Skip to main content

Daniel J Isaak

Macroscale hydrologic modeling of ecologically relevant flow metrics in small streams, credited to Hamlet, A F, published in 2010. Published in USFS Region 6 annual meeting, Vancouver, WA., in 2010.
Mountain streams provide important habitats for many species, but their faunas are especially vulnerable to climate change because of ectothermic physiologies and movements that are constrained to linear networks that are easily fragmented. Effectively conserving biodiversity in these systems requires accurate downscaling of climatic trends to local habitat conditions, but downscaling is difficult in complex terrains given diverse microclimates and mediation of stream heat budgets by local conditions. We compiled a stream temperature database (n = 780) for a 2500-km river network in central Idaho to assess possible trends in summer temperatures and thermal habitat for two native salmonid species from 1993 to 2006....
Stream hydrology strongly affects the structure of aquatic communities. Changes to air temperature and precipitation driven by increased greenhouse gas concentrations are shifting timing and volume of streamflows potentially affecting these communities. The variable infiltration capacity (VIC) macroscale hydrologic model has been employed at regional scales to describe and forecast hydrologic changes but has been calibrated and applied mainly to large rivers. An important question is how well VIC runoff simulations serve to answer questions about hydrologic changes in smaller streams, which are important habitat for many fish species. To answer this question, we aggregated gridded VIC outputs within the drainage...
Stream thermal regimes and aquatic ecosystems in a changing climate, credited to Luce, Charles H., published in 2009. Published in Western Watersheds and Climate Change Workshop. Boulder, CO. November 17 – 19., in 2009.
Temperature, flow regime and biotic interactions determine differential responses of four trout species to projected climate change (In preparation), credited to Dauwalter, M.M., published in 2011.
View more...
ScienceBase brings together the best information it can find about USGS researchers and offices to show connections to publications, projects, and data. We are still working to improve this process and information is by no means complete. If you don't see everything you know is associated with you, a colleague, or your office, please be patient while we work to connect the dots. Feel free to contact sciencebase@usgs.gov.