Breadcrumbs

Associate Professor David Campbell

Ecosystem carbon exchange and wetland ecohydrology

Qualifications: BSc (Hons) PhD Otago

Personal Website: http://waiber.com

My research contributes to the understanding of how ecosystems function, especially the way they exchange water, energy, carbon, and greenhouse gases with their atmospheric environment. I have predominantly worked within two groups of ecosystems: N.Z.’s globally distinctive peat wetlands; and our intensively managed agricultural systems.

Current areas of research focus are the sustainability of the carbon sink function of NZ peat wetlands and identifying land-use practices that might mitigate the large CO2 losses from our peatlands that have been drained for agriculture.

Research Interests

My research contributes to the understanding of how ecosystems function, especially the way they exchange water, energy, carbon, and greenhouse gases with their atmospheric environment. I have predominantly worked within two groups of ecosystems: N.Z.’s globally distinctive peat wetlands; and our intensively managed agricultural systems. In the 1990’s I was an early adopter of micrometeorological methods for investigating the water and energy balances, then CO2 and CH4 exchanges, of wetlands. With colleagues, I then applied these methodologies to investigate whole-farm carbon balances as a way of understanding the impact of the intensive management of grazed farming systems on soil carbon stocks. We now use these approaches to study ecosystem-scale greenhouse gas exchanges while still focussing on the sensitivity of ecosystems (whether natural or managed) to disturbance regimes, climate extremes (e.g. drought), and environmental change.

Recent Publications

  • Ratcliffe, J. L., Campbell, D. I., Clarkson, B. R., Wall, A. M., & Schipper, L. A. (2019). Water table fluctuations control CO<inf>2</inf> exchange in wet and dry bogs through different mechanisms. Science of the Total Environment, 655, 1037-1046. doi:10.1016/j.scitotenv.2018.11.151

  • Pronger, J., Campbell, D. I., Clearwater, M. J., Mudge, P. L., Rutledge, S., Wall, A. M., & Schipper, L. A. (2019). Toward optimisation of water use efficiency in dryland pastures using carbon isotope discrimination as a tool to select plant species mixtures. Science of the Total Environment, 665, 698-708. doi:10.1016/j.scitotenv.2019.02.014

  • Wall, A. M., Campbell, D. I., Mudge, P. L., Rutledge, S., & Schipper, L. A. (2019). Carbon budget of an intensively grazed temperate grassland with large quantities of imported supplemental feed. Agriculture, Ecosystems and Environment, 281, 1-15. doi:10.1016/j.agee.2019.04.019

  • Liang, L. L., Campbell, D. I., Wall, A. M., & Schipper, L. A. (2018). Nitrous oxide fluxes determined by continuous eddy covariance measurements from intensively grazed pastures: Temporal patterns and environmental controls. Agriculture, Ecosystems and Environment, 268, 171-180. doi:10.1016/j.agee.2018.09.010

Find more research publications by David Campbell

Contact Details

Email: davec@waikato.ac.nz
Room: FG.3.02
Phone: +64 7 858 5189