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.
Professional Experience
2016 Postdoctoral work, University of California, Davis
2014-2015 Postdoctoral work, Illinois Natural History Survey
2012-2013 Postdoctoral work, Cornell University
Education and Certifications
PhD Entomology, University of California, Davis, 2011
BS Plant Biology, University of Illinois, Urbana-Champaign 2004
Affiliations and Memberships*
International Oak Society
Ecological Society of America
Entomological Society of America
Science and Products
Data on how Lepidium draba responds to damage of clones Data on how Lepidium draba responds to damage of clones
Data on grasshopper composition in the Thunder Basin National Grassland, Wyoming, USA Data on grasshopper composition in the Thunder Basin National Grassland, Wyoming, USA
Data for a lab study of the effects of diet variability on the interactions between a Lepidopteran herbivore and its parasitoid Data for a lab study of the effects of diet variability on the interactions between a Lepidopteran herbivore and its parasitoid
Greenhouse observations of plant herbivore interactions on Lepidium draba to test effects of ontogenic variability Greenhouse observations of plant herbivore interactions on Lepidium draba to test effects of ontogenic variability
Californian crop pests, pesticide applications, and phylogenetic information of crops Californian crop pests, pesticide applications, and phylogenetic information of crops
Data on the impacts of garlic mustard from a weeding experiment in Pennsylvania 2006-2016 Data on the impacts of garlic mustard from a weeding experiment in Pennsylvania 2006-2016
First records distribution models to guide biosurveillance for non-native species First records distribution models to guide biosurveillance for non-native species
Co-mast: Harmonized seed production data for woody plants across US long-term research sites Co-mast: Harmonized seed production data for woody plants across US long-term research sites
Predicted occurrence and abundance habitat suitability of invasive plants in the contiguous United States: Updates for the INHABIT web tool. Predicted occurrence and abundance habitat suitability of invasive plants in the contiguous United States: Updates for the INHABIT web tool.
Defining the pathobiomes associated with drippy blight in Colorado and drippy nut in California Defining the pathobiomes associated with drippy blight in Colorado and drippy nut in California
Phenology forecasting models for detection and management of invasive annual grasses Phenology forecasting models for detection and management of invasive annual grasses
Naturalized species drive functional trait shifts in plant communities Naturalized species drive functional trait shifts in plant communities
Non-USGS Publications**
http://onlinelibrary.wiley.com/doi/10.1111/nph.14114/full
http://onlinelibrary.wiley.com/doi/10.1111/1365-2745.12554/pdf
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0152537
http://onlinelibrary.wiley.com/doi/10.1890/14-0297.1/ful
http://onlinelibrary.wiley.com/doi/10.1890/15-0342.1/full
http://link.springer.com/article/10.1007/s10531-010-9956-0
http://www.pnas.org/content/106/43/18097.short
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3040.2005.01307.x/full
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Data on how Lepidium draba responds to damage of clones Data on how Lepidium draba responds to damage of clones
Data on grasshopper composition in the Thunder Basin National Grassland, Wyoming, USA Data on grasshopper composition in the Thunder Basin National Grassland, Wyoming, USA
Data for a lab study of the effects of diet variability on the interactions between a Lepidopteran herbivore and its parasitoid Data for a lab study of the effects of diet variability on the interactions between a Lepidopteran herbivore and its parasitoid
Greenhouse observations of plant herbivore interactions on Lepidium draba to test effects of ontogenic variability Greenhouse observations of plant herbivore interactions on Lepidium draba to test effects of ontogenic variability
Californian crop pests, pesticide applications, and phylogenetic information of crops Californian crop pests, pesticide applications, and phylogenetic information of crops
Data on the impacts of garlic mustard from a weeding experiment in Pennsylvania 2006-2016 Data on the impacts of garlic mustard from a weeding experiment in Pennsylvania 2006-2016
First records distribution models to guide biosurveillance for non-native species First records distribution models to guide biosurveillance for non-native species
Co-mast: Harmonized seed production data for woody plants across US long-term research sites Co-mast: Harmonized seed production data for woody plants across US long-term research sites
Predicted occurrence and abundance habitat suitability of invasive plants in the contiguous United States: Updates for the INHABIT web tool. Predicted occurrence and abundance habitat suitability of invasive plants in the contiguous United States: Updates for the INHABIT web tool.
Defining the pathobiomes associated with drippy blight in Colorado and drippy nut in California Defining the pathobiomes associated with drippy blight in Colorado and drippy nut in California
Phenology forecasting models for detection and management of invasive annual grasses Phenology forecasting models for detection and management of invasive annual grasses
Naturalized species drive functional trait shifts in plant communities Naturalized species drive functional trait shifts in plant communities
Non-USGS Publications**
http://onlinelibrary.wiley.com/doi/10.1111/nph.14114/full
http://onlinelibrary.wiley.com/doi/10.1111/1365-2745.12554/pdf
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0152537
http://onlinelibrary.wiley.com/doi/10.1890/14-0297.1/ful
http://onlinelibrary.wiley.com/doi/10.1890/15-0342.1/full
http://link.springer.com/article/10.1007/s10531-010-9956-0
http://www.pnas.org/content/106/43/18097.short
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3040.2005.01307.x/full
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
*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