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Researchers Who Teach

Our Faculty

The center directors, faculty, and researchers who make field-based education happen every day across 12 countries.

Across 12 Centers

Researchers in the Field

Our faculty spans 12 research centers on six continents. Each center is led by a Center Director or Program Manager who lives and works in the region, supported by researchers running active fieldwork in ecology, conservation, and environmental policy.

On the Ground

Center Directors

Each SFS center is led by a Center Director or Program Manager who serves as part of a residential team of faculty and staff delivering an interdisciplinary, hands-on learning experience.

David Tng, PhD
Center Director, Australia; Lecturer in Environmental Sustainability and Socioeconomic Values
PhD, Biological Sciences, University of Tasmania

A Singaporean ecologist who moved to North Queensland to study how giant Eucalyptus trees, fire, and tropical rainforests battle for territory at rainforest-savanna boundaries. His post-doctoral work at James Cook University examined drought impacts on tropical rainforests at Cape Tribulation, and a visiting professorship in Brazil added ethnobotanical fieldwork to a research portfolio that spans vegetation science, plant anatomy, and citizen science.

Explore Australia Center
Nawang Norbu, PhD
Center Director, Bhutan
PhD, Natural Sciences, University of Konstanz

Founder of the Bhutan Ecological Society and architect of Bhutan's RNR Strategy 2030, Nawang works at the intersection of national policy and conservation science. He drafted pathways to transform Bhutan's food systems in collaboration with the Royal Government and the FAO, operating at a scale where research directly shapes how an entire country manages its natural resources.

Explore Bhutan Center
Rothsophal Nguon, M.S.
Center Director, Cambodia
MS, Ecological Economics, Mälardalen University

A PhD candidate in ASEAN Studies whose research examines low-skill migrant workers, Rothsophal also brings a decade of teaching gender studies, human rights, and business communication to undergraduates. Her earlier work on female entrepreneurship and sustainable tourism in Cambodia and Thailand reflects her conviction that conservation progress requires social equity, a lens she now brings to SFS's programming in Southeast Asia.

Explore Cambodia Center
Paola Goich
Center Director, Chile
Tourism, Los Lagos University Temuco

Born in Punta Arenas at the edge of the continent, Paola spent seven years as a mountain guide in Torres del Paine National Park, learning the terrain by horseback before designing 20-day field programs connecting students to Patagonian ecology and horse culture. Her background in tourism and translation makes her a bridge between students and the landscapes of southern Chile.

Explore Chile Center
Gerardo Avalos, PhD
Center Director, Costa Rica
PhD, Tropical Ecology, Univ. of Missouri–St. Louis

A Full Professor at the University of Costa Rica who began his canopy research as a Smithsonian fellow in Panama, using a construction crane to study liana physiology. His current work spans palm biomechanics and carbon sequestration, invasive plant ecology, and tri-trophic network dynamics between hummingbirds, flower mites, and their host plants, including a collaboration with the Hiroshima Green Legacy Foundation studying Trees of Peace.

Explore Costa Rica Center
Peter Mackelworth, PhD
Center Director, Croatia
PhD, Geography, University College London

Conservation Director at Croatia's Blue World Institute since 2000, Peter's PhD at University College London focused on how countries that share a sea can also share responsibility for protecting it. He authored Marine Transboundary Conservation and Protected Areas (Routledge, 2016) and teaches marine conservation planning at the University of Primorska in Slovenia, research that asks where ecology meets international law.

Explore Croatia Center
Jessica Shepherd
Program Manager, Italy

A British citizen whose childhood holidays in Tuscany became a career in Italy, first building a head office and showroom in Milan for a global fashion brand, then moving into study abroad in 2017 to run a campus welcoming American students to the Italian countryside. Her focus on sustainable agriculture connects students to the farmers, vintners, and artisans whose livelihoods depend on practices that either sustain or deplete the soil.

Explore Italy Center
Moses Makonjio Okello, PhD
Center Director, Kenya
PhD, Wildlife Ecology, University of Alberta

A full professor with over 50 peer-reviewed papers and 10 book chapters on wildlife ecology in the Amboseli ecosystem. Moses founded and directed SFS Tanzania in addition to Kenya, served as SFS Senior Director of East Africa, and was named KWS Honorary Warden for Amboseli. His research on elephant conservation, wildlife dispersal, and human-wildlife conflict has directly shaped conservation initiatives across the Kenya-Tanzania borderlands.

Explore Kenya Center
Leon Mach, PhD
Center Director, Panama
PhD, Energy and Environmental Policy, Univ. of Delaware

A Fulbright Scholar whose interdisciplinary research sits at the intersection of tourism and sustainable development, studying surf tourism, Indigenous-led ecotourism, and protected area governance in Bocas del Toro. His USAID-funded work in El Salvador led to the creation of destination management organizations in two surf communities, demonstrating how social science fieldwork can translate directly into conservation outcomes.

Explore Panama Center
Fernando Mendive, PhD
Center Director, Peru
PhD, Molecular Biology, University of Buenos Aires

Trained in molecular biology in Buenos Aires with postdoctoral work in Brussels, Fernando pivoted to the Amazon two decades ago to ask how indigenous knowledge and medicinal plants can serve human health and wellbeing. He builds bridges between Western and indigenous knowledge, pioneering intercultural approaches that carry meaning across very different ways of knowing. His projects range from clinical research in mental health to phytopharmaceutical development and business models that put real value on what Amazonian indigenous peoples know about medicinal plants.

Explore Peru Center
Bernard Kissui, PhD
Center Director, Tanzania; Lecturer in Wildlife Management
PhD, Ecology, Evolution and Behavior, Univ. of Minnesota

Principal scientist of the long-term carnivore research project in the Tarangire-Manyara ecosystem, Bernard's team monitors lions and large carnivores across the Maasai Steppe. A veteran of the Serengeti Lion Project who worked in both Serengeti National Park and the Ngorongoro Conservation Area, his current research focuses on population demographics, spatial movement, conflict mitigation, and the central challenge of his career: how pastoral communities and predators share a landscape.

Explore Tanzania Center
Heidi Hertler, PhD, SFS Alumna
Center Director, Turks & Caicos
PhD, Environmental Science, Drexel University

Heidi integrates water chemistry, plant biology, and invertebrate physiology to understand how land-use practices impact the health and resilience of marine ecosystems. She leads long-term reef monitoring initiatives in the Turks and Caicos Islands. As an educator and mentor, she creates immersive, field-based learning experiences that challenge students to reach their full potential while cultivating scientific curiosity, collaboration, and discovery. Through community partnerships, she fosters environmental stewardship and strengthens local engagement in marine conservation.

Explore TCI Center

In the Field

Faculty & Researchers

The lecturers and researchers who teach courses, lead field exercises, and mentor student research at each center.

Sigrid Heise-Pavlov, PhD
Professor of Wildlife and Conservation Biology
PhD, Terrestrial Ecology, University of Halle

Recipient of the Cassowary Award for outstanding conservation work, Sigrid studies the ecology and behavior of Lumholtz's tree-kangaroos (including pre-release training for orphaned individuals) and the colonization of restored rainforest by wildlife along the Daintree Coast. Her earlier career in Germany focused on rodent population dynamics and chemical communication in vertebrates.

Deborah Apgaua, PhD
Lecturer of Tropical Biome Ecology
PhD, Forest Sciences, Federal Univ. of Lavras / James Cook Univ.

A Schlumberger Foundation fellow who used a canopy crane to study how mature rainforest trees respond to experimental drought, Deborah's research spans plant functional traits, fire ecology, and climate change biology across Brazilian and Australian forests. She now collaborates with Atherton Tablelands farmers on regenerative agriculture and food security.

Sonam Phuntsho
Chief Program Manager
MS, Forestry, Australian National University

Sonam helped establish two of Bhutan's first community forests in Bumthang in 2003, then spent over a decade promoting social forestry across rural districts before joining the country's leading environmental research institute (UWICER). His research on community forestry and sacred groves examines how social and ecological values intersect in Bhutanese landscapes.

Kuenga Wangmo, PhD
Lecturer in Political and Socioeconomic Dimensions of Environment
PhD, Archaeology, University of Cambridge

Bhutan's first archaeologist and a National Geographic Explorer, Kuenga holds degrees from Harvard and Cambridge and has worked on sites across Bhutan, India, and the United States. Her research explores the complex intersections of development and conservation through sacred landscapes, ethnobotany, traditional ecological knowledge, and Gross National Happiness.

Tshering Tempa, PhD
Lecturer in Mountain Ecology
PhD, Wildlife Biology, University of Montana

Bhutan's leading tiger biologist and a National Geographic Explorer, Tshering started the first systematic camera-trap monitoring of tigers in Royal Manas National Park and has spent over 20 years in Bhutan's wilderness. An IUCN Tiger Specialist Group member, he uses radio telemetry and non-invasive genetics to study predator-prey dynamics and population connectivity across the Himalayas.

Norbu Wangdi, PhD
Lecturer in Land Use, Natural Resources and Conservation
PhD, Natural Resources, BOKU Vienna

A former Chief Forestry Officer for the Royal Government, Dean of Academic Affairs at UWICER, and member of Bhutan's National Water Resource Board, Norbu now serves as Principal Scientist for the Bhutan Ecological Society. His research examines the long-term societal impacts of climate change on biodiversity and strategies for enhancing ecosystem and community resilience.

Francisco Aguirre, PhD
Lecturer in Earth Systems and Climate Science
PhD, Antarctic and Sub-Antarctic Sciences, Univ. de Magallanes

Francisco implemented Long-Term Ecological Network stations measuring greenhouse gases for the Cape Horn International Center, then helped build a prototype alert system for glacier-related flood events with the Gaia Antarctic Research Center. He currently collaborates with the Chilean Antarctic Institute on climate variability and its impacts on glaciers and snow season across Patagonia.

Glenda Hevia, PhD
Lecturer in Patagonian Ecology
PhD, Biology, National University of Córdoba

A wildlife biologist who studies the breeding biology, population ecology, and conservation of shorebirds, Glenda built her research on the Two-banded Plovers of coastal Patagonia, tracking incubation, parental care, and the effects of human activity on their nesting beaches. Born in Córdoba, Argentina, she has worked in Antarctica as a research technician and sailed as an ornithologist aboard polar expedition cruises.

Florencia Sánchez
Lecturer in Political and Social Dimensions of Conservation
BS, Geology, Universidad del Desarrollo

A geologist pursuing her PhD in geoconservation and geoheritage at the University of Minho, Portugal, Florencia studies volcanic heritage sites across Chile's Southern Volcanic Zone. Her research asks how geologically significant landscapes, especially volcanoes, can be preserved, valued, and integrated into broader conservation frameworks.

Mary Little, LL.M.
Professor of Justice, Resilience and Environment
LL.M., International Human Rights Law, University of Essex

A sociologist who began as a human rights lawyer, Mary first studied gender and the environment as drivers of internal displacement and asylum, then followed the connections among food production, local development, and climate adaptation through agrotourism. Her doctoral research now focuses on food sovereignty rooted in social solidarity and circular economies, asking how just food systems can support just tourism.

Milena Cambronero, M.S.
Lecturer in Natural Resource Management
MSc, Biology, University of Costa Rica

Raised among coffee plantations in San Ramón, Milena studies the changing landscape of Costa Rica's Western Central Valley, where urban expansion, agriculture, and tourism reshape the forests that give communities water, stable soils, and stored carbon. Tracing how remaining forest patches keep medium- and large-sized mammals moving, she identifies priority areas where conservation can benefit biodiversity and people.

Jeremy Klank
Lecturer in Tropical Ecology and Ecosystem Resilience
MSc, Biology, University of Costa Rica

A member of the IUCN Amphibian Specialist Group for Costa Rica, Jeremy studies the chemical ecology of poison frogs, tracing the links among diet, toxin profiles, and predator defense. Since 2018 he has worked to map the country's amphibians and reptiles, from endangered populations to new species, co-describing a Bolitoglossa salamander in 2025. He also follows how avian communities change with latitudinal migration.

Grgur Pleslić, PhD
Lecturer in Cetacean Ecology
PhD, Biology, University of Zagreb

An Assistant Professor at the University of Primorska, Grgur has conducted boat-based dolphin research with the Blue World Institute since 2008, using photo-identification data to model population parameters, home range, habitat use, and social structure of bottlenose dolphins. He has also participated in aerial surveys of cetacean populations across the Adriatic Sea.

Mateja Zekan Lupić
Lecturer in Sea Turtle Rescue and Rehabilitation
MSc, Marine Biology, University of Trieste

Manager of the Sea Turtle Rescue Center at Croatia's Blue World Institute since 2012, Mateja provides care for sick and injured loggerhead turtles and has contributed to EU-wide conservation projects including NETCET and LIFE EUROTURTLES. She served on the Organizing Committee for the 6th Mediterranean Conference on Marine Turtles.

Matic Jančič
Lecturer
MSc, Nature Conservation, University of Primorska

A PhD candidate at the University of Ljubljana whose dissertation maps the spatial ecology of loggerhead sea turtles across the Adriatic using satellite and GPS-GSM tags. Matic supervised fieldwork under the LIFE EUROTURTLES project evaluating small-scale fisheries bycatch, and is investigating how climate change and alien invasive species are shifting sea turtle diets.

Maddalena Cirani
Contract Professor: Lecturer in Food Systems Resource Management
MSc, Agroecology, Norwegian Univ. of Life Sciences / ISARA France; MSc, Global Studies, University of Gothenburg

Maddalena spent fifteen years at the Volvo Group as a research engineer and innovation project manager before turning to sustainability research. She now studies food systems and consumer practices, from sustainable consumption in rural Italy to land tenure among pastoralists in northern Kenya. Italian by birth and long based in Sweden, she is happiest teaching students to read food, people, and place as one system.

Gherardo Biancofiore
Contract Professor: Lecturer in Food Systems Ecology
MSc, Agricultural Science and Technology, University of Florence

An agronomist with Deafal, the Italian NGO for organic and regenerative agriculture, Gherardo has published on soil biodiversity, on how keyline farming curbs erosion, and on quinoa and amaranth cultivation, including a chapter in the agronomy textbook Coltivazioni erbacee (Edagricole, 2023). He has taught soil sessions at the Italy center since 2024, on rapid methods for assessing soil health in the field.

Lorenzo Costa, PhD
Contract Professor: Lecturer in Agri-environmental Policy and Socioeconomic Values
PhD, European Contemporary History, University of Bologna

For twenty years Lorenzo has worked at the University of Siena as a technician in the Department of Biotechnologies and Chemistry. He also runs La Scoscesa, the farm he founded in 2018 in Gaiole in Chianti. He holds a diploma in permaculture design and teaches permaculture design courses across Italy, working as a consultant and teacher in landscape reading and water management.

John Warui Kiringe, PhD
Professor of Ecology of Endangered Wildlife
PhD, Wildlife Ecology, University of Leicester

With over 20 years and 20-plus publications in wildlife and range ecology, John joined SFS in 2000 as resident faculty at the Kilimanjaro Bush Camp. His research spans human-wildlife conflict, rangeland management, water use dynamics, and ethnobotany across the Amboseli ecosystem, with extensive consultancy work for the Kenyan government on environmental impact assessment.

Jennifer Wanyingi
Resident Lecturer of Endangered Species Conservation
MSc, Wildlife Management, Moi University

Jennifer's master's research investigated the drivers of human-elephant conflict in Shimba Hills National Reserve, leading to projects that enhance local livelihoods through beekeeping and community-based resource management. She also collaborates on primatology research across Africa and brings GIS expertise to mapping species ecology and protected area dynamics.

Lucy Atieno, PhD
Lecturer in Human Dimensions of Endangered Species
PhD, Social Science, University of Bremen

Lucy's doctoral thesis explores how coastal tourism in Kenya can adapt to climate change with a focus on equity, justice, and community-led solutions. She is editor of Sustainable Tourism Dialogues in Africa (De Gruyter, 2022) and uses participatory workshops and individual mental modeling to co-design conservation solutions with local communities.

Daniel Medina, PhD
Lecturer in Tropical Forest Ecology and Resource Management
PhD, Biological Sciences, Virginia Tech

As an undergraduate, Daniel witnessed the dramatic decline of Panamanian amphibians from chytrid fungus, an experience that shaped his entire career. Through his master's, PhD, and postdoctoral work he studied how amphibians manage to coexist with the pathogen, focusing on the protective bacteria that live on frog skin and how altitude, pathogen genetics, and habitat loss shape the defense those microbes provide.

Eirlys Tysall
Lecturer in Tropical Coastal Ecology
PhD, Zoology, University of Cambridge

An evolutionary ecologist drawn to how marine species adapt to a changing ocean, Eirlys spent an undergraduate year in a bioacoustics lab in Hawaiʻi before interning at the Smithsonian Tropical Research Institute. Her PhD examined how coral reef fishes adapt across the Isthmus of Panama, with fieldwork on both coasts including Bocas del Toro. A postdoc in Sicily followed, tracking the Mediterranean mussel under climate change.

Holly Hummel, M.A.
Lecturer in Cultural Competency in Conservation, Community Coordinator and Cultural Liaison
MA, Environmental Studies, Prescott College

Holly served as a Peace Corps marine conservation educator in a rural indigenous community in Bocas del Toro, an experience that rooted her in the region and now informs her role as cultural liaison. Trained in anthropology with a zoology minor from UT Austin, she brings fieldwork in primate behavior and an MA in Environmental Studies from Prescott College to community-centered conservation education.

Cecilia Barriga, PhD
Lecturer in Conservation Science and Practice
PhD, Environmental Science, George Mason University

A Peruvian biologist whose mammal work spans the country, from biodiversity assessments to management plans, Cecilia saw firsthand how much conservation depends on the people who live alongside it. Her research traces the relationship between biodiversity and ecosystem services in indigenous communities, giving forest managers better information and grounding sustainable development in local traditions.

Raquel Bone Guzman
Lecturer in Tropical Ecology
MSc, Biology, University of Costa Rica

A Costa Rican biologist at home in cloud forest, lowland rainforest, and páramo, Raquel came to wildlife ecology as a volunteer monitoring wild cats and helping farmers coexist with them. Her master’s research traced how landscape and management shape the distribution of mammals in a forest reserve on the Osa Peninsula. She also works in ecotourism and environmental education, and has guest lectured for SFS.

Edwin Rap
Lecturer in Political Ecology (Fall 2026)
PhD, Rural Development Sociology, Wageningen University

Trained as both engineer and anthropologist in the interdisciplinary field of international water management, Edwin pairs technical and social science perspectives, and qualitative methods with quantitative ones. An academic trainer, freelance researcher, and creative entrepreneur, he teaches with lively examples drawn from his own research experiences across Africa, Asia, Latin America, and Europe.

Sonja Bleeker
Lecturer in Political Ecology (Spring 2027)
MS, Land and Water Management, Wageningen University

In collaboration with Wageningen University and Peru's Pontificia Universidad Católica, Sonja has conducted extensive research on hydrosocial territories, examining power dynamics and perceptions surrounding water in urban and rural areas. Her work includes studying the impact of Payment for Ecosystem Services schemes on local conservation and livelihoods, through the lens of environmental justice, ecofeminism, and indigenous rights.

John Mwamhanga, M.S.
Lecturer in Environmental Policy
MSc, Community Economic Development, Southern New Hampshire Univ.

Before joining SFS in 2010, John served as Zonal Manager for forestry and beekeeping extension under Tanzania's Ministry of Natural Resources, and successfully established two of the country's first pilot Wildlife Management Areas through the Ugalla Community Conservation Project. He now manages community relationships across the Tarangire-Manyara ecosystem and serves as Deputy Center Director.

Egidius James Rwebuga, PhD
Lecturer in Wildlife Ecology
PhD, Wildlife Management, Sokoine Univ. of Agriculture

With 22 years in wildlife management, Egidius's master's investigated how the international ivory trade ban affected hippo populations in the Katavi-Rukwa-Lukwati ecosystem; his PhD examines rodent communities in maize fields and grasslands of the western Serengeti. He and colleagues now run a long-term small mammal ecology project at SFS Tanzania, using rodents as indicators of environmental change.

Yuqian Zhang, 张宇乾, PhD
Lecturer in Marine Conservation Governance
PhD, Fisheries and Wildlife, Michigan State University

Yuqian is an interdisciplinary scholar and educator trained in fisheries, wildlife, environmental policy, and software engineering. He integrates natural, social, and data sciences to translate complex datasets into practical conservation insights. Affiliated with the LTER Network, his work addresses marine conservation and sustainability challenges and has been published in Nature Communications and Methods in Ecology and Evolution.

Ben Fitkov-Norris, PhD
Lecturer in Marine Resource Management
PhD, Environmental Intelligence, University of Exeter

A marine ecological data scientist from the UK, Ben studied Biological Sciences at Oxford before a PhD at Exeter on how fishing behavior shifts once offshore wind farms go up, pairing ecological and spatial data. Earlier work put him on coral reefs in the Bahamas, Indonesia, and Timor-Leste. A compulsive identifier of fish, birds, and whatever else crosses his path, he takes any excuse to get back in the water.

Sophie Carolan
Lecturer in Tropical Marine Ecology
PhD candidate, Marine Biology, Newcastle University

Sophie's doctoral research, in partnership with Operation Wallacea, asks why some Honduran reefs hold up better than expected under stress. She has worked on reef conservation projects in Honduras, Indonesia, and the Seychelles, running benthic and fish surveys, mapping reef structure in 3D, and restoring coral. She also teaches in the water and arrives in South Caicos keen to add seagrass and mangroves to her range.

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Our faculty conduct research alongside students at every center. See what that looks like.