This is a detailed protocol for constructing and operating a pressure-drop hydraulics flow meter that can be used for stem hydraulics, as described here, and with minimal changes, can be used for leaf hydraulics (evaporative flux method, or rehydration methods). University of California, Los Angeles Overview Lawren Sack, Megan Bartlett, Chris Creese, Gaëlle Guyot, Christine Scoffoni Author affiliations
