Barbara Martin

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  November 12, 2020

  Pahranagat roundtail chub (Gila robusta) - KFFS

  Species Studied - Pahranagat roundtail chub (Gila robusta)

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  Ecosystems Mission Area, Fisheries Program (unpublished), Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

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  November 12, 2020

  Pahranagat roundtail chub (Gila robusta) - KFFS

  Species Studied - Pahranagat roundtail chub (Gila robusta)

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  July 31, 2018

  Tribal Collaboration - KFFS

  Factors limiting survival of juvenile endangered suckers.

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  Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

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  July 31, 2018

  Tribal Collaboration - KFFS

  Factors limiting survival of juvenile endangered suckers.

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  July 31, 2018

  Bull Trout (Salvelinus confluentus) - KFFS

  Species Studied - Bull Trout (Salvelinus confluentus)

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  Ecosystems Mission Area, Fisheries Program (unpublished), Klamath Falls Field Station (KFFS)

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  July 31, 2018

  Bull Trout (Salvelinus confluentus) - KFFS

  Species Studied - Bull Trout (Salvelinus confluentus)

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• Data
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  November 3, 2022

  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

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  Western Fisheries Research Center

  February 4, 2021

  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

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  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)

  June 15, 2017

  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

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  Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)
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• Publications
  Filter Total Items: 32

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  January 10, 2023

  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

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  Ecosystems Mission Area, Fisheries Program (unpublished), Western Fisheries Research Center

  November 9, 2022

  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

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  Ecosystems Mission Area, Fisheries Program (unpublished), Western Fisheries Research Center

  May 2, 2022

  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

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  Ecosystems Mission Area, Fisheries Program (unpublished), Species Management Research Program, Western Fisheries Research Center

  August 27, 2021

  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

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  Ecosystems Mission Area, Fisheries Program (unpublished), Species Management Research Program, Western Fisheries Research Center

  April 30, 2021

  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

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  Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Fisheries Program (unpublished), Species Management Research Program, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

  June 20, 2020

  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

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  Ecosystems Mission Area, Fisheries Program (unpublished), Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

  January 31, 2020

  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

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  Ecosystems Mission Area, Fisheries Program (unpublished), Species Management Research Program, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

  July 25, 2019

  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

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  Ecosystems Mission Area, Fisheries Program (unpublished), Contaminant Biology, Environmental Health Program, Columbia Environmental Research Center, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

  July 8, 2019

  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

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  Ecosystems Mission Area, Fisheries Program (unpublished), Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

  June 15, 2017

  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

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  Ecosystems Mission Area, Fisheries Program (unpublished), Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

  March 1, 2013

  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

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  Ecosystems Mission Area, Fisheries Program (unpublished), Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

  December 5, 2012

  Selenium in aquatic biota inhabiting agricultural drains in the Salton Sea Basin, California

  Resource managers are concerned that water conservation practices in irrigated farmlands along the southern border of the Salton Sea, Imperial County, California, could increase selenium concentrations in agricultural drainwater and harm the desert pupfish (Cyprinodon macularius), a federally protected endangered species. As part of a broader attempt to address this concern, we conducted a 3-year

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  Ecosystems Mission Area, Fisheries Program (unpublished), Columbia Environmental Research Center, Western Fisheries Research Center

  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.