Will Pockman installing Granier sap flux probes on large Juniperus ashei root in Cotterell Cave, Austin, Texas. The smaller, lighter-colored roots are Quercus sinuata.

Related posters: The contribution of deep root functioning to whole-plant water relations and xylem transport in Juniperus ashei
The contribution of deep roots to the water cycle: seasonal patterns of water uptake and hydraulic lift from below 7 m on the Edwards Plateau, Texas.

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