Ecosystem Nutrient Cycling
The essential and limiting nutrients such as N, P and the base cations control many aspects of how ecosystems function. Many of these cycles and particularly N (and perhaps P) have been drastically altered by human activity. Our work in nutrient cycling focuses on understanding how these element cycles influence biological systems and how they are controlled by environmental and physical factors.

Biosphere / Atmosphere Exchange of Nutrients

Changes in the Atmospheric Cycling and Deposition of Nutrients

Nitrogen Inputs and Cycling in Ecosystems of the Western Cape Province of South Africa