Rebecca Irwin
Associate Professor

Among my research interests are the relative importance of direct and indirect effects of antagonists on the ecology and evolution of plant-pollinator mutualisms, and whether plant interactions with mutualists and antagonists simultaneously shape and constrain selection on nectar traits. Email:

Robert Schaeffer
Ph.D. Student

My research investigates the role of floral nectar-inhabiting microbes as potential mediators of plant-pollinator interactions. Website, email:
Zak Gezon
Ph.D. Student

The focus of my research is on how climate change could affect plant reproduction and plant-pollinator interactions by altering flowering phenology. I conduct my field work in the Rocky Mountains of Colorado at the Rocky Mountain Biological Lab.  Email:,  Dance Your PhD

Leif Richardson
Ph.D. Student

I am broadly interested in the interactions between plants and their mutualists, such as pollinators, and antagonists, such as herbivores. In particular, I seek to understand how plants might mediate these relationships with chemistry, and how this affects behavior of pollinating bees as well as the parasites and parasitoids of those bees. In addition to this work, I have several projects revolving around the distributions and conservation status of bumble bees, many of which have declined greatly in the last 20 years. Website, email:

Christine Urbanowicz
Ph.D. Student

I conduct research in multi-species interactions and landscape ecology. I am particularly interested in the differential responses of interacting species to environmental change and how this influences the distributions of these species.  Right now I am exploring plant-pollinator interactions in the changing Arctic. Website, email:

Gabby Pardee
Ph.D. Student

I am a first year PhD student and am currently preparing for my first field season at the Rocky Mountain Biological Laboratory in Colorado. My research at RMBL will examine the effects of global climate change on pollinators. Website, email:


Jonathan Andicoechea
Lab Technician

I recently graduated with an M.S. from the University of Indiana, Bloomington, and am currently helping out with several projects in the lab. I am broadly interested in how gender dimorphism in plants mediates plant-insect interactions. More specifically, gender dimorphism in plants may trigger an evolutionary tug-of-war between the different gender morphs if their shared genetic architecture conflicts with insect-mediated, sex-specific selection. Email:


Past Lab Members

Adrian Carper

Ph.D., 2013. Current position: Postdoctoral Research Associate, Dept. of Entomology, University of Wisconsin-Madison,

Laura Burkle
Susan Elliott


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