Bruce A Manny (Former Employee)
Science and Products
Filter Total Items: 63
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
Construction of shipping channels in the Detroit River: History and environmental consequences
The Detroit River is one of the most biologically diverse areas in the Great Lakes basin. It has been an important international shipping route since the 1820s and is one of the busiest navigation centers in the United States. Historically, it supported one of the most profitable Lake Whitefish (Coregonus clupeaformis) commercial fisheries in the Great Lakes. Since 1874, the lower Detroit River ha
Authors
David H. Bennion, Bruce A. Manny
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
Spawning by walleye (Sander vitreus) and white sucker (Catostomus commersoni) in the Detroit River: Implications for spawning habitat enhancement
Few active fish spawning grounds have been found in channels connecting the Great Lakes. Here, we describe one near Belle Isle in the Detroit River, part of the channel connecting lakes Huron and Erie. There, in 2005, we collected 1,573 fish eggs, cultured them, and identified the hatched larvae as walleye (Sander vitreus) and white sucker (Catostomus commersoni). Walleye spawning peaked during th
Authors
B.A. Manny, G.W. Kennedy, J.C. Boase, J.D. Allen, E.F. Roseman
First evidence of egg deposition by walleye (Sander vitreus) in the Detroit River
The importance of fish spawning habitat in channels connecting the Great Lakes to fishery productivity in those lakes is poorly understood and has not been adequately documented. The Detroit River is a reputed spawning and nursery area for many fish, including walleye (Sander vitreus) that migrate between adjacent Lakes Erie and St. Clair. During April–May 2004, near the head of the Detroit River,
Authors
B.A. Manny, G.W. Kennedy, J.D. Allen, J. R. P. French
Evidence of lake whitefish spawning in the Detroit River: Implications for habitat and population recovery
Historic reports imply that the lower Detroit River was once a prolific spawning area for lake whitefish (Coregonus clupeaformis) prior to the construction of the Livingstone shipping channel in 1911. Large numbers of lake whitefish migrated into the river in fall where they spawned on expansive limestone bedrock and gravel bars. Lake whitefish were harvested in the river during this time by comme
Authors
E.F. Roseman, G.W. Kennedy, J. Boase, B.A. Manny, T. N. Todd, W. Stott
Restoration of wildcelery, Vallisneria americana Michx., in the lower Detroit River of the Lake Huron-Lake Erie Corridor
American wildcelery (Vallisneria americana Michx.) is a valuable submersed aquatic plant that was negatively affected by pollution and urban runoff in the lower Detroit River for much of the 20th century. Following 25 years of water-pollution and urban-runoff abatement initiated in the early 1970s, we postulated that water clarity had increased and that this would allow restoration of wildcelery i
Authors
D. W. Schloesser, B.A. Manny
Spawning by lake sturgeon (Acipenser fulvescens) in the Detroit River
Overfishing and habitat destruction in the early 1900s devastated lake sturgeon (Acipenser fulvescens) populations in the Great Lakes. Although a comprehensive restoration strategy for this species was recently drafted by the Michigan Department of Natural Resources, a lack of current data on Great Lakes sturgeon stocks has hindered rehabilitation efforts. Historically, the Detroit River supported
Authors
N.M. Caswell, D. L. Peterson, B.A. Manny, G.W. Kennedy
Starvation resistance in lake trout fry
Newly hatched fry were acclimated to 7 or 12°C and either fed daily (controls) or denied food for varying lengths of time and then fed daily until the end of the study (day 91 at 7°C and day 43 at 12°C). Growth was reduced by delays in the onset of feeding of 27 or more days at 7°C and 7 or more days at 12°C. Mortality of fry unfed for more than 34 days at 7°C, or more than 21 days at 12°C, was hi
Authors
Thomas A. Edsall, Bruce A. Manny, Gregory W. Kennedy
Setting priorities for conserving and rehabilitating Detroit River habitats
This chapter discusses habitat for wild animals and plants in the Detroit River. Such habitat has been defined as places in the river where physical, chemical, and biological factors, including soil and water quality sustain all life stages of fish and wildlife, including their reproduction.
Authors
Bruce A. Manny
Known lake sturgeon (Acipenser fulvescens) spawning habitat in the channel between lakes Huron and Erie in the Laurentian Great Lakes
Bottom substrates and overlying water at three sites where lake sturgeon were reported by others to spawn in the 160-km channel between lakes Huron and Erie were surveyed by boat just before or after the exact time of spawning in 2001 to determine the kinds of substrates present and differences in water quality at the sites. Substrates, examined and photographed using a high-resolution, underwater
Authors
B.A. Manny, G.W. Kennedy
Changes in the bottom fauna of western Lake Erie
The bottom fauna of western Lake Erie has changed dramatically over the past 50 years in response to environmental degradation and biological invasions. In 1953, low dissolved oxygen reduced the biodiversity of that fauna, especially burrowing mayflies and freshwater mussels (Unionidae). Canada and the United States signed the Great Lakes Water Quality Agreement in 1972. By 1982, over 7 billion
Authors
Bruce A. Manny, D. W. Schloesser
Science and Products
Filter Total Items: 63
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
Construction of shipping channels in the Detroit River: History and environmental consequences
The Detroit River is one of the most biologically diverse areas in the Great Lakes basin. It has been an important international shipping route since the 1820s and is one of the busiest navigation centers in the United States. Historically, it supported one of the most profitable Lake Whitefish (Coregonus clupeaformis) commercial fisheries in the Great Lakes. Since 1874, the lower Detroit River ha
Authors
David H. Bennion, Bruce A. Manny
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
Spawning by walleye (Sander vitreus) and white sucker (Catostomus commersoni) in the Detroit River: Implications for spawning habitat enhancement
Few active fish spawning grounds have been found in channels connecting the Great Lakes. Here, we describe one near Belle Isle in the Detroit River, part of the channel connecting lakes Huron and Erie. There, in 2005, we collected 1,573 fish eggs, cultured them, and identified the hatched larvae as walleye (Sander vitreus) and white sucker (Catostomus commersoni). Walleye spawning peaked during th
Authors
B.A. Manny, G.W. Kennedy, J.C. Boase, J.D. Allen, E.F. Roseman
First evidence of egg deposition by walleye (Sander vitreus) in the Detroit River
The importance of fish spawning habitat in channels connecting the Great Lakes to fishery productivity in those lakes is poorly understood and has not been adequately documented. The Detroit River is a reputed spawning and nursery area for many fish, including walleye (Sander vitreus) that migrate between adjacent Lakes Erie and St. Clair. During April–May 2004, near the head of the Detroit River,
Authors
B.A. Manny, G.W. Kennedy, J.D. Allen, J. R. P. French
Evidence of lake whitefish spawning in the Detroit River: Implications for habitat and population recovery
Historic reports imply that the lower Detroit River was once a prolific spawning area for lake whitefish (Coregonus clupeaformis) prior to the construction of the Livingstone shipping channel in 1911. Large numbers of lake whitefish migrated into the river in fall where they spawned on expansive limestone bedrock and gravel bars. Lake whitefish were harvested in the river during this time by comme
Authors
E.F. Roseman, G.W. Kennedy, J. Boase, B.A. Manny, T. N. Todd, W. Stott
Restoration of wildcelery, Vallisneria americana Michx., in the lower Detroit River of the Lake Huron-Lake Erie Corridor
American wildcelery (Vallisneria americana Michx.) is a valuable submersed aquatic plant that was negatively affected by pollution and urban runoff in the lower Detroit River for much of the 20th century. Following 25 years of water-pollution and urban-runoff abatement initiated in the early 1970s, we postulated that water clarity had increased and that this would allow restoration of wildcelery i
Authors
D. W. Schloesser, B.A. Manny
Spawning by lake sturgeon (Acipenser fulvescens) in the Detroit River
Overfishing and habitat destruction in the early 1900s devastated lake sturgeon (Acipenser fulvescens) populations in the Great Lakes. Although a comprehensive restoration strategy for this species was recently drafted by the Michigan Department of Natural Resources, a lack of current data on Great Lakes sturgeon stocks has hindered rehabilitation efforts. Historically, the Detroit River supported
Authors
N.M. Caswell, D. L. Peterson, B.A. Manny, G.W. Kennedy
Starvation resistance in lake trout fry
Newly hatched fry were acclimated to 7 or 12°C and either fed daily (controls) or denied food for varying lengths of time and then fed daily until the end of the study (day 91 at 7°C and day 43 at 12°C). Growth was reduced by delays in the onset of feeding of 27 or more days at 7°C and 7 or more days at 12°C. Mortality of fry unfed for more than 34 days at 7°C, or more than 21 days at 12°C, was hi
Authors
Thomas A. Edsall, Bruce A. Manny, Gregory W. Kennedy
Setting priorities for conserving and rehabilitating Detroit River habitats
This chapter discusses habitat for wild animals and plants in the Detroit River. Such habitat has been defined as places in the river where physical, chemical, and biological factors, including soil and water quality sustain all life stages of fish and wildlife, including their reproduction.
Authors
Bruce A. Manny
Known lake sturgeon (Acipenser fulvescens) spawning habitat in the channel between lakes Huron and Erie in the Laurentian Great Lakes
Bottom substrates and overlying water at three sites where lake sturgeon were reported by others to spawn in the 160-km channel between lakes Huron and Erie were surveyed by boat just before or after the exact time of spawning in 2001 to determine the kinds of substrates present and differences in water quality at the sites. Substrates, examined and photographed using a high-resolution, underwater
Authors
B.A. Manny, G.W. Kennedy
Changes in the bottom fauna of western Lake Erie
The bottom fauna of western Lake Erie has changed dramatically over the past 50 years in response to environmental degradation and biological invasions. In 1953, low dissolved oxygen reduced the biodiversity of that fauna, especially burrowing mayflies and freshwater mussels (Unionidae). Canada and the United States signed the Great Lakes Water Quality Agreement in 1972. By 1982, over 7 billion
Authors
Bruce A. Manny, D. W. Schloesser