas A. Edsall, Gregory W. Kennedy, William H. HornsLake trout spawning habitat in the Six Fathom Bank-Yankee Reef lake trout sanctuary, Lake Huron
Attempts to reestablish self-sustaining stocks of lake trout (Salvelinus namaycush) in the lower four Great Lakes, where the species was extinguished in the 1950s and 1960s, have been largely unsuccessful. To avoid many of the problems believed to be contributing to this failure, the fishery management community recently established several sanctuaries in the offshore waters of the Great Lakes wheAuthorsThomas A. Edsall, Charles L. Brown, Gregory W. Kennedy, Thomas P. PoeSurficial substrates and bathymetry of five historical lake trout spawning reefs in near-shore waters of the Great Lakes
The reestablishment of self-sustaining stocks of lake trout (Salvelinus namaycush) in the lower four Great Lakes has been substantially impeded because planted fish do not produce enough progeny that survive and reproduce. The causes for this failure are unknown, but many historical spawning sites of lake trout have been degraded by human activities and can no longer produce viable swim-up fry.AuthorsThomas A. Edsall, Charles L. Brown, Gregory W. Kennedy, John R. P. FrenchROV dives under Great Lakes ice
Observations of the underside of ice have a wide variety of applications. Severe under-ice roughness can affect ice movements, rough under-ice surfaces can scour the bottom disturbing biota and man-made structures such as pipelines, and the flow rate of rivers is often affected by under-ice roughness. A few reported observations of the underside of an ice cover have been made, usually by cuttingAuthorsS. J. Bolsenga, John E. Gannon, Gregory Kennedy, D. C. North, Charles E. HerdendorfFishery research in the Great Lakes using a low-cost remotely operated vehicle
We used a MiniROVER MK II remotely operated vehicle (ROV) to collect ground-truth information on fish and their habitat in the Great Lakes that have traditionally been collected by divers, or with static cameras, or submersibles. The ROV, powered by 4 thrusters and controlled by the pilot at the surface, was portable and efficient to operate throughout the Great Lakes in 1987, and collected a totaAuthorsGregory W. Kennedy, Charles L. Brown, Ray L. Argyle - News
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