Daniel J. Isaak

Daniel J. Isaak

Research Fish Biologist

Rocky Mountain Research Station

322 East Front Street, Suite 401
Boise, ID 83702
United States

Phone

208-373-4385

Email

Publications & Products
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Featured Publications

Michael K. Young, Daniel J. Isaak, Kevin S. McKelvey, Taylor M. Wilcox, Daniel M. Bingham, Kristine L. Pilgrim, Kellie J. Carim, Matthew R. Campbell, Matthew P. Corsi, Dona L. Horan, David E. Nagel, Michael K. Schwartz. 2016. Climate, demography, and zoogeography predict introgression thresholds in salmonid hybrid zones in Rocky Mountain streams
Daniel J. Isaak, Michael K. Young, David E. Nagel, Dona L. Horan, Matthew C. Groce. 2015. The cold-water climate shield: Delineating refugia for preserving salmonid fishes through the 21st century
Daniel J. Isaak, Dona L. Horan. 2011. An evaluation of underwater epoxies to permanently install temperature sensors in mountain streams
Seth J. Wenger, Charles H. Luce, Alan F. Hamlet, Daniel J. Isaak, Helen M. Neville. 2010. Macroscale hydrologic modeling of ecologically relevant flow metrics
Daniel J. Isaak, Charles H. Luce, Bruce E. Rieman, David E. Nagel, Erin E. Peterson, Dona L. Horan, Sharon Parkes, Gwynne L. Chandler. 2010. Effects of climate change and wildfire on stream temperatures and salmonid thermal habitat in a mountain river network
Bruce E. Rieman, Daniel J. Isaak. 2010. Climate change, aquatic ecosystems, and fishes in the Rocky Mountain West: implications and alternatives for management
Jim McKean, Dan Isaak, Wayne Wright. 2009. Improving stream studies with a small-footprint green lidar

Other Publications

Joy Drohan, Daniel Isaak, Charlie Luce, Michael K. Young, Dona Horan, David Nagel, Sherry Wollrab, Gwynne Chandler, Scott Barndt, Yvette Converse, Sean Finn, Scott Spaulding, Brian Staab. 2024. Some good news on climate change: High mountain streams act as strongholds for cold-water species
Daniel J. Isaak, Dona L. Horan, Sherry P. Wollrab. 2024. Air temperature data source affects inference from statistical stream temperature models in mountainous terrain
M. R. Fuller, N. E. Detenbeck, P. Leinenbach, R. Labiosa, D. Isaak. 2024. Scenario planning management actions to restore cold water stream habitat: Comparing mechanistic and statistical modeling approaches
Daniel J. Isaak, Charles H. Luce. 2023. Elevation-dependent warming of streams in mountainous regions: implications for temperature modeling and headwater climate refugia
Daniel J. Isaak, Michael K. Young. 2023. Cold-water habitats, climate refugia, and their utility for conserving salmonid fishes
Neil J. Mochnacz, Mark K. Taylor, Margaret F. Docker, Dan J. Isaak. 2023. An ecothermal paradox: Bull trout populations diverge in response to thermal landscapes across a broad latitudinal gradient
Matthew R. Fuller, Naomi E. Detenbeck, Peter Leinenbach, Rochelle Labiosa, Daniel Isaak. 2023. Spatial and temporal variability in stream thermal regime drivers for three river networks during the summer growing season
Jay M. Ver Hoef, Michael DumelleI, Matt Higham, Erin E. Peterson, Daniel J. Isaak. 2023. Indexing and partitioning the spatial linear model for large data sets
Edgar Santos-Fernandez, Jay M. Ver Hoef, James McGree, Daniel J. Isaak, Kerrie Mengersen, Erin E. Peterson. 2023. SSNbayes: An R Package for Bayesian spatio-temporal modelling on stream networks
William L. Gaines, Paul F. Hessburg, Gregory H. Aplet, Paul Henson, Susan J. Prichard, Derek J. Churchill, Gavin M. Jones, Daniel J. Isaak, Carly Vynne. 2022. Climate change and forest management on federal lands in the Pacific Northwest, USA: Managing for dynamic landscapes
David S. Pilliod, Robert S. Arkle, Russell F. Thurow, Daniel J. Isaak. 2022. Hydroclimatic conditions, wildfire, and species assemblages influence co‐occurrence of bull trout and tailed frogs in northern Rocky Mountain streams
Matthew R. Fuller, Peter Leinenbach, Naomi E. Detenbeck, Rochelle Labiosa, Daniel J. Isaak. 2022. Riparian vegetation shade restoration and loss effects on recent and future stream temperatures
Edgar Santos-Fernandez, Jay M. Ver Hoef, Erin E. Peterson, James McGree, Daniel J. Isaak, Kerrie Mengersen. 2022. Bayesian spatio-temporal models for stream networks
Daniel J. Isaak, Michael K. Young, Dona L. Horan, David Nagel, Michael K. Schwartz, Kevin S. Mckelvey. 2022. Do metapopulations and management matter for relict headwater bull trout populations in a warming climate?
Michael K. Young, Rebecca Smith, Kristine L. Pilgrim, Daniel J. Isaak, Kevin S. McKelvey, Sharon Parkes, Jacob Egge, Michael K. Schwartz. 2022. A molecular taxonomy of Cottus in western North America
Gregory R. Jacobs, Russell F. Thurow, John H. Buffington, Daniel J. Isaak, Seth J. Wenger. 2022. Erratum: Climate, fire regime, geomorphology, and conspecifics influence the spatial distribution of Chinook salmon redds
Daniele Tonina, James A. McKean, Daniel Isaak, Rohan M. Benjankar, Chunling Tang, Qiuwen Chen. 2022. Climate change shrinks and fragments salmon habitats in a snow-dependent region
Michael K. Young, Daniel J. Isaak, David Nagel, Dona L. Horan, Kellie J. Carim, Thomas W. Franklin, Victoria A. Zeller, Brett Roper, Michael K. Schwartz. 2022. Broad-scale eDNA sampling for describing aquatic species distributions in running waters: Pacific lamprey Entosphenus tridentatus in the upper Snake River, USA
William Jeff Reeder, Frank Gariglio, Ryan Carnie, Chunling Tang, Daniel Isaak, Qiuwen Chen, Zhongbo Yu, James A. McKean, Daniele Tonina. 2021. Some (fish might) like it hot: Habitat quality and fish growth from past to future climates
Craig Paukert, Julian D. Olden, Abigail J. Lynch, David D. Breshears, R. Christopher Chambers, Cindy Chu, Margaret Daly, Kimberly L. Dibble, Jeff Falke, Dan Issak, Peter Jacobson, Olaf P. Jensen, Daphne Munroe. 2021. Climate change effects on North American fish and fisheries to inform adaptation strategies
Michael T. LeMoine, Lisa A. Eby, Chris G. Clancy, Leslie G. Nyce, Michael J. Jakober, Dan J. Isaak. 2020. Landscape resistance mediates native fish species distribution shifts and vulnerability to climate change in riverscapes
Gregory R. Jacobs, Russell F. Thurow, John M. Buffington, Dan Isaak, Seth J. Wenger. 2020. Climate, fire regime, geomorphology, and conspecifics influence the spatial distribution of Chinook Salmon redds
Daniel Isaak, Michael Young. 2020. One year after launch, eDNAtlas proves its worth
Helen M. Neville, Douglas R. Leasure, Daniel C. Dauwalter, Jason B. Dunham, Robin Bjork, Kurt A. Fesenmyer, Nathan D. Chelgren, Mary M. Peacock, Charles H. Luce, Daniel J. Isaak, Lee Ann Carranza, Jon Sjoberg, Seth J. Wenger. 2020. Application of multiple-population viability analysis to evaluate species recovery alternatives
Daniel J. Isaak, Charles H. Luce, Dona L. Horan, Gwynne L. Chandler, Sherry P. Wollrab, William B. Dubois, David E. Nagel. 2020. Thermal regimes of perennial rivers and streams in the western United States
Charles Luce, Dan Isaak. 2018. Fishing for climate data: How recent research is helping to forecast changes in salmon and trout habitat
Michael K. Young, Daniel J. Isaak, Scott Spaulding, Cameron A. Thomas, Scott A. Barndt, Matthew C. Groce, Dona Horan, David E. Nagel. 2018. Climate vulnerability of native cold-water salmonids in the Northern Rockies Region [Chapter 5]
Daniel J. Isaak, Charles H. Luce, Dona L. Horan, Gwynne Chandler, Sherry Wollrab, David E. Nagel. 2018. Global warming of salmon and trout rivers in the northwestern U.S.: Road to ruin or path through purgatory?
Daniel J. Isaak, Michael K. Young, Cynthia Tait, Daniel Duffield, Dona L. Horan, David E. Nagel, Matthew C. Groce. 2018. Effects of climate change on native fish and other aquatic species [Chapter 5]
Daniel J. Isaak, Michael K. Young, Callie McConnell, Brett B. Roper, Eric K. Archer, Brian Staab, Christine Hirsch, David E. Nagel, Michael K. Schwartz, Gwynne L. Chandler. 2018. Crowd-sourced databases as essential elements for Forest Service partnerships and aquatic resource conservation
Brian Cooke, Mike Battaglia, Kathleen Dwire, Dan Isaak, Linda Joyce, David Merritt, Jill Oropeza, Claudia Regan, Lindsay Reynolds, Janine Rice, Trey Schillie. 2018. Warming and warnings: Assessing climate change vulnerability in the Rocky Mountain Region
Taylor M. Wilcox, Michael K. Young, Kevin S. McKelvey, Daniel J. Isaak, Dona L. Horan, Michael K. Schwartz. 2018. Fine-scale environmental DNA sampling reveals climate-mediated interactions between native and invasive trout species
Daniel J. Isaak, Michael K. Schwartz. 2018. From expensive to efficient: New eDNAtlas shares nationwide aquatic species information
Daniel J. Isaak, Charles H. Luce, Gwynne L. Chandler, Dona L. Horan, Sherry P. Wollrab. 2018. Principal components of thermal regimes in mountain river networks
Douglas R. Leasure, Seth J. Wenger, Nathan D. Chelgren, Helen M. Neville, Daniel C. Dauwalter, Robin Bjork, Kurt A. Fesenmyer, Jason B. Dunham, Mary M. Peacock, Charlie H. Luce, Abby C. Lute, Daniel J. Isaak. 2018. Hierarchical multi-population viability analysis
Daniel J. Isaak, Jay M. Ver Hoef, Erin E. Peterson, Dona L. Horan, David E. Nagel. 2017. Scalable population estimates using spatial-stream-network (SSN) models, fish density surveys, and national geospatial database frameworks for streams
Daniel J. Isaak, Seth J. Wenger, Michael K. Young. 2017. Big biology meets microclimatology: Defining thermal niches of ectotherms at landscape scales for conservation planning
Caty F. Clifton, Kate T. Day, Kathie Dello, Gordon E. Grant, Jessica E. Halofsky, Daniel J. Isaak, Charles H. Luce, Mohammad Safeeq, Brian P. Staab, John Stevenson. 2017. Climate change and hydrology in the Blue Mountains [Chapter 3]
Daniel J. Isaak, Katherine Ramsey, John C. Chatel, Deborah L. Konnoff, Robert A. Gecy, Dona Horan. 2017. Climate change, fish, and aquatic habitat in the Blue Mountains [Chapter 5]
Michael K. Young, Daniel J. Isaak, Kevin S. McKelvey, Taylor M. Wilcox, Matthew R. Campbell, Matthew P. Corsi, Dona Horan, Michael K. Schwartz. 2017. Ecological segregation moderates a climactic conclusion to trout hybridization
Daniel J. Isaak, Seth J. Wenger, Erin E. Peterson, Jay M. Ver Hoef, David E. Nagel, Charles H. Luce, Steven W. Hostetler, Jason B. Dunham, Brett B. Roper, Sherry P. Wollrab, Gwynne L. Chandler, Dona L. Horan, Sharon Parkes-Payne. 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
Daniel Isaak, Michael Young. 2017. Delineating climate refugia for native aquatic species with big crowd-sourced databases
Ryan Carnie, Daniele Tonina, Jim McKean, Daniel Isaak. 2016. Habitat connectivity as a metric for aquatic microhabitat quality: Application to Chinook salmon spawning habitat
James M. Vose, Chelcy Ford Miniat, Charles H. Luce, Heidi Asbjornsen, Peter V. Caldwell, John L. Campbell, Gordon E. Grant, Daniel J. Isaak, Steven P. II.Loheide, Ge Sun. 2016. Echohydrological implications of drought for forests in the United States
Daniel J. Isaak, Michael K. Young, Charlie Luce, Steven W. Hostetler, Seth J. Wenger, Erin E. Peterson, Jay M. Ver Hoef, Matthew C. Groce, Dona L. Horan, David E. Nagel. 2016. Slow climate velocities of mountain streams portend their role as refugia for cold-water biodiversity
Rohan Benjankar, Daniele Tonina, Alessandra Marzadri, Jim McKean, Daniel J. Isaak. 2016. Effects of habitat quality and ambient hyporheic flows on salmon spawning site selection
J. E. Williams, Daniel Isaak, J. Imhof, D. A. Hendrickson, J. R. McMillan. 2015. Cold-water fishes and climate change in North America
Daniel J. Isaak, Erin E. Peterson, Jay M. Ver Hoef, Seth J. Wenger, Jeffrey A. Falke, Christian E. Torgersen, Colin Sowder, E. Ashley Steel, Marie-Josee Fortin, Chris E. Jordan, Aaron S. Ruesch, Nicholas Som, Pascal Monestiez. 2014. Applications of spatial statistical network models to stream data
Charles Luce, Brian Staab, Marc Kramer, Seth Wenger, Dan Isaak, Callie McConnell. 2014. Sensitivity of summer stream temperatures to climate variability in the Pacific Northwest
Lisa Holsinger, Robert E. Keane, Daniel J. Isaak, Lisa Eby, Michael K. Young. 2014. Relative effects of climate change and wildfires on stream temperatures: A simulation modeling approach in a Rocky Mountain watershed
Daniel J. Isaak. 2014. Climate change and the future of freshwater fisheries
Jen Stamp, Anna Hamilton, Michelle Craddock, Laila Parker, Allison H. Roy, Daniel J. Isaak, Zach Holden, Margaret Passmore, Britta G. Bierwagen. 2014. Best practices for continuous monitoring of temperature and flow in wadeable streams
Dan Isaak. 2014. Blogging fish science
Sarah Hines, Dan Isaak, Charles Luce, Michael K. Young. 2014. Climate change, crowd-sourcing, and conserving aquatic biotas in the Rocky Mountains this century
Daniel J. Isaak, Michael K. Young, David Nagel, Dona Horan. 2014. Cold water as a climate shield to preserve native trout through the 21st Century
Daniel J. Isaak, Bruce E. Rieman. 2013. Stream isotherm shifts from climate change and implications for distributions of ectothermic organisms
Erin E. Peterson, Jay M. Ver Hoef, Dan J. Isaak, Jeffrey A. Falke, Marie-Josee Fortin, Chris E. Jordan, Kristina McNyset, Pascal Monestiez, Aaron S. Ruesch, Aritra Sengupta, Nicholas Som, E. Ashley Steel, David M. Theobald, Christian E. Torgersen, Seth J. Wenger. 2013. Modelling dendritic ecological networks in space: An integrated network perspective
Douglas P. Peterson, Seth J. Wenger, Bruce E. Rieman, Daniel J. Isaak. 2013. Linking climate change and fish conservation efforts using spatially explicit decision support tools
Jaime R. Goode, John M. Buffington, Daniele Tonina, Daniel J. Isaak, Russell F. Thurow, Seth Wenger, David Nagel, Charlie Luce, Doerthe Tetzlaff, Chris Soulsby. 2013. Potential effects of climate change on streambed scour and risks to salmonid survival in snow-dominated mountain basins
Seth J. Wenger, Nicholas A. Som, Daniel C. Dauwalter, Daniel J. Isaak, Helen M. Neville, Charles H. Luce, Jason B. Dunham, Michael K. Young, Kurt D. Fausch, Bruce E. Rieman. 2013. Probabilistic accounting of uncertainty in forecasts of species distributions under climate change
Daniel J. Isaak, Dona L. Horan, Sherry P. Wollrab. 2013. A simple protocol using underwater epoxy to install annual temperature monitoring sites in rivers and streams
Robert Al-Chokhachy, Seth J. Wenger, Daniel J. Isaak, Jeffrey L. Kershner. 2013. Characterizing the thermal suitability of instream habitat for salmonids: A cautionary example from the Rocky Mountains
Charles Luce, Penny Morgan, Kathleen Dwire, Daniel Isaak, Zachary Holden, Bruce Rieman. 2012. Climate change, forests, fire, water, and fish: Building resilient landscapes, streams, and managers
Daniel J. Isaak, Clint C. Muhlfeld, Andrew S. Todd, Robert Al-Chokhachy, James Roberts, Jeffrey L. Kershner, Kurt D. Fausch, Steven W. Hostetler. 2012. The past as prelude to the future for understanding 21st-Century climate effects on Rocky Mountain trout
Seth J. Wenger, Daniel J. Isaak, Jason B. Dunham, Kurt D. Fausch, Charlie Luce, Helen M. Neville, Bruce E. Rieman, Michael K. Young, David E. Nagel, Dona L. Horan, Gwynne L. Chandler. 2011. Role of climate and invasive species in structuring trout distributions in the interior Columbia River Basin, USA
Seth J. Wenger, Daniel J. Isaak, Charlie Luce, Helen M. Neville, Kurt D. Fausch, Jason B. Dunham, Daniel C. Dauwalter, Michael K. Young, Marketa M. Elsner, Bruce E. Rieman, Alan F. Hamlet, Jack E. Williams. 2011. Flow regime, temperature, and biotic interactions drive differential declines of trout species under climate change [includes Supporting Information]
Daniel J. Isaak. 2011. Stream temperature monitoring and modeling: Recent advances and new tools for managers
D. J. Isaak, S. Wollrab, D. Horan, G. Chandler. 2011. Climate change effects on stream and river temperatures across the northwest U.S. from 1980-2009 and implications for salmonid fishes
Dan Isaak, Bruce Rieman, Dona Horan. 2009. A watershed-scale monitoring protocol for bull trout
Jean-Yves Courbois, Stephen L. Katz, Daniel J. Isaak, E. Ashley Steel, Russell F. Thurow, A. Michelle Wargo Rub, Tony Olsen, Chris E. Jordan. 2008. Evaluating probability sampling strategies for estimating redd counts: an example with Chinook salmon (Oncorhynchus tshawytscha)
Daniel J. Isaak, Russell F. Thurow, Bruce E. Rieman, Jason B. Dunham. 2007. Chinook salmon use of spawning patches: Relative roles of habitat quality, size, and connectivity
Helen Neville, Daniel Isaak, Russell Thurow, Jason Dunham, Bruce Rieman. 2007. Microsatellite variation reveals weak genetic structure and retention of genetic variability in threatened Chinook salmon (Oncorhynchus tshawytcha) within a Snake River watershed
Bruce E. Rieman, Daniel Isaak, Susan Adams, Dona Horan, David Nagel, Charles Luce, Deborah Myers. 2007. Anticipated climate warming effects on bull trout habitats and populations across the interior Columbia River basin
Daniel J. Isaak, Russell F. Thurow. 2006. Network-scale spatial and temporal variation in Chinook salmon (Oncorhynchus tshawytscha) redd distributions: patterns inferred from spatially continuous replicate surveys
H. M. Neville, D. J. Isaak, J. B. Dunham, R. F. Thurow, B. E. Rieman. 2006. Fine-scale natal homing and localized movement as shaped by sex and spawning habitat in Chinook salmon: Insights from spatial autocorrelation analysis of individual genotypes
Daniel J. Isaak, Wayne A. Hubert. 2004. Nonlinear response of trout abundance to summer stream temperatures across a thermally diverse montane landscape
D. J. Isaak, R. F. Thurow, B. E. Rieman, J. B. Dunham. 2003. Temporal variation in synchrony among chinook salmon (Oncorhynchus tshawytscha) redd counts from a wilderness area in central Idaho

Citations of Non-Forest Service Publications

Chandler, G.L.; Wollrab, S.P.; Horan, D. L.; Nagel, D. E.; Parkes, S.L.; Isaak, D.J.; Horan, D.L; Wenger, S.J.; Peterson, E.E.; Ver Hoef, J.M.; Hostetler, S.W.; Luce, C.H.; Dunham, J.B.; Kershner, J.L.; Roper, B.B. 2016. NorWeST stream temperature data summaries for the western U.S. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2016-0032.
Isaak, D.J.; Wenger, S.J.; Peterson, E.E.; Ver Hoef, J.M.; Hostetler, S.W.; Luce, C.H.; Dunham, J.B.; Kershner, J.L.; Roper, B.B.; Nagel, D.E.; Chandler, G.L.; Wollrab, S.P.; Parkes, S.L.; Horan, D.L. 2016. NorWeST modeled summer stream temperature scenarios for the western U.S. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2016-0033.
Young, Michael K.; Isaak, Daniel J.; McKelvey, Kevin S.; Schwartz, Michael K.; Carim, Kellie J.; Fredenberg, Wade; Wilcox, Taylor M.; Franklin, Thomas W.; Chandler, Gwynne L.; Nagel, David E.; Parkes-Payne, Sharon L.; Horan, Dona L.; Wollrab, Sherry P. 2017. Species occurrence data from the Range-Wide Bull Trout eDNA Project. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2017-0038.
Schwartz, M. K., Young, M.K., McKelvey, K.S., Isaak, D.J., Nagel, D.E., Franklin, T.W., Greaves, S.E., Dysthe, J.C., Chandler, G.L., Wollrab, S.P., Carim, K.J., Wilcox, T.M., Parkes-Payne, S.L., Horan, D.L. 2018. Species occurrence data from the Aquatic eDNAtlas database. Fort Collins, CO: Forest Service Research Data Archive. DOI Pending.

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Last updated September 30, 2024

Daniel J. Isaak

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