Priyanga                       Amarasekare

Priyanga Amarasekare


phone:  206-1366
office:  Botany Building 320

Recent Courses

EE BIOL 122 - Ecology
EE BIOL 194B - Research Group or Internship Seminars: Ecology and Evolutionary Biology
EE BIOL 200B - Ecology

Research Interests

My research focuses on how the interplay between abiotic environmental variation and biotic interactions influences ecological and evolutionary dynamics. It seeks to explain patterns of dynamics and diversity that are observed in nature, and to predict how such patterns may change under perturbations to the abiotic and biotic environment. A distinctive feature of my research is its mechanistic approach to elucidating how biotic and abiotic effects on the traits of organisms translate into population and community-level processes. It is also broad, spanning investigations of the interplay between biotic interactions and temporal variation on the one hand with temperature as the axis of abiotic variation, and biotic interactions and spatial variation on the other, with dispersal as a mechanism for sampling spatial heterogeneity. My approach is a combination of field observations, manipulative experiments and mathematical models.

Selected Publications

Kidd, D., and P. Amarasekare, "The role of transient dynamics in biological pest control: insights from a host-parasitoid community", Journal of Animal Ecology, 81 : 47-57 (2012) .

Bolnick, D., P. Amarasekare, M. Araujo, R. Burger, J. M. Levine, M. Novak, V.H.W. Rudolf, S.J. Schreiber, M. C. Urban and D. A. Vasseur, "Why intraspecific trait variation matters in community ecology", Trends in Ecology and Evolution, 1345 : 1-10 (2011) .

Vasseur, D., P. Amarasekare, V. Rudolf and J. Levine, "Eco-evolutionary dynamics enable coexistence via neighbor-dependent selection", The American Naturalist, 178 : 96-109 (2011) .

Amarasekare, P., "Productivity, dispersal and the coexistence of intraguild predators and prey", Journal of Theoretical Biology, 243 : 121-133 (2006) .

Amarasekare, P., M. Hoopes, N. Mouquet, and M. Holyoak, "Mechanisms of coexistence in competitive metacommunities", American Naturalist, 164 : 310-326 (2004) .

Amarasekare, P, "Spatial variation and density-dependent dispersal in competitive coexistence", Proceedings of the Royal Society of London, Series B 271 : 1497-1506 (2004) .

Amarasekare, P, "The role of density-dependent dispersal in source-sink dynamics", Journal of Theoretical Biology, 226 : 159-168 (2004) .

Amarasekare, P, "Spatial Dynamics of mutualistic interactions", Journal of Animal Ecology, 73 : 128-142 (2004) .

Amarasekare, P, "Competitive coexistence in spatially structured environments: a synthesis", Ecology Letters, 6 : 1109-1122 (2003) .

Amarasekare, P, "Diversity-stability relationships in multi-trophic systems: an empirical exploration", Journal of Animal Ecology, 72 : 713-724 (2003) .