Professor Steven Johnson’s research focuses on pollination biology, evolution, plant speciation, insect-plant relationships, invasive species, chemical ecology and floral mimicry. He currently holds the DST-NRF SARChI chair in Evolutionary Biology and is an associate editor of Proceedings of the Royal Society B and Biological Journal of the Linnean Society.
The ecology of plant-pollinator interactions.
Formation of pollination ecotypes.
Pollinator-driven speciation in plants.
Plant breeding systems and ecological determinants of fruit and seed set.
Floral mimicry in orchids and milkweeds.
Coevolution of flowers and insects.
Interpretation of trait evolution using phylogenetic analysis.
Convergent evolution in plants with specialized pollination systems.
Chemical ecology of pollination systems.
Breakdown of plant-insect mutualisms in degraded landscapes.
Reproductive systems of invasive plants.
To be added