Executive Team

Meet Our Leaders

Executive Team Members
Mark Tercek, President and CEO

Mark Tercek is president and CEO of The Nature Conservancy, the global conservation organization known for its intense focus on collaboration and getting things done for the benefit of people and nature. He is the author of the Washington Post and Publisher’s Weekly bestselling book Nature’s Fortune:  How Business and Society Thrive by Investing in Nature

Growing up as a city kid in Cleveland, Mark was a late-bloomer to conservation. It was becoming a parent that sparked his passion for nature. “I want to be able to look my kids in the eye,” he says, “and tell them I did all I could to leave the world a better place.”   

A former managing director and Partner for Goldman Sachs, where he spent 24 years, Mark brings deep business experience to his role leading the Conservancy. He is a champion of the idea of natural capital — valuing nature for its own sake as well as for the services it provides for people, such as clean air and water, productive soils and a stable climate.   

Mark’s leadership of TNC has been profiled in The New Yorker, Bloomberg BusinessWeek, the Wall Street Journal and The Atlantic

During his time at Goldman Sachs, Mark managed several of the firm’s key units, including Corporate Finance, Equity Capital Markets and Pine Street, the firm’s leadership development program.  In 2005, after two decades as an investment banker, Mark was tapped to develop the firm’s environmental strategy and to lead its Environmental Markets Group. 

Inspired by the opportunity to help businesses, governments and environmental organizations work together in new, innovative ways, Mark left Goldman Sachs in 2008 to head up The Nature Conservancy.  

In 2012, Mark was appointed by New York Governor Andrew Cuomo to serve on the New York State 2100 Commission, which was created in the wake of Superstorm Sandy to advise the governor and the state on how to make the state’s infrastructure more resilient to future storms. Mark is also a member of several boards and councils, including Resources for the Future, the Nicholas Institute for Environmental Policy Solutions, Harvard Business School's Social Enterprise Initiative, the Council on Foreign Relations, and SNAPP, TNC's science joint venture with UC Santa Barbara and the Wildlife Conservation Society. Mark also serves on the Williams College Board of Trustees and was on the finance faculty of New York University's Stern School of Business until 2008.

Drawing on his professional background in the financial sector, Mark is leading TNC’s impact capital initiative and serves as board chair of NatureVest.

Mark earned an M.B.A. from Harvard in 1984 and a B.A. from Williams College in 1979. [more...]

Brian McPeek, Chief Conservation Officer 

As Chief Conservation Officer, Brian McPeek works closely with The Nature Conservancy’s president and CEO to lead and manage all major organizational initiatives. He oversees the Conservancy’s Conservation, External Affairs and Philanthropy divisions, and works to develop and implement new ways to collaborate across teams and borders.

In his previous role as the Conservancy’s regional managing director for North America, McPeek led a team responsible for planning and developing the organization’s long-term priorities and strengthening its conservation work among strategy teams and the field. He also worked closely with an integrated leadership team to advance a national conservation agenda. 

McPeek was also instrumental in the launch of the Forever Costa Rica project and strengthened the management of conservation programs by creating and launching the Conservation Measures Business Plan. Previously, as the deputy director of the Conservancy's Colorado program, he oversaw the community-based work in 12 Colorado landscapes as well as statewide science, land conservation, forest health, water and public policy initiatives. 

Prior to joining the Conservancy, McPeek was with McKinsey & Company, where he advised Fortune 500, private equity, and select start-up companies on strategic issues, specializing in capital markets and corporate strategy. In addition, he has served in a variety of positions during eight years of active duty as an officer in the U.S. Air Force, including assignments with the Office of the Secretary of Defense and Air Force Headquarters.

McPeek earned a master's in international relations from Georgetown University, School of Foreign Service and a B.A. from Duke University.


Wisla Heneghan is the Chief Operating Officer and General Counsel of The Nature Conservancy. Wisla oversees the global finance, technology, human resources, internal audit, ethics & compliance, diversity & inclusion, and legal functions of the Conservancy.

Wisla works closely with the President & CEO and the Chief Conservation Officer in the management of the Conservancy. In addition, in her role as General Counsel Wisla provides legal and risk mitigation guidance to the organization and its Board of Directors.

Wisla joined the Conservancy in 2013 and has nearly 20 years of management and legal experience in for-profit and non-profit organizations. Wisla is focused on increasing organizational effectiveness, developing robust frameworks for enabling the organization to carry out its conservation mission, and addressing the challenges of global operations and the deployment of talent, tools, information and other resources to meet the needs of the Conservancy worldwide. Wisla is highly engaged in ensuring an inclusive and diverse workplace and developing the next generation of conservation leaders.

Prior to joining the Conservancy, Wisla served as Vice President and Associate General Counsel for Staples, a $25 billion international office products company with businesses in over 25 countries throughout North and South America, Europe and Asia. While at Staples Wisla focused on complex commercial transactions, developing markets in China, India and Brazil, organizational growth in Europe, environmental issues, and mergers and acquisitions. Prior to joining Staples, Wisla was in private legal practice with the law firm of Goodwin Procter and the law firm of Mintz, Levin, Cohn, Ferris, Glovsky and Popeo which she joined after graduating from Boston University School of Law.

Wisla was born in Brazil and raised in Brazil and New York. In addition to Portuguese and English, Wisla is also fluent in Spanish.

Justin Adams, Global Managing Director, Lands

Justin Adams is the Global Managing Director, Lands, at The Nature Conservancy, where he leads a broad team of Conservancy staff operating at the intersection of global development and environmental challenges, including sustainable agriculture, forests and climate change, smart infrastructure, and indigenous and communal conservation.

Justin has spent more than 20 years championing innovation and sustainability. Most recently, he has worked as a Senior Advisor to the World Bank where he helped design and raise $300 million for the BioCarbon Fund’s Initiative for Sustainable Forested Landscapes. Previously, Justin was a senior executive at BP for 10 years where he helped to build its $8 billion renewables division, Alternative Energy.

Justin is a Fellow at the Smith School of Enterprise and the Environment at the University of Oxford and is also completing a role as Chairman of Mendel Plant Sciences. He received a Bachelor’s degree in Business Administration and Management from the University of Bath, in the United Kingdom.

Kacky Andrews, Director of Conservation Programs for North America Region 

Kacky Andrews works for The Nature Conservancy as Director of Conservation Programs for the North America Region. Her background includes several years at NOAA as Program Manager of the Coral Reef Conservation Program and a post as Executive Director of the Coastal States Organization, a DC-based nonprofit that represents interests of the Governors of the 35 coastal states and territories on legislative and policy issues related to coastal and ocean management. 

A native Floridian, Kacky spent eight years with the Florida Department of Environmental Protection, where as Director of Coastal and Aquatic Managed Areas, she oversaw the management of nearly 2 million acres of sovereign submerged lands in the state system of Aquatic Preserves and three National Estuarine Research Reserves. Kacky also served as Florida's Co-Trustee in the Florida Keys National Marine Sanctuary, initiated Florida's Coral Reef Conservation Program for southeast Florida, and was lead for the state on the Gulf of Mexico Alliance.

While in Florida, Kacky also spent almost two years with the Conservancy’s Florida Chapter as the Director of Government Relations. She has a B.A. in Economics from Duke University, a J.D. from the University of Florida, and a LL.M. in Environmental and Natural Resources Law from the Northwestern School of Law at Lewis and Clark College.

Jim Asp, Chief Development Officer

Jim Asp joined The Nature Conservancy in the summer of 2015 as Chief Development Officer. Prior to arriving at TNC he served as Senior Vice President and Chief Development Officer at Brigham and Women’s Hospital in Boston. Jim has over 30 years of experience in Development, especially building and managing development programs and planning and implementing campaigns. He has worked primarily in higher education and academic medicine, including leadership roles at the University of California, San Francisco; Memorial Sloan-Kettering Cancer Center; the University of California, Irvine; and The George Washington University. Jim has co-authored a book and written numerous articles on the role of philanthropy within non-profit organizations and he is a frequent speaker at professional conferences. He holds a Bachelor’s degree in Art History from the University of Minnesota and a Master’s degree in Higher Education Administration from The George Washington University.

David Banks, Regional Managing Director, Africa

David Banks is the Managing Director for The Nature Conservancy's Africa Region, a position he has held since 2007. He was the first staff person for the Africa Region and helped design and grow the program to its current level. Previously, Banks was the State Director for The Nature Conservancy in Alaska where he was responsible for all actions of the Alaska Chapter. He also worked closely with other senior managers to implement global strategies. David started as an intern with The Nature Conservancy in Indiana and has served in various fundraising, land acquisition, conservation planning, science and land management jobs with the Conservancy since 1994. Prior to his career with the Conservancy, he worked for community forestry programs in Texas and Indiana, and served for two years in Ghana as a Peace Corps volunteer working to restore forests in the West African Sahel. Banks has a BA in Political Science from Baylor University and a Masters degree in Public Administration and Natural Resource Management from Indiana University.

Charles Bedford, Regional Managing Director, Asia Pacific

Charles Bedford was appointed to lead the Conservancy's Asia Pacific Region (including Asia, the Pacific Islands, Indonesia and Australia) in January 2012. Most recently, Charles held key leadership roles where he was instrumental in the creation of the Mongolia program, strategy development for conservation programs in China and Mongolia, and in developing a China Program Board of Directors comprised of influential, high-level Chinese entrepreneurs. Previously, he led the Conservancy’s Colorado Program, where he assisted with the creation of America’s 58th national park, Great Sand Dunes National Park.

Prior to joining the Conservancy, Charles served as Director of the Colorado State Land Board, an organization responsible for the management of 3 million acres of public lands. He also served as Legal Counsel and Environmental Policy advisor to Colorado Governor Roy Romer and was a lawyer in private practice.

Charles is the author of several papers on natural resources law in addition to a new book, “Protecting China’s Biodiversity: A guide to land use, land tenure and land protection tools.” He holds a B.S.F.S. from Georgetown University and a J.D. from the University of Colorado Law School.

Giulio Boccaletti, Chief strategy officer & global managing director, water

Dr. Giulio Boccaletti is the Chief Strategy Officer of The Nature Conservancy, as well as its Global Managing Director for Water. In his role as Chief Strategy Officer, Giulio works with other members of the Executive Team to develop the organization’s strategy and apply economic and scientific practice to its conservation agenda. As Global Managing Director for Water, he works with over 200 staff worldwide on advancing the use of water-related natural infrastructure to address issues of economic development and sustainable growth.

Trained as a scientist, Giulio is an expert on environmental and economic sustainability with experience in deploying innovative, large-scale strategies that demonstrate how investing in nature will help us achieve a healthier, more prosperous, more resilient world. He has deep expertise on the intersection of natural resources, public policy and business conduct. Prior to joining The Nature Conservancy, Giulio was a partner at McKinsey and Company, where he founded the firm’s Global Water Resource initiative and was a leader of its Sustainability and Resource Productivity Practice. He has served public and private sector institutions on issues of resource economics in all five continents. Giulio has been a member of the Global Agenda Council on Water of the World Economic Forum (WEF), and is a member of its Global Futures Council on Environment and Natural Resource Security. In 2014, WEF named him a Young Global Leader for his ability to act as a driving force in shaping a sustainable future. 

Giulio started his career as a scientist with the Massachusetts Institute of Technology focused on atmospheric and ocean sciences and climate dynamics. He has a master’s in physics from the Università degli Studi di Bologna, and master’s and doctorate degrees in atmospheric and oceanic sciences from Princeton University.

Mark Burget, Executive Vice President and Managing Director, North America Region

Mark Burget serves The Nature Conservancy as Executive Vice President and North America Managing Director. He recently returned to the Conservancy after serving as President and Chief Operating Officer of the ClimateWorks Foundation, a global philanthropic network focused on energy and land use policy. Mr. Burget previously served as The Nature Conservancy's Chief Conservation Programs Officer, overseeing country programs in North America, Latin America, Africa, Australia and the Asia-Pacific Region. Over the past twenty years, Mr. Burget also has served the Conservancy as Director of Global Priorities, Director of the California Program and Director of the Colorado Program. He earned both his J.D. and M.B.A. from the University of Virginia and his BA in Government from Dartmouth College.

Maria Damanaki, Global Managing Director, Oceans

Maria Damanaki is the Global Managing Director for Oceans at The Nature Conservancy. She leads a global team focused on transforming how the world manages its oceans, including sustainable fisheries management, large-scale protection and restoration of coral reefs and other ecosystems, coastal resilience, and a first-of-its-kind mapping and quantification of the full value of the world’s oceans to people.

She believes that the only path to lasting, tangible results for a sustainable blue economy is collaboration across public, private and civil sectors – at both global and local levels – while always respecting the needs of both nature and people.

With over 30 years of public service in Europe, Maria most recently served the past four years as European Union Commissioner for Maritime Affairs and Fisheries.

William Ginn, Executive Vice President, global Conservation Initiatives

As Executive Vice President for the Global Conservation Initiatives Team, Bill Ginn is leading The Nature Conservancy’s work in impact investing, developing markets for natural capital and managing special conservation initiatives. NatureVest, the Conservancy's impact investing division reports to him. Support for NatureVest is provided by inaugural and lead funder, the Robertson Foundation, founding sponsor JPMorgan Chase & Co and the Grantham Foundation for the Protection of the Environment.

During his 18-year tenure with the Conservancy, Ginn has held a number of leadership roles in both U.S. and global programs. The past five years he served as Chief Conservation Officer, in which he led the conservation arm of The Nature Conservancy, consisting of seven divisions spanning over 35 countries, and worked to advance the organization's most significant projects and strategies. As Director of the Global Forest Partnership, he helped the Conservancy protect over three million acres of forest land through dozens of innovative deals. He also has served as Director of the Forest Conservation Strategies Program, Deputy Director of the Eastern U.S./Caribbean Region and Director of the Asia Pacific Region.

A thought-leader of the larger conservation community, Ginn is the author of Investing in Nature, a book about engaging the private sector in conservation.

Stephen Howell, Chief Financial and Administrative Officer

In May of 1995, Steve Howell joined The Nature Conservancy as controller. He was appointed Director of Finance and Accounting in 1996, Vice President of Finance in 1998, Chief Operations Officer in 1999, Chief Financial Officer in 2002, and currently holds the title of Chief Financial and Administrative Officer.

As CFAO, Howell oversees all aspects of the Finance, Human Resources, Technology and Information Systems, Facilities and Administration, and Internal Audit departments. Under his stewardship, the Conservancy's assets have grown from slightly more than 1 billion dollars in 1995 to more than 5 billion dollars today. Annual revenues and operating expenses have both tripled during this same time and the number of physical locations where the Conservancy operates is nearly five times that of when he joined the Conservancy.

Howell is a member of the AICPA and the Virginia Society of CPA's, has been a frequent speaker at American Institute of CPA national conferences, and serves on the audit committee of the American Psychological Association.

JOE KEENAN, Executive Vice President, LATIN AMERICA

Joe Keenan is Executive Vice President of The Nature Conservancy's Latin America Region where he leads a staff of more than 320 people based in sixteen countries. Under Keenan’s direction, the Conservancy engages in high-leverage conservation efforts, including designing innovative strategies for water security, sustainable food security, and smart infrastructure, collaborating with indigenous communities, strengthening protected areas, and establishing creative partnerships with the private sector. He is the Conservancy’s lead staff person for the Latin America Conservation Council, which was formed in 2011. Prior to tackling his current role in 2009, Keenan has held several other key positions within the Conservancy, including Managing Director of the South America Conservation Region, Director of the Eastern South America Division, Southern Mexico Director, Director of Conservation Strategy for the Brazil Division, and Manager of the Atlantic Forest Conservation Program. 

Marianne Kleiberg, Regional Managing Director for The Nature Conservancy Europe

Marianne Kleiberg is the Regional Managing Director for The Nature Conservancy Europe. With offices and staff located in Berlin and London, the Nature Conservancy Europe works collaboratively with European governments, development banks, companies, academic institutions and volunteer leaders to strengthen support and mobilize action for conservation and climate change.

Prior, Marianne was the Director of Conservation and Deputy Director for the Conservancy’s Caribbean Program where she oversaw the operations of 6 country offices and led a multi-disciplinary team in the execution of conservation strategies in 16 island nations and territories, including the Caribbean Challenge Initiative, a US$40 million effort to create a network of marine protected areas spanning 21 million acres of coasts and waters. As the director for the Central Caribbean Program, Marianne spearheaded the Conservancy’s efforts in the Dominican Republic, including the implementation of a $10 million grant from USAID, and established new country programs in Haiti and Cuba.

Marianne joined the Conservancy in 1999 and spent nearly a decade managing the Gulf of California Program in La Paz, Mexico. Before joining the Conservancy, she worked as an international development consultant and operations manager of a manganese mining company in Panama. She earned a bachelor’s degree and master’s degree as a Fulbright Scholar in Latin American Studies, with a concentration in political ecology, from the University of Arizona. She’s a native of Norway and fluent in Norwegian, English and Spanish. Marianne is currently based in Berlin, Germany.

Pascal Mittermaier, Global Managing Director, Cities

Pascal Mittermaier is the Global Managing Director for Cities at The Nature Conservancy. He leads a new team at the Conservancy focused on transforming how the world’s growing cities manage their natural resources.
By mid-century roughly three out of every four people will live in a city. Pascal believes the Conservancy is uniquely positioned to help city leaders and stakeholders lead the world on a more sustainable path that fully values and protects the natural resources cities need to thrive.
Most recently, Pascal served as the Head of Sustainability, Europe and Managing Director for London’s Elephant & Castle Regeneration at Lend Lease, a global property and construction company. The Elephant & Castle project in central London is one of the most sustainable precinct-wide regenerations in the world, incorporating many green and nature-based innovations. It is part of the C40 Cities Climate Positive Development Program, a network of leading cities from around the world committed to implementing meaningful and sustainable climate-related policies and programs.

Pascal was also a Board Director of FSC UK, and a frequent lecturer at Cambridge University’s Program for Sustainable Leadership. Prior to finding his career path in sustainability, Pascal worked at the Swiss healthcare company, Roche, where he was Managing Director of Roche in Canada and Italy.

Originally from Germany, Pascal has lived and worked in France, Japan, Australia, the United States, Canada, Italy and the UK. He studied Economics and History at the University of Pennsylvania in Philadelphia and completed his MSc. in Climate Change and Sustainable Development from DeMontfort University.

Hugh Possingham, Chief Scientist

Aside from his day job, Hugh has a variety of broader public roles advising policy makers, conservation groups and managers by sitting on 15 committees and boards outside the University of Queensland including: The Wentworth Group of Concerned Scientists (founding member), founding editor of Conservation Letters (an international scientific journal), Council of the Australian Academy of Science (recently stepped down), The Myer Foundation Environment committee and several Environmental NGO scientific advisory committees. He and Dr Barry Traill wrote “The Brigalow Declaration”, used by Premier Beattie to halve land clearing in Queensland thereby reducing greenhouse gas emissions in Australia by more than 5% per annum and saving an area the size of Portugal from conversion into farmland.

In November 2016, Hugh became The Chief Scientist of The Nature Conservancy, the world’s largest environmental non-government organization.  He will be based in Washington DC and Brisbane.

In 2016, Hugh was elected a foreign associate of the US National Academy of Sciences, the most prestigious science academy in the world.  He is one of less than 500 foreign associates – and the only one resident in Queensland.

The Possingham lab uses mathematics to formulate and solve problems for saving plants, animals and ecosystems.  They developed the most widely used conservation planning software in the world.  Marxan was used to underpin the rezoning of the Great Barrier Reef and is currently used in over 150 countries by over 6000 users – from the UK and USA to Madagascar and Brazil – to build the world’s marine and terrestrial landscape plans.  Marxan can be used to achieve conservation outcomes while maximizing development opportunities.  In addition, many governments and ENGOs use the group’s research for the allocation of funding to threatened species recovery and solving other conservation conundrums.

Possingham has coauthored 560+ refereed publications covered by the Web of Science (27 in Science, Nature or PNAS). He currently directs two national research centres across 11 institutions ($15 million per annum) and he has supervised (or is supervising) 80 PhD students and 50 postdoctoral fellows.

He has one psychological disorder: a compulsive desire to watch birds. 

Glenn Prickett, Chief External Affairs Officer

Glenn Prickett oversees international and U.S. government relations, corporate practices and sustainability efforts, and relationships with leading international institutions and non-governmental organizations for the Conservancy. He joined the Conservancy in January 2010 after two decades working on international environment and development policy.

Prickett comes to the Conservancy after 13 years at Conservation International, where he led efforts to engage the private and public sectors in conservation and sustainability. He founded and led CI’s Center for Environmental Leadership in Business, a division created to engage the private sector in developing solutions to environmental challenges. During his time at CI, he also led the organization’s policy and climate change teams. In 2009, Prickett served as a senior fellow at the United Nations Foundation to help shape core elements of an effective global response to climate change. He also served in the Clinton Administration as chief environmental advisor at the U.S. Agency for International Development, where he coordinated policy and budget for U.S. environmental and energy assistance to developing nations.

Prickett graduated from Yale University in 1988 with a B.A. in economics and political science.

Aurelio Ramos, Regional Managing Director for the Latin American Region

Aurelio Ramos is the Regional Managing Director for the Latin America Region at The Nature Conservancy (“TNC”), leading over 350 employees in 14 different countries to conserve the lands and waters in which all life depends.

Aurelio began his career with TNC in 2003 as the Director of the Northern Tropical Andes Conservation Program. In this role he directed and worked with his team in pioneering innovative, incentive-based conservation financing strategies across the Andean landscapes of Colombia, Ecuador, Peru and Venezuela. One of the major outputs of this work was the design and the development of the Water Funds model, a concept that has rapidly spread across Latin America through the creation of 32 water funds by its pillars of valuing of nature and improving watershed governance. In 2009 Aurelio became the Deputy of Conservation for the Latin America Region at TNC, taking the concept of incentive-based conservation to a regional scale. Under his leadership, the Latin America Water Fund Partnership was launched by The Nature Conservancy, the FEMSA Foundation, the Inter-American Bank, and the Global Environmental Facility. Over the past four years Aurelio has spent much of his time building the three regional strategies: Water Security, Food Security, and Smart Infrastructure.

In addition to his work in Latin America, Aurelio spent a year as a Senior Advisor to TNC’s Washington State Chapter to assist in designing the Emerald Edge, a sustainable forestry and resource management project in the world’s largest intact temperate rainforest, extending from the Washington Coasts to the Tongass National Forest. Among his many achievements at The Nature Conservancy, Aurelio was given the Conservancy Lesley Freshwater Award in 2011.

Prior to joining the Conservancy, Aurelio worked for the Andean Development Bank CAF, the Biotrade Program of the United Nations Conference of Trade and Commerce, as well as the Humboldt Biological Research Institute. In 2001 he was named one of the top entrepreneurs in Colombia by the financial magazine Revista Dinero for his work in creating a biotrade program in the Andean countries which combined business practices with the sustainable use of biodiversity.

Aurelio earned a Master’s Degree in Environmental Economics and Natural Resources from the University of Maryland and the Universidad de los Andes and received his Bachelor’s Degree in Economics from Colombia’s Universidad de los Andes. He is also a graduate from Armand Hammer United World College as well as attended environmental graduate studies in Oslo University, Norway.

Lynn Scarlett, Managing Director for Public Policy

Lynn Scarlett is the Managing Director for Public Policy at The Nature Conservancy. In this role, she directs policy in the United States and the 35 countries in which the Conservancy operates with a focus on climate and nature-based solutions.

Climate change is one of the world’s most urgent challenges and an immediate risk to our communities, economies, and to our conservation mission. Lynn believes that practical, innovative solutions can create a prosperous, low-carbon future that is cleaner, healthier, and more secure for everyone and that nature-based solutions are an essential component of controlling carbon pollution and protecting against climate impacts.

Most recently, she was the Deputy Secretary and Chief Operating Officer of the U.S. Department of the Interior; Lynn also served at Interior as the Acting Secretary of the Interior in 2006.

While Interior’s Deputy Secretary, Lynn initiated and chaired the Department’s Cooperative Conservation Working Group and the Department’s first-ever Climate Change Task Force. She established the Interior’s Ocean and Coastal Activities office to coordinate cross-departmental ocean and coastal work. She chaired the nation’s Wildland Fire Leadership Council. She served on the Executive Committee of the President’s Management Council.

Lynn is author or co-author of publications on climate change adaptation; ecosystem services; large landscape conservation; and science and decision making.

She chairs the Science Advisory Board of NOAA, co-chairs the Landscape Conservation Cooperatives Council established in 2014 by the U.S. Department of the Interior, and co-chairs the National Academy of Sciences Sustainability Roundtable. She also served on the US Global Change Research Program Committee and is a co-convening lead author of the National Climate Assessment.

She is on the Dean’s Advisory Council of the Bren School of Environmental Science and Management at UC Santa Barbara and on the advisory board of COMPASS. She also serves on the board of trustees of the National Wildlife Refuge Association, is a member of the Coordinating Council of the Practitioners’ Network for Large Landscape Conservation.

Lynn received her Bachelor’s and Master’s degrees in political science from the University of California, Santa Barbara, where she also completed her Ph.D. coursework and exams in political science and political economy.

Heather Tallis, global managing director, lead science office

Heather Tallis is a recognized scientific leader in bringing human well-being considerations into conservation. Previously, Tallis served as the first female lead scientist in the history of the Conservancy. She directed the Human Dimensions Program, an initiative that incorporates ecological, social and economic sciences so that human well-being is integrated into conservation practice from the planning stage forward.

Tallis has developed, planned and executed many innovative research programs at the Conservancy, engaging with field programs and driving organizational change. Her work on the ground is aimed at better understanding and managing key connections between nature and people, from pioneering new science for using watersheds as a key part of water infrastructure for cities, to advancing both the theory and practice of how nature’s benefits can be part of mitigating development impacts. She is currently exploring new areas for conservation, including the connection between nature views and elementary school test scores, connections between time poverty and conservation, and opportunities to address major public health issues through conservation. Tallis co-led the re-design of the Conservancy’s science-based approach to conservation, embedding key human well-being considerations throughout the planning, implementation and evaluation processes.

Prior to joining the Conservancy in 2013, Tallis was lead scientist at the Natural Capital Project, where she led the development of a pioneering software application, InVEST, that reveals the ecosystem services costs and benefits of land and water use decisions.

Tallis has worked with governments, corporations and non-governmental organizations to use science about nature’s benefits to inform a host of policy and planning decisions. She has guided research with diverse stakeholders across the globe and holds leadership and has held expert advisory roles with the World Bank and the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services.

She is a frequent speaker at national and international conferences on these topics. She has published widely in the scientific literature in journals ranging from the Proceedings of the National Academy of Sciences to Ecological Economics. Last year, she led a group of 240 authors in a comment in the journal Nature calling for more inclusive and more diverse conservation – resulting in a petition signed by thousands of scientists all over the world. This is an area she continues to be dedicated to, hosting events and driving research and programs towards shifting the face and focus of conservation.

Tallis holds a Ph.D. in zoology from the University of Washington and Master’s degrees from the University of Otago and University of California, Santa Cruz, where she is now adjunct faculty. She is co-editor of the book Natural Capital: The Theory and Practice of Mapping Ecosystem Services, released by Oxford University Press in 2011.

Mike Tetreault, Chief People Officer

As Chief People Officer, Mike leads a new People Office charged with going beyond traditional human resource functions to diversify, engage, and empower our impressive staff to achieve even greater outcomes. Mike oversees the administrative functions of human resources as well as leadership development, talent mobility, and knowledge management. He serves on the Executive Team.

Mike brings great experience to his new role, along with a deep commitment to helping others learn and grow. He has held a number of leadership positions at TNC over the past 18 years, most recently as State Director of the Maine Chapter since 2004, also serving as Lead Director in Northeastern U.S. since 2010. From 1998 – 2004 he worked in Colorado as the chapter's Yampa River Project Director and Northwest Colorado Program Manager. Mike also led the process to create the North America Division with Brian McPeek, chaired the steering committee for the Conservation by Design refresh in 2015, and was the first sponsor of the Nature's Pride Employee Resource Group.

Mike has an M.S. in Natural History from the University of Vermont, a B.A. in Environmental Studies from Brown University. He lives with his wife, Neera, and daughter, Wren and their myriad pets in Bath, ME.


Peter Wheeler joined The Nature Conservancy as an Executive Vice President in September 2013. He has a long and distinguished career as an investment banker. Until Dec 2010, he was Head of Wholesale Banking, EMEA and Americas for Standard Chartered. Previously, Peter spent fifteen years with Goldman Sachs, initially in New York, then, from 1991, based in Hong Kong, where he established the firm's Investment Banking business for Asia outside of Japan, spending considerable time in India, the People’s Republic of China, South Korea, Indonesia and Singapore. He was the firm’s first Chief Representative in Beijing. He became a partner of the firm in 1994, and returned to the United Kingdom at the end of 1998.

Peter is Chairman of IPValue, a leading business services company that partners with major global companies with deep research commitments to manage their intellectual property commercialization activity. He has served on the supervisory board of Actis, the emerging markets private equity firm, and the board of Climate Change Capital, one of the early innovators among specialist financial service organizations serving the low carbon economy. He is a seed investor in EKO asset management partners, a New York based specialized investment and advisory firm focused on discovering and monetizing unrealized or unrecognized environmental assets. He is an investor in New Forests Company, which operates sustainable forestry concessions in Uganda, Tanzania, Mozambique and Rwanda.

In addition to his business interests, Peter is a co-founder and trustee of New Philanthropy Capital, a charity that advises donors and funders on how to give more effectively through a combination of independent research and tailored advice. He is a Board member of Social Finance, a social enterprise dedicated to the transformation of the third sector’s capabilities by developing access to a range of innovative financing methods. He has served in the recent past on the boards of the Young Foundation, Virgin Unite and Charity Technology Trust. He is a founder of Dasra Social Impact, a Mumbai based project which for the past 7 years has been providing specialist services to developing the skills of leading social entrepreneurs in India. 


Janine Wilkin is currently the Acting Chief Marketing Officer for The Nature Conservancy. Prior to taking on this role in the fall of 2015, she served as Mark Tercek's Chief of Staff from 2008 to November 2016. Janine has served in leadership roles in marketing and philanthropy, including deputy director of philanthropy where she oversaw fundraising in major markets and as director of field resources where she oversaw field marketing as well as several philanthropy support services for the organization. She also serves on an advisory board for Conservation Leadership through Learning, an innovative Master’s level program in development at Colorado State University.

Prior to joining the Conservancy in 2005, Wilkin worked for America Online (AOL) for eight years where she held a variety of marketing and general management positions. Most recently, she was executive director, brand strategy and prior to that she held several leadership roles where she developed business plans to maximize the user-experience as well as drive advertising revenue for strategic content areas on AOL. Prior to AOL, Wilkin worked for nine years at the Time Life division of Time Warner where she held several direct marketing and new product development roles.

Heather Wishik, Chief Diversity and Inclusion Officer

Heather R. Wishik is the Chief Diversity and Inclusion Officer for The Nature Conservancy, overseeing strategies that leverage the diverse backgrounds and experiences of its staff, trustees and other stakeholders to improve conservation outcomes, broaden the constituency for nature, help TNC take a lead in diversifying the conservation movement and strengthen the Conservancy’s engagement with a wide diversity of communities, people and organizations. She previously worked with The Conservancy as lead strategy implementation consultant to the Executive Team Diversity Steering Committee.

Heather has extensive experience as a consultant and coach on diversity and inclusion, global organization development, and leadership development. In almost 20 years of private practice she helped clients on five continents develop and implement global diversity and inclusion strategies using the Leveraging Difference™ approach. She is also an experienced leadership and identity management coach, training designer and group process facilitator.

Since 2001, Heather also has been a Batten Research Fellow at the Darden Graduate School of Business, University of Virginia, where she has collaborated with faculty on global leadership research and the development and writing of teaching cases. Her previous work includes service as Assistant Vice President and Director of Global Diversity and Inclusion for The TJX Companies, Inc., supporting their operations in the UK, Germany, Canada and the USA. She also has taught at the undergraduate and graduate levels at Dartmouth College and Vermont Law School.

With Darden Professor Martin N. Davidson, Heather co-authored three chapters of Davidson’s book “The End of Diversity as We Know It: Why Managing Diversity Efforts Fail and How Leveraging Difference Can Succeed” (Berrett-Koehler, 2011). She is a published theorist and research scholar in the fields of organizational behavior, inclusive leadership and leveraging difference, as well as in women and the law.

Heather earned an Honours degree in Industrial and Organizational Psychology and a Certificate in Group Process Facilitation from the University of South Africa. She has group relations consultation training from the Tavistock Institute, holds a B.A from Goddard College and a J.D. summa cum laude from the University of San Diego School of Law. She has conducted research about trust among peers in teams under the supervision of faculty at University of South Africa.

Heather lived in Karachi, Pakistan as a teenager while her parents consulted to the Ministry of Health. She was a Peace Corps health education trainee in Niger and from 1999-2004 she lived in and operated her consulting practice from Amsterdam, in The Netherlands. She works in English and speaks conversational French and Dutch. Heather currently makes her home with her spouse, Susan Donegan, in Boca Raton, Florida.


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