Robert Hall is Professor of Limnology at Flathead Lake Biological Station, University of Montana, where he has worked since 2017.  Prior to that he was on the faculty at University of Wyoming where he started in 1998. Since graduate school at University of Georgia he has been interested in stream carbon cycling and food webs, but with a career trajectory of studying ever larger rivers. Current work links geomorphology to stream metabolism and nitrogen cycling, time-series analyses of river metabolism, food webs, isotope tracers, statistical modeling, and dissolved organic and inorganic carbon dynamics in rivers (and as of 2025, the ocean). Teaching includes a field based summer course on stream ecology taught on the Middle Fork Flathead, and graduate course on ecological modeling and data.