Patrick L Hudson, PhD
Patrick Hudson is a Scientist Emeritus based in Ann Arbor, MI.
Science and Products
Publications by this scientist
Filter Total Items: 40
Importance of nonindigenous harpacticoids (Crustacea: Copepoda) decrease with depth in Lake Ontario Importance of nonindigenous harpacticoids (Crustacea: Copepoda) decrease with depth in Lake Ontario
Harpacticoid copepods can be a substantial component of the meiobenthic community in lakes and serve an ecological role as detritivores. Here we present the first species-level lake-wide quantitative assessment of the harpacticoid assemblage of Lake Ontario with emphasis on the status of nonindigenous species. Additionally, we provide COI-5P sequences of harpacticoid taxa through Barcode...
Authors
Joe Connolly, Brian O’Malley, Patrick Hudson, James Watkins, Lyubov Burlakova, Lars Rudstam
First record of the non-indigenous parasitic copepod Neoergasilus japonicus (Harada, 1950) in the Lake Ontario Watershed: Oneida Lake, New York First record of the non-indigenous parasitic copepod Neoergasilus japonicus (Harada, 1950) in the Lake Ontario Watershed: Oneida Lake, New York
Four specimens of the Asiatic parasitic copepod Neoergasilus japonicus (Harada, 1930) were collected from Oneida Lake, New York in September 2018; one specimen was from a white sucker Catostomus commersonii, another from a green sunfish Lepomis cyanellus, and two from a bluegill Lepomis macrochirus. The four adult female specimens were found attached to the base of the gills of their...
Authors
Chris Marshall, Patrick Hudson, J. Jackson, Joe Connolly, Jim Watkins, Lars Rudstam
A multi-species synthesis of physiological mechanisms in drought-induced tree mortality A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
Widespread tree mortality associated with drought has been observed on all forested continents and global change is expected to exacerbate vegetation vulnerability. Forest mortality has implications for future biosphere–atmosphere interactions of carbon, water and energy balance, and is poorly represented in dynamic vegetation models. Reducing uncertainty requires improved mortality...
Authors
Henry D. Adams, Melanie Zeppel, William Anderegg, Henrik Hartmann, Simon Landhausser, David Tissue, Travis Huxman, Patrick Hudson, Trenton Franz, Craig Allen, Leander D. L. Anderegg, Greg Barron-Gafford, David Beerling, David Breshears, Timothy Brodribb, Harald Bugmann, Richard Cobb, Adam Collins, L. Dickman, Honglang Duan, Brent Ewers, Lucia Galiano, David Galvez, Nuria Garcia-Forner, Monica Gaylord, Matthew Germino, Arthur Gessler, Uwe Hacke, Rodrigo Hakamada, Andy Hector, Michael W. Jenkins, Jeffrey Kane, Thomas Kolb, Darin J. Law, James Lewis, Jean-Marc Limousin, David Love, Alison Macalady, Jordi Martínez-Vilalta, Maurizio Mencuccini, Patrick Mitchell, Jordan Muss, Michael O’Brien, Anthony O’Grady, Robert Pangle, Elizabeth Pinkard, Frida Piper, Jennifer Plaut, William Pockman, Joe Quirk, Keith Reinhardt, Francesco Ripullone, Michael G. Ryan, Anna Sala, Sanna Sevanto, John Sperry, Rodrigo Vargas, Michel Vennetier, Danielle Way, Chonggang Wu, Enrico Yepez, Nate McDowell
Eurytemora carolleeae in the Laurentian Great Lakes revealed by phylogenetic and morphological analysis Eurytemora carolleeae in the Laurentian Great Lakes revealed by phylogenetic and morphological analysis
In the Laurentian Great Lakes, specimens of Eurytemora have been reported asEurytemora affinis since its invasion in the late 1950s. During an intensive collection of aquatic invertebrates for morphological and molecular identification in Western Lake Erie in 2012-2013, several specimens of Eurytemora were collected. Analysis of these specimens identified them as the recently described...
Authors
Adrian A. Vasquez, Patrick Hudson, Masanori Fujimoto, Kevin Keeler, Patricia Dieter, Jeffrey Ram
Observations of cocooned Hydrobaenus (Diptera: Chironomidae) larvae in Lake Michigan Observations of cocooned Hydrobaenus (Diptera: Chironomidae) larvae in Lake Michigan
Larvae of the family Chironomidae have developed a variety of ways to tolerate environmental stress, including the formation of cocoons, which allows larvae to avoid unfavorable temperature conditions, drought, or competition with other chironomids. Summer cocoon formation by younger instars of the genus Hydrobaenus Fries allows persistence through increased temperatures and/or...
Authors
Taaja Tucker, Patrick Hudson, Stephen Riley
Morphological identification and COI barcodes of adult flies help determine species identities of chironomid larvae (Diptera, Chironomidae) Morphological identification and COI barcodes of adult flies help determine species identities of chironomid larvae (Diptera, Chironomidae)
Establishing reliable methods for the identification of benthic chironomid communities is important due to their significant contribution to biomass, ecology and the aquatic food web. Immature larval specimens are more difficult to identify to species level by traditional morphological methods than their fully developed adult counterparts, and few keys are available to identify the...
Authors
Andrew Failla, Adrian Vasquez, Patrick Hudson, Masanori Fujimoto, Jeffrey Ram
Additions to the aquatic diptera (Chaoboridae, Chironomidae, Culicidae, Tabanidae, Tipulidae) fauna of the White River National Wildlife Refuge, Arkansas Additions to the aquatic diptera (Chaoboridae, Chironomidae, Culicidae, Tabanidae, Tipulidae) fauna of the White River National Wildlife Refuge, Arkansas
The dipteran fauna of Arkansas is generally poorly known. A previous study of the Aquatic macroinvertebrates of the White River National Wildlife Refuge, the largest refuge in Arkansas, reported only 12 diptera taxa out of 219 taxa collected (Chordas et al., 1996). Most of the dipterans from this study were identified only to the family level. The family Chironomidae is a large, diverse...
Authors
Stephen Chordas, Patrick Hudson, Eric Chapman
Habitat selection by two species of burrowing mayfly nymphs in the Les Cheneaux Islands region of northern Lake Huron Habitat selection by two species of burrowing mayfly nymphs in the Les Cheneaux Islands region of northern Lake Huron
This study focused primarily on the habitat preferences of Hexagenia limbata andEphemera simulans, two species prevalent in northern Lake Huron, to gain a better understanding of the key components that determined their distribution and abundance. Both species preferred habitats based upon depth and sediment type. In addition, the burrowing activity of H. limbata was examined using in...
Authors
Marc Blouin, Patrick Hudson, Margret Chriscinske
Occurrence of Ergasilus megaceros Wilson, 1916, in the sea lamprey and other fishes from North America Occurrence of Ergasilus megaceros Wilson, 1916, in the sea lamprey and other fishes from North America
Ergasilus megaceros (Copepoda: Ergasilidae) was recovered from the nasal fossae (lamellae) of the olfactory sac in 1 (1.8%) of 56 sea lampreys, Petromyzon marinus Linne, 1758, collected in May 2002 from the Cheboygan River, Michigan. Although the sea lamprey is a new host record for E. megaceros, this fish species may not be a preferred host because of its low prevalence. Ergasilus...
Authors
Patrick Muzzall, Patrick Hudson
The Oligochaeta (Annelida, Clitellata) of the St. Lawrence Great Lakes region: An update The Oligochaeta (Annelida, Clitellata) of the St. Lawrence Great Lakes region: An update
An updated oligochaete species list for the Great Lakes region is provided. The list was developed through the reexamination of the taxa reported in a previous report in 1980, addition of new taxa or records collected from the region since 1980, and an update of taxonomy commensurate with systematic and nomenclatural changes over the intervening years since the last review. The authors...
Authors
Douglas Spencer, Patrick Hudson
Northwestward range extension for Diacyclops harryi (Crustacea: Copepoda) Northwestward range extension for Diacyclops harryi (Crustacea: Copepoda)
A recent find of the groundwater-inhabiting copepod crustacean Diacyclops harryi extended the known range of this species far northwestward, to include northern Ohio and the drainage basin of the Laurentian Great Lakes. The species was previously collected in drainages of the Atlantic Slope from New York to North Carolina. Ostracodes tentatively identified as ?Nannocandona n. sp., and...
Authors
Janet Reid, Patrick Hudson, Charles Bowen
Hydrologic variability and the application of Index of Biotic Integrity metrics to wetlands: a Great Lakes evaluation Hydrologic variability and the application of Index of Biotic Integrity metrics to wetlands: a Great Lakes evaluation
Interest by land-management and regulatory agencies in using biological indicators to detect wetland degradation, coupled with ongoing use of this approach to assess water quality in streams, led to the desire to develop and evaluate an Index of Biotic Integrity (IBI) for wetlands that could be used to categorize the level of degradation. We undertook this challenge with data from...
Authors
Douglas Wilcox, James Meeker, Patrick Hudson, Brian Armitage, M. Black, Donald Uzarski
Science and Products
Publications by this scientist
Filter Total Items: 40
Importance of nonindigenous harpacticoids (Crustacea: Copepoda) decrease with depth in Lake Ontario Importance of nonindigenous harpacticoids (Crustacea: Copepoda) decrease with depth in Lake Ontario
Harpacticoid copepods can be a substantial component of the meiobenthic community in lakes and serve an ecological role as detritivores. Here we present the first species-level lake-wide quantitative assessment of the harpacticoid assemblage of Lake Ontario with emphasis on the status of nonindigenous species. Additionally, we provide COI-5P sequences of harpacticoid taxa through Barcode...
Authors
Joe Connolly, Brian O’Malley, Patrick Hudson, James Watkins, Lyubov Burlakova, Lars Rudstam
First record of the non-indigenous parasitic copepod Neoergasilus japonicus (Harada, 1950) in the Lake Ontario Watershed: Oneida Lake, New York First record of the non-indigenous parasitic copepod Neoergasilus japonicus (Harada, 1950) in the Lake Ontario Watershed: Oneida Lake, New York
Four specimens of the Asiatic parasitic copepod Neoergasilus japonicus (Harada, 1930) were collected from Oneida Lake, New York in September 2018; one specimen was from a white sucker Catostomus commersonii, another from a green sunfish Lepomis cyanellus, and two from a bluegill Lepomis macrochirus. The four adult female specimens were found attached to the base of the gills of their...
Authors
Chris Marshall, Patrick Hudson, J. Jackson, Joe Connolly, Jim Watkins, Lars Rudstam
A multi-species synthesis of physiological mechanisms in drought-induced tree mortality A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
Widespread tree mortality associated with drought has been observed on all forested continents and global change is expected to exacerbate vegetation vulnerability. Forest mortality has implications for future biosphere–atmosphere interactions of carbon, water and energy balance, and is poorly represented in dynamic vegetation models. Reducing uncertainty requires improved mortality...
Authors
Henry D. Adams, Melanie Zeppel, William Anderegg, Henrik Hartmann, Simon Landhausser, David Tissue, Travis Huxman, Patrick Hudson, Trenton Franz, Craig Allen, Leander D. L. Anderegg, Greg Barron-Gafford, David Beerling, David Breshears, Timothy Brodribb, Harald Bugmann, Richard Cobb, Adam Collins, L. Dickman, Honglang Duan, Brent Ewers, Lucia Galiano, David Galvez, Nuria Garcia-Forner, Monica Gaylord, Matthew Germino, Arthur Gessler, Uwe Hacke, Rodrigo Hakamada, Andy Hector, Michael W. Jenkins, Jeffrey Kane, Thomas Kolb, Darin J. Law, James Lewis, Jean-Marc Limousin, David Love, Alison Macalady, Jordi Martínez-Vilalta, Maurizio Mencuccini, Patrick Mitchell, Jordan Muss, Michael O’Brien, Anthony O’Grady, Robert Pangle, Elizabeth Pinkard, Frida Piper, Jennifer Plaut, William Pockman, Joe Quirk, Keith Reinhardt, Francesco Ripullone, Michael G. Ryan, Anna Sala, Sanna Sevanto, John Sperry, Rodrigo Vargas, Michel Vennetier, Danielle Way, Chonggang Wu, Enrico Yepez, Nate McDowell
Eurytemora carolleeae in the Laurentian Great Lakes revealed by phylogenetic and morphological analysis Eurytemora carolleeae in the Laurentian Great Lakes revealed by phylogenetic and morphological analysis
In the Laurentian Great Lakes, specimens of Eurytemora have been reported asEurytemora affinis since its invasion in the late 1950s. During an intensive collection of aquatic invertebrates for morphological and molecular identification in Western Lake Erie in 2012-2013, several specimens of Eurytemora were collected. Analysis of these specimens identified them as the recently described...
Authors
Adrian A. Vasquez, Patrick Hudson, Masanori Fujimoto, Kevin Keeler, Patricia Dieter, Jeffrey Ram
Observations of cocooned Hydrobaenus (Diptera: Chironomidae) larvae in Lake Michigan Observations of cocooned Hydrobaenus (Diptera: Chironomidae) larvae in Lake Michigan
Larvae of the family Chironomidae have developed a variety of ways to tolerate environmental stress, including the formation of cocoons, which allows larvae to avoid unfavorable temperature conditions, drought, or competition with other chironomids. Summer cocoon formation by younger instars of the genus Hydrobaenus Fries allows persistence through increased temperatures and/or...
Authors
Taaja Tucker, Patrick Hudson, Stephen Riley
Morphological identification and COI barcodes of adult flies help determine species identities of chironomid larvae (Diptera, Chironomidae) Morphological identification and COI barcodes of adult flies help determine species identities of chironomid larvae (Diptera, Chironomidae)
Establishing reliable methods for the identification of benthic chironomid communities is important due to their significant contribution to biomass, ecology and the aquatic food web. Immature larval specimens are more difficult to identify to species level by traditional morphological methods than their fully developed adult counterparts, and few keys are available to identify the...
Authors
Andrew Failla, Adrian Vasquez, Patrick Hudson, Masanori Fujimoto, Jeffrey Ram
Additions to the aquatic diptera (Chaoboridae, Chironomidae, Culicidae, Tabanidae, Tipulidae) fauna of the White River National Wildlife Refuge, Arkansas Additions to the aquatic diptera (Chaoboridae, Chironomidae, Culicidae, Tabanidae, Tipulidae) fauna of the White River National Wildlife Refuge, Arkansas
The dipteran fauna of Arkansas is generally poorly known. A previous study of the Aquatic macroinvertebrates of the White River National Wildlife Refuge, the largest refuge in Arkansas, reported only 12 diptera taxa out of 219 taxa collected (Chordas et al., 1996). Most of the dipterans from this study were identified only to the family level. The family Chironomidae is a large, diverse...
Authors
Stephen Chordas, Patrick Hudson, Eric Chapman
Habitat selection by two species of burrowing mayfly nymphs in the Les Cheneaux Islands region of northern Lake Huron Habitat selection by two species of burrowing mayfly nymphs in the Les Cheneaux Islands region of northern Lake Huron
This study focused primarily on the habitat preferences of Hexagenia limbata andEphemera simulans, two species prevalent in northern Lake Huron, to gain a better understanding of the key components that determined their distribution and abundance. Both species preferred habitats based upon depth and sediment type. In addition, the burrowing activity of H. limbata was examined using in...
Authors
Marc Blouin, Patrick Hudson, Margret Chriscinske
Occurrence of Ergasilus megaceros Wilson, 1916, in the sea lamprey and other fishes from North America Occurrence of Ergasilus megaceros Wilson, 1916, in the sea lamprey and other fishes from North America
Ergasilus megaceros (Copepoda: Ergasilidae) was recovered from the nasal fossae (lamellae) of the olfactory sac in 1 (1.8%) of 56 sea lampreys, Petromyzon marinus Linne, 1758, collected in May 2002 from the Cheboygan River, Michigan. Although the sea lamprey is a new host record for E. megaceros, this fish species may not be a preferred host because of its low prevalence. Ergasilus...
Authors
Patrick Muzzall, Patrick Hudson
The Oligochaeta (Annelida, Clitellata) of the St. Lawrence Great Lakes region: An update The Oligochaeta (Annelida, Clitellata) of the St. Lawrence Great Lakes region: An update
An updated oligochaete species list for the Great Lakes region is provided. The list was developed through the reexamination of the taxa reported in a previous report in 1980, addition of new taxa or records collected from the region since 1980, and an update of taxonomy commensurate with systematic and nomenclatural changes over the intervening years since the last review. The authors...
Authors
Douglas Spencer, Patrick Hudson
Northwestward range extension for Diacyclops harryi (Crustacea: Copepoda) Northwestward range extension for Diacyclops harryi (Crustacea: Copepoda)
A recent find of the groundwater-inhabiting copepod crustacean Diacyclops harryi extended the known range of this species far northwestward, to include northern Ohio and the drainage basin of the Laurentian Great Lakes. The species was previously collected in drainages of the Atlantic Slope from New York to North Carolina. Ostracodes tentatively identified as ?Nannocandona n. sp., and...
Authors
Janet Reid, Patrick Hudson, Charles Bowen
Hydrologic variability and the application of Index of Biotic Integrity metrics to wetlands: a Great Lakes evaluation Hydrologic variability and the application of Index of Biotic Integrity metrics to wetlands: a Great Lakes evaluation
Interest by land-management and regulatory agencies in using biological indicators to detect wetland degradation, coupled with ongoing use of this approach to assess water quality in streams, led to the desire to develop and evaluate an Index of Biotic Integrity (IBI) for wetlands that could be used to categorize the level of degradation. We undertook this challenge with data from...
Authors
Douglas Wilcox, James Meeker, Patrick Hudson, Brian Armitage, M. Black, Donald Uzarski