LelandWerden, PhD

Restoration ecologist bridging science and practice

Senior Scientist, ETH Zurich

About

Restoration & conservation Ecosystem ecology Nature tech

I am a restoration scientist and forest ecologist developing tools to conserve and restore degraded forests and to advance agroforestry practice in smallholder farming landscapes. My fieldwork has spanned tropical wet and dry forests in Costa Rica, Hawai‘i, Mexico, and Cambodia, and temperate forests across the United States and Europe.

My work aims to bridge the gap between ecological theory and on-the-ground practice, ensuring that real-world challenges shape research aims and lead to scalable solutions.

This research has informed restoration implementation across 1,000+ hectares and contributed to policy frameworks like the Forest Declaration Assessment. You can also watch a video of me discussing our work during the Funga speaker series.

I am currently a senior scientist at ETH Zurich, where my group works to improve global restoration outcomes and direct investment toward nature-based solutions. I also serve as Chief Scientific Advisor to the Plant-for-the-Planet Foundation. Alongside my research, I advise NGOs, foundations, agencies, and companies on restoration strategy, monitoring, and impact evaluation.

If you are interested in collaborating on any aspect of forest restoration or agroforestry science and implementation, please reach out.

Leland Werden
18+Years in
the field
50+Peer-reviewed
publications
500+Practitioners
reached
300+Partner
organizations
$2M+Competitive
funding raised
1,000+Hectares under
restoration

Research

Selected publications

For a complete list of my publications, see my Google Scholar profile or CV.

Impact & engagement

Boards & advisory

Co-founding board member of the Tropical Landscape and Climate Program, chief scientific advisor to Plant-for-the-Planet, and on the scientific advisory board of Green Again Madagascar.

Consulting

I advise NGOs, agencies, and companies across restoration and carbon-project MRV: ecological project design, on-the-ground and remote-sensing impact evaluation, LiDAR-based carbon accounting, and alignment with major standards including Verra, Isometric, ISO 14064, the GHG Protocol Land Sector and Removals Guidance, and SBTi. Get in touch.

Collaborative Earth

Lab leader (2022–2025): I directed a team of more than 20 volunteers synthesizing the grey literature to quantify carbon and biodiversity recovery across forest, savanna, and mangrove restoration.

Scientific leadership

Co-lead a Science for Nature and People Partnership (SNAPP) working group on restoration monitoring, author the restoration chapter of the Forest Declaration Assessment, and contribute to the UNFCCC Climate Champions.

Peer review & editing

Reviewer for more than 50 journals across ecology, restoration, conservation, and plant science; guest editor at Frontiers in Forests and Global Change; and grant-panel reviewer, including for the U.S. Department of Energy.

Mentorship & capacity building

I have mentored graduate and undergraduate researchers across four universities, co-taught ETH Zürich's restoration course, and co-founded the Las Hermanas Carpenter Scholarship for Costa Rican students.

Skills & methods

Fieldground surveys (vegetation, insects, birds) · soil science · plant ecophysiology & drought stress · seed collection, seedling care & outplanting design · field-trial experimental design
Data science & remote sensingR · Python · DuckDB · R Markdown · Streamlit · Shiny · HTML · Google Earth Engine · QGIS · aerial LiDAR · GEDI · UAV photogrammetry · OpenDroneMap
Leadershipresearch/impact team design & management · long-term restoration & conservation planning · reproducible data analysis pipeline design