Journal Highlights

Latitudinal Gradients in Tree-Ring Stable Carbon and Oxygen Isotopes Reveal Differential Climate Influences of the North American Monsoon System

Editors’ Highlight—

This study uses the stable isotopes of carbon and oxygen in tree rings of pine trees across a geographic gradient in the southwestern US that spans the range of summer precipitation inputs to assess the importance of monsoonal inputs as an ecophsyiological resource. This research furthers our geographic understanding of the ecophysiological relationship between seasonal tree growth in Ponderosa pine and precipitation regimes of the arid southwestern United States and it adds to the literature on Monsoon variability and importance for forested ecosystems, as well as the use of stable isotope dendroclimatology for seasonal climate reconstruction.