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Pat Braaten, PhD (Former Employee)

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Female pallid sturgeon, PLS11-007, is released back into the Missouri River after an ultrasound evaluation

Comprehensive Sturgeon Research Project Blog - 2018

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

link

Comprehensive Sturgeon Research Project Blog - 2018

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

Learn More
link

Comprehensive Sturgeon Research Project Blog - 2021

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
By
Columbia Environmental Research Center
link

Comprehensive Sturgeon Research Project Blog - 2021

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
Learn More
link

Comprehensive Sturgeon Research Project Blog - 2020

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
By
Columbia Environmental Research Center
link

Comprehensive Sturgeon Research Project Blog - 2020

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
Learn More
link
USGS

Comprehensive Sturgeon Research Project Blog - 2019

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
By
Columbia Environmental Research Center
link

Comprehensive Sturgeon Research Project Blog - 2019

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
Learn More
link
USGS

Adult Pallid Sturgeon Reproductive Ecology

CERC fish biologists study migrations, reproductive cues, and spawning behaviors of reproductive wild and hatchery-origin pallid sturgeon (HOPS) in the Missouri River Basin.
By
Species Management Research Program, Columbia Environmental Research Center
link

Adult Pallid Sturgeon Reproductive Ecology

CERC fish biologists study migrations, reproductive cues, and spawning behaviors of reproductive wild and hatchery-origin pallid sturgeon (HOPS) in the Missouri River Basin.
Learn More
link
USGS

Comprehensive Sturgeon Research Project Blog - 2016

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

 

link

Comprehensive Sturgeon Research Project Blog - 2016

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

 

Learn More
link
Female pallid sturgeon, PLS11-007, is released back into the Missouri River after an ultrasound evaluation

Comprehensive Sturgeon Research Project (CSRP)

The Comprehensive Sturgeon Research Project (CSRP) is a multidisciplinary project conducted in cooperation with the U.S. Army Corps of Engineers, Missouri River Recovery Program–Integrated Science Program. CERC scientists are working with river scientists and man­agers to develop methods, baseline information, and research approaches that are critical contributions to recovery success of the...
By
Ecosystems Mission Area, Species Management Research Program, Columbia Environmental Research Center
link

Comprehensive Sturgeon Research Project (CSRP)

The Comprehensive Sturgeon Research Project (CSRP) is a multidisciplinary project conducted in cooperation with the U.S. Army Corps of Engineers, Missouri River Recovery Program–Integrated Science Program. CERC scientists are working with river scientists and man­agers to develop methods, baseline information, and research approaches that are critical contributions to recovery success of the...
Learn More
link
Female pallid sturgeon, PLS11-007, is released back into the Missouri River after an ultrasound evaluation

Comprehensive Sturgeon Research Project Blog - 2017

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

link

Comprehensive Sturgeon Research Project Blog - 2017

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

Learn More

Invertebrates enumerated from the diets of larval pallid sturgeon (Scaphirhynchus albus) and shovelnose sturgeon (S. platorynchus) in the Upper Missouri River, Montana and North Dakota in 2019

An inventory (enumeration and taxonomic identification) of diet items consumed by wild-caught larval pallid sturgeon and larval shovelnose sturgeon, based on the examination of gut contents from fish that were collected in the Upper Missouri River drainage of the U.S.
By
Columbia Environmental Research Center

Pallid sturgeon free embryo drift and dispersal experiment data from the Upper Missouri River, Montana and North Dakota, 2019

The data set contains sampling data, catch data, and biological data associated with a broad-scale experiment to examine free embryo dispersal and larval settlement of endangered pallid sturgeon (Scaphirhynchus albus) in the Missouri River of eastern Montana and western North Dakota. On 20190701, two age groups of pallid sturgeon including 771,707 1-day post-hatch (dph) free embryos and 200,786 5-
By
Columbia Environmental Research Center
Filter Total Items: 24

Dietary comparison of age-0 sturgeon (Scaphirhynchus sp.) between upper and lower Missouri River basins

Understanding potential limiting factors affecting population growth of the endangered pallid sturgeon, Scaphirhynchus albus, is important in the upper (UMOR) and lower Missouri River (LMOR) basins. The UMOR is upstream of several reservoirs and generally has more natural habitat features, whereas the LMOR is downstream of these reservoirs and has been channelized to support navigation. In both se
Authors
Alin González, James M. Long, Nathan J.C. Gosch, Anthony P. Civiello, Todd R. Gemeinhardt, Jerrod Hall, Patrick Braaten
By
Cooperative Research Units

Haploid gynogens facilitate disomic marker development in paleotetraploid sturgeons

Acipenseriformes (sturgeons and paddlefishes) are of substantial conservation concern, and development of genomic resources for these species is difficult due to past whole genome duplication. Development of disomic markers for polyploid organisms can be challenging due to difficulty in resolving alleles at a single locus from those among duplicated loci. In this study, we detail the development o
Authors
Richard Jr Flamio, Dominic G Swift, David S Portnoy, Kimberly Chojnacki, Aaron J. Delonay, Jeffrey Powell, Patrick Braaten, Edward J. Heist
By
Ecosystems Mission Area, Columbia Environmental Research Center

Diet composition and overlap of larval pallid sturgeon and shovelnose sturgeon from the upper Missouri River, USA

Early life stages of pallid sturgeon Scaphirhynchus albus are rarely collected, and thus information on their biology and ecology is extremely limited. We sampled 75 larval pallid sturgeon (25-110 mm) and 148 larval shovelnose sturgeon S. platorynchus (15-95 mm) by trawl from the upper Missouri River (USA) in 2019. Stomach contents were identified to compare food use and diet overlap between the 2
Authors
Colt Taylor Holley, Patrick Braaten, Barry Poulton, Edward J. Heist, Levi Umland, Tyler M. Haddix
By
Ecosystems Mission Area, Columbia Environmental Research Center

Growth and survival rates of dispersing free embryos and settled larvae of pallid sturgeon (Scaphirhynchus albus) in the Missouri River, Montana and North Dakota

We released nearly 1.0 million 1-day post-hatch (dph) and 5-dph pallid sturgeon (Scaphirhynchus albus) free embryos in the Missouri River on 1 July 2019 and sequentially captured survivors at multiple sites through a 240-km river reach to quantify daily growth and survival rates during the early life stages. Genetic analysis was used to assign captured fish to released family lots and known ages.
Authors
Patrick Braaten, R.J. Holm, J. A. Powell, E.J. Heist, Amy C. Buhman, Colt Taylor Holley, Aaron J. Delonay, T.M. Haddix, R.H. Wilson, R. B. Jacobson
By
Ecosystems Mission Area, Columbia Environmental Research Center

Catch rates for sturgeon chubs and sicklefin chubs in the Upper Missouri River 2004–2016 and correlations with biotic and abiotic variables

A multiweek standardized sampling regime during 2004–2016 in a 60-km reach of the Upper Missouri River assessed reproduction and catch rates for Sturgeon Chub Macrhybopsis gelida and Sicklefin Chub Macrhybopsis meeki. We sampled age-0 Macrhybopsis (primarily Sturgeon Chubs, but potentially including Sicklefin Chubs) all years to indicate successful reproduction, but noted an inverse correlation of
Authors
Patrick Braaten, David B. Fuller, Tyler M. Haddix, John R. Hunziker, Michael E. Colvin, Luke M. Holmquist, Ryan H. Wilson
By
Ecosystems Mission Area, Columbia Environmental Research Center

Improved genetic identification of acipenseriform embryos with application to the endangered pallid sturgeon Scaphirhynchus albus

We produced pallid sturgeon Scaphirhynchus albus embryos at five pre‐hatch developmental stages and isolated and quantified genomic DNA from four of the stages using four commercial DNA isolation kits. Genomic DNA prepared using the kit that produced the largest yields and concentrations were used for microsatellite DNA analyses of 10–20 embryos at each of the five developmental stages. We attempt
Authors
Tom Kashiwagi, Aaron J. Delonay, Patrick Braaten, Kimberly Chojnacki, Rachel M. Gocker, Edward J. Heist
By
Ecosystems Mission Area, Columbia Environmental Research Center

Evaluating flow management as a strategy to recover an endangered sturgeon species in the Upper Missouri River, USA

In the Upper Missouri River, Fort Peck and Garrison Dams limit the length of free‐flowing river available to the endangered pallid sturgeon. These barriers restrict the upstream migration of adults and downstream larval dispersal. A one‐dimensional (1D) modelling framework is currently in use to evaluate reservoir operation alternatives and to simulate drift of dispersing free embryos for differen
Authors
Susannah O. Erwin, Edward A. Bulliner, Craig J Fischenich, Robert B. Jacobson, Patrick Braaten, Aaron J. Delonay
By
Ecosystems Mission Area, Columbia Environmental Research Center

Status of knowledge of the Pallid Sturgeon (Scaphirhynchus albus Forbes and Richardson, 1905)

The Pallid Sturgeon is listed as federally endangered under the Endangered Species Act in the United States. When the species was listed in 1990 it was considered extremely rare and was poorly understood. Habitat alteration, commercial harvest, environmental contaminants, and other factors were identified as threats. Today our scientific understanding of the species and its life history requiremen
Authors
G. R. Jordan, E.J. Heist, Patrick Braaten, Aaron J. Delonay, P. Hartfield, D.P. Herzog, K.M. Kappenman, M.A.H. Web
By
Ecosystems Mission Area, Columbia Environmental Research Center

Ecological requirements for pallid sturgeon reproduction and recruitment in the Missouri River—Annual report 2014

The Comprehensive Sturgeon Research Project is a multiyear, multiagency collaborative research framework developed to provide information to support pallid sturgeon recovery and Missouri River management decisions. The project strategy integrates field and laboratory studies of sturgeon reproductive ecology, early life history, habitat requirements, and physiology. The project scope of work is dev
Authors
Aaron J. Delonay, Kimberly A. Chojnacki, Robert B. Jacobson, Patrick J. Braaten, Kevin J. Buhl, Caroline M. Elliott, Susannah O. Erwin, Jacob D.A. Faulkner, James S. Candrl, David B. Fuller, Kenneth M. Backes, Tyler M. Haddix, Matthew L. Rugg, Christopher J. Wesolek, Brandon L. Eder, Gerald E. Mestl
By
Ecosystems Mission Area, Columbia Environmental Research Center

Ecological requirements for pallid sturgeon reproduction and recruitment in the Missouri River—Annual report 2013

The Comprehensive Sturgeon Research Project is a multiyear, multiagency collaborative research framework developed to provide information to support pallid sturgeon recovery and Missouri River management decisions. The project strategy integrates field and laboratory studies of pallid sturgeon reproductive ecology, early life history, habitat requirements, and physiology. The project scope of work
Authors
Aaron J. Delonay, Robert B. Jacobson, Kimberly A. Chojnacki, Patrick J. Braaten, Kevin J. Buhl, Brandon L Eder, Caroline M. Elliott, Susannah O. Erwin, David B. Fuller, Tyler M. Haddix, Hallie L.A. Ladd, Gerald E. Mestl, Diana M. Papoulias, Jason C. Rhoten, Christopher J. Wesolek, Mark L. Wildhaber
By
Ecosystems Mission Area, Columbia Environmental Research Center

Ecological requirements for pallid sturgeon reproduction and recruitment in the Missouri River—A synthesis of science, 2005 to 2012

This report is intended to synthesize the state of the scientific understanding of pallid sturgeon ecological requirements to provide recommendations for future science directions and context for Missouri River restoration and management decisions. Recruitment of pallid sturgeon has been low to non-existent throughout its range. Emerging understanding of the genetic structure of pallid sturgeon po
Authors
Aaron J. Delonay, Kimberly A. Chojnacki, Robert B. Jacobson, Janice L. Albers, Patrick J. Braaten, Edward A. Bulliner, Caroline M. Elliott, Susannah O. Erwin, David B Fuller, Justin D. Haas, Hallie L.A. Ladd, Gerald E. Mestl, Diana M. Papoulias, Mark L. Wildhaber
By
Ecosystems Mission Area, Columbia Environmental Research Center

Age estimations of wild pallid sturgeon (Scaphirhynchus albus, Forbes & Richardson 1905) based on pectoral fin spines, otoliths and bomb radiocarbon: inferences on recruitment in the dam-fragmented Missouri River

An extant stock of wild pallid sturgeon Scaphirhynchus albus persists in the fragmented upper Missouri River basin of Montana and North Dakota. Although successful spawning and hatch of embryos has been verified, long-term catch records suggest that recruitment has not occurred for several decades as the extant stock lacks juvenile size classes and is comprised exclusively of large, presumably old
Authors
P. J. Braaten, S. E. Campana, D. B. Fuller, R. D. Lott, R. M. Bruch, G. R. Jordan
By
Ecosystems Mission Area, Columbia Environmental Research Center

Science and Products

link
Female pallid sturgeon, PLS11-007, is released back into the Missouri River after an ultrasound evaluation

Comprehensive Sturgeon Research Project Blog - 2018

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

link

Comprehensive Sturgeon Research Project Blog - 2018

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

Learn More
link

Comprehensive Sturgeon Research Project Blog - 2021

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
By
Columbia Environmental Research Center
link

Comprehensive Sturgeon Research Project Blog - 2021

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
Learn More
link

Comprehensive Sturgeon Research Project Blog - 2020

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
By
Columbia Environmental Research Center
link

Comprehensive Sturgeon Research Project Blog - 2020

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
Learn More
link
USGS

Comprehensive Sturgeon Research Project Blog - 2019

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
By
Columbia Environmental Research Center
link

Comprehensive Sturgeon Research Project Blog - 2019

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon.
Learn More
link
USGS

Adult Pallid Sturgeon Reproductive Ecology

CERC fish biologists study migrations, reproductive cues, and spawning behaviors of reproductive wild and hatchery-origin pallid sturgeon (HOPS) in the Missouri River Basin.
By
Species Management Research Program, Columbia Environmental Research Center
link

Adult Pallid Sturgeon Reproductive Ecology

CERC fish biologists study migrations, reproductive cues, and spawning behaviors of reproductive wild and hatchery-origin pallid sturgeon (HOPS) in the Missouri River Basin.
Learn More
link
USGS

Comprehensive Sturgeon Research Project Blog - 2016

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

 

link

Comprehensive Sturgeon Research Project Blog - 2016

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

 

Learn More
link
Female pallid sturgeon, PLS11-007, is released back into the Missouri River after an ultrasound evaluation

Comprehensive Sturgeon Research Project (CSRP)

The Comprehensive Sturgeon Research Project (CSRP) is a multidisciplinary project conducted in cooperation with the U.S. Army Corps of Engineers, Missouri River Recovery Program–Integrated Science Program. CERC scientists are working with river scientists and man­agers to develop methods, baseline information, and research approaches that are critical contributions to recovery success of the...
By
Ecosystems Mission Area, Species Management Research Program, Columbia Environmental Research Center
link

Comprehensive Sturgeon Research Project (CSRP)

The Comprehensive Sturgeon Research Project (CSRP) is a multidisciplinary project conducted in cooperation with the U.S. Army Corps of Engineers, Missouri River Recovery Program–Integrated Science Program. CERC scientists are working with river scientists and man­agers to develop methods, baseline information, and research approaches that are critical contributions to recovery success of the...
Learn More
link
Female pallid sturgeon, PLS11-007, is released back into the Missouri River after an ultrasound evaluation

Comprehensive Sturgeon Research Project Blog - 2017

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

link

Comprehensive Sturgeon Research Project Blog - 2017

The USGS Comprehensive Sturgeon Research Project is a multi-year, interdisciplinary research study to determine factors leading to spawning and survival of the endangered pallid sturgeon and the closely related shovelnose sturgeon. 

Learn More

Invertebrates enumerated from the diets of larval pallid sturgeon (Scaphirhynchus albus) and shovelnose sturgeon (S. platorynchus) in the Upper Missouri River, Montana and North Dakota in 2019

An inventory (enumeration and taxonomic identification) of diet items consumed by wild-caught larval pallid sturgeon and larval shovelnose sturgeon, based on the examination of gut contents from fish that were collected in the Upper Missouri River drainage of the U.S.
By
Columbia Environmental Research Center

Pallid sturgeon free embryo drift and dispersal experiment data from the Upper Missouri River, Montana and North Dakota, 2019

The data set contains sampling data, catch data, and biological data associated with a broad-scale experiment to examine free embryo dispersal and larval settlement of endangered pallid sturgeon (Scaphirhynchus albus) in the Missouri River of eastern Montana and western North Dakota. On 20190701, two age groups of pallid sturgeon including 771,707 1-day post-hatch (dph) free embryos and 200,786 5-
By
Columbia Environmental Research Center
Filter Total Items: 24

Dietary comparison of age-0 sturgeon (Scaphirhynchus sp.) between upper and lower Missouri River basins

Understanding potential limiting factors affecting population growth of the endangered pallid sturgeon, Scaphirhynchus albus, is important in the upper (UMOR) and lower Missouri River (LMOR) basins. The UMOR is upstream of several reservoirs and generally has more natural habitat features, whereas the LMOR is downstream of these reservoirs and has been channelized to support navigation. In both se
Authors
Alin González, James M. Long, Nathan J.C. Gosch, Anthony P. Civiello, Todd R. Gemeinhardt, Jerrod Hall, Patrick Braaten
By
Cooperative Research Units

Haploid gynogens facilitate disomic marker development in paleotetraploid sturgeons

Acipenseriformes (sturgeons and paddlefishes) are of substantial conservation concern, and development of genomic resources for these species is difficult due to past whole genome duplication. Development of disomic markers for polyploid organisms can be challenging due to difficulty in resolving alleles at a single locus from those among duplicated loci. In this study, we detail the development o
Authors
Richard Jr Flamio, Dominic G Swift, David S Portnoy, Kimberly Chojnacki, Aaron J. Delonay, Jeffrey Powell, Patrick Braaten, Edward J. Heist
By
Ecosystems Mission Area, Columbia Environmental Research Center

Diet composition and overlap of larval pallid sturgeon and shovelnose sturgeon from the upper Missouri River, USA

Early life stages of pallid sturgeon Scaphirhynchus albus are rarely collected, and thus information on their biology and ecology is extremely limited. We sampled 75 larval pallid sturgeon (25-110 mm) and 148 larval shovelnose sturgeon S. platorynchus (15-95 mm) by trawl from the upper Missouri River (USA) in 2019. Stomach contents were identified to compare food use and diet overlap between the 2
Authors
Colt Taylor Holley, Patrick Braaten, Barry Poulton, Edward J. Heist, Levi Umland, Tyler M. Haddix
By
Ecosystems Mission Area, Columbia Environmental Research Center

Growth and survival rates of dispersing free embryos and settled larvae of pallid sturgeon (Scaphirhynchus albus) in the Missouri River, Montana and North Dakota

We released nearly 1.0 million 1-day post-hatch (dph) and 5-dph pallid sturgeon (Scaphirhynchus albus) free embryos in the Missouri River on 1 July 2019 and sequentially captured survivors at multiple sites through a 240-km river reach to quantify daily growth and survival rates during the early life stages. Genetic analysis was used to assign captured fish to released family lots and known ages.
Authors
Patrick Braaten, R.J. Holm, J. A. Powell, E.J. Heist, Amy C. Buhman, Colt Taylor Holley, Aaron J. Delonay, T.M. Haddix, R.H. Wilson, R. B. Jacobson
By
Ecosystems Mission Area, Columbia Environmental Research Center

Catch rates for sturgeon chubs and sicklefin chubs in the Upper Missouri River 2004–2016 and correlations with biotic and abiotic variables

A multiweek standardized sampling regime during 2004–2016 in a 60-km reach of the Upper Missouri River assessed reproduction and catch rates for Sturgeon Chub Macrhybopsis gelida and Sicklefin Chub Macrhybopsis meeki. We sampled age-0 Macrhybopsis (primarily Sturgeon Chubs, but potentially including Sicklefin Chubs) all years to indicate successful reproduction, but noted an inverse correlation of
Authors
Patrick Braaten, David B. Fuller, Tyler M. Haddix, John R. Hunziker, Michael E. Colvin, Luke M. Holmquist, Ryan H. Wilson
By
Ecosystems Mission Area, Columbia Environmental Research Center

Improved genetic identification of acipenseriform embryos with application to the endangered pallid sturgeon Scaphirhynchus albus

We produced pallid sturgeon Scaphirhynchus albus embryos at five pre‐hatch developmental stages and isolated and quantified genomic DNA from four of the stages using four commercial DNA isolation kits. Genomic DNA prepared using the kit that produced the largest yields and concentrations were used for microsatellite DNA analyses of 10–20 embryos at each of the five developmental stages. We attempt
Authors
Tom Kashiwagi, Aaron J. Delonay, Patrick Braaten, Kimberly Chojnacki, Rachel M. Gocker, Edward J. Heist
By
Ecosystems Mission Area, Columbia Environmental Research Center

Evaluating flow management as a strategy to recover an endangered sturgeon species in the Upper Missouri River, USA

In the Upper Missouri River, Fort Peck and Garrison Dams limit the length of free‐flowing river available to the endangered pallid sturgeon. These barriers restrict the upstream migration of adults and downstream larval dispersal. A one‐dimensional (1D) modelling framework is currently in use to evaluate reservoir operation alternatives and to simulate drift of dispersing free embryos for differen
Authors
Susannah O. Erwin, Edward A. Bulliner, Craig J Fischenich, Robert B. Jacobson, Patrick Braaten, Aaron J. Delonay
By
Ecosystems Mission Area, Columbia Environmental Research Center

Status of knowledge of the Pallid Sturgeon (Scaphirhynchus albus Forbes and Richardson, 1905)

The Pallid Sturgeon is listed as federally endangered under the Endangered Species Act in the United States. When the species was listed in 1990 it was considered extremely rare and was poorly understood. Habitat alteration, commercial harvest, environmental contaminants, and other factors were identified as threats. Today our scientific understanding of the species and its life history requiremen
Authors
G. R. Jordan, E.J. Heist, Patrick Braaten, Aaron J. Delonay, P. Hartfield, D.P. Herzog, K.M. Kappenman, M.A.H. Web
By
Ecosystems Mission Area, Columbia Environmental Research Center

Ecological requirements for pallid sturgeon reproduction and recruitment in the Missouri River—Annual report 2014

The Comprehensive Sturgeon Research Project is a multiyear, multiagency collaborative research framework developed to provide information to support pallid sturgeon recovery and Missouri River management decisions. The project strategy integrates field and laboratory studies of sturgeon reproductive ecology, early life history, habitat requirements, and physiology. The project scope of work is dev
Authors
Aaron J. Delonay, Kimberly A. Chojnacki, Robert B. Jacobson, Patrick J. Braaten, Kevin J. Buhl, Caroline M. Elliott, Susannah O. Erwin, Jacob D.A. Faulkner, James S. Candrl, David B. Fuller, Kenneth M. Backes, Tyler M. Haddix, Matthew L. Rugg, Christopher J. Wesolek, Brandon L. Eder, Gerald E. Mestl
By
Ecosystems Mission Area, Columbia Environmental Research Center

Ecological requirements for pallid sturgeon reproduction and recruitment in the Missouri River—Annual report 2013

The Comprehensive Sturgeon Research Project is a multiyear, multiagency collaborative research framework developed to provide information to support pallid sturgeon recovery and Missouri River management decisions. The project strategy integrates field and laboratory studies of pallid sturgeon reproductive ecology, early life history, habitat requirements, and physiology. The project scope of work
Authors
Aaron J. Delonay, Robert B. Jacobson, Kimberly A. Chojnacki, Patrick J. Braaten, Kevin J. Buhl, Brandon L Eder, Caroline M. Elliott, Susannah O. Erwin, David B. Fuller, Tyler M. Haddix, Hallie L.A. Ladd, Gerald E. Mestl, Diana M. Papoulias, Jason C. Rhoten, Christopher J. Wesolek, Mark L. Wildhaber
By
Ecosystems Mission Area, Columbia Environmental Research Center

Ecological requirements for pallid sturgeon reproduction and recruitment in the Missouri River—A synthesis of science, 2005 to 2012

This report is intended to synthesize the state of the scientific understanding of pallid sturgeon ecological requirements to provide recommendations for future science directions and context for Missouri River restoration and management decisions. Recruitment of pallid sturgeon has been low to non-existent throughout its range. Emerging understanding of the genetic structure of pallid sturgeon po
Authors
Aaron J. Delonay, Kimberly A. Chojnacki, Robert B. Jacobson, Janice L. Albers, Patrick J. Braaten, Edward A. Bulliner, Caroline M. Elliott, Susannah O. Erwin, David B Fuller, Justin D. Haas, Hallie L.A. Ladd, Gerald E. Mestl, Diana M. Papoulias, Mark L. Wildhaber
By
Ecosystems Mission Area, Columbia Environmental Research Center

Age estimations of wild pallid sturgeon (Scaphirhynchus albus, Forbes & Richardson 1905) based on pectoral fin spines, otoliths and bomb radiocarbon: inferences on recruitment in the dam-fragmented Missouri River

An extant stock of wild pallid sturgeon Scaphirhynchus albus persists in the fragmented upper Missouri River basin of Montana and North Dakota. Although successful spawning and hatch of embryos has been verified, long-term catch records suggest that recruitment has not occurred for several decades as the extant stock lacks juvenile size classes and is comprised exclusively of large, presumably old
Authors
P. J. Braaten, S. E. Campana, D. B. Fuller, R. D. Lott, R. M. Bruch, G. R. Jordan
By
Ecosystems Mission Area, Columbia Environmental Research Center
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