GoodStephenBiologicalEcologicalEngineeringHydrologicConnectivityConstrains(SupplementaryMaterials).pdf

Citeable URL: https://ir.library.oregonstate.edu/concern/articles/8336h386d

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Creator	Good, Stephen P. Noone, David Bowen, Gabriel
Abstract	Continental precipitation not routed to the oceans as runoff returns to the atmosphere as evapotranspiration. Partitioning this evapotranspiration flux into interception, transpiration, soil evaporation, and surface water evaporation is difficult using traditional hydrological methods yet critical for understanding the water cycle and linked ecological processes. We combined two large-scale flux-partitioning approaches to quantify evapotranspiration subcomponents and the hydrologic connectivity of bound, plant-available soil waters with more mobile surface waters. Globally, transpiration is 64±13% (mean ±1 s.d.) of evapotranspiration, and 65±26% of evaporation originates from soils and not surface waters. We estimate 38±28% of surface water is derived from the plant-accessed soil water pool. This limited connectivity between soil and surface waters fundamentally structures the physical and biogeochemical interactions of water transiting though catchments.
Rights Statement	Copyright Not Evaluated

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2017-07-26

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