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The influence of shade and clouds on soil water potential: The buffered behavior of hydraulic lift

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Williams, Kimberlyn, Caldwell, Martyn M, and Richards, James H, The influence of shade and clouds on soil water potential: The buffered behavior of hydraulic lift: .

Summary

In the sagebrush/bunchgrass steppe of the North American Great Basin soil water potential has been shown to exhibit diel fluctuations with water potential increasing during the night as a result of water loss from roots in relatively dry soil layers. We hypothesized that environmental conditions promoting low transpiration rates (shading, cloudiness) would cause a net increase in soil water potential as a result of reduced soil water depletion during the day and continuing water efflux from roots during the night. We examined the response of soil water potential to artificial shading in sagebrush/bunchgrass plantings and used a simple model to predict how soil water potential should respond to reduced transpiration. Field measurements [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS Export <br> On - Wed Sep 19 08:08:31 MDT 2012

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Title Citation The influence of shade and clouds on soil water potential: The buffered behavior of hydraulic lift

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