Our Researchers

The Ecological Stoichiometry Cooperative is comprised of many talented researchers with a diverse range of skills, experience, and research interests.

STOICH Project Investigators

Jessica Corman

Assistant Professor, University of Nebraska-Lincoln

Jessica is the principal investigator on the STOICH project. She studies nature through the lens of chemistry. She combines techniques from biogeochemistry and ecosystem ecology to understand processes that influence elemental flows into and through ecosystems particular vulnerable to nutrient pollution: lakes and streams.

Learn more: ecostoich.weebly.com

Hal Halvorson

Assistant Professor, University of Central Arkansas

Hal is a co-principal investigator on the STOICH project. He studies ecological stoichiometry of aquatic food webs and is particularly fascinated by how shifts of resource stoichiometry due to environmental change can affect consumers and ecosystem functions. Hal is assisting the database formation and the development of teaching curricula from the project.

Contact Hal: hhalvorson@uca.edu

Learn more: halvorhalvorson.com

Amy Krist

Associate Professor, University of Wyoming

Amy is a co-principal investigator on the STOICH project. Amy and her lab use a stoichiometric perspective to address topics ranging from the biology of invasive species and parasite-host interactions to the ecology of alpine lakes and the consequences of organismal policy level. Amy is excited to contribute to mentoring, developing teaching curricula and pursuing research questions examining relationships among phylogenetic, functional, and stoichiometric diversity in aquatic animals.

Learn more: uwyo.edu/krist

Eric Moody

Assistant Professor, Middlebury College

Eric is a co-principal investigator on the STOICH project. His research is focused on linking organismal trait variation to nutrient storage and fluxes in organisms to ecosystems. His work is primarily focused on animals that inhabit extreme aquatic systems.

Learn more: erickmoody.wordpress.com

Catherine Wagner

Assistant Professor, University of Wyoming

Katie is a co-principal investigator on the STOICH project. Her lab uses genetic and ecological data to study the evolution of biodiversity. She and her lab are interested in better understanding the evolution of stoichiometric traits and their influence on community assembly processes. As part of the STOICH project, they will research how stoichiometric environments exert selective pressures on species that influence the evolution of their stoichiometric traits. Additionally they will examine situations where stoichiometric environments exert environmental filters that influence community assembly in animal communities. 

Learn more: cewagnerlab.com

STOICH Project Collaborators

Katie Anania

Assistant Professor, University of Nebraska-Lincoln

Katie Anania is an art historian and a Special Personnel member on the STOICH project. She specializes in modern and contemporary art of the Americas, with a focus on ephemeral and transitory materials like drawings, letters, tents, packaging, and food. Her research and teaching merge queer and feminist theory with the environmental humanities. Katie will contribute a program to STOICH called Art, Data, and Environment/s (ADEs), which will create new methods for graphic communication related to ecological stoichiometry.

Learn more: katieanania.com

Sarah Collins

Assistant Professor, University of Wyoming

Sarah is an ecosystem ecologist. Sarah studies food webs and biogeochemistry in lakes and streams. Some of her ongoing projects involve database synthesis and statistical model development, and she is excited to apply these tools to ecological stoichiometry and the STOICH database. Sarah plans to pursue research questions from the STOICH project’s first two research aims – biogeochemistry and food web ecology.

Learn more: sarahmcollins.weebly.com

Molly Costanza-Robinson

Professor, Middlebury College

Molly is a senior collaborator on the STOICH project and an environmental chemist. Molly studies environmental contaminant fate and transport broadly defined. Recent projects focus on lead in drinking water in Vermont schools and the impact of state-wide lead testing and remediation policies. Molly is excited to apply her environmental analytical chemistry expertise to development of the new STOICH database.

Contact Molly: mcostanz@middlebury.edu

Yawen Guan

Assistant Professor, University of Nebraska-Lincoln

Yawen’s research interests are spatial and spatiotemporal statistics, computer model emulation and calibration, Baye​sian hierarchical modeling, and climate and environmental applications.  She will contribute to student advising and the development of methods and tools for analyzing stoichiometric data.

Contact Yawen: yawen.guan@unl.edu

Learn more: yawenguan.github.io

Erin Larson

Assistant Professor, Alaska Pacific University

Erin joined the STOICH project in Fall 2021. Erin studies diversity and disturbance in stream ecosystems and is also interested in science communication and community engagement. She and her lab will be working on understanding how urbanization in stream watersheds affects basal resource and consumer stoichiometry for the STOICH Project.

Contact Erin: elarson@alaskapacific.edu

Elizabeth Pierce

Associate Professor and Department Chair of Information Science, University of Arkansas at Little Rock

For over 25 years, Elizabeth Pierce has been involved with building and leading informatics programs at the undergraduate and graduate levels. Her research interests focus on how to integrate and govern systematic data collection with data analysis for generating understanding and insight.  For the STOICH project, Dr. Pierce is providing a consultant role to provide guidance as needed in building a quality and robust data repository. 

Learn more: linkedin.com/in/elizabeth-mary-pierce

Steve Thomas

Professor, University of Nebraska-Lincoln

Steve is a stream ecologist with the School of Natural Resources at the University of Nebraska-Lincoln. He is interested in understanding how the properties of one location impact the ecological properties of another. The flow of water links upstream and downstream habitats, and longitudinal connection is a fundamental, though often ignored, aspect of ecology. His research combines ecology and hydrology to address nutrients in streams, microbiological activity, and organic matter production, transport and processing.

Learn more: streamecology.org