Toward an Improved Understanding of the Role of Transpiration in Critical Zone Dynamics. An improved understanding
of how tree transpiration varies across the critical zone (CZ) will help to elucidate how the vertical water flux modulates the soil
moisture balance which in turn influences the subsurface biogeochemical and landscape evolution process across the CZ. Within
subalpine mixed conifer ecosystems in the Jemez River Basin (JRB) and Santa Catalina Mountains (SCM) multiple sets of sap
flux sensors are proposed or have been established. We will be synthesizing these data to address critical zone questions.