people
I am interested in population ecology and the evolution of ecological interactions. I have spent much of my career thinking about diet breadth and host shifts in herbivorous insects, especially in Lycaeides butterflies. In recent years, more of my attention has gone to questions of global change and monitoring butterflies at long term study sites that we maintain in the Sierra Nevada Mountains
Current lab folks (alphabetically)
Cas Carroll (any pronouns), Ph.D. student
I graduated from the University of Maine with a B.S. in ecology and environmental science with a concentration in forest ecology in 2019. Through several research experiences and technician positions, I developed an interest in the relationships between insect populations, plants, habitat, and human land use, as well as the co-evolution of specialized Lepidopterans and their host plants, and using science to inform conservation efforts. My senior capstone, an applied conservation paleobiology project, and a technician position at an NGO solidified my interest in science in collaboration with conservation agencies. At UNR, I research the Carson wandering skipper, and ESA-listed, grass-feeding specialist, its host plant, and its habitat. This work allows me to merge my interests while also aiding in the conservation and management of an endangered insect.
Clare Dittemore (she/her), Ph.D. student
I received both my B.S. in agroecology and MS in entomology from Montana State University, where I had the opportunity to explore the ecology of a noctuid of both conservational and agricultural significance—the army cutworm. This experience solidified my interest in montane ecosystems, the use of science to inform policy, and Lepidoptera that straddle those two categories. Now, I am excited to help continue a long-term monitoring effort of butterflies at sites throughout the Sierra Nevada Mountains. In the context of this study system, I plan to look at how plant and butterfly communities have varied throughout our study sites over time, as well as how floral resources may be changing. I hope to untangle what specific mechanisms are driving population declines within these communities and whether (and how) we can mitigate these impacts.
Ericka Kay (she/her), Ph.D. student, co-advised with Drs. Richards and Dyer
I am interested in understanding how interactions among organisms are mediated by biological compounds. My dissertation experiments will provide insight into phytochemically-mediated mechanisms which have contributed to plant success over evolutionary time with a focus on synergistic effects. To examine such synergistic effects in an anti-herbivory context, I am examining industrial hemp which meets the standards of the NDA hemp program. I am combining observational and experimental studies to characterize effects of chemical variation on naturally occurring insect communities associated with hemp, and to examine specific hypotheses about effects of plant chemistry on insect physiology. My research includes field collections, rearing experiments with herbivores and parasitoids, cultivation of hemp under experimental treatments, development of an infrared spectral library to characterize phytochemical diversity, and extraction of compounds to conduct Lepidopteran feeding experiments.
Angie Lenard (she/they), postdoctoral reseacher
My research focuses on how environmental stress influences the ecology and evolution of organisms. I am particularly interested in global change biology and my work focuses on human-modified environments. For my doctoral work, I studied the ecology and evolution of cabbage white butterflies from urban populations. For my postdoctoral research, I am monitoring butterfly populations and examining how butterfly diversity relates to landscape pesticide contamination of host plants.
Alumni: graduate students and postdocs, chronologically
Taylor Bradford, Master's, 2022-2024
Kate Bell, postdoctoral researcher, 2021-2023
Chris Halsch, Ph.D., graduated Fall 2023
Eliza Grames, postdoctoral researcher, 2021-2023
Lydia Doan, Ph.D., graduated Summer 2023, co-advised with Dr. Lee Dyer
Su'ad Yoon, Ph.D., graduated Summer 2021, co-advised with Dr. Angela Smilanich
Anne Espeset, Ph.D., graduated Fall 2019
Heather Slinn, co-advised with Drs. Angela Smilanich and Lee Dyer, 2015-2018
Zachary Marion, postdoctoral researcher, 2017-2018
Josh Harrison, Ph.D. student, graduated Fall 2017
Josh Jahner, Ph.D. graduated August 2015, Email: jpjahner@msn.com
Kevin Burls, PhD, co-advised with Dr. Guy Hoelzer, graduated 2014
Joy Newton, Ph.D. student, 2011 - 2013
Joe Wilson, postdoctoral research associate, 2010 - 2012
Amy Lucas, Master's student, graduated 2012
Cynthia Scholl, Master's student, graduated 2012