Dr Nicola Stevens

Associate Professor in Physical Geography (Biodiversity and Climate Change)

Academic Profile

Nicola is Associate Professor in Physical Geography (Biodiversity and Climate Change). My current research interests are centred around understanding the dynamics of African grassy ecosystems and how they are changing in the Anthropocene. I'm especially interested in understanding how altered fire and herbivory regimes against a backdrop of changing CO2 concentrations are driving changes. Along this vein I have become particularly interested in the phenomenon of woody encroachment where open ecosystems across the tropics are being invaded by native woody species. It has also driven me to improve our ability to predict future species ranges under global change by improving our mechanistic understanding of range edges in disturbance limited systems. I have ongoing projects in Southern and East Africa.

Teaching and Supervision

Current Graduate Research Students

Kerry-Anne Grey Functional response of savanna ecosystems to climate extremes

Selected Publications

For a full publications list, please see Google Scholar

Bond, W. and Stevens, N. (2026) in Routledge Handbook of Grasslands. Taylor & Francis, pp. 215–231.
2400224 - Switching states
Hyslop, C., Venter, Z. and Stevens, N. (2026) Journal of Environmental Planning and Management, ahead-of-print(ahead-of-print), pp. 1–28.
2387129 - Comparing the benefits of native and novel ecosyst...
Telford, E. et al. (2026) Global Change Biology, 32(2), p. e70707.
2369296 - The Ecology of Encroachment: Identifying the Speci...
Matthies, B. et al. (2026) Journal of Animal Ecology [Preprint].
2366682 - Mammalian herbivory indirectly shapes savanna arth...
Clements, H. et al. (2025) Nature, 649(8095), pp. 113–121.
2344969 - A place-based assessment of biodiversity intactnes...
Loft, T. et al. (2025) Nature, 649(8095), pp. 104–112.
2308648 - Energy flows reveal declining ecosystem functions ...
Skhosana, F. et al. (2025) People and Nature [Preprint].
2296134 - The impacts of woody encroachment on nature's cont...
Knowles, T. et al. (2025) Nature Sustainability, 8(3), pp. 226–233.
2077470 - Viability and desirability of financing conservati...
Mochi, L. et al. (2024) Journal of Vegetation Science: Advances in plant community ecology, 35(4).
2026732 - Grass layer limits tree seedling survival but not ...
Gopalakrishna, T. et al. (2024) Communications Earth & Environment, 5(1).
2018604 - The distribution and drivers of tree cover in sava...
Dr Nicola Stevens
Environmental Change Institute