The Rollinson Lab 

Evolutionary ecology, maternal effects, herpetology, conservation

Research themes
I have a broad interest in evolutionary ecology, working primarily on reptiles, amphibians, and fishes. My group uses field experiments, long-term monitoring, and metadata to understand a variety of topics, including the evolution of life histories, parental care, maternal effects, body-size evolution, parent-offspring conflict, phenotypic plasticity, the evolution of determinate and indeterminate growth, temperature-dependent sex determination, and phenotypic responses to climate change. I am also particularly interested in the challenges faced by ectotherms inhabiting northern environments.

Research locales

Much of our field-based research at the moment occurs in Algonquin Park, where we study the evolutionary ecology of reptiles and amphibians near their northern range limit. We are currently collaborating with Dr. Jackie Litzgus to maintain the Algonquin Park long-term turtle study, which was founded by Dr. Ron Brooks in 1972. Students are also working on the long-term study of spotted salamanders in Algonquin, a project that is independently supported and organized by Patrick Moldowan.  Laboratory-based research focuses on life-history evolution in Daphnia, using clones from environments across Europe that were provided by Dieter Ebert. Finally, we're well equipped to perform meta-analyses and analyses of long-term individual based data, as we have access to/have compiled several life-history databases on ectotherms and endotherms.

Lake Sasajewun Research Site, Algonquin (photo source)

Dr. Njal Rollinson

Assistant Professor

Ecology and Evolutionary Biology

& The School of the Environment

University of Toronto


email: njal.rollinson{circle}utoronto.ca

phone: 416-529-7726

Spotted Salamander (Bat Lake, Algonquin)
Credit: Patrick Moldowan