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Sherry P. Wollrab

Sherry on the Boise NF

Fisheries Biologist

322 E. Front St. Ste. 401
Boise, ID 83702
Contact Sherry P. Wollrab

Current Research

  • Crowd-sourcing techniques to amass large data sets for use in multi-scale applications such as NorWeST
  • Spatial database management for research on climate change effects on stream temperature dynamics
  • Establishment of stream temperature monitoring networks and methods to quantify long-term temperature trends and increase efficiency of data collection
  • Application of eDNA techniques to determine rangewide bull trout distribution
  • Technology transfer of applied science tools and procedures

Isaak, Daniel J.; Wenger, Seth J.; Peterson, Erin E.; Ver Hoef, Jay M.; Nagel, David E.; Luce, Charles H.; Hostetler, Steven W.; Dunham, Jason B.; Roper, Brett B.; Wollrab, Sherry P.; Chandler, Gwynne L.; Horan, Dona L.; Parkes-Payne, Sharon. 2017. The NorWeST summer stream temperature model and scenarios for the western U.S.: A crowd-sourced database and new geospatial tools foster a user community and predict broad climate warming of rivers and streams. Water Resources Research. 53: 9181-9205. Isaak, Daniel J.; Horan, Dona L.; Wollrab, Sherry P. 2013. A simple protocol using underwater epoxy to install annual temperature monitoring sites in rivers and streams. Gen. Tech. Rep. RMRS-GTR-314. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 21 p. Isaak, D. J.; Wollrab, S.; Horan, D.; Chandler, G. 2011. Climate change effects on stream and river temperatures across the northwest U.S. from 1980-2009 and implications for salmonid fishes. Climatic Change. 113: 499-524.

Research Interests

I am interested in using data to influence management decisions so that stream habitats are conserved in the face of climate change using the most cost-effective and biologically relevant approaches. I enjoy collaborating and coordinating with resource managers and scientists to create data and information sharing opportunities for the benefit of research and land management. I also find disturbance ecology fascinating, especially the short and long-term effects of wildfire on stream habitat and aquatic communities.

Past Research

Fish habitat inventory procedures and database development, wildfire and prescribed burn effects on large woody debris and other habitat characteristics, and implications of using various fuel reduction practices in riparian areas.


Why This Research is Important

In most aspects of fish and fish habitat research, we are not data poor, but rather, lacking in data organization and coordination. Given 1. There are huge quantities of historical data in addition to continuing data collection, 2. The massive expenditures associated with such data collection, and 3. The vital importance of long-term, and spatially explicit and extensive data sets, it only makes sense to tap these data to address time-sensitive conservation questions that require large long-term and reliable data sets.


  • University of Idaho, Master Of Natural Resources, Natural Resources, 2001
  • University of New Hampshire, B.S., Wildlife Management, 1988
  • Professional Organizations

    • American Fisheries Society


    RMRS, 2016
    Science Delivery Team Award
    Rise to the Future, 2015
    Jim Sedell Award for Research

    Featured Publications


    Isaak, Daniel J.; Luce, Charles H.; Horan, Dona; Chandler, Gwynne L.; Wollrab, Sherry P.; Dubois, William B.; Nagel, David E., 2020. Thermal regimes of perennial rivers and streams in the western United States
    Isaak, Daniel J.; Luce, Charles H.; Horan, Dona; Chandler, Gwynne L.; Wollrab, Sherry P.; Nagel, David E., 2018. Global warming of salmon and trout rivers in the northwestern U.S.: Road to ruin or path through purgatory?
    Isaak, Daniel J.; Luce, Charles H.; Chandler, Gwynne L.; Horan, Dona; Wollrab, Sherry P., 2018. Principal components of thermal regimes in mountain river networks
    fishing on snake river
    Anyone familiar with the Columbia River’s massive salmon die-off a few summers ago might also be concerned about how climate change will affect fish habitats. The 2015 die-off killed more than 250,000 fish and was blamed on record low streamflows and high water temperatures. While coldwater fish such as salmon and trout can adjust to slightly warmer-than-normal temperatures for short periods, abnormally high temperatures for prolonged periods lower oxygen levels, increase the likelihood of deadly diseases, and cause life-threatening physiological stress.
    The website provides: 1) A large list of supporting science behind eDNA sampling. 2) The recommended field protocol for eDNA sampling and the equipment loan program administered by the NGC. 3) A systematically-spaced sampling grid for all flowing waters of the U.S. in a downloadable format that includes unique database identifiers and geographic coordinates for all sampling sites. Available for download in an Geodatabase or available by ArcGIS Online map. This sampling grid can be used to determine your field collection sites to contribute. 4) The lab results of eDNA sampling at those sites where project partners have agreed to share data.
    Thermal regimes are important to aquatic ecosystems because they strongly dictate species distributions, productivity, and abundance. The stream temperature modeling and monitoring web site provides resources to help those in the western United States organize temperature monitoring efforts, describes techniques for measuring stream temperatures, and describes several statistical models for predicting stream temperatures and thermally suitable fish habitats from temperature data.