Our Experts

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

© Conservation International/photo by John Martin



  • Expertise
  • Language
  • Location

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 conservation scientist and chief executive officer of Conservation International, an organization working primarily in the Global South to secure nature for humanity.

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

Aulani Wilhelm is the senior vice president for Oceans at Conservation International. Her work bridges culture, community and science to drive innovations in ocean conservation.

Michael B. Mascia, Ph.D.

Senior Vice President, Moore Center for Science

Dr. Michael B. Mascia is Senior Vice President of the Moore Center for Science at Conservation International, where he leads CI’s conservation science and technology initiatives.

James Roth

Senior Vice President, Global Policy and Government Affairs

James Roth is Senior Vice President for Global Policy and Government Affairs, overseeing Conservation International’s U.S. Government Affairs 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.

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

Senior Vice-President, Sustainable Lands + Waters

Bambi Semroc is Senior Vice President of the Center for Sustainable Lands and Waters at Conservation International.

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.

Vice President, Ocean Science and Innovation

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.”

Bronson Griscom

Senior Director, Natural Climate Solutions

Bronson leads Conservation International’s Natural Climate Solutions science team, playing a key role in the strategic development of natural climate solutions science across the organization, leading a research agenda that helps deliver on Conservation International’s climate goals.