• Publications
  • Influence
Lake Ontario: food web dynamics in a changing ecosystem (1970-2000)
We examined stressors that have led to profound ecological changes in the Lake Ontario ecosystem and its fish community since 1970. The most notable changes have been reductions in phosphorusExpand
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Changes in the Dreissenid Community in the Lower Great Lakes with Emphasis on Southern Lake Ontario
Abstract A field study was conducted in the lower Great Lakes to assess changes in spatial distribution and population structure of dreissenid mussel populations. More specifically, the westwardExpand
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Occurrence and Food Habits of the Round Goby in the Profundal Zone of Southwestern Lake Ontario
ABSTRACT Little is known about the ecology of round goby (Neogobius melanostomus), an invasive benthic fish, in the profundal zone of the Great Lakes. In April 2002–2005 we caught increasing numbersExpand
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Energy Density and Size of Pelagic Prey Fishes in Lake Ontario, 1978–1990: Implications for Salmonine Energetics
Abstract We describe dynamics of energy density and size of Lake Ontario alewife Alosa pseudoharengus and rainbow smelt Osmerus mordax, and we use a bioenergetics model of a common pelagic piscivore,Expand
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Sustainability of Hatchery-Dependent Salmonine Fisheries in Lake Ontario: The Conflict between Predator Demand and Prey Supply
Abstract The offshore fish community of Lake Ontario is presently dominated by intensively managed, nonnative species: Alewife Alosa pseudoharengus and rainbow smelt Osmerus mordax at the planktivoreExpand
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Food of the Alewife (Alosa pseudoharengus) in Lake Ontario before and after the Establishment of Bythotrephes cederstroemi
Diets and length–weight relationships of Lake Ontario alewife (Alosa pseudoharengus) in 1972 differed from those in 1988; the large cladoceran Bythotrephes cederstroemi colonized the lake during theExpand
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Lake Trout Rehabilitation in Lake Ontario
Attempts to maintain the native lake trout (Salvelinus namaycush) population in Lake Ontario by stocking fry failed and the species was extirpated by the 1950s. Hatchery fish stocked in the 1960s didExpand
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Shifts in Depth Distributions of Alewives, Rainbow Smelt, and Age-2 Lake Trout in Southern Lake Ontario following Establishment of Dreissenids
Abstract In the mid-1990s, biologists conducting assessments of fish stocks in Lake Ontario reported finding alewives Alosa pseudoharengus, rainbow smelt Osmerus mordax, and juvenile lake troutExpand
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Changes in the Nearshore and Offshore Zooplankton Communities in Lake Ontario: 1981–88
We examined trends and factors influencing changes in nearshore and offshore zooplankton abundance and composition in Lake Ontario between 1981 and 1988. In the nearshore (southshore and easternExpand
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Predation by sea lamprey (Petromyzon marinus) on lake trout (Salvelinus namaycush) in southern Lake Ontario, 1982-1992
Dead lake trout (Salvelinus namaycush) killed by sea lamprey ( Petromyzon marinus) were collected from the bottom of Lake Ontario using bottom trawls. The number of dead lake trout per hectare couldExpand
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