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Principal Investigators

From left to right: Molly Cavaleri, Tana Wood and Sasha Reed
USDA Forest Service, International Institute of Tropical Forestry
Tana Wood is an ecosystem ecologist and biogeochemist with a particular interest in how climate and land-use change affects tropical forested ecosystems.  She is the primary on-site scientist for TRACE and primarily leads the below ground research effort.
U.S. Geological Survey
Sasha is a biogeochemist who loves exploring how elements like carbon, nitrogen, and phosphorus move around in terrestrial ecosystems. She helps the group assess and interpret plant and soil chemical characteristics so we can figure out the fundamental relationships between temperature, carbon cycling, and nutrients. 
Michigan Technological University
Molly Cavaleri is a forest ecophysiologist with expertise in tree canopy structure and function and the cycling of carbon and water through forests.  Within TRACE, she leads the effort to explore the effects of warming on tropical plant physiological processes like plant respiration and photosynthesis.
Project Manager
Megan Berberich
USDA Forest Service, International Institute of Tropical Forestry
Active: 2018 to present
Megan is responsible for managing the day-to-day research activities and coordinates with the Principal Investigators and other scientific collaborators to accomplish the challenging goals of the warming experiment. She is also responsible of maintaining our scientific equipment and ensuring high quality data. 
Project Coordinator
Iana Grullón-Penkova
USDA Forest Service, International Institute of Tropical Forestry
Active: 2018 to present
Iana works with the Project Manager to oversee the day-to-day operations of the project and is responsible for general project administration, management of volunteers and interns, social media, and educational outreach. She is also the primary liaison for communications regarding TRACE.
Plant PhysiologyTechnician
Nicole A. Gutiérrez-Ramos
USDA Forest Service, International Institute of Tropical Forestry
Active: 2019 to present
Nicole is responsible for collecting plant physiology data, specifically foliar photosynthesis and respiration as well as root respiration. She also assists the project manager with day-to-day maintenance of instruments and database administration.
General Technician
William F. Mejía-García
USDA Forest Service, International Institute of Tropical Forestry
Active: 2019 to present
William is responsible for routine sample collection, field measurements, site inspections; sample processing, and data organization.  He also assists the project manager with day-to-day equipment maintenance and database organization. 
Graduate Students
Kelsey Carter
Michigan Technological University - Houghton
Kelsey's research concentrates on studying the physiological acclimation potential of both mature canopy foliage and understory tree seedlings in response to experimental warming.
Daniela Yaffar
University of Puerto Rico - Río Piedras
Daniela's main interest is to study fine root distribution, productivity and turnover in normal conditions and in response to experimental warming.
Stephanie Roe
University of Virginia - Charlottesville
Stephanie’s research investigates climate responses in tropical forests and soil processes, and their aggregate effect on the Earth’s carbon cycle.
Robert Tunison
Michigan Technological University - Houghton
Rob’s research is focused on studying understory plant foliar and root physiological acclimation responses to disturbance under experimentally warmed conditions. 
Scientific Collaborators
Jennifer Pett-Ridge
Lawrence Livermore National Laboratory
Jennifer is interested in warming effects on microbial community composition and function.
Karis J. Mcfarlane
Lawrence Livermore National Laboratory
Karis is a forest soil scientist who studies carbon cycling in soils and ecosystems. She is an expert in the use of radiocarbon as an indicator of soil carbon longevity and the contribution of different sources of carbon to greenhouse gas fluxes. At TRACE, Karis is helping the team identify whether experimental warming increases the decomposition of soil organic matter and loss of soil carbon back to the atmosphere through soil respiration.
Tanya Hawley Matlaga, Patricia Burrowes, and Janelle Peña 
Susquehanna University, University of Puerto Rico-Río Piedras
Tanya, Patricia and Janelle are amphibian ecologists. They are interested in seeing how the common coquí frogs respond to climate warming. More specifically, they are investigating how frog growth, survival and movement differ in heated and treatment plots using mark-recapture methods.
Rice University
Bénédicte Bachelot is a tropical community ecologist interested in the processes promoting high tree diversity in the tropics. Béné has been collaborating on a seedling demography and herbivory study in the TRACE plots.
Los Alamos National Laboratory
Brent Newman is a hydrogeologist at Los Alamos National Lab. He installed macro-Rhizon samplers in the TRACE plots to monitor soil water chemistry and stable isotopes at three depths below ground.
Grizelle González
USDA Forest Service, International Institute of Tropical Forestry
Grizelle Gonzalez is the IITF Project Leader and an invaluable member of the team! Grizelle was particularly instrumental in facilitating the power upgrades and installation of infrastructure for the in situ field warming experiment in El Yunque National Forest. Grizelle's research is focused in macroarthropods and decomposition dynamics.
Research Assistants and Technicians
Robin Reibold
Armin Howell
Tropical Responses to
             Altered Climate
                          Experiment