Skip to main content
U.S. flag

An official website of the United States government

Ian Pearse, PhD

Ian is an ecologist who works on plants and insects.

Ian conducts research at the individual, population, community, and ecosystem level scales. His work focuses on plant-insect interactions and involves work on endangered insects such as bumble bees, strategies to map and control invasive plants, the chemical ecology and behaviors that affect herbivory, and the boom and bust seed production dynamics of many trees (i.e. mast seeding). His work informs management decisions made by the US Fish and Wildlife Service, National Parks, and a variety of other groups. Ian is especially fond of oak trees and spends a considerable amount of time staring up into them with the vague excuse of counting acorns, gall wasps, or rates of herbivory.

*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government