Directory Profiles

Dr. Jens Roland


Jens Roland is Emeritus Professor in the Department of Biological Sciences, University of Alberta. He has studied the ecology and dynamics of alpine butterfly populations in the Canadian Rocky Mountains for over 40 years. Butterflies offer insight into the effects of extreme environments on small populations. Research in his lab has examined the effects of changing climate and of shrinking alpine meadow habitat (due to rising treeline) on alpine butterfly dispersal and population dynamics. He also examines the ability of alpine butterflies to adapt to a changing world under the impacts of climate and climate change.

Selected Publications

Connectivity rescues genetic diversity after a demographic bottleneck in a butterfly population network
Jangjoo M, SF Matter, J Roland & N Keyghobadi
Proceedings of the National Academy of Sciences of the United States of America 113:10914–10919 (Sep 2016)

Pivotal effect of early-winter temperatures and snowfall on population growth of alpine Parnassius smintheus butterflies
Roland J & SF Matter
Ecological Monographs doi:10.1002/ecm.1225 (early view 2016)

Predicting the effects of forest encroachment for Sedum lanceolatum and Rhodiola integrifolia at a subalpine ecotone
van Ee J, M Westbrook, S Yadav, J Roland & SF Matter
Alpine Botany 125:125–135 (Oct 2015)

Landscape structure and the genetic effects of a population collapse
Caplins SA, KJ Gilbert, C Ciotir, J Roland, SF Matter & N Keyghobadi
Proceedings of the Royal Society B 281:20141798 (Oct 2014)

Insect parasitoid species respond to forest structure at different spatial scales
Roland J & PD Taylor
Nature 386:710–713 (Apr 1997)