1 / 13

Population Dynamics of Snake River Trout: Insights from Colorado's Ecosystem

This research, conducted by Jon Ewert from the Colorado Division of Parks and Wildlife and Andrew Todd from the US Geological Survey, explores the population dynamics of trout in the Snake River watershed. Key findings include the impacts of metal concentrations on fish habitat and survival rates of brook and rainbow trout. The study utilizes data from notable locations such as Arapahoe Basin Ski Area, Chihuahua Gulch, and the Snake River, providing a comprehensive understanding of the challenges facing these trout populations in Colorado.

tucker
Télécharger la présentation

Population Dynamics of Snake River Trout: Insights from Colorado's Ecosystem

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Snake River Trout Population Dynamics Jon Ewert, Colorado Division of Parks and Wildlife Andrew Todd, US Geological Survey All photos by Bob Berwyn

  2. Arapahoe Basin Ski Area Chihuahua Gulch North Fork Snake River To Silverthorne Snake River Peru Creek  Keystone Ski Area MAP AREA Deer Creek 0 1 2 Upper Snake River N Denver SCALE (miles) C O L O R A D O LEGEND Continental Fish Absent Divide Fish Present 108 ° 104 °

  3. “Tram Bridge” station

  4. Brook trout capture, Tram Bridge station

  5. Rainbow trout overwinter survival

  6. Rainbow trout body condition: 2009 sample

  7. “Hole 7” Station

  8. Hole 7 Station vs. Tram Bridge: Brook Trout Population Estimates

  9. Snake River Above Peru Creek • Increases in metals concentrations beyond toxicity thresholds may render currently marginal fish habitat uninhabitable

  10. Thanks! . . . questions?

More Related