HR: 1340h
AN: H13B-1335 [Abstracts]
TI: Wildfire, channel disturbance, and stream temperature: spatio-temporal patterns and associations with
the distribution of fish and amphibians in central Idaho
AU: Dunham, J
EM: jdunham@usgs.gov
AF: USGS FRESC, 3200 SW Jefferson Way, Corvallis, OR 97331
United States
AU: * Luce, C
EM: cluce@fs.fed.us
AF: USDA Forest Service, Rocky Mountain Research Station, 322 E Front St., Suite 401, Boise, ID 83702
United States
AU: Rosenberger, A
EM: arosenberger@fs.fed.us
AF: USDA Forest Service, Rocky Mountain Research Station, 322 E Front St., Suite 401, Boise, ID 83702
United States
AU: Rieman, B
EM: brieman@fs.fed.us
AF: USDA Forest Service, Rocky Mountain Research Station, 322 E Front St., Suite 401, Boise, ID 83702
United States
AB:
Temperature is a critical factor in stream ecosystems, and one that is altered by wildfire and related channel disturbances.
In central Idaho streams, temperatures after wildfires may increase following loss of shade from riparian vegetation, and
changes in channel structure that increase exposure to solar radiation and decreased hyporheic exchanges. To examine the
spatio-temporal aspects temperature in relation to these influences, we employed three approaches: a long-term pre-post fire
comparison of temperatures between a pair of streams, one burned and one unburned; a short-term pre-post fire comparison of
a burned and unburned stream with spatially extensive data; and a short-term comparative study of spatial variability in
temperatures using a space for time substitutive design. These three approaches provided key insights into the value of each
study approach and revealed some expected and some surprising associations between temperature and occurrence of native
trout and tailed frogs. The results of this work highlight the importance of spatio-temporal variability in study designs to
quantify the effects of wildfire and disturbance on stream temperatures, and the implications of stream temperature for
aquatic species in a broad landscape context.
DE: 0483 Riparian systems (0744, 1856)
DE: 1813 Eco-hydrology
DE: 1814 Energy budgets
DE: 1871 Surface water quality
SC: Hydrology [H]
MN: Fall Meeting 2005