Los Amigos Biological Station, Peru
Photo by Ishaan Raghunandan
About
I am a quantitative ecologist whose research bridges forest dynamics, mammal ecology, and data science. My expertise spans multiple areas of ecology, including forest structure measurement, primate behavior, and mammal diversity. I have also led projects on leech ecology and greenhouse gas emissions inventories.
Across these projects, I apply data-driven and modeling-based approaches to uncover ecological patterns and processes. I am particularly interested in leveraging quantitative methods and clear, creative data visualization to communicate complex relationships in meaningful and accessible ways.
Research
(click on the photo circles to learn more)
LiDAR and Forest Structure
Utilized terrestrial laser scanning to measure forest structure variation at Gunung Palung National Park, Indonesia.
Terrestriality Across the Primate Order
Used Bayesian modeling to determine the ecological factors that influence ground use in primates.
Detroit River Greenhouse Gas Emissions Inventory
Created an interactive web map displaying emissions data in the Detroit River Corridor.
Terrestrial Leech Ecology
Determined sympatric leech species distributions and usefulness as proxies for mammals.
Tamarin Spatial Ecology
Used GPS data to investigate group ranging and intergroup conflict between two tamarin species at the Los Amigos Biological Station in Peru.
CV highlights
Education
SPRING 2025
Ph.D., Biological Anthropology
University of Michigan
Ann Arbor, MI, USA
SUMMER 2010
B.A., with Honors, Psychology
Portland State University
Portland, OR, USA
Teaching Experience
LEAD INSTRUCTOR
Spring 2022 - Introduction to Data Science for the Social Sciences (ANTHRBIO 297)
GRADUATE STUDENT INSTRUCTOR
Winter 2021 - How Humans Evolved (ANTHRBIO 201)
Winter 2020 - Primate Evolutionary Ecology (EEB 362)
Fall 2019 - Primate Behavior (PSYCH 335)
Winter 2019 - Intro to Biological Anthropology
(ANTHRBIO 201)
Fall 2018 - Human Growth and Development Across the Lifespan (ANTHRBIO 462)
Grants Awarded
EXTERNAL
2023 - Am. Soc. of Primatologists Small Grant $1,500
2023 - Sigma Xi Grants in Aid of Research $1,000
2022 - NSF - DDRIG $24,918
2022 - The Leakey Foundation Research Grant $10,519
2022 - Am. Phil. Society Lewis and Clark Grant $5,000
UNIVERSITY OF MICHIGAN
2023 - Evolution & Human Adaptation Award $1,000
2023 - Rackham International Research Award $5,000
2022 - Rackham Student Research Grant $3,000
2021 - Rackham International Research Award $7,000
2021 - ICPSR Diversity Fellowship $2,500
2020 - Rackham Professional Dev. Grant $400
2019 - Rackham Student Research Grant $1,500
2019 - Anthro. Dept. Summer Research Grant $4,000
2018 - Rackham Merit Fellows Research Grant $10,000
Honors & Awards
2023 - Research University Alliance, Research Exchange - Molecular Ecology and Evolution Lab w/ Dr. Anthony Di Fiore, University of Texas, Austin
2023 - Rackham Doctoral Intern. Fellowship - w/ Dr. Cheryl Knott, Boston University
2020 - Outstanding Graduate Student Instructor Award
2020 - Rackham Humanities Research Fellowship
2017 - Rackham Merit Fellowship
2009 - Ronald E. McNair Post-Bac Achievement Program
Publications
Estrada, G.R. and Marshall, A.J. (2024). Terrestriality across the primate order: A review and analysis of ground use in primates. Evolutionary Anthropology: Issues, News, and Reviews, e22032
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Nelaballi, S., Finkel, B., Bernard, A.B., Estrada, G.R., … Marshall, A.J. (2022). Impacts of abiotic and biotic factors on terrestrial leeches in Indonesian Borneo. Biotropica , 54(5), 1238-1247.​