Project Director

Haldre Rogers, Iowa State University. I became interested in the impacts of bird loss on forest and human communities after I moved to Guam in 2002 to work on the Brown Treesnake Project. In Guam, my job was to develop and coordinate the United States Geological Survey's Brown Treesnake Rapid Response Team. This position included frequent trips to the Northern Mariana Islands of Saipan, Tinian and Rota to determine whether the snake had spread to these locations. Through conversations with local citizens and countless hours performing night searches for snakes on Guam and these other islands, I was struck by the differences between the forests on Guam and on islands with birds. Guam's forests were silent due to the loss of birds and they appeared to support much higher densities of spiders, butterflies, and praying mantids in comparison to Tinian, Saipan and Rota. I wondered what other, perhaps more subtle changes were happening in the forest and decided to go to graduate school to pursue this line of research. The EBL project began as my PhD project while at the University of Washington, and has expanded from there. Currently, I am an Assistant Professor at Iowa State University. When not in the jungle of the Marianas or on a plane somewhere over the Pacific, I can be found playing frisbee, mountain biking, adventure racing, trail running, or eating chocolate.


Ross Miller, University of Guam.  I am a professor of Entomology at the University of Guam, where my laboratory assists in the Ecology of Bird Loss Project, particularly with insects of the Marianas. I'm originally from Fort Collins, Colorado. I received my Ph.D from Washington State University's Department of Entomology, MS in Biology from the University of Houston, and BS in Zoology from Brigham Young University.

Amy Dunham, Rice University. I am  an assistant professor in the Ecology and Evolutionary Biology department at Rice University.  My research focuses on behavioral, population, and community ecology and is often applied to conservation issues in tropical rainforests.

Joshua J. Tewksbury, Future Earth - Colorado Hub. I am a conservation biologist and an evolutionary ecologist. Much of my work focuses on the importance of interactions between species (fungus and plants, animals and plants, animals and fungus), and the conservation value of these interactions. I use this interest to probe questions ranging from the roots of spices to the
impacts of climate change and the future of food security. On the EBL Project, my interests are in the importance of direct and indirect mutualisms in natural systems, and the consequences that we face when these interactions are lost from ecosystems.

Janneke Hille Ris Lambers, University of Washington. 
My research touches on two fundamental questions in community ecology: 1) how do so many plant species, all competing for the same handful of limiting resources, coexist? and 2) how will global change (climate change, invasive species, nitrogen deposition, etc) alter the structure and function of plant communities? I approach questions of interest with observational studies, manipulative experiments, and statistical modeling, and have worked in a variety of habitats (North Carolina, Minnesota, California, Washington).

EBL Postdoctoral Researchers

Evan Fricke, Iowa State University.  My interests are in community ecology, evolutionary ecology, and conservation. My work combines field experiments and quantitative models to understand the maintenance of biological diversity and predict species responses to global change. I tackle these interests through the lens of seed dispersal by studying the nature of the seed dispersal mutualism, its influence on species coexistence, and the consequences of its disruption. The long-term goals of my work are to provide empirical and conceptual advances that inform effective conservation of ecological interactions and ecosystem processes.

Hugo Thierry, Iowa State University. I received my PhD in Toulouse, France, studying the spatial temporal dynamics of the interactions between agricultural practices and pest population dynamics. My work consists in developing spatially explicit models to study population dynamics, ecosystem services and conservation biology. In this project, my goal is to develop management scenarios that effectively restore seed dispersal to the island of Guam.

Ryszard Oleksy, Iowa State University. I received my PhD in the UK working on movement pattern and seed dispersal by large fruit bats in Madagascar

EBL Graduate Students

Ann Marie Gawel, PhD Student, Iowa State University. I am planning to study novel ecosystems and conservation in the Mariana Islands. Part of my PhD thesis focuses on seed dispersal in non-native vertebrates in a system that has lost its native vertebrates (the island of Guam). I am also addressing social science questions in my thesis, focused on how public perceptions and misperceptions affect conservation goals. I have a BA from the University of Chicago and MSc from the University of Guam. I joined the EBL team in August 2016 after working for four years as a regulatory biologist for the U.S. Fish and Wildlife Service. Outside of my research, I enjoy hiking, outrigger-canoe-paddling, and raising a ruckus for social justice.

Marianas-based EBL Field Crew

Morgan Franke, Field Crew Leader. I recently started working for EBL after finishing my MS at Virginia Tech in Invasive Plant Ecology. My research interests include seed dispersal, plant-animal interactions, impacts of invasive species, disturbance, and restoration. I also get excited by lively scientific discussions, creating an inclusive research community, hitting the beach after long field days, snorkeling, and make-your-own pizza parties!

Zia Crytser, Biologist. I am an undergraduate at University of Guam. Growing up on Guam, I spent many hours outside enjoying nature. Not much has changed, except now I have a deep yearning to give back to nature for all that nature has provided to me. I am very excited for this opportunity to work with EBL to learn more about the relationship between plants and animals, and the effect of vertebrates on the ecosystem. During my free time you can catch me hiking or scuba diving.  

Benita Laird-Hopkins, Biologist. I’m a tropical ecologist and have worked on a number of different ecological systems in both the neotropics and in Asia. I have a background in soil ecology, ecosystem ecology and entomology. My primary interest is community ecology, researching how organisms interact in their environment. I love being outside, so when I’m not clambering through jungle for work I’ll be hiking, biking or running in whatever nature I can get my hands on!

Natalie Myers, Biologist. I just graduated from Occidental College with a BA in Biology with a concentration on Environmental Science. I'm originally from near Seattle, Washington and in my free time I like to draw, hike and read. I love animals, and in the past have studied a variety of things, but hope to study evolutionary biology and herpetology in the future! I'm excited to get to explore Guam and the Mariana Islands, and to learn more about the plant communities of the Mariana Islands.
Erin Fitz, Biologist. I recently graduated from the University of British Columbia with a degree in Natural Resource Conservation. I am interested in landscape ecology and understanding the role humans play within the ecosystem. I am looking forward to gaining a greater understanding of tropical ecology on the islands. I continuously seek new ways to explore the world around me-namely through travel, hiking, rock climbing, drawing, and painting.

Iowa-based EBL Members

McKayla Spencer, Lab Manager, Iowa State University. My interest have historically been in reptile ecology, behavior, and conservation. After finishing my BS with University of Florida I was a member of the Brown Treesnake Research Team in Guam from 2013-2014. I left Guam with a strong interest in pursuing research concerning invasive species impacts on native communities. After finishing my MS at Austin Peay State University (with a focus on animal physiology and behavior) I am excited to further my knowledge in community ecology with the EBL team. I enjoy organizing chaos along with going out and doing fieldwork. I can often be found searching out the best herping, bugging, and hiking spots on my free time.

Forest Educators

We have supported twelve teachers through the National Science Foundation Research Experience for Teachers program. These teachers worked with the field crew during the summer and developed curriculum for use during the school year, including a Chamoru-language local plant resource for educators (, developed by Daniel Pangelinan). Check out a summary of the EBL lesson plans here:

Current educators
  • MoƱeka de Oro, Guam
  • Mack James, Rota

Previous educators
  • Daniel Pangelinan- Simon Sanchez High School, Guam
  • Roque Indalecio- Hopwood Junior High, Saipan
  • Ben Seman- Hopwood Jr. High School, Saipan
  • Greg Ecle- Southern High School, Guam
  • Dan Ho- Southern High School, Guam (currently in grad school)
  • Valerie Atalig- Rota Jr/Sr High School, Rota (currently teaching elementary school on Guam)
  • Annette Pladavega-Kagman High School, Saipan (currently CNMI Science Curriculum Coordinator)
  • Mary Garvilles- Simon Sanchez High School, Guam
  • Sabina Perez-  Simon Sanchez High School, Guam
  • Michael Subbert- Guam High School, Guam (now retired)

Former EBL Members

Courtenay Ray, Lab Manager (2009-2010, 2016-2017), Currently a PhD student at Arizona State University.
Tony Castro, Technician (2013-2017), Currently a field biologist.
Meg Kargul, Intern (2017-2018), Currently interviewing with graduate school programs.
Andrea Colton, Intern (2017-2018), Internship at Petrified Forest National Park in Arizona.
Matt Benjamin (2017), Intern.

Glorya Chlupsa, Technician (2016-2017). Currently an undergraduate at the University of Guam.
Allyson Earl, Intern, Currently working for the Hawaii Vine Project.
Joma Santos, Technician. Currently an undergraduate at the University of Guam. 
Christa Shen, Intern. 
Renata Diaz, Intern. Currently a graduate student at University of Florida. 
James Lucas, Intern. Currently a graduate student at Washington University in St. Louis.
John Bender, Avian Research Biologist. Currently a biologist at the Lincoln Park Zoo, Chicago. 
Amanda Santos, Field technician. Currently a biologist with CNMI DFW. 
Kloe Borja, STEP-UP intern. Currently an undergraduate at Hollins College. 
Erin McCann, Field Crew Leader. 
Miranda Salsbery, Undergraduate researcher. Currently a graduate student at University of Nebraska. 
Brittany Clark, Undergraduate researcher. Currently a grad student at University of Georgia.


Elizabeth Wandrag, Postdoctoral Researcher. Currently a Postdoc with Dr. Richard Duncan at University of Canberra, Australia. 
Nadya Muchoney. Field technician. Currently a PhD student at University of Nevada, Reno.
Timothy Harvey-Samuel. Field technician. Currently a Postdoc with Prof. Luke Alphey at The Pirbright Institute, UK
Marlyn Naputi, REU. 
Macy Ricketts, REU. Currently a graduate student at University of Wyoming. 
Evgenia Dubman, Research Coordinator. 
Stephen Johnson, Intern. 
Britney Zell, Intern. 


Veronica Kuhn- Senior Thesis Student, Rice University. Currently a graduate student at Virginia Tech.
Jeff Brown- Senior Thesis Student, Rice University. Currently a graduate student at Rutgers University.
Alexandra Kerr - LSAMP researcher.
Allison Schaich - Rice University REU student
Stephen Pillman - University of Guam REU student

Jasmin Silva- REU. Currently employed by Rice University
Alexandra Kerr- REU. Currently an urban farmer in NYC!
Micah Freedman- Intern. Currently a graduate student at UC Davis.
Kyle Ngiratregd- Field technician. Currently a biologist. 
Kelsey Wooddell- Undergrad research volunteer, Rice University. Currently in graduate school.

Chris Roy- completed his MS at Rice University, currently an environmental consultant.
Monika Egerer- currently a graduate student at UC Santa Cruz.
Tor Shimizu - University of Washington

Rachel Volsteadt, Field Technician, currently works for USDA Wildlife Services on Brown Treesnake Control.
Megan Volsteadt, Field Technician, currently a graduate student at the University of Guam
Otton Mendiola, Field Technician, currently a farmer and fisherman on Rota.
Kaitlin Mattos, REU 2009 and Crew Leader 2010-2011; currently a graduate student at University of Colorado at Boulder
Isaac Chellman, Crew Leader 2010-2011, currently a Biologist in Yosemite/King's Canyon
Maggie Chan, Intern 2011, currently a graduate student at University of Alaska- Fairbanks
Jonnie Dunne, Intern 2011, currently a graduate student at University of Washington
Ethan Linck, REU 2011, currently a graduate student at University of Washington

Eric Cook, Plant Propagation Specialist 2008-2010
Shahla Farzan, Intern 2010; currently a reporter for NPR. 
Amber Goguen, Intern 2010; currently a graduate student at Michigan State University
Summer Kemp-Jennings, REU 2010, currently a graduate student at University of Washington
Eleanor Caves, REU 2010; currently a graduate student at Duke University

Bridget Bradshaw, Volunteer 2009; currently a roving field biologist
Courtenay Ray, Intern 2009; 
Eliza Hooshiar, Crew Leader 2009-2010
Emily Schultz, Intern 2009-2010; currently a graduate student with Tom Miller at Rice University
Jenny Howard, Intern 2009-2010; currently a graduate student at Wake Forest University
Julie Duay, Field Technician 2009-2010; completed her MS at Univ of Guam; currently an environmental consultant
Maia Raymundo, Field Technician; completed her MS at Univ of Guam. Currently a PhD student in Australia.
Cat Adams, REU 2009; currently a PhD student at UC-Berkeley
Anthony Ritter
Kaylyn Knaeble
Teresa Hecita
Leanne Obra, Field Technician 2009.
Mitch Piper, Intern 2009; currently an electrician. 

Nash Turley, Field Technician 2008-2009; finished his PhD at University of Toronto, now a Post-Doc at Florida State University.
Theresa Feeley-Summerl, Field Assistant 2008.

Tara Kenny, Field Assistant 2007; currently an emergency room physician.