Dr Cate Macinnis-Ng

BSc (Hons I) PhD (UTS)

Senior Lecturer

In: Biological Sciences » Faculty of Science

Biography

I am interested in plant responses to climatic conditions and right now, I'm particularly enthused about drought in New Zealand's native forests. I completed my undergraduate and PhD degrees in Sydney and then worked as a research fellow on several projects until mid 2010 when I moved to Auckland with my family. I had various roles in the School of Environment before joining the School of Biological Sciences as Lecturer in Ecology in February 2015. At the end of 2015, I was awarded a Rutherford Discovery Fellowship by the Royal Society of New Zealand. My research interests are centred around understanding plant functional responses to environmental conditions. I have used measurement and modelling approaches to investigate the hourly, daily, seasonal and annual patterns in tree water use at leaf and stand scales. From January 2018, I will be a Principle Investigator in Te Pūnaha Matatini.

Research | Current

Current projects

Drought impacts on native vegetation

I was awarded a Marsden Fast-Start grant in November 2012 to study drought impacts on native trees of New Zealand. I am using measurement and modelling approaches to assess the threat of drought to kauri (Agathis australis) and associated species.

In September 2015, I was awarded a Rutherford Discovery Fellowship to develop this research further with the first forest throughfall exclusion experiment in New Zealand. This involves setting up drought plots in the field to simulate drought and measuring tree responses to dry soil conditions.

Carbon fluxes in native forests

I also recently completed a two year research fellowship funded by the Faculty Research Development Fund to quantify carbon cycling in kauri forests. The sampling period captured the wet summer of 2012 and the very dry summer of 2013 so the impact of water availability on the major fluxes of carbon is now being assessed. I am collaborating with Luitgard Schwendenmann on this project.

Some media coverage

Read steady learn, bFM on recent research findings 18th August 2016

Good Magazine piece on kauri ecosystem services

Kauri as a 'climate change canary', NZ Herald article on species influenced by climate change

Marsden Fund IAQ Blog celebrating 20 years of Marsden research.

How will kauri survive drought? One News video segment.

Giant kauri trees and climate change. Our Changing World podcast.

Teaching | Current

BIOSCI 394 Conservation Ecology

BIOSCI 205 Plant, Cell and Environment

Postgraduate supervision

Students and interns interested in plants and climate change can contact me for further information on available projects.

Current students

PhD

Julia Kaplick Tree-climate interactions in kauri forest

Ben Cranston Drought impacts on kauri forest

Sarah Killick Interactive effects of drought and dieback on kauri (co-supervised with George Perry, School of Environment)

Breanna Powers Ecosystem services and land-use and cover change modelling in multi-functional landscapes (co-supervised with George Perry, School of Environment)

Daniel dela Torre Crop forecasting an modelling using remote sensing under different climate scenarios (co-supervised with Jay Gao, School of Environment)

Niger Sultana Fire and drought interactions (Co-supervised with Tiim Curran, Lincoln University)

Sridevi Ravi The role of nonstructural carbohydrates in drought and salinity tolerance of mangroves (co-supervised with Sebastian Leuzinger, AUT)

MSc

Tynan Burkhardt Nocturnal transpiration in NZ native plants

Kshama Awasthi Using remote sensing to detect drought impacts in native forests

Distinctions/Honours

President, New Zealand Ecological Society, 2018

Vice President, New Zealand Ecological Society, 2017

New Zealand Society of Plant Biologists Roger Slack Award, 2016

Rutherford Discovery Fellow, 2015

Early Career Research Excellence Award, Univeristy of Auckland, 2014

Responsibilities

Principal Investigator, Te Pūnaha Matatini

Associate Editor, Journal of Applied Ecology

Associate Editor, American Journal of Botany

Associate Editor, Hydrological Processes

Areas of expertise

Climate-vegetation interactions change as the climate changes. I am a plant ecophysiologist and ecohydrologist specialising in water and carbon fluxes of trees and other vegetation.

Selected publications and creative works (Research Outputs)

Hartmann, H., Schuldt, B., Sanders, T. G. M., Macinnis-Ng, C., Boehmer, H. J., Allen, C. D., ... Medlyn, B. E. (2018). Monitoring global tree mortality patterns and trends. Report from the VW symposium 'Crossing scales and disciplines to identify global trends of tree mortality as indicators of forest health'. The New phytologist, 217 (3), 984-987. 10.1111/nph.14988
O'Brien MJ, Engelbrecht, B. M. J., Joswig, J., Pereyra, G., Schuldt, B., Jansen, S., ... Preisler, Y. (2017). A synthesis of tree functional traits related to drought-induced mortality in forests across climatic zones. Journal of Applied Ecology10.1111/1365-2664.12874
Lorrey, A. M., Brookman, T. H., Evans, M. N., Fauchereau, N. C., Macinnis-Ng, C., Barbour, M. M., ... Horton, T. W. (2016). Stable oxygen isotope signatures of early season wood in New Zealand kauri (Agathis australis) tree rings: Prospects for palaeoclimate reconstruction. Dendrochronologia, 40, 50-63. 10.1016/j.dendro.2016.03.012
URL: http://hdl.handle.net/2292/31380
Other University of Auckland co-authors: Anthony Fowler
Schwendenmann, L., & Macinnis-Ng, C. (2016). Soil CO2 efflux in an old-growth southern conifer forest (Agathis australis) – magnitude, components and controls. SOIL, 2 (3), 403-419. 10.5194/soil-2-403-2016
URL: http://hdl.handle.net/2292/30578
Other University of Auckland co-authors: Luitgard Schwendenmann
Macinnis-Ng, C. M. O., Zeppel, M. J. B., Palmer, A. R., & Eamus, D. (2016). Seasonal variations in tree water use and physiology correlate with soil salinity and soil water content in remnant woodlands on saline soils. Journal of Arid Environments, 129, 102-110. 10.1016/j.jaridenv.2016.02.011
URL: http://hdl.handle.net/2292/31381
Macinnis-Ng, C., Wyse, S., Veale, A., Schwendenmann, L., & Clearwater, M. (2016). Sap flow of the southern conifer, Agathis australis during wet and dry summers. Trees: Structure and Function, 30 (1), 19-33. 10.1007/s00468-015-1164-9
URL: http://hdl.handle.net/2292/32748
Other University of Auckland co-authors: Luitgard Schwendenmann
Stanley, M. C., Beggs, J. R., Bassett, I. E., Burns, B. R., Dirks, K. N., Jones, D. N., ... Souter-Brown, G. (2015). Emerging threats in urban ecosystems: A horizon scanning exercise. Frontiers in Ecology and the Environment, 13 (10), 553-560. 10.1890/150229
URL: http://hdl.handle.net/2292/29656
Other University of Auckland co-authors: Bruce Burns, Margaret Stanley, Jacqueline Beggs, Kim Dirks, Sam Trowsdale
Lin, Y.-S., Medlyn, B. E., Duursma, R. A., Prentice, I. C., Wang, H., Baig, S., ... Ellsworth, D. S. (2015). Optimal stomatal behaviour around the world. Nature Climate Change, 5 (5), 459-464. 10.1038/NCLIMATE2550