Drivers of geomorphic heterogeneity in unconfined non‐perennial river corridors

River corridors along non-perennial stream networks are known to provide diverse physical and ecological functions that are thought to be related to geomorphic heterogeneity. Geomorphic heterogeneity refers to the spatial and temporal variability of geomorphic units, which are geomorphic patches within the river corridor formed by a given set of processes. While studies on the magnitude and drivers of geomorphic heterogeneity are emerging in perennial streams, similar studies in ephemeral streams are lacking. Given the ubiquity of non-perennial streams globally, we aim to answer questions regarding the magnitude and drivers of geomorphic heterogeneity in non-perennial river corridors as well as how geomorphic units and heterogeneity reflect processes related to flood disturbance. Geomorphic units were mapped in 30 unconfined river corridors within six non-perennial watersheds in Utah and Arizona, USA. Landscape heterogeneity metrics – Shannon’s Diversity Index, Shannon’s Evenness Index,..., ,