Eric Janney - currently serves as the Deputy Center Director of the USGS Western Fisheries Research Center in Seattle.
Education and Certifications
M.S. 2001. Wildlife and Fisheries Resources, West Virginia University, Department of Forestry, Morgantown, WV [Advisor: Dr. Kyle J. Hartman]
B.S. 1994. Biology, University of Kentucky, Department of Biological Sciences, College of Arts and Science, Lexington, KY
Science and Products
Filter Total Items: 30
Water and endangered fish in the Klamath River Basin: Do Upper Klamath Lake surface elevation and water quality affect adult Lost River and Shortnose Sucker survival?
In the western United States, water allocation decisions often incorporate the needs of endangered fish. In the Klamath River basin, an understanding of temporal variation in annual survival rates of Shortnose Suckers Chasmistes brevirostris and Lost River Suckers Deltistes luxatus and their relation to environmental drivers is critical to water management and sucker recovery. Extinction risk is h
Authors
Jacob Richard Krause, Eric C. Janney, Summer M. Burdick, Alta C. Harris, Brian S. Hayes
Dynamics of endangered sucker populations in Clear Lake Reservoir, California
Executive SummaryIn collaboration with the Bureau of Reclamation, the U.S. Geological Survey began a consistent monitoring program for endangered Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Clear Lake Reservoir, California, in fall 2004. The program was intended to improve understanding of the Clear Lake Reservoir populations because they are important
Authors
David A. Hewitt, Brian S. Hayes, Alta C. Harris, Eric C. Janney, Caylen M. Kelsey, Russell W. Perry, Summer M. Burdick
Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2017
Executive SummaryData from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawni
Authors
David A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. Harris
Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2015
Executive SummaryData from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawni
Authors
David A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. Harris
Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2014
Executive Summary
Data from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrat
Authors
David A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. Harris
Demographics and run timing of adult Lost River (Deltistes luxatus) and short nose (Chasmistes brevirostris) suckers in Upper Klamath Lake, Oregon, 2012
Data from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each year
Authors
David A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. Harris
Demographics and run timing of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers in Upper Klamath Lake, Oregon, 2011
Executive Summary
Data from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrat
Authors
David A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. Harris
Demographics and run timing of adult Lost River (Deltistes luxatus) and short nose (Chasmistes brevirostris) suckers in Upper Klamath Lake, Oregon, 2009
Data from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each year
Authors
David A. Hewitt, Brian S. Hayes, Eric C. Janney, Alta C. Harris, Justin P. Koller, Mark A. Johnson
Improving inferences from fisheries capture-recapture studies through remote detection of PIT tags
Models for capture-recapture data are commonly used in analyses of the dynamics of fish and wildlife populations, especially for estimating vital parameters such as survival. Capture-recapture methods provide more reliable inferences than other methods commonly used in fisheries studies. However, for rare or elusive fish species, parameter estimation is often hampered by small probabilities of re-
Authors
David A. Hewitt, Eric C. Janney, Brian S. Hayes, Rip S. Shively
Demographics and 2008 Run Timing of Adult Lost River (Deltistes luxatus) and Shortnose (Chasmistes brevirostris) Suckers in Upper Klamath Lake
We used capture-recapture data to assess population dynamics of endangered Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon. The Cormack-Jolly-Seber method was used to estimate apparent survival probabilities, and a temporal symmetry model was used to estimate annual seniority probabilities. Information theoretic modeling was used
Authors
Eric C. Janney, Brian S. Hayes, David A. Hewitt, Patrick M. Barry, Alta Scott, Justin Koller, Mark Johnson, Greta Blackwood
Population Dynamics of Adult Lost River (Deltistes luxatus) and Shortnose (Chasmistes brevirostris) Suckers in Clear Lake Reservoir, California, 2006-08
We report results from ongoing research into the population dynamics of endangered Lost River and shortnose suckers in Clear Lake Reservoir, California. Results are included for sampling that occurred from fall 2006 to spring 2008. We summarize catches and passive integrated transponder tagging efforts from trammel net sampling in fall 2006 and fall 2007, and report on detections of tagged suckers
Authors
Patrick M. Barry, Eric C. Janney, David A. Hewitt, Brian S. Hayes, Alta C. Scott
Demographic analysis of Lost River sucker and shortnose sucker populations in Upper Klamath Lake, Oregon
We used 13 years (1995-2007) of capture-mark-recapture data to assess population dynamics of endangered Lost River suckers Deltistes luxatus and shortnose suckers Chasmistes brevirostris in Upper Klamath Lake, Oregon. The Cormack-Jolly-Seber method was used to estimate survival, and information theoretic modeling was used to assess variation due to time, gender, species, and spawning subpopulation
Authors
E.C. Janney, R.S. Shively, B.S. Hayes, P.M. Barry, D. Perkins
KFFS Lead Scientists and Areas of Expertise
Lead Scientist - Expertise
Species Studied at the Klamath Falls Field Station
The Klamath Falls Field Station conducts research on rare and imperiled fishes in the Klamath Basin and the desert southwest. The following list contains both common and scientific names. Descriptions of species and studies can be found under the "Related Science" tab.
Water Quality Effects on Fish
Impaired water quality conditions in Upper Klamath Lake have been implicated in reduced survival of fishes and are a concern for recovery efforts.
Shortnose Sucker (Chasmistes brevirostris) - KFFS
Species Studied - Shortnose Sucker (Chasmistes brevirostris)
Lost River Sucker (Deltistes luxatus) - KFFS
Species Studied - Lost River Sucker (Deltistes luxatus)
Klamath Largescale Sucker (Catostomus snyderi) - KFFS
Species Studied - Klamath Largescale Sucker (Catostomus snyderi)
Science and Products
- Publications
Filter Total Items: 30
Water and endangered fish in the Klamath River Basin: Do Upper Klamath Lake surface elevation and water quality affect adult Lost River and Shortnose Sucker survival?
In the western United States, water allocation decisions often incorporate the needs of endangered fish. In the Klamath River basin, an understanding of temporal variation in annual survival rates of Shortnose Suckers Chasmistes brevirostris and Lost River Suckers Deltistes luxatus and their relation to environmental drivers is critical to water management and sucker recovery. Extinction risk is hAuthorsJacob Richard Krause, Eric C. Janney, Summer M. Burdick, Alta C. Harris, Brian S. HayesDynamics of endangered sucker populations in Clear Lake Reservoir, California
Executive SummaryIn collaboration with the Bureau of Reclamation, the U.S. Geological Survey began a consistent monitoring program for endangered Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Clear Lake Reservoir, California, in fall 2004. The program was intended to improve understanding of the Clear Lake Reservoir populations because they are importantAuthorsDavid A. Hewitt, Brian S. Hayes, Alta C. Harris, Eric C. Janney, Caylen M. Kelsey, Russell W. Perry, Summer M. BurdickStatus and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2017
Executive SummaryData from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawniAuthorsDavid A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. HarrisStatus and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2015
Executive SummaryData from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawniAuthorsDavid A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. HarrisStatus and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2014
Executive Summary Data from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migratAuthorsDavid A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. HarrisDemographics and run timing of adult Lost River (Deltistes luxatus) and short nose (Chasmistes brevirostris) suckers in Upper Klamath Lake, Oregon, 2012
Data from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each yearAuthorsDavid A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. HarrisDemographics and run timing of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers in Upper Klamath Lake, Oregon, 2011
Executive Summary Data from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migratAuthorsDavid A. Hewitt, Eric C. Janney, Brian S. Hayes, Alta C. HarrisDemographics and run timing of adult Lost River (Deltistes luxatus) and short nose (Chasmistes brevirostris) suckers in Upper Klamath Lake, Oregon, 2009
Data from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each yearAuthorsDavid A. Hewitt, Brian S. Hayes, Eric C. Janney, Alta C. Harris, Justin P. Koller, Mark A. JohnsonImproving inferences from fisheries capture-recapture studies through remote detection of PIT tags
Models for capture-recapture data are commonly used in analyses of the dynamics of fish and wildlife populations, especially for estimating vital parameters such as survival. Capture-recapture methods provide more reliable inferences than other methods commonly used in fisheries studies. However, for rare or elusive fish species, parameter estimation is often hampered by small probabilities of re-AuthorsDavid A. Hewitt, Eric C. Janney, Brian S. Hayes, Rip S. ShivelyDemographics and 2008 Run Timing of Adult Lost River (Deltistes luxatus) and Shortnose (Chasmistes brevirostris) Suckers in Upper Klamath Lake
We used capture-recapture data to assess population dynamics of endangered Lost River suckers (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon. The Cormack-Jolly-Seber method was used to estimate apparent survival probabilities, and a temporal symmetry model was used to estimate annual seniority probabilities. Information theoretic modeling was usedAuthorsEric C. Janney, Brian S. Hayes, David A. Hewitt, Patrick M. Barry, Alta Scott, Justin Koller, Mark Johnson, Greta BlackwoodPopulation Dynamics of Adult Lost River (Deltistes luxatus) and Shortnose (Chasmistes brevirostris) Suckers in Clear Lake Reservoir, California, 2006-08
We report results from ongoing research into the population dynamics of endangered Lost River and shortnose suckers in Clear Lake Reservoir, California. Results are included for sampling that occurred from fall 2006 to spring 2008. We summarize catches and passive integrated transponder tagging efforts from trammel net sampling in fall 2006 and fall 2007, and report on detections of tagged suckersAuthorsPatrick M. Barry, Eric C. Janney, David A. Hewitt, Brian S. Hayes, Alta C. ScottDemographic analysis of Lost River sucker and shortnose sucker populations in Upper Klamath Lake, Oregon
We used 13 years (1995-2007) of capture-mark-recapture data to assess population dynamics of endangered Lost River suckers Deltistes luxatus and shortnose suckers Chasmistes brevirostris in Upper Klamath Lake, Oregon. The Cormack-Jolly-Seber method was used to estimate survival, and information theoretic modeling was used to assess variation due to time, gender, species, and spawning subpopulationAuthorsE.C. Janney, R.S. Shively, B.S. Hayes, P.M. Barry, D. Perkins - Science
KFFS Lead Scientists and Areas of Expertise
Lead Scientist - ExpertiseSpecies Studied at the Klamath Falls Field Station
The Klamath Falls Field Station conducts research on rare and imperiled fishes in the Klamath Basin and the desert southwest. The following list contains both common and scientific names. Descriptions of species and studies can be found under the "Related Science" tab.Water Quality Effects on Fish
Impaired water quality conditions in Upper Klamath Lake have been implicated in reduced survival of fishes and are a concern for recovery efforts.Shortnose Sucker (Chasmistes brevirostris) - KFFS
Species Studied - Shortnose Sucker (Chasmistes brevirostris)Lost River Sucker (Deltistes luxatus) - KFFS
Species Studied - Lost River Sucker (Deltistes luxatus)Klamath Largescale Sucker (Catostomus snyderi) - KFFS
Species Studied - Klamath Largescale Sucker (Catostomus snyderi) - Multimedia
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