Christopher Guy, PhD (Former Employee)
Science and Products
Filter Total Items: 64
Use of cover habitat by bull trout, Salvelinus confluentus, and lake trout, Salvelinus namaycush, in a laboratory environment Use of cover habitat by bull trout, Salvelinus confluentus, and lake trout, Salvelinus namaycush, in a laboratory environment
Lacustrine-adfluvial bull trout, Salvelinus confluentus, migrate from spawning and rearing streams to lacustrine environments as early as age 0. Within lacustrine environments, cover habitat provides refuge from potential predators and is a resource that is competed for if limiting. Competitive interactions between bull trout and other species could result in bull trout being displaced...
Authors
Michael H. Meeuwig, Christopher S. Guy, Wade A. Fredenberg
Trophic relationships between a native and a nonnative predator in a system of natural lakes Trophic relationships between a native and a nonnative predator in a system of natural lakes
Bull trout, a species of char listed as threatened under the US Endangered Species Act, have been displaced from portions of their historic range following the introduction of nonnative lake trout. It has been suggested that competitive exclusion as a result of trophic overlap between bull trout and lake trout may be the causal mechanism associated with displacement of bull trout. This...
Authors
Michael H. Meeuwig, Christopher S. Guy, Wade A. Fedenberg
Diet overlap of top-level predators in recent sympatry: bull trout and nonnative lake trout Diet overlap of top-level predators in recent sympatry: bull trout and nonnative lake trout
The establishment of nonnative lake trout Salvelinus namaycush in lakes containing lacustrine–adfluvial bull trout Salvelinus confluentus often results in a precipitous decline in bull trout abundance. The exact mechanism for the decline is unknown, but one hypothesis is related to competitive exclusion for prey resources. We had the rare opportunity to study the diets of bull trout and...
Authors
Christopher S. Guy, Thomas E. McMahon, Wade A. Fredenberg, Clinton J. Smith, David W. Garfield, Benjamin S. Cox
Founding population size of an aquatic invasive species Founding population size of an aquatic invasive species
Non-native species of fish threaten native fishes throughout North America, and in the Rocky Mountains, introduced populations of lake trout threaten native populations of bull trout. Effective management of lake trout and other exotic species require understanding the dynamics of invasion in order to either suppress non-native populations or to prevent their spread. In this study, we...
Authors
Steven T. Kalinowski, Clint C. Muhlfeld, Christopher S. Guy, Benjamin Cox
Science and Products
Filter Total Items: 64
Use of cover habitat by bull trout, Salvelinus confluentus, and lake trout, Salvelinus namaycush, in a laboratory environment Use of cover habitat by bull trout, Salvelinus confluentus, and lake trout, Salvelinus namaycush, in a laboratory environment
Lacustrine-adfluvial bull trout, Salvelinus confluentus, migrate from spawning and rearing streams to lacustrine environments as early as age 0. Within lacustrine environments, cover habitat provides refuge from potential predators and is a resource that is competed for if limiting. Competitive interactions between bull trout and other species could result in bull trout being displaced...
Authors
Michael H. Meeuwig, Christopher S. Guy, Wade A. Fredenberg
Trophic relationships between a native and a nonnative predator in a system of natural lakes Trophic relationships between a native and a nonnative predator in a system of natural lakes
Bull trout, a species of char listed as threatened under the US Endangered Species Act, have been displaced from portions of their historic range following the introduction of nonnative lake trout. It has been suggested that competitive exclusion as a result of trophic overlap between bull trout and lake trout may be the causal mechanism associated with displacement of bull trout. This...
Authors
Michael H. Meeuwig, Christopher S. Guy, Wade A. Fedenberg
Diet overlap of top-level predators in recent sympatry: bull trout and nonnative lake trout Diet overlap of top-level predators in recent sympatry: bull trout and nonnative lake trout
The establishment of nonnative lake trout Salvelinus namaycush in lakes containing lacustrine–adfluvial bull trout Salvelinus confluentus often results in a precipitous decline in bull trout abundance. The exact mechanism for the decline is unknown, but one hypothesis is related to competitive exclusion for prey resources. We had the rare opportunity to study the diets of bull trout and...
Authors
Christopher S. Guy, Thomas E. McMahon, Wade A. Fredenberg, Clinton J. Smith, David W. Garfield, Benjamin S. Cox
Founding population size of an aquatic invasive species Founding population size of an aquatic invasive species
Non-native species of fish threaten native fishes throughout North America, and in the Rocky Mountains, introduced populations of lake trout threaten native populations of bull trout. Effective management of lake trout and other exotic species require understanding the dynamics of invasion in order to either suppress non-native populations or to prevent their spread. In this study, we...
Authors
Steven T. Kalinowski, Clint C. Muhlfeld, Christopher S. Guy, Benjamin Cox