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    Author(s): Vincent J. Pacific; Brian L. McGlynn; Diego A. Riveros-Iregui; Howard E. Epstein; Daniel L. Welsch
    Date: 2009
    Source: Water Resources Research. 45: W07201.
    Publication Series: Scientific Journal (JRNL)
    Station: Rocky Mountain Research Station
    PDF: Download Publication  (430.74 KB)


    Soil respiration is tightly coupled to the hydrologic cycle (i.e., snowmelt and precipitation timing and magnitude). We examined riparian and hillslope soil respiration across a wet (2005) and a dry (2006) growing season in a subalpine catchment. When comparing the riparian zones, cumulative CO2 efflux was 33% higher, and peak efflux occurred 17 days earlier during the dry growing season. In contrast, cumulative efflux in the hillslopes was 8% lower, and peak efflux occurred 10 days earlier during the drier growing season. Our results demonstrate that soil respiration was more sensitive to drier growing season conditions in wet (riparian) landscape positions.

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    Pacific, Vincent J.; McGlynn, Brian L.; Riveros-Iregui, Diego A.; Epstein, Howard E.; Welsch, Daniel L. 2009. Differential soil respiration responses to changing hydrologic regimes. Water Resources Research. 45: W07201.


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    soil respiration, hydrologic cycle, hillslopes, riparian zones

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