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Barbara Martin (Former Employee)

Science and Products

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Pahranagat chub (Gila robusta)

Pahranagat roundtail chub (Gila robusta) - KFFS

Species Studied - Pahranagat roundtail chub ( Gila robusta )
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)
link

Pahranagat roundtail chub (Gila robusta) - KFFS

Species Studied - Pahranagat roundtail chub ( Gila robusta )
Learn More
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Klamath Tribe Research Hatchery

Tribal Collaboration - KFFS

Factors limiting survival of juvenile endangered suckers.
By
Western Fisheries Research Center, Klamath Falls Field Station (KFFS)
link

Tribal Collaboration - KFFS

Factors limiting survival of juvenile endangered suckers.
Learn More
link
Anadromous bull trout

Bull Trout (Salvelinus confluentus) - KFFS

Species Studied - Bull Trout ( Salvelinus confluentus )
By
Ecosystems Mission Area, Klamath Falls Field Station (KFFS)
link

Bull Trout (Salvelinus confluentus) - KFFS

Species Studied - Bull Trout ( Salvelinus confluentus )
Learn More

Upper Klamath Lake and Clear Lake sampling for suckers from 2015 through 2022

Data in this data set include effort expended to collect suckers for cohort tracking and metrics and observations for each sucker captured from 2015 through 2022. There are two levels of data. All Nets data contains 5102 records and the data file is 609 KB. Captures data contains 3764 records and the data file is 504 KB. The data files can be linked by setID which is a unique identifier for a uniq
By
Western Fisheries Research Center

Marginal increment and age data from fin rays of endangered suckers

Data included in this data set are from suckers collected in Hagelstein Pond from 2014 through 2021. Data were collected on age, marginal increment, and marginal increment ratios from fin rays, and length of suckers captured during monthly sampling events. There are two levels of data. Fin ray data contains 409 records and the data file is 31 KB, repeat data contains 58 records and the data file i
By
Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Data from 2018 Experiment on Effects of Temperature on Survival and Growth of Juvenile Lost River Suckers (Deltistes luxatus) naturally exposed to Ichthyobodo spp

Data included in this data set are for an experiment conducted in 2018. Data were collected on survival, growth, food consumption, and Ichthyobodo copy numbers of Lost River suckers exposed to five different temperature groups. There are five levels of data. Temperature data contains 1,178 records and the data file is 35 KB, survival data contains 150 records and the data file is 3 KB, food consum
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Species Management Research Program, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

Data for Trap Net Captured Juvenile Lost River and Shortnose Suckers from Upper Klamath Lake, Oregon

Data included in this data set are for trap net captured juvenile suckers from Upper Klamath Lake, Oregon starting in 2001. Data were collected on fishing effort, the number of suckers captured, sucker length, and sucker species. There are two levels of data. Net level data contains 14,838 records and the data file is 2,069 KB and fish level data contains 25,236 records and the data file is 1,543
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)
Image: Female Desert Pupfish
Male Desert Pupfish
Male Desert Pupfish
Image: Female Desert Pupfish

Male Desert Pupfish

Male Desert Pupfish

Desert pupfish, adult male, in seine net with other fish. Captured from the USGS/BOR Shallow Habitat Project experimental ponds on the southeast side of the Salton Sea, CA.

By
Western Fisheries Research Center
Image: Female Desert Pupfish

Male Desert Pupfish

Male Desert Pupfish

Desert pupfish, adult male, in seine net with other fish. Captured from the USGS/BOR Shallow Habitat Project experimental ponds on the southeast side of the Salton Sea, CA.

By
Western Fisheries Research Center
Image: Female Desert Pupfish
Female Desert Pupfish
Female Desert Pupfish
Image: Female Desert Pupfish

Female Desert Pupfish

Female Desert Pupfish

Desert pupfish, adult female, in seine net with other fish. Captured from the USGS/BOR Shallow Habitat Project experimental ponds on the southeast side of the Salton Sea, CA.

By
Western Fisheries Research Center
Image: Female Desert Pupfish

Female Desert Pupfish

Female Desert Pupfish

Desert pupfish, adult female, in seine net with other fish. Captured from the USGS/BOR Shallow Habitat Project experimental ponds on the southeast side of the Salton Sea, CA.

By
Western Fisheries Research Center
Image: Salton Sea Sunset
Salton Sea Sunset
Salton Sea Sunset
Image: Salton Sea Sunset

Salton Sea Sunset

Salton Sea Sunset

Sunset on the southeast side of the Salton Sea, CA.

By
Western Geographic Science Center
Image: Salton Sea Sunset

Salton Sea Sunset

Salton Sea Sunset

Sunset on the southeast side of the Salton Sea, CA.

By
Western Geographic Science Center
Filter Total Items: 33

Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2021–22 monitoring report

Executive SummaryThe work reported in this publication provides updated data and interpretation for sampling years 2015 and 2022 of the juvenile monitoring project. The study objectives, background, study area, species description, and methods remained the same or similar throughout the years, while the executive summary, results, and discussion were updated each year. Therefore much of this paper
Authors
Barbara A. Martin, John M. Caldwell, Jacob R. Krause, Alta C. Harris
By
Ecosystems Mission Area, Western Fisheries Research Center

Validating a non-lethal method of aging endangered juvenile Lost River and Shortnose Suckers

Populations of imperiled Lost River Deltistes luxatus and Shortnose Chasmistes brevirostris suckers in Upper Klamath Lake, Oregon, are experiencing long-term decreases in abundance due to limited recruitment of juvenile suckers into the adult populations. Researchers use estimated ages based on fin rays to study environmental factors affecting year-class formation, generate annual juvenile sucker
Authors
Barbara A. Martin, Summer M. Burdick, Rachael Katelyn Paul-Wilson, Ryan J Bart
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2020 monitoring report

Executive SummaryPopulations of federally endangered Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir (hereinafter, Clear Lake), California, are experiencing long-term decreases in abundance. Upper Klamath Lake populations are decreasing not only because of adult mortality, which is relatively low, but also becau
Authors
Barbara A. Martin, Caylen M. Kelsey, Summer M. Burdick, Ryan J. Bart
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Distribution of bull trout (Salvelinus confluentus) in conjunction with habitat and trout assemblages in creeks within the Klamath Basin, Oregon 2010–16

Bull trout (Salvelinus confluentus) in the Klamath Basin are on the southernmost border of the range of the species, where threats are most severe and where bull trout are most imperiled. In their recovery plan the U.S. Fish and Wildlife Service (2015, https://ecos.fws.gov/ecp/report/species-with-recovery-plans) suggested that Klamath Basin bull trout are at increased risk of extirpation due to ha
Authors
Barbara A. Martin, Nolan Banish, David A. Hewitt, Brian S. Hayes, Amari Dolan-Caret, Alta C. Harris, Caylen Kelsey
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Water quality, instream habitat, and the distribution of suckers in the upper Lost River watershed of Oregon and California, summer 2018

Executive SummaryEndangered Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers primarily use lotic habitats during the spring spawning season in the Upper Klamath Lake watershed. However, summer-time surveys of the upper Lost River watershed in 1972, 1975 and 1989–90 indicated that adults of both endangered species use tributaries of Clear Lake Reservoir (hereafter: Cle
Authors
Barbara A. Martin, Summer M. Burdick, Stephen T. Staiger, Caylen M. Kelsey
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Effect of temperature on survival of Lost River Suckers with a natural infection of Ichthyobodo spp.

To compensate for low natural survival of endangered Lost River Suckers Deltistes luxatus, the U.S. Fish and Wildlife Service and the Klamath Tribes have initiated captive rearing programs. We conducted laboratory experiments intended to determine the temperature for optimum growth of juvenile Lost River Suckers; however, due to an unanticipated infection with Ichthyobodo spp., we instead estimate
Authors
Barbara A. Martin, Summer M. Burdick, Maureen K. Purcell, Rachel L. Powers
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Species Management Research Program, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

Effects of harmful algal blooms and associated water-quality on endangered Lost River and shortnose suckers

Anthropogenic eutrophication contributes to harmful blooms of cyanobacteria in freshwater ecosystems worldwide. In Upper Klamath Lake, Oregon, massive blooms of Aphanizomenon flos-aquae and smaller blooms of other cyanobacteria are associated with cyanotoxins, hypoxia, high pH, high concentrations of ammonia, and potentially hypercapnia. Recovery of the endangered Lost River sucker Deltistes luxat
Authors
Summer M. Burdick, David A. Hewitt, Barbara A. Martin, Liam N. Schenk, Stewart A. Rounds
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Mortality of endangered juvenile Lost River Suckers associated with cyanobacteria blooms in mesocosms in Upper Klamath Lake, Oregon

Unsustainably high mortality within the first 2 years of life prevents endangered Lost River Suckers Deltistes luxatus in Upper Klamath Lake, Oregon, from recruiting to spawning populations. Massive blooms of the cyanobacterium Aphanizomenon flos‐aquae and their subsequent death and decay in the lake (bloom‐crashes) are associated with high pH, low percent oxygen saturation, high total ammonia con
Authors
Summer M. Burdick, Danielle M Hereford, Carla M. Conway, Nathan V Banet, Rachel L. Powers, Barbara A. Martin, Diane G. Elliott
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

Effects of microcystin-LR on juvenile Lost River suckers (Deltistes luxatus) during feeding trials, Upper Klamath Lake, Oregon, 2014−16

Executive SummaryHistorically, populations of Lost River suckers (Deltistes luxatus) of the Upper Klamath Basin were so numerous that they were commercially harvested; however, declining numbers throughout the 20th century led to the listing of the species under the United States Endangered Species Act in 1988. Habitat destruction, poor water quality, competition with (and predation by) nonnative
Authors
Barbara A. Martin, Kathy R. Echols, Diane G. Elliott, Kevin Feltz, Carla M. Conway, Summer M. Burdick
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Columbia Environmental Research Center, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

Examination of movements and survival of Pahranagat roundtail chub (Gila robusta jordani) in the Pahranagat River and adjacent waters, Nevada, 2014–18

Executive SummaryThe Pahranagat roundtail chub (Gila robusta jordani; hereinafter “chub”) was federally listed as endangered in 1970 (U.S. Fish and Wildlife Service, 1970). In the decades following the listing, the chub has declined to extremely low numbers (Tuttle and others, 1990; Guadalupe, 2014). Loss of available habitat appears to be one of the main reasons for the decline of this species. H
Authors
Barbara A. Martin, Brian S. Hayes, Alta C. Harris
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Inter-annual variability in apparent relative production, survival, and growth of juvenile Lost River and shortnose suckers in Upper Klamath Lake, Oregon, 2001–15

Executive SummaryPopulations of the once abundant Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) of the Upper Klamath Basin, decreased so substantially throughout the 20th century that they were listed under the Endangered Species Act in 1988. Major landscape alterations, deterioration of water quality, and competition with and predation by exotic species are listed
Authors
Summer M. Burdick, Barbara A. Martin
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Effects of Chiloquin Dam on spawning distribution and larval emigration of Lost River, shortnose, and Klamath largescale suckers in the Williamson and Sprague Rivers, Oregon

Chiloquin Dam was constructed in 1914 on the Sprague River near the town of Chiloquin, Oregon. The dam was identified as a barrier that potentially inhibited or prevented the upstream spawning migrations and other movements of endangered Lost River (Deltistes luxatus
Authors
Barbara A. Martin, David A. Hewitt, Craig M. Ellsworth
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Non-USGS Publications**

Martin, B.A. 1997. Effects of ambient water quality on the endangered Lost River sucker (Deltistes luxatus) in Upper Klamath Lake, Oregon. M.S. thesis, Humboldt State University, Arcata, CA. 55 pp.

**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.

Science and Products

link
Pahranagat chub (Gila robusta)

Pahranagat roundtail chub (Gila robusta) - KFFS

Species Studied - Pahranagat roundtail chub ( Gila robusta )
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)
link

Pahranagat roundtail chub (Gila robusta) - KFFS

Species Studied - Pahranagat roundtail chub ( Gila robusta )
Learn More
link
Klamath Tribe Research Hatchery

Tribal Collaboration - KFFS

Factors limiting survival of juvenile endangered suckers.
By
Western Fisheries Research Center, Klamath Falls Field Station (KFFS)
link

Tribal Collaboration - KFFS

Factors limiting survival of juvenile endangered suckers.
Learn More
link
Anadromous bull trout

Bull Trout (Salvelinus confluentus) - KFFS

Species Studied - Bull Trout ( Salvelinus confluentus )
By
Ecosystems Mission Area, Klamath Falls Field Station (KFFS)
link

Bull Trout (Salvelinus confluentus) - KFFS

Species Studied - Bull Trout ( Salvelinus confluentus )
Learn More

Upper Klamath Lake and Clear Lake sampling for suckers from 2015 through 2022

Data in this data set include effort expended to collect suckers for cohort tracking and metrics and observations for each sucker captured from 2015 through 2022. There are two levels of data. All Nets data contains 5102 records and the data file is 609 KB. Captures data contains 3764 records and the data file is 504 KB. The data files can be linked by setID which is a unique identifier for a uniq
By
Western Fisheries Research Center

Marginal increment and age data from fin rays of endangered suckers

Data included in this data set are from suckers collected in Hagelstein Pond from 2014 through 2021. Data were collected on age, marginal increment, and marginal increment ratios from fin rays, and length of suckers captured during monthly sampling events. There are two levels of data. Fin ray data contains 409 records and the data file is 31 KB, repeat data contains 58 records and the data file i
By
Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Data from 2018 Experiment on Effects of Temperature on Survival and Growth of Juvenile Lost River Suckers (Deltistes luxatus) naturally exposed to Ichthyobodo spp

Data included in this data set are for an experiment conducted in 2018. Data were collected on survival, growth, food consumption, and Ichthyobodo copy numbers of Lost River suckers exposed to five different temperature groups. There are five levels of data. Temperature data contains 1,178 records and the data file is 35 KB, survival data contains 150 records and the data file is 3 KB, food consum
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Species Management Research Program, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

Data for Trap Net Captured Juvenile Lost River and Shortnose Suckers from Upper Klamath Lake, Oregon

Data included in this data set are for trap net captured juvenile suckers from Upper Klamath Lake, Oregon starting in 2001. Data were collected on fishing effort, the number of suckers captured, sucker length, and sucker species. There are two levels of data. Net level data contains 14,838 records and the data file is 2,069 KB and fish level data contains 25,236 records and the data file is 1,543
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)
Image: Female Desert Pupfish
Male Desert Pupfish
Male Desert Pupfish
Image: Female Desert Pupfish

Male Desert Pupfish

Male Desert Pupfish

Desert pupfish, adult male, in seine net with other fish. Captured from the USGS/BOR Shallow Habitat Project experimental ponds on the southeast side of the Salton Sea, CA.

By
Western Fisheries Research Center
Image: Female Desert Pupfish

Male Desert Pupfish

Male Desert Pupfish

Desert pupfish, adult male, in seine net with other fish. Captured from the USGS/BOR Shallow Habitat Project experimental ponds on the southeast side of the Salton Sea, CA.

By
Western Fisheries Research Center
Image: Female Desert Pupfish
Female Desert Pupfish
Female Desert Pupfish
Image: Female Desert Pupfish

Female Desert Pupfish

Female Desert Pupfish

Desert pupfish, adult female, in seine net with other fish. Captured from the USGS/BOR Shallow Habitat Project experimental ponds on the southeast side of the Salton Sea, CA.

By
Western Fisheries Research Center
Image: Female Desert Pupfish

Female Desert Pupfish

Female Desert Pupfish

Desert pupfish, adult female, in seine net with other fish. Captured from the USGS/BOR Shallow Habitat Project experimental ponds on the southeast side of the Salton Sea, CA.

By
Western Fisheries Research Center
Image: Salton Sea Sunset
Salton Sea Sunset
Salton Sea Sunset
Image: Salton Sea Sunset

Salton Sea Sunset

Salton Sea Sunset

Sunset on the southeast side of the Salton Sea, CA.

By
Western Geographic Science Center
Image: Salton Sea Sunset

Salton Sea Sunset

Salton Sea Sunset

Sunset on the southeast side of the Salton Sea, CA.

By
Western Geographic Science Center
Filter Total Items: 33

Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2021–22 monitoring report

Executive SummaryThe work reported in this publication provides updated data and interpretation for sampling years 2015 and 2022 of the juvenile monitoring project. The study objectives, background, study area, species description, and methods remained the same or similar throughout the years, while the executive summary, results, and discussion were updated each year. Therefore much of this paper
Authors
Barbara A. Martin, John M. Caldwell, Jacob R. Krause, Alta C. Harris
By
Ecosystems Mission Area, Western Fisheries Research Center

Validating a non-lethal method of aging endangered juvenile Lost River and Shortnose Suckers

Populations of imperiled Lost River Deltistes luxatus and Shortnose Chasmistes brevirostris suckers in Upper Klamath Lake, Oregon, are experiencing long-term decreases in abundance due to limited recruitment of juvenile suckers into the adult populations. Researchers use estimated ages based on fin rays to study environmental factors affecting year-class formation, generate annual juvenile sucker
Authors
Barbara A. Martin, Summer M. Burdick, Rachael Katelyn Paul-Wilson, Ryan J Bart
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2020 monitoring report

Executive SummaryPopulations of federally endangered Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir (hereinafter, Clear Lake), California, are experiencing long-term decreases in abundance. Upper Klamath Lake populations are decreasing not only because of adult mortality, which is relatively low, but also becau
Authors
Barbara A. Martin, Caylen M. Kelsey, Summer M. Burdick, Ryan J. Bart
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Distribution of bull trout (Salvelinus confluentus) in conjunction with habitat and trout assemblages in creeks within the Klamath Basin, Oregon 2010–16

Bull trout (Salvelinus confluentus) in the Klamath Basin are on the southernmost border of the range of the species, where threats are most severe and where bull trout are most imperiled. In their recovery plan the U.S. Fish and Wildlife Service (2015, https://ecos.fws.gov/ecp/report/species-with-recovery-plans) suggested that Klamath Basin bull trout are at increased risk of extirpation due to ha
Authors
Barbara A. Martin, Nolan Banish, David A. Hewitt, Brian S. Hayes, Amari Dolan-Caret, Alta C. Harris, Caylen Kelsey
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Water quality, instream habitat, and the distribution of suckers in the upper Lost River watershed of Oregon and California, summer 2018

Executive SummaryEndangered Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers primarily use lotic habitats during the spring spawning season in the Upper Klamath Lake watershed. However, summer-time surveys of the upper Lost River watershed in 1972, 1975 and 1989–90 indicated that adults of both endangered species use tributaries of Clear Lake Reservoir (hereafter: Cle
Authors
Barbara A. Martin, Summer M. Burdick, Stephen T. Staiger, Caylen M. Kelsey
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Effect of temperature on survival of Lost River Suckers with a natural infection of Ichthyobodo spp.

To compensate for low natural survival of endangered Lost River Suckers Deltistes luxatus, the U.S. Fish and Wildlife Service and the Klamath Tribes have initiated captive rearing programs. We conducted laboratory experiments intended to determine the temperature for optimum growth of juvenile Lost River Suckers; however, due to an unanticipated infection with Ichthyobodo spp., we instead estimate
Authors
Barbara A. Martin, Summer M. Burdick, Maureen K. Purcell, Rachel L. Powers
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Species Management Research Program, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

Effects of harmful algal blooms and associated water-quality on endangered Lost River and shortnose suckers

Anthropogenic eutrophication contributes to harmful blooms of cyanobacteria in freshwater ecosystems worldwide. In Upper Klamath Lake, Oregon, massive blooms of Aphanizomenon flos-aquae and smaller blooms of other cyanobacteria are associated with cyanotoxins, hypoxia, high pH, high concentrations of ammonia, and potentially hypercapnia. Recovery of the endangered Lost River sucker Deltistes luxat
Authors
Summer M. Burdick, David A. Hewitt, Barbara A. Martin, Liam N. Schenk, Stewart A. Rounds
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Mortality of endangered juvenile Lost River Suckers associated with cyanobacteria blooms in mesocosms in Upper Klamath Lake, Oregon

Unsustainably high mortality within the first 2 years of life prevents endangered Lost River Suckers Deltistes luxatus in Upper Klamath Lake, Oregon, from recruiting to spawning populations. Massive blooms of the cyanobacterium Aphanizomenon flos‐aquae and their subsequent death and decay in the lake (bloom‐crashes) are associated with high pH, low percent oxygen saturation, high total ammonia con
Authors
Summer M. Burdick, Danielle M Hereford, Carla M. Conway, Nathan V Banet, Rachel L. Powers, Barbara A. Martin, Diane G. Elliott
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

Effects of microcystin-LR on juvenile Lost River suckers (Deltistes luxatus) during feeding trials, Upper Klamath Lake, Oregon, 2014−16

Executive SummaryHistorically, populations of Lost River suckers (Deltistes luxatus) of the Upper Klamath Basin were so numerous that they were commercially harvested; however, declining numbers throughout the 20th century led to the listing of the species under the United States Endangered Species Act in 1988. Habitat destruction, poor water quality, competition with (and predation by) nonnative
Authors
Barbara A. Martin, Kathy R. Echols, Diane G. Elliott, Kevin Feltz, Carla M. Conway, Summer M. Burdick
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Columbia Environmental Research Center, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

Examination of movements and survival of Pahranagat roundtail chub (Gila robusta jordani) in the Pahranagat River and adjacent waters, Nevada, 2014–18

Executive SummaryThe Pahranagat roundtail chub (Gila robusta jordani; hereinafter “chub”) was federally listed as endangered in 1970 (U.S. Fish and Wildlife Service, 1970). In the decades following the listing, the chub has declined to extremely low numbers (Tuttle and others, 1990; Guadalupe, 2014). Loss of available habitat appears to be one of the main reasons for the decline of this species. H
Authors
Barbara A. Martin, Brian S. Hayes, Alta C. Harris
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Inter-annual variability in apparent relative production, survival, and growth of juvenile Lost River and shortnose suckers in Upper Klamath Lake, Oregon, 2001–15

Executive SummaryPopulations of the once abundant Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) of the Upper Klamath Basin, decreased so substantially throughout the 20th century that they were listed under the Endangered Species Act in 1988. Major landscape alterations, deterioration of water quality, and competition with and predation by exotic species are listed
Authors
Summer M. Burdick, Barbara A. Martin
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Effects of Chiloquin Dam on spawning distribution and larval emigration of Lost River, shortnose, and Klamath largescale suckers in the Williamson and Sprague Rivers, Oregon

Chiloquin Dam was constructed in 1914 on the Sprague River near the town of Chiloquin, Oregon. The dam was identified as a barrier that potentially inhibited or prevented the upstream spawning migrations and other movements of endangered Lost River (Deltistes luxatus
Authors
Barbara A. Martin, David A. Hewitt, Craig M. Ellsworth
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Non-USGS Publications**

Martin, B.A. 1997. Effects of ambient water quality on the endangered Lost River sucker (Deltistes luxatus) in Upper Klamath Lake, Oregon. M.S. thesis, Humboldt State University, Arcata, CA. 55 pp.

**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.

*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government

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