Hydraulic redistribution (HR) of water from moist to drier soils, through plant roots, occurs world‐wide in seasonally dry ecosystems. Although the influence of HR on landscape hydrology and plant water use has been amply demonstrated, HR's effects on microbe‐controlled processes sensitive to soil moisture, including carbon and nutrient cycling at ecosystem scales, remain difficult to observe in the field and have not been int...

We explore the potential role of atmospheric carbon dioxide (CO 2 ) on isoprene emissions using a global coupled land–atmosphere model [Community Atmospheric Model–Community Land Model (CAM–CLM)] for recent (year 2000, 365 ppm CO 2 ) and future (year 2100, 717 ppm CO 2 ) conditions. We incorporate an empirical model of observed isoprene emissions response to both ambient CO 2 concentrations in the long‐term growth environment...