Callie R. Chappell

Welcome to the website of

Callie Rodgers Chappell


Hello world,

Who am I?

I am a Ph.D. student at Stanford University's Department of Biology. I study the chemical and molecular mechanisms that shape the development of communities, especially in yeast communities in floral nectar. In addition to scientific research, I am also engaged in STEM education, fine art, graphic design, and policy debate. 

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2017-2021 - Ph.D. Stanford University, Biology (Ecology & Evolution)

Advisor: Dr. Tadashi Fukami, Department of Biology

2016-2017 - M.Sc. University of Michigan, Molecular Cellular, & Developmental Biology

Advisor: Dr. David Sherman, Department of Medicinal Chemistry, Department of Chemistry, Department of Microbiology & Immunology

2013-2016 - B.Sc. University of Michigan, Biology

Advisor: Dr. Mark Hunter, Department of Ecology & Evolutionary Biology


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Asclepias Syriaca

Image Source: Roundstone Native Seed Company

Aphis Nerii

Image Source: Andrew C, Wikimedia Commons

C. Anna (Anna's Hummingbird)

Image Source: California State University

M. Aurantiacus (Sticky Monkeyflower)

Image Source: California State University
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As a researcher, I am interested in understanding how invisible factors -- chemicals, microbes, and immigration -- shape community structure and function. Currently, I am a PhD student in the Fukami Lab (Ecology & Evolutionary Biology) at Stanford University, investigating priority effects in a nectar microbe system.



During my PhD, I am interested in investigating the influence of immigration on the end states of natural communities. Specifically, I am using a nectar microbe system to investigate the mechanisms yeasts use to exert priority effects in a floral nectar environment. During my undergraduate research, I investigated the role of global change (elevated carbon dioxide) on the chemical ecology and population dynamics of insect herbivores. 


In every ecosystem, there is an invisible web of chemicals that mediate interactions between individuals. I use analytical chemistry (LC-MS, HPLC/UPLC, NMR) to identify and isolate these chemical compounds in order to learn how they influence interactions between individuals (e.g. plant/herbivore or plant/pollinator interactions), populations, communities, and ecosystems.



Molecular biology provides a helpful set of tools and approaches with which to investigate the mechanisms that may drive changes in community composition. Using two approaches, gene cloning and population genetics, I am interested in investigating how genes influence community structure and function. 

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Art & Design



As an artist, I traverse the boundaries between art, science, and social justice. I am especially interested in using art as a means of political, social change. 

Charcoal on graphite
Archival ink on watercolor
Digital art
Graphic Design
Tobias' Cat , Digital Print (Procreate, iPad Pro 2017) 

Tobias' Cat, Digital Print (Procreate, iPad Pro 2017) 

This video describes the importance of vector graphics using Adobe Illustrator CC. This video is targeted at scientists who want to learn how to use Illustrator and was a part of longer infographics workshop by Stanford University student group STAR (Science Teaching Through Art) in January of 2018.
We are the war.
— Susanne Kappeler
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As a scientist and citizen, contributing to my community is extremely important to me. I want to create change, both on a community and institutional level, and I have pursued service opportunities in social justice, education, and policy/law to accomplish this goal. 

Social Justice

I have pursued social justice initiatives as a primary coordinator of an outreach program (D-RISE) that provided high school students in Detroit with synthetic and analytical chemistry research projects, the driving force behind a program that connected undergraduate women in the sciences to female mentors in STEM, and as founder and president of a student organization for the philosophy of science (the {POSIT} Society) at the University of Michigan. 


I have taught at the university level and designed innovative biology curriculums for introductory and advanced undergraduate courses at the University of Michigan. At the elementary and middle school levels, I have taught innovation summer camps through Galileo (Chicago, IL) and have taught limnology aboard a large educational Schooner with Inland Seas Education Association (Suttons Bay, MI). 

Policy & Law

I have collaborated with local governments to draft legislation limiting hydraulic fracturing (fracking) with an environmental policy think tank (FLOW) and volunteered with the Huron River Watershed Council to work on citizen science initiatives and local fishing regulations. As a former debater, I run Go, Fight, Win!, an educational organization providing a free policy debate curriculum to schools in need.