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New FHC, ET-AL or ELR Publications

Long-term Monitoring of Bonneville Cutthroat Trout

3/1/2018

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Stephen Bennett published the results of seven years of spawning surveys for Bonneville Cutthroat Trout in a Logan River tributary as part of his post-doctoral research with Brett Roper of the USFS. Little is known about the variability in the spatial and temporal distribution of spawning potamodromous trout despite decades of research directed at salmonid spawning ecology and the increased awareness that conserving life history diversity should be a focus of management. We monitored a population of fluvial–resident Bonneville Cutthroat Trout Oncorhynchus clarkii utah in a tributary to the Logan River, Utah, from 2006 to 2012 to gain insight into the distribution and timing of spawning and what factors may influence these spawning activities.We monitored Bonneville Cutthroat Trout using redd surveys with multiple observers and georeferenced redd locations.We documented an extended spawning period that lasted from late April tomid-July. The onset,median, and end of spawning was best predicted by the mean maximum water temperature during the first 13 weeks of the year (F=130. 4, df=5, R2=0.96, P<0.0001) with spawning beginning and ending earlier in years that had warmer water temperatures prior to spawning. The distribution of redds was clumped each year and the relative density of redds was greater in a reach dominated by dams constructed by beavers Castor canadensis. Both dam failure and construction appeared to be responsible for creating new spawning habitat that was quickly occupied, demonstrating rapid temporal response to local habitat changes. Bonneville Cutthroat Trout appeared to establish and defend a redd for up to 2 d, and spawning most often occurred between similar-sized individuals. Spawning surveys for potamodromous trout are an underutilized tool that could be used to better understand the distribution and timing of spawning as well as determine the size and trends of the reproducing portion of populations of management concern. Without efforts to document the diversity of this important aspect of potamodromous trout life history, prioritization of conservation will be problematic.
bennett etal 2014 - variation in spawning distribution.pdf
Originally posted Mar 2, 2015, 9:44 AM by Stephen Bennett
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  • Home
    • Fluvial Habitats Center
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    • Bouwes ELR Lab
    • News & Annoucements
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    • Contact
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    • People in the Lab... Coming & Going
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      • Lauren Herbine
      • Karen Bartelt
    • Research Staff >
      • Research Scientists >
        • Joe Wheaton
        • Nicolaas Bouwes
        • Wally Macfarlane
        • Stephen Bennett
      • Technicians >
        • Cashe Rasmussen
        • Chalese Hafen
        • Dylan Baum >
          • Brian Ferrara
    • Where are they now? >
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        • Reid Camp
        • Florence Consolati
        • Daniel Hamill
        • Konrad Hafen
        • James Hensleigh
        • Nate Hough-Snee
        • Alan Kasprak
        • Martha Jensen
        • Ryan Lokteff
        • Connor Penrod
        • Rebecca Rossi
        • Sonya Welsh
      • Research Scientists >
        • Sara Bangen
        • James Hensleigh
        • Natalie Kramer
        • Pete McHugh
        • Elijah Portugal
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        • Gary O'Brien
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        • BRAT-John Day
        • BRAT-NF Burnt River
        • BRAT-Idaho
        • BRAT-Utah
        • BRAT-TNC
        • BRAT-GYA
        • Survey123
      • ELR: Asotin LWD Restoration and IMW
      • Price River Channel Analysis
    • Past Projects >
      • BLM >
        • BLM: Historic Sand Cliff Signatures Public Archeology Program
      • DOE: ICRRR >
        • DOE/ICRRR: Geomorphic Change Detection 4.0 Software Development
        • DOE/ICRRR: Geomorphic Change Detection in the Grand Canyon
        • DOE/ICRRR: MoRPHED PhD Studentship
      • Idaho Power Company >
        • Idaho Power: TLS Data Analysis
      • ELR >
        • ELR/BPA: CHaMP Grand Ronde Crew Variability Study
        • ELR/BPA: ISEMP Lemhi Topographic Survey Technique Intercomparison
        • ELR/BPA: ISEMP Bridge Creek Restoration & IMW
        • ELR/FHC/CTWS: Pine Creek Beaver Assisted Restoration Pilot Project
      • NSF >
        • NSF: zCloudTools: Making Point Clouds Useful for Earth Science
        • NSF: Sensitivity of Braided River Morphodynamics to Sediment Supply
      • UDWR >
        • UDWR: Beaver Restoration Assessment Tool (BRAT)
      • USFS >
        • USFS Classification of Columbia River Basin Riparian Vegetation
        • USFS: Comparison of Traditional Versus Ground-Based LiDaR Instream Haibtat Assessments
        • USFS: Temple Fork Watershed Fish & Beaver Ecology
      • USGS >
        • USGS: Big Rivers Monitoring Protocol Development
        • USGS: Dynamism and Persistence of Eddy Sand Bars in Grand Canyon
        • USGS: Riparian Vegetation Analysis
        • USGS: Support in Geographic and Geomorphic Information Analysis for the Colorado River in Grand Canyon
      • Other Sponsors (one off) >
        • BPA/SFR: Development of CHaMP Transformation Tool
        • GCT: Pilot Study: Testing the Beaver Restoration Assessment Tool (BRAT)
        • NOAA: Linking Fisheries,
        • NPS: Assessment of Indicator Sites
        • USU: Tracking Ecogeomorphic Dynamics in Beaver Dam Complexes
    • Study Site Pages >
      • Bridge Creek >
        • 2009 BDSS Structures
        • Bridge Creek April 2010 Drone Survey
      • River Feshie >
        • The River Feshie Catchment
        • Our Research
        • The Team
        • Posters, Papers, & More
        • Photo Gallery
  • Resources
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      • ETAL Reading Group Zotero Library
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      • Courses & Workshops by Joe
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        • Get a QR Code
        • GeoJSON
        • Markdown
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        • ArcGIS Education Edition
        • GIS Data Sources >
          • Connecting To The APFO Services
          • Connecting to the Utah AGRC Discover Imagery and Base Map Server
          • High Resolution Imagery for Utah State
      • How to Use Specific Software >
        • Adobe Illustrator >
          • Making GCD Figures for ET-AL Lab Using ArcGIS & Adobe Illustrator
        • ArcGIS Desktop - ArcMap >
          • GIS Tutorials
          • Creating DEMs, TINs and Terrains
          • How to divide polylines into a specified segment length
          • Simple Change Detection in ArcGIS
          • Working with Styles in ArcGIS
          • Fixing ActiveX Warning in ArcGIS 10.5
        • Box >
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        • EndNote >
          • EndNote X4 Basics
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        • GitHub >
          • Make a GitHub Account
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            • Citing in Google Docs
            • Cite in Word
      • Reccomended Software & Utilities
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        • rtkGPS
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        • Uploading Content to Research Gate
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        • Standard Software Suite
        • Lab Software License
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        • Editing Workshop Flyers & Webpages
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