Qualifications & Memberships
My research focuses on three related themes in plant physiological ecology:
1. The physiology of plant performance under field conditions – my research addresses the internal and external constraints on plant resource acquisition (e.g. carbon and nitrogen) in response to variation in environment. This is a fundamental theme in plant biology, with links to a range of important applications in plant production and environmental science.
2. The physiology of forest carbon exchange – the application of the first theme has had its most obvious manifestation in forest carbon exchange. This is essential research because carbon exchange in the world’s terrestrial ecosystems has such a strong influence on the global atmosphere. This research has focussed on factors regulating photosynthesis and respiration in leaves and the scaling of these processes to the canopy level. This is a theme with significant current interest given the importance of forest productivity to human goods and services.
3. Global change biology – my research in the two preceding areas has directly informed my current research which attempts to address the responses of photosynthesis and respiration to changing temperatures on calculations of forest carbon budgets. This theme has developed a global resonance in recent years which I would not have predicted when I first developed the interest!
- Samarth., Lee R., Kelly D., Turnbull MH., Macknight RC., Poole AM. and Jameson PE. (2021) Molecular control of the floral transition in the mast seeding plant Celmisia lyallii (Asteraceae). Molecular Ecology 30(8): 1846-1863. http://dx.doi.org/10.1111/mec.15859.
- Zhu L., Bloomfield KJ., Asao S., Tjoelker MG., Egerton JJG., Hayes L., Weerasinghe LK., Creek D., Griffin KL. and Hurry V. (2021) Acclimation of leaf respiration temperature responses across thermally contrasting biomes. New Phytologist 229(3): 1312-1325. http://dx.doi.org/10.1111/nph.16929.
- Samarth., Kelly D., Turnbull MH. and Jameson PE. (2020) Molecular control of masting: An introduction to an epigenetic summer memory. Annals of Botany 125(6): 851-858. http://dx.doi.org/10.1093/AOB/MCAA004.
- Gallart M., Love J., Meason DF., Coker G., Clinton PW., Xue J., Jameson PE., Klápště J. and Turnbull MH. (2019) Field-scale variability in site conditions explain phenotypic plasticity in response to nitrogen source in Pinus radiata D. Don. Plant and Soil 443(1-2): 353-368. http://dx.doi.org/10.1007/s11104-019-04237-0.
- Hu Q., Turnbull M. and Hawes I. (2019) Estimated light compensation depth explains growth of Stuckenia pectinata in Te Waihora. Aquatic Botany 156: 57-64. http://dx.doi.org/10.1016/j.aquabot.2019.04.005.