Welcome to the Johnson Lab!


Principal Investigator

Dr. Pieter Johnson

Associate Professor in Ecology and Evolutionary Biology
Research Interests:

disease ecology, invasion biology, aquatic ecosystems



Lab Personnel

Carly Malavé

Research Technician
Research Interests:

Dana Calhoun ("Dain")

Laboratory Manager and Research Associate
Research Interests:

wildlife parasitology, physiological costs of infection, infectious disease ecology

Katie Leslie

Research Technician
Research Interests:

parasitology, fish biology, marine biology, behavioral ecology

Tawni Riepe

Research Technician
Research Interests:

bacteriology, molecular biology, virology, fish pathology


Graduate Students

Research Interests:

community ecology, invasive species, parasites of invertebrates

Wynne Moss

PhD student
Research Interests:

community ecology, predator-prey-parasite interactions, conservation, toxoplasmosis


Undergraduate Researchers

Research Interests:

marine biology, symbiotic relationships between various organisms, neural development and neuroimmunology

Research Interests:

zoonotic infections, Giardia infection dynamics in humans and other animals

Research Interests:

freshwater ecology, conservation biology, restoration projects

Research Interests:

ecology, evolution, animal physiology

Research Interests:

tropical community ecology, marine biology, herpetology, environmental education

Research Interests:

disease ecology, parasite life cycles, invasive species

Research Interests:

wildlife biology, parasitology, animal behavior

Research Interests:

alpine lakes, zooplankton community dynamics, invasive species, climate change

Research Interests:

wildlife ecology, animal husbandry


Lab Alumni

Name Role Current Position
Dr. Chelsea Wood Postdoctoral Researcher Assistant Professor, University of Washington
Keegan McCaffrey Honors Student Centers for Disease Control and Prevention
Dr. Sarah Haas Postdoctoral Researcher Research Specialist, Texas Parks and Wildlife Department
Dr. Jason Hoverman Postdoctoral Researcher Assistant Professor, Purdue University
Dr. Sarah Orlofske PhD Student Assistant Professor, Northeastern Illinois University
Dr. Sara Paull Postdoctoral Researcher Postdoctoral Researcher, University Corporation for Atmospheric Research
Meg Summerside Honors Student
Ian Buller Masters Student PhD Student, Emory University
Dr. Joe Mihaljevic PhD Student Postdoctoral Researcher, University of Chicago
Dr. Katie Richgels PhD Student Research Scientist, National Wildlife Health Center
Dr. John Mischler PhD Student Assistant Professor, Kings College
Dr. Dan Preston PhD Student Postdoctoral Researcher, Oregon State University
Emily Hannon Honors Student
Dr. Max Joseph PhD Student Analyst, Earth Lab Analytics Hub
Dr. Will Stutz Postdoctoral Researcher