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Watershed geomorphology and snowmelt control stream thermal sensitivity to air temperature.

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Publication Date
2015-05-14
Time span for which resource(publication) is relevant. Interagency Agreement between USGS Cooperative Research Unit at U.WA and FWS for the W.AK. LCC
2011-05-25
Time span for which resource(publication) is relevant. Interagency Agreement between USGS Cooperative Research Unit at U.WA and FWS for the W.AK. LCC
2014-12-31

Citation

LCC Network Data Steward(Point of Contact), Western Alaska Landscape Conservation Cooperative(administrator), Joel Reynolds(Cooperator/Partner), Patrick Walsh(Cooperator/Partner), Daniel Schindler(Principal Investigator), Peter Lisi(Co-Investigator), Western Alaska Landscape Conservation Cooperative(sponsor), 2015-05-14(Publication), Watershed geomorphology and snowmelt control stream thermal sensitivity to air temperature., http://westernalaskalcc.org/products/8408e6b2-4831-4751-bb29-61d19bc80322, https://www.sciencebase.gov/catalog/item/5a0aec62e4b09af898cb62cd

Summary

How local geomorphic and hydrologic features mediate the sensitivity of stream thermal regimesto variation in climatic conditions remains a critical uncertainty in understanding aquatic ecosystem responsesto climate change.We used stable isotopes of hydrogen and oxygen to estimate contributions of snow and rainfallto 80 boreal streams and show that differences in snow contribution are controlled by watershed topography.Time series analysis of streamthermal regimes revealed that streams in rain-dominated, low-elevation watershedswere 5–8 times more sensitive to variation in summer air temperature compared to streams draining steepertopography whose flows were dominated by snowmelt. This effect wasmore pronounced across the landscape [...]

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“Watershed geomorphology and snowmelt control stream thermal sensitivity to air..”
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urn:uuid urn:uuid 8408e6b2-4831-4751-bb29-61d19bc80322

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languageeng

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