Associate Professor David Campbell
Associate Professor (Earth Sciences)
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. 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.
- Ratcliffe, Joshua (in progress). Carbon sequestration and biogeochemical cycling in damaged and pristine peatlands.
- Goodrich, Jordan (2015). Magnitude and controls on the net carbon balance of a New Zealand bog.
- Kalaugher, Electra (2015). Adaptation of New Zealand dairy farms to climate change: An integrated, farm-level analysis.
- Rutledge-Jonker, Susanna (2010). Carbon dioxide losses from terrestrial organic matter resulting from photodegradation and microbial respiration.
- Keyte Beattie, Alexandra (2014). The role of Empodisma robustum litter in CO2 exchange at Kopuatai bog.
- Sturgeon, Catherine (2013). Assessing dissolved organic carbon export from Kopuatai bog, New Zealand.
- Blyth, James (2011). Ecohydrological characterisation of Whangamarino wetland.
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
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
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
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
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