About me

I’m interested in understanding the ecological and evolutionary processes that shape the natural world, and in determining the effect that global change is having on these processes. These days I’m particularly interested in exploring effects of temperature on rapid evolution and coexistence.

I’m currently a Banting and Biodiversity Postdoc at UBC, where I’m working with Sally Otto, Mary O’Connor and Rachel Germain to conduct experiments that test the effect of temperature on eco-evolutionary dynamics.


Before that I was a postdoc in Jonathan Levines group at Princeton, where I used field experiments with fruit flies to understand species’ rapid evolutionary responses to competition and climate.

During my PhD with Ben Gilbert at the University of Toronto, I used the insects that specialize on milkweed plants to look at the effects of climate change on species that live in patchy habitats. 

Check me out on , Google Scholar and ResearchGate.


September 2021 – Excited to attend the first meeting of an iDiv working group on Priority Effects led by Ben Delory and Tad Fukami!

August 2021 – Started up my big flour beetle experiment at UBC! Testing the effects of temperature on eco-evo dynamics! Stay tuned…

August 2021 – Presented my ongoing research on rapid evolutionary responses to global change and biotic interactions in the Early Career Award symposium at the Canadian Society of Ecology and Evolution Conference

June 2021 – Presented at the Evolution/ASN virtual conference in the Young Investigator Awards Symposium: “The Ecological and Evolutionary Interplay between Competition and Climate.” Talk should be posted online soon…

May 2021 – Grateful to be awarded a Canadian Society of Ecology and Evolution Early Career Award!

April 2021 – I received a Banting Postdoctoral Fellowship to work with Sally Otto, Mary O’Connor and Rachel Germain at UBC! Exciting eco-evo research to come…

March 2021 – Super honoured to receive a 2021 Jasper Loftus Hills Young Investigator Prize from the American Society of Naturalists!

February 2021 – New paper out in PNAS from my fruit fly work at Princeton: Competitive History Shapes Rapid Evolution in a Seasonal Climate

January 2021 – Finished up my postdoc at Princeton and started at UBC as a Biodiversity Postdoctoral Fellow!


Tess Grainger
Postdoctoral Fellow

University of British Columbia
Department of Zoology
6270 University Blvd
Vancouver, BC, Canada
V6T 1Z4

tessgrainger (at) gmail.com