Brent Knights (Former Employee)
Science and Products
Otolith microchemistry and microstructure of age-0 silver carp for determining early-life environments and spawning periodicity in the Upper Mississippi River in 2016 Otolith microchemistry and microstructure of age-0 silver carp for determining early-life environments and spawning periodicity in the Upper Mississippi River in 2016
In 2016, for the first time, an abundance of age-0 silver carp (Hypophthalmichthys molitrix) were captured at several sites upstream of Lock and Dam 19 on the Upper Mississippi River near Keokuk, Iowa. These data were collected in an attempt to determine the early life environments and frequency and timing of the reproductive events that led to a large year class of age-0 silver carp...
Data for dam passage analysis of bigheaded carps in Pools 15-19 of the upper Mississippi River during 2014-2017 Data for dam passage analysis of bigheaded carps in Pools 15-19 of the upper Mississippi River during 2014-2017
Acoustic telemetry data (Vemco, Inc) were collected on invasive silver carp (Hypophthalmichthys molitrix), bighead carp (H. nobilis) and their hybrids in the upper Mississippi River (navigation pools 15-19) to determine movement patterns and preferred habitats during September 2013 through November 2017. We consolidated these data into intervals of fish within-pool residency and...
Otolith microchemistry of adult bigheaded carp for determining early-life environments in the Upper Mississippi River 2016-2018 Otolith microchemistry of adult bigheaded carp for determining early-life environments in the Upper Mississippi River 2016-2018
Data set includes water Sr:Ca, Ba:Ca, and δ18O for the Mississippi River and tributaries, and otolith Sr:Ca, Ba:Ca, and δ18O data from bigheaded carp (Silver Carp and BIghead Carp) collected in navigation pools 16-19 of the Upper Mississippi River in 2016 to 2018. Bigheaded carp (Bighead Carp and Silver Carp) are invasive species in the US and have spread throughout most of the lower...
Food web fatty acids and stable isotopes in the Upper Mississippi River Basin 2013-2014: Data Food web fatty acids and stable isotopes in the Upper Mississippi River Basin 2013-2014: Data
This dataset includes information from multiple taxa collected from four main reaches in the Upper Mississippi River Basin, including La Grange reach of Illinois River, Pool 2 of Mississippi River, Pool 19 of Mississippi River, and the St. Croix River. Taxa include hydropsychid caddisflies, chironomids, hexagenia mayflies, threeridge mussels, mapleleaf mussels, Wabash pigtoe mussels...
Filter Total Items: 50
Lake Barkley BioAcoustic fish fence effectiveness study project status update Lake Barkley BioAcoustic fish fence effectiveness study project status update
No abstract available.
Authors
Rob Simmonds, Brent C. Knights, Andrea K. Fritts, Jessica C. Stanton, Marybeth K. Brey, Jonathan M. Vallazza
Real-time telemetry and multi-state modeling Real-time telemetry and multi-state modeling
This project will result in real-time data and other invasive carp movement information to inform realtime management decisions and refine the SEICarP model. FY 2022 funding will produce final transition probability estimates from the newly-developed Bayesian multi-state model, continue the maintenance of real-time telemetry to inform contingency actions, and produce a study plan to...
Authors
Marybeth K. Brey, Brent C. Knights, P. Ryan Jackson, Jessica C. Stanton, Douglas Appel, James J. Duncker, Andrea K. Fritts
Assessment of native fish passage through Brandon Road Lock and Dam, Des Plaines River, Illinois, using fin ray microchemistry Assessment of native fish passage through Brandon Road Lock and Dam, Des Plaines River, Illinois, using fin ray microchemistry
This study examined evidence of native fish passage through Brandon Road Lock and Dam (BRLD) on the Des Plaines River, Illinois, in light of proposed modifications to prevent the upstream passage of invasive carps. Direct evidence of upstream passage by native fishes at BRLD is lacking and could help to inform assessment of the impacts of barrier technology installation. Fin ray...
Authors
Claire E. Snyder, Devon C. Oliver, Brent C. Knights, Stephen M. Pescitelli, Gregory W. Whitledge
Emerging control strategies for integrated pest management of invasive carps Emerging control strategies for integrated pest management of invasive carps
Invasive carps are ecologically and economically problematic fish species in many large river basins in the United States and pose a threat to aquatic ecosystems throughout much of North America. Four species of invasive carps: black carp (Mylopharyngodon piceus), grass carp (Ctenopharyngodon idella), silver carp (Hypophthalmichthys molitrix) and bighead carp (Hypophthalmichthys nobilis)...
Authors
Aaron R. Cupp, Marybeth K. Brey, Robin D. Calfee, Duane Chapman, Richard A. Erickson, Jesse Robert Fischer, Andrea K. Fritts, Amy E. George, P. Ryan Jackson, Brent C. Knights, Gavin N. Saari, Patrick Kocovsky
Age-0 Silver Carp otolith microchemistry and microstructure reveal multiple early life environments and protracted spawning in the upper Mississippi River Age-0 Silver Carp otolith microchemistry and microstructure reveal multiple early life environments and protracted spawning in the upper Mississippi River
Silver Carp Hypophthalmichthys molitrix are highly mobile and fecund planktivorous cyprinids that have invaded much of the Mississippi River and are known to alter food webs and compete with native planktivores. In 2016, for the first time, an abundance of age-0 Silver Carp (n = 12,208; 16–231 mm) were captured at many (n = 11) sites upstream of Lock and Dam 19 on the upper Mississippi...
Authors
Jesse A. Williams, Gregory W. Whitledge, Brent C. Knights, Nicholas C. Bloomfield, James T. Lamer
Timing and hydrological conditions associated with bigheaded carp movement past navigation dams on the upper Mississippi river Timing and hydrological conditions associated with bigheaded carp movement past navigation dams on the upper Mississippi river
As the range of non-native bigheaded carps (Hypophthalmichthys spp.) continues to expand throughout river systems of the United States, managers are tasked with preventing or slowing the spread of these invasive species. Main stem navigation dams on the upper Mississippi River, long considered a deterrent to fish migration, may slow or prevent the spread of invasive fish species. As...
Authors
Jonathan M. Vallazza, Kayle J. Mosel, David M. Reineke, Ann L. Runstrom, James H. Larson, Brent C. Knights
Science and Products
Otolith microchemistry and microstructure of age-0 silver carp for determining early-life environments and spawning periodicity in the Upper Mississippi River in 2016 Otolith microchemistry and microstructure of age-0 silver carp for determining early-life environments and spawning periodicity in the Upper Mississippi River in 2016
In 2016, for the first time, an abundance of age-0 silver carp (Hypophthalmichthys molitrix) were captured at several sites upstream of Lock and Dam 19 on the Upper Mississippi River near Keokuk, Iowa. These data were collected in an attempt to determine the early life environments and frequency and timing of the reproductive events that led to a large year class of age-0 silver carp...
Data for dam passage analysis of bigheaded carps in Pools 15-19 of the upper Mississippi River during 2014-2017 Data for dam passage analysis of bigheaded carps in Pools 15-19 of the upper Mississippi River during 2014-2017
Acoustic telemetry data (Vemco, Inc) were collected on invasive silver carp (Hypophthalmichthys molitrix), bighead carp (H. nobilis) and their hybrids in the upper Mississippi River (navigation pools 15-19) to determine movement patterns and preferred habitats during September 2013 through November 2017. We consolidated these data into intervals of fish within-pool residency and...
Otolith microchemistry of adult bigheaded carp for determining early-life environments in the Upper Mississippi River 2016-2018 Otolith microchemistry of adult bigheaded carp for determining early-life environments in the Upper Mississippi River 2016-2018
Data set includes water Sr:Ca, Ba:Ca, and δ18O for the Mississippi River and tributaries, and otolith Sr:Ca, Ba:Ca, and δ18O data from bigheaded carp (Silver Carp and BIghead Carp) collected in navigation pools 16-19 of the Upper Mississippi River in 2016 to 2018. Bigheaded carp (Bighead Carp and Silver Carp) are invasive species in the US and have spread throughout most of the lower...
Food web fatty acids and stable isotopes in the Upper Mississippi River Basin 2013-2014: Data Food web fatty acids and stable isotopes in the Upper Mississippi River Basin 2013-2014: Data
This dataset includes information from multiple taxa collected from four main reaches in the Upper Mississippi River Basin, including La Grange reach of Illinois River, Pool 2 of Mississippi River, Pool 19 of Mississippi River, and the St. Croix River. Taxa include hydropsychid caddisflies, chironomids, hexagenia mayflies, threeridge mussels, mapleleaf mussels, Wabash pigtoe mussels...
Filter Total Items: 50
Lake Barkley BioAcoustic fish fence effectiveness study project status update Lake Barkley BioAcoustic fish fence effectiveness study project status update
No abstract available.
Authors
Rob Simmonds, Brent C. Knights, Andrea K. Fritts, Jessica C. Stanton, Marybeth K. Brey, Jonathan M. Vallazza
Real-time telemetry and multi-state modeling Real-time telemetry and multi-state modeling
This project will result in real-time data and other invasive carp movement information to inform realtime management decisions and refine the SEICarP model. FY 2022 funding will produce final transition probability estimates from the newly-developed Bayesian multi-state model, continue the maintenance of real-time telemetry to inform contingency actions, and produce a study plan to...
Authors
Marybeth K. Brey, Brent C. Knights, P. Ryan Jackson, Jessica C. Stanton, Douglas Appel, James J. Duncker, Andrea K. Fritts
Assessment of native fish passage through Brandon Road Lock and Dam, Des Plaines River, Illinois, using fin ray microchemistry Assessment of native fish passage through Brandon Road Lock and Dam, Des Plaines River, Illinois, using fin ray microchemistry
This study examined evidence of native fish passage through Brandon Road Lock and Dam (BRLD) on the Des Plaines River, Illinois, in light of proposed modifications to prevent the upstream passage of invasive carps. Direct evidence of upstream passage by native fishes at BRLD is lacking and could help to inform assessment of the impacts of barrier technology installation. Fin ray...
Authors
Claire E. Snyder, Devon C. Oliver, Brent C. Knights, Stephen M. Pescitelli, Gregory W. Whitledge
Emerging control strategies for integrated pest management of invasive carps Emerging control strategies for integrated pest management of invasive carps
Invasive carps are ecologically and economically problematic fish species in many large river basins in the United States and pose a threat to aquatic ecosystems throughout much of North America. Four species of invasive carps: black carp (Mylopharyngodon piceus), grass carp (Ctenopharyngodon idella), silver carp (Hypophthalmichthys molitrix) and bighead carp (Hypophthalmichthys nobilis)...
Authors
Aaron R. Cupp, Marybeth K. Brey, Robin D. Calfee, Duane Chapman, Richard A. Erickson, Jesse Robert Fischer, Andrea K. Fritts, Amy E. George, P. Ryan Jackson, Brent C. Knights, Gavin N. Saari, Patrick Kocovsky
Age-0 Silver Carp otolith microchemistry and microstructure reveal multiple early life environments and protracted spawning in the upper Mississippi River Age-0 Silver Carp otolith microchemistry and microstructure reveal multiple early life environments and protracted spawning in the upper Mississippi River
Silver Carp Hypophthalmichthys molitrix are highly mobile and fecund planktivorous cyprinids that have invaded much of the Mississippi River and are known to alter food webs and compete with native planktivores. In 2016, for the first time, an abundance of age-0 Silver Carp (n = 12,208; 16–231 mm) were captured at many (n = 11) sites upstream of Lock and Dam 19 on the upper Mississippi...
Authors
Jesse A. Williams, Gregory W. Whitledge, Brent C. Knights, Nicholas C. Bloomfield, James T. Lamer
Timing and hydrological conditions associated with bigheaded carp movement past navigation dams on the upper Mississippi river Timing and hydrological conditions associated with bigheaded carp movement past navigation dams on the upper Mississippi river
As the range of non-native bigheaded carps (Hypophthalmichthys spp.) continues to expand throughout river systems of the United States, managers are tasked with preventing or slowing the spread of these invasive species. Main stem navigation dams on the upper Mississippi River, long considered a deterrent to fish migration, may slow or prevent the spread of invasive fish species. As...
Authors
Jonathan M. Vallazza, Kayle J. Mosel, David M. Reineke, Ann L. Runstrom, James H. Larson, Brent C. Knights