Expressing stemflow commensurate with its ecohydrological importance

Despite some progress, the importance of stemflow remains obscured partly due to computations emphasizing canopy interception loss. We advocate for two metrics—the stand-scale funneling ratio and the stand-scale infiltration funneling ratio—to more accurately portray stemflow inputs and increase com...

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Bibliographic Details
Published in:Advances in water resources 2018-11, Vol.121, p.472-479
Main Authors: Carlyle-Moses, Darryl E., Iida, Shin'ichi, Germer, Sonja, Llorens, Pilar, Michalzik, Beate, Nanko, Kazuki, Tischer, Alexander, Levia, Delphis F.
Format: Article
Language:English
Subjects:
Dipterocarp forest
Ecohydrology
Ecosystems
Forest hydrology
Forests
Funneling ratio
Hot spot
Hydrology
Infiltration
Interactions
Interception
Interception loss
Lodgepole pine
Plant cover
Precipitation
Scale (ratio)
Soil
Stemflow
Stream flow
Throughfall
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Summary:Despite some progress, the importance of stemflow remains obscured partly due to computations emphasizing canopy interception loss. We advocate for two metrics—the stand-scale funneling ratio and the stand-scale infiltration funneling ratio—to more accurately portray stemflow inputs and increase comparability across ecosystems. These metrics yield per unit area stemflow inputs orders of magnitude greater than what would have been delivered by throughfall or precipitation alone. We recommend that future studies employ these stand-scale funnelling metrics to express stemflow commensurate with its ecohydrological importance and better conceptualize the role of stemflow in plant-soil interactions, permitting advances in critical zone science.
ISSN:0309-1708
1872-9657
DOI:10.1016/j.advwatres.2018.08.015