Douglas Appel
Douglas Appel
Professional Experience
2018-present, Biologist, Upper Midwest Environmental Sciences Center, US Geological Survey
2016-2018, Biological Science Technician, Midwest Fisheries Center, US Fish and Wildlife Service
2015, Biological Science Technician, Marquette Biological Station, US Fish and Wildlife Service
Education and Certifications
M.S. 2019, Aquatic Sciences, University of Wisconsin - La Crosse
B.S. 2014, Biology, University of Wisconsin - La Crosse
Science and Products
Data release for an experimental translocation of invasive bigheaded carps and upstream passage success at a navigation lock
This dataset accompanies the article 'Upstream experience and experimental translocation of invasive bigheaded carps results in increased upstream passage success at a navigation lock in a large river'. The data come from the experimental capture and tagging of invasive bigheaded carp with acoustic transmitters and physically moving some groups farther downstream. These transmitters emit signals t
Data Release for Multimodal Invasive Carp Deterrent Study at Barkley Lock and Dam: Status Update through 2022
The BioAcoustic Fish Fence (BAFF; Fish Guidance Systems Ltd.) is a multi-modal deterrent that utilizes a combination of lights, sound, and bubbles to guide fish away from a location. An experimental deployment of a BAFF is currently ongoing at Barkley Lock and Dam on the Cumberland River near Grand Rivers, KY. This dataset includes information derived from two telemetry arrays (i.e., VEMCO and HTI
Data Release for Lock 19 Underwater Acoustic Deterrent System (UADS) Study: Interim Project Update
The Underwater Acoustic Deterrent System is an experimental deterrent that utilizes underwater sounds to deter invasive carps. An experimental deployment and evaluation of a UADS is currently being conducted at Lock 19 on the Mississippi River, near Keokuk, Iowa. This dataset includes information derived from two telemetry arrays (i.e., 307 kHz HTI and 69 kHz VEMCO) deployed at and around Lock 19
2017-2019 Telemetry data for invasive carp and paddlefish surrounding Lock and Dam 15 in the Upper Mississippi River Basin
This dataset includes information derived from a Vemco telemetry array located at Lock and Dam 15 on the Mississippi River near Rock Island, IL and a longitudinal telemetry array that ranges from Pool 14 to Pool 19. Silver carp, bighead carp, and paddlefish were detected with this system. Lock Queue Reports, which detail the daily lock operation for river traffic, were obtained from the U.S. Army
Upstream experience and experimental translocation of invasive bigheaded carps results in increased upstream passage success at a navigation lock in a large river
Fish movements in regulated rivers can be challenging to study because anthropogenic modifications, such as locks and dams, can influence animal behavior. Upper Mississippi River Lock and Dam 19 (LD 19), for example, is an invasive carp movement bottleneck due to an impassable dam. Upstream fish passage at LD19 is restricted to the lock chamber, making it an optimal location to test invasive fish
Authors
Andrea K. Fritts, Daniel Gibson-Reinemer, Brent Knights, Amanda S. Milde, Jessica C. Stanton, Marybeth K. Brey, Douglas Appel, Aaron R. Cupp, Sarah Tripp, James T. Lamer, Mark W. Fritts
Multimodal invasive carp deterrent study at Barkley Lock and Dam—Status update through 2022
Invasive carp (Hypophthalmichthys nobilis [Bighead Carp], Mylopharyngodon piceus [Black Carp], Ctenopharyngodon idella [Grass Carp], and H. molitrix [Silver Carp]) continue to spread in the United States and deterrents at river navigation locks are one emerging control strategy for slowing the spread. High-head navigation dams on large rivers serve as impediments to the upstream spread of these po
Authors
Andrea K. Fritts, Daniel Gibson-Reinemer, Jessica C. Stanton, Kyle Mosel, Marybeth K. Brey, Jonathan M. Vallazza, Douglas Appel, Jacob Faulkner, Joshua Tompkins, Theodore Castro-Santos, Matthew Sholtis, Andy Turnpenny, Peter Sorensen, Rob Simmonds
USGS Telemetry Project
No abstract available.
Authors
Marybeth K. Brey, Brent C. Knights, Jessica Stanton, Sean Bailey, Travis J. Harrison, Douglas Appel, Andrea K. Fritts, James J. Duncker, P. Ryan Jackson
Hydrological and lock operation conditions associated with paddlefish and bigheaded carp dam passage on a large and small scale in the Upper Mississippi River (Pools 14–18)
Movement and dispersal of migratory fish species is an important life-history characteristics that can be impeded by navigation dams. Although habitat fragmentation may be detrimental to native fish species, it might act as an effective and economical barrier for controlling the spread of invasive species in riverine systems. Various technologies have been proposed as potential fish deterrents at
Authors
Dominique D. Turney, Andrea K. Fritts, Brent C. Knights, Jonathan M. Vallazza, Douglas Appel, James T. Lamar
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 refine fishing
Authors
Marybeth K. Brey, Brent C. Knights, P. Ryan Jackson, Jessica C. Stanton, Douglas Appel, James J. Duncker, Andrea K. Fritts
USGS Telemetry Project
Telemetry of acoustically tagged bigheaded carp (i.e., bighead carp Hypophthalmichthys nobilis and silver carp H. molitrix) and surrogate fish species has become an invaluable tool in management for these species in the upper Illinois Waterway Systems (i.e., upper Illinois River, lower Des Plaines River, and Chicago Area Waterway System). For example, movement probabilities between adjacent naviga
Authors
Brent C. Knights, Marybeth K. Brey, Jessica C. Stanton, Travis J. Harrison, Douglas Appel, Enrika Hlavacek, James J. Duncker
USGS real-time telemetry in support of management
No abstract available.
Authors
Brent C. Knights, Marybeth K. Brey, Douglas Appel, Travis J. Harrison, James J. Duncker
Science and Products
Data release for an experimental translocation of invasive bigheaded carps and upstream passage success at a navigation lock
This dataset accompanies the article 'Upstream experience and experimental translocation of invasive bigheaded carps results in increased upstream passage success at a navigation lock in a large river'. The data come from the experimental capture and tagging of invasive bigheaded carp with acoustic transmitters and physically moving some groups farther downstream. These transmitters emit signals t
Data Release for Multimodal Invasive Carp Deterrent Study at Barkley Lock and Dam: Status Update through 2022
The BioAcoustic Fish Fence (BAFF; Fish Guidance Systems Ltd.) is a multi-modal deterrent that utilizes a combination of lights, sound, and bubbles to guide fish away from a location. An experimental deployment of a BAFF is currently ongoing at Barkley Lock and Dam on the Cumberland River near Grand Rivers, KY. This dataset includes information derived from two telemetry arrays (i.e., VEMCO and HTI
Data Release for Lock 19 Underwater Acoustic Deterrent System (UADS) Study: Interim Project Update
The Underwater Acoustic Deterrent System is an experimental deterrent that utilizes underwater sounds to deter invasive carps. An experimental deployment and evaluation of a UADS is currently being conducted at Lock 19 on the Mississippi River, near Keokuk, Iowa. This dataset includes information derived from two telemetry arrays (i.e., 307 kHz HTI and 69 kHz VEMCO) deployed at and around Lock 19
2017-2019 Telemetry data for invasive carp and paddlefish surrounding Lock and Dam 15 in the Upper Mississippi River Basin
This dataset includes information derived from a Vemco telemetry array located at Lock and Dam 15 on the Mississippi River near Rock Island, IL and a longitudinal telemetry array that ranges from Pool 14 to Pool 19. Silver carp, bighead carp, and paddlefish were detected with this system. Lock Queue Reports, which detail the daily lock operation for river traffic, were obtained from the U.S. Army
Upstream experience and experimental translocation of invasive bigheaded carps results in increased upstream passage success at a navigation lock in a large river
Fish movements in regulated rivers can be challenging to study because anthropogenic modifications, such as locks and dams, can influence animal behavior. Upper Mississippi River Lock and Dam 19 (LD 19), for example, is an invasive carp movement bottleneck due to an impassable dam. Upstream fish passage at LD19 is restricted to the lock chamber, making it an optimal location to test invasive fish
Authors
Andrea K. Fritts, Daniel Gibson-Reinemer, Brent Knights, Amanda S. Milde, Jessica C. Stanton, Marybeth K. Brey, Douglas Appel, Aaron R. Cupp, Sarah Tripp, James T. Lamer, Mark W. Fritts
Multimodal invasive carp deterrent study at Barkley Lock and Dam—Status update through 2022
Invasive carp (Hypophthalmichthys nobilis [Bighead Carp], Mylopharyngodon piceus [Black Carp], Ctenopharyngodon idella [Grass Carp], and H. molitrix [Silver Carp]) continue to spread in the United States and deterrents at river navigation locks are one emerging control strategy for slowing the spread. High-head navigation dams on large rivers serve as impediments to the upstream spread of these po
Authors
Andrea K. Fritts, Daniel Gibson-Reinemer, Jessica C. Stanton, Kyle Mosel, Marybeth K. Brey, Jonathan M. Vallazza, Douglas Appel, Jacob Faulkner, Joshua Tompkins, Theodore Castro-Santos, Matthew Sholtis, Andy Turnpenny, Peter Sorensen, Rob Simmonds
USGS Telemetry Project
No abstract available.
Authors
Marybeth K. Brey, Brent C. Knights, Jessica Stanton, Sean Bailey, Travis J. Harrison, Douglas Appel, Andrea K. Fritts, James J. Duncker, P. Ryan Jackson
Hydrological and lock operation conditions associated with paddlefish and bigheaded carp dam passage on a large and small scale in the Upper Mississippi River (Pools 14–18)
Movement and dispersal of migratory fish species is an important life-history characteristics that can be impeded by navigation dams. Although habitat fragmentation may be detrimental to native fish species, it might act as an effective and economical barrier for controlling the spread of invasive species in riverine systems. Various technologies have been proposed as potential fish deterrents at
Authors
Dominique D. Turney, Andrea K. Fritts, Brent C. Knights, Jonathan M. Vallazza, Douglas Appel, James T. Lamar
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 refine fishing
Authors
Marybeth K. Brey, Brent C. Knights, P. Ryan Jackson, Jessica C. Stanton, Douglas Appel, James J. Duncker, Andrea K. Fritts
USGS Telemetry Project
Telemetry of acoustically tagged bigheaded carp (i.e., bighead carp Hypophthalmichthys nobilis and silver carp H. molitrix) and surrogate fish species has become an invaluable tool in management for these species in the upper Illinois Waterway Systems (i.e., upper Illinois River, lower Des Plaines River, and Chicago Area Waterway System). For example, movement probabilities between adjacent naviga
Authors
Brent C. Knights, Marybeth K. Brey, Jessica C. Stanton, Travis J. Harrison, Douglas Appel, Enrika Hlavacek, James J. Duncker
USGS real-time telemetry in support of management
No abstract available.
Authors
Brent C. Knights, Marybeth K. Brey, Douglas Appel, Travis J. Harrison, James J. Duncker