AGU’s Biogeosciences section encompasses interactions between biological, geological, hydrologic and atmospheric systems that govern diverse functions of the Earth system (and other planetary systems). These functions include cycles of carbon, nutrients, and other elements, feedbacks within the climate system, the origins and impacts of early life, and interactions across physical, biological, and human interfaces.

The Biogeosciences section, due to the inherently interdisciplinary nature of the subjects it represents, also serves as a nexus for other AGU sections including Hydrology, Atmospheric Sciences, Earth and Planetary Surface Processes, Global Environmental Change, Ocean Sciences, and GeoHealth. Thus a key goal of the section is to encourage and foster co-sponsored sessions that will encourage interdisciplinary communication and collaboration.