Biogeochemical Cycles

This module examines the transfer and transformation of the key elements that are vital to life on planet Earth. Taking carbon as an example, we examine the budget and cycling of this element in the major surface compartments of air, water and soil, and how this links with the deeper, older compartment of the lithosphere. The impact of human activities that effectively ‘short-circuit’ the natural geochemical cycles is explored, along with the role of biota in shaping Earth systems.