Our Experts

Conservation International has leading experts in science, policy and partnerships.

© Conservation International/photo by John Martin

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Peter Seligmann

Chairman of the Board

Peter Seligmann has a vision and a mission. The vision is an environmentally healthy world that wil​l provide economic opportunities and security for all peo​​​ple.​​​​​

M. Sanjayan, Ph.D.

Chief Executive Officer

M. Sanjayan is a global conservation scientist whose work spans from genetics to wildlife migration to nature’s impacts on human well-being. He has served as Conservation International’s chief executive officer since 2017.

Sebastian Troëng, Ph.D.

Executive Vice President, Conservation Partnerships

As Executive Vice President, Dr. Sebastian Troëng leads the Conservation Partnerships team that leverages public and private sector support to scale up conservation impacts benefiting nature, people and our global climate.

Johan Rockström, Ph.D.

Chief Scientist

Johan Rockström is Chief Scientist at Conservation International. He also serves as co-director of the Potsdam Institute for Climate Impact Research, one of Europe’s leading centers for climate change and sustainability research.

Aulani Wilhelm

Senior Vice President, Center for Oceans

For over two decades, Aulani Wilhelm has worked to protect the ocean and the resources it provides. As the senior vice president of the Conservation International Center for Oceans she will build on her past successes, helping to lead the designation of the Papahānaumokuākea Marine National Monument and founding the Big Ocean Network, to protect the marine resources that people rely on for food, livelihoods and culture.

Michael B. Mascia, Ph.D.

Senior Vice President, Moore Center for Science

​Dr. Michael B. Mascia leads Conservation International’s social science research and capacity-building efforts, in order to build a foundation for the next generation of conservation science and policy.

James Roth

Senior Vice President, Global Policy and Government Relations

James Roth is Senior Vice President for Global Policy and Government Relations, overseeing Conservation International’s U.S. Government Relations and International Policy teams, as well as its Distinguished Fellows Program.

Agustin Silvani

Senior Vice President, Conservation Finance

Agustin Silvani heads Conservation International’s Conservation Finance Division (CFD), which is dedicated to the development and financing of pioneering solutions for lasting change in environmental conservation.

Michael O’Brien-Onyeka

Senior Vice President, Africa Field Division

Michael O’Brien-Onyeka is Senior Vice President for the Africa Field Division at Conservation International. In this role, he is leading a refreshed Conservation International Africa strategy focused on sustaining the nature that Africans rely on to thrive, building on Conservation International’s successes across Africa, and leveraging the Gaborone Declaration for Sustainability in Africa (GDSA) to drive a new sustainable development paradigm across the continent.

Will Turner, Ph.D.

Senior Vice President, Natural Climate Solutions

Dr. Will Turner’s interests focus on integrating our knowledge of biodiversity, climate change and socioeconomics to safeguard biodiversity and support the billions who depend on it.

John Buchanan

Vice President, Sustainable Production, Center for Environmental Leadership in Business

John Buchanan has held several different roles at Conservation International, focusing mainly on food and agriculture. John is currently focusing on development and implementation of sustainable agriculture and supply chain initiatives.

Bambi Semroc

Acting Head, Senior Vice-President, Sustainable Lands + Waters

​Bambi Semroc is the Vice President of Sustainable Markets and Strategy. In this role, she leads the Sustainable Coffee Challenge, an industry-wide effort led by Conservation International to make coffee the first sustainable agricultural product in the world.

Shyla Raghav

Vice President of Climate Change, Global Strategy Group

Shyla Raghav leads Conservation International’s climate strategy to build and support the development and implementation of climate change mitigation and adaptation action globally.

Lee Hannah, Ph.D.

Senior Scientist, Climate Change Biology, Moore Center for Science

Dr. Lee Hannah heads Conservation International’s efforts to develop conservation responses to climate change. Lee works collaboratively with the Bren School and UC Santa Barbara to model climate impacts on species in California, and with the National Botanical Institute in Cape Town, South Africa to model biotic change resulting from global warming in biodiversity hot spots in that region.

Emily Pidgeon, Ph.D.

Senior Director, Strategic Marine Initiatives, Center for Oceans

Dr. Emily Pidgeon works on developing solutions for coastal and marine adaptation to climate change and on marine based approaches for mitigation through “blue carbon.”