J indicates CRITFC employee.
May 27, 2008
Salmon and steelhead of the Pacific Northwest are dependent on the delivery of abundant, cool water from seasonal snowmelt to support their migration, spawning, incubation, and rearing. The anthropogenic release of greenhouse gases, which is raising global air temperatures, poses a threat to the...
March 5, 2020
Snorkel surveys are a widely used method of assessing salmonid abundance in small streams throughout the Pacific Northwest, however, they are imperfect in the sense that observers rarely count all fish present at a site. These counts are generally calibrated to an independent measure of fish...
Ben Staton, Casey Justice, Seth White, Ted Sedell, Lauren Burns, and Matt Kaylor
April 16, 2016
A Method for Characterizing Late-season Low-flow Regime in the Upper Grande Ronde River Basin, Oregon
This report describes a method for estimating ecologically relevant low-flow metrics that quantify late‑season streamflow regime for ungaged sites in the upper Grande Ronde River Basin, Oregon. The analysis presented here focuses on sites sampled by the Columbia River Inter‑Tribal Fish...
Valerie J. Kelly and Seth M. White
June 4, 1996
Monitoring of stream system health is the systematic collection of data on environmental parameters that are linked to beneficial uses and known to be sensitive to land management activities and natural events. Monitoring is used to investigate relationships, validate assumptions and models, assess...
Dale A. McCullough and F. A. Espinosa, Jr.
March 1, 2019
It is asserted that reduction or elimination of hatchery stocking will increase natural‐origin salmon Oncorhynchus spp. and steelhead O. mykiss production. We conducted an analysis of steelhead population census data (1958–2017) to determine whether elimination of summer...
Ian Courter, Garth Wyatt, Russell Perry, John Plumb, Forrest Carpenter, Nicklaus Ackerman, Robert Lessard, and Peter Galbreath
October 23, 2020
A New Estimator to Correct for Bias from Tag Rate Expansion on Natural-origin Fish Attributes in Mixed-stock Analysis using Parentage-based Tagging
In fisheries where hatchery and natural-origin conspecifics occur as mixed stocks, it is often important to estimate both the natural-origin proportion of the mixture and the composition of attributes within the natural-origin portion (e.g., genetic stock, sex, and age-class). These estimates are...
Thomas Delomas and Jon Hess
January 1, 2005
We developed a model to capture the interaction of two factors (habitat and hatchery indicators) on salmon abundance, and provide a framework for evaluating alternative restoration actions for salmon in the northwestern United States, assuming specific ocean conditions and harvest rates. We modeled...
Rishi Sharma, Andrew B. Cooper, and Ray Hilborn
February 22, 1999
A Review and Synthesis of Effects of Alterations to the Water Temperature Regime on Freshwater Life Stages of Salmonids, with Special Reference to Chinook Salmon
Despite the great significance of the Columbia River Thermal Effects Study (a joint publication of the USEPA, NMFS, and AEC) and a compilation of temperature criteria and methods by the National Academy of Sciences in the 1970s that has been key EPA guidance on water temperature, too little...
May 7, 2011
A Review of Genetic Evaluation Tools for Conservation and Management of North American Sturgeons: Roles, Benefits, and Limitations
This paper summarizes one component of a sturgeon conservation genetics workshop held in conjunction with the Third Annual Conference of the North American Chapter of the World Sturgeon Conservation Society from 31 August through 3 September, 2010, at Chico Springs, Montana, USA. The purpose of this...
Paul. J. Anders, Andrea Drauch-Schreier, Jeff Rodzen, Madison S. Powell, Shawn Narum, and James A. Crossman
October 25, 2012
A Simulation of Water Temperature in the Upper Grande Ronde Basin with Future Climate Change Scenarios
Stream temperature is an important environmental variable for the freshwater stages of salmon and other coldwater fishes. For this study, we used a water temperature model of the Upper Grande Ronde River basin, an area of ongoing and potential salmon habitat restoration in NE Oregon. The Heat...