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Environ Manage. 1999 Jul;24(1):77-83.

A Simple Model for Estimating Mean Monthly Stream Temperatures After Riparian Canopy Removal.

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Streamside Environmental Services, Box 2645, Smithers, British Columbia, Canada V0J 2N0


/ The removal of riparian vegetation along small streams affects the thermal regime of the stream and consequently the biota within it. A simple regression model for mean monthly temperature after riparian canopy removal, based on conditions prior to removal, is presented. The model is determined to have an accuracy of +/-2 degrees C 95% of the time over the temperature range 0.7-17 degrees C. The regression also predicts a switching point at 3 degrees C, below which postharvesting temperatures are colder than prior to harvest. The ability to predict postharvest stream temperatures based on preharvest air temperatures is also evaluated. Management implications of thermal effects due to riparian removal are discussed.KEY WORDS: Stream temperature; Temperature model; Prediction; Air temperature; Thermal change; Riparian canopy removal

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