People in the Lab

Serita Frey

Ph.D., Colorado State University

Principal Investigator

UNH Faculty Profile
(603) 862-3880
114 James Hall, Durham, NH 03824

Serita Frey
Alix Contosta

Alix Contosta

Ph.D., University of New Hampshire

Research Scientist

Alix's Forest Ecosystems Page
NSRC Profile

Alix is interested in understanding how soils respond to natural disturbances and human activities, and how these responses impact both the roles that soils play in ecosystems and the services that soils provide to society. Her research investigates how climate change, acid deposition, land use, and agricultural management affect soil nutrient cycling, soil carbon sequestration, and greenhouse gas emissions.

Mel Knorr

M.S., Ohio State University

Supervisor Laboratory Researcher


Mel Knorr manages Serita’s soil microbiology lab, works closely with graduate students on their various projects and maintains several long-term experiments at the Harvard Forest LTER. Her specific interests involve exploring relationships among C and N cycling and microbial community composition as impacted by chronic warming and N deposition.

Mel Knorr
Kevin Geyer

Kevin Geyer

Ph.D., Virginia Polytechnic Institute and State University

Post-doctoral Researcher


Kevin is a postdoc studying the metabolism of organic matter by forest soil microorganisms. Knowing how and when microbes grow using the food they eat has important consequences for soil fertility and carbon dioxide emission to the atmosphere. Kevin is broadly interested in biogeochemistry and microbial ecology, particularly in the context of climate change effects.

Eric Morrison

M.S., University of New Hampshire

Ph.D. Student


Eric completed an M.S. degree in Microbiology in 2012 and continues to work in the Frey lab studying ecology and evolution of saprotrophic fungi. Eric is interested in understanding the properties of microbial communities that determine functional responses to global changes, and bioinformatics.

Eric Morrison
Mark Anthony

Mark Anthony

M.S., University of New Hampshire

Ph.D. Student


Mark Anthony researches microbial responses elicited by the introduction of non-native invasive species, emphasizing Alliaria petiolata; garlic mustard. Specifically, Mark is interested in the allelopathic defenses of A. petiolata and how allelochemicals may influence saprotrophic and mycorrhizal fungal community composition in addition to processes involved in organic matter/ nutrient transformations.

Emily Whalen

B.S., University of Vermont

M.S. Student


Emily is interested in understanding how long-term nitrogen deposition to soils affects decomposition dynamics and microbial community structure and function. She is particularly interested in the role that manganese plays in fungal decomposition of leaf litter.

Shana Whitney

Shana Whitney

Undergraduate Student

Lab Technician


Shana is working towards a B.S. in Environmental Conservation and Sustainability with a minor in Information Technology. In the Frey lab she performs molecular biology and soil biogeochemistry analyses for various projects.


Linda van Diepen, Post-doc; Assistant Professor, University of Wyoming

Rachel Thiet, Post-doc; Core Faculty, Antioch University—New England

Sarah Andrews, PhD; Lecturer, Great Bay Community College

Janice Gilbert, PhD; Wetland Ecologist, Ontario Ministry of Natural Resources

Liz Landis, MS; PhD Student, Tufts University

Katie Burnham, MS; US Parks Service, Yosemite National Park

Bill Errickson, MS

Lindsey O’Reilly, MS; Soil and Wetland Scientist, Gove Environmental Services

Eric Saas, MS; Ohio Environmental Protection Agency

Heather Smith, MS

Rodney Simpson, MS; Post-doc, Colorado State University

Tonia White, MS

Meghan Thornton, REU student; MS student, University of New Hampshire

Lisa Graichen, REU student;

Sarah Eisenlord, REU student; Lab Technician, University of Michigan

Ashley Fetterman, REU student; Microbiologist, NovoBiotic Pharmaceuticals

Alison Grantham, REU student; PhD student, Penn State University

Lindsey Scott, REU student; Sturgis Charter Public School, Hyannis, MA.

Chelsea Vario, REU student; PhD student, Dartmouth