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About Us

Overview is a global information clearinghouse for biodiversity offsetting, compensation and offset banking. Until now, there has been no centralized information resource to reliably serve the policy makers, investors, buyers, sellers, and other participants in these biodiversity markets.  We aim to provide a comprehensive answer to the question ‘What is happening in biodiversity offset and compensation programs around the world?’ By filling this critical information gap we hope to enable more efficient, transparent, and equitable conservation markets to develop. provides information at two levels: at the Program level and at the level of individual biodiversity Banks.

  • Program indicates any law, policy or program that drives biodiversity offsetting, compensation or offset banking for impacts to biodiversity.
  • Bank indicates a site, or suite of sites, where biodiversity is restored, established, enhanced and/or preserved for the purpose generating certified credits that may be sold for compensatory mitigation for impacts to biodiversity. will serve as a platform to enable all biodiversity market participants to make more informed decisions, learn from the experiences of others, and ultimately allow stable, equitable and effective conservation markets to develop. Policy-makers and regulators can compare information on a variety of programs across the globe, and academics and others can monitor and analyze industry trends.

This site also serves as a platform for biodiversity bank owners to publicize credit availability, credit buyers to find solutions to their mitigation needs, and prospective bank developers to research current market conditions. A comprehensive and current listing of banks and their credit information allows buyers and sellers to conduct transactions at a reduced cost. And our independent analysis and reporting let market participants to stay on top of industry developments and learn from the experiences of others. The ultimate goal of is to facilitate biodiversity offsets, compensation, and banking as an effective tool for the conservation of threatened and endangered species and their habitat. initially focused on conservation banking of endangered species in the United States. As initiatives have developed in other countries, we have expanded our coverage to include these programs and provide insights for all involved.

While we've striven to make this site as accurate as possible, we are aware that there may be corrections or edits necessary in regards to program and bank information. We hope our readers will contribute to increased transparency by contacting us at info[at]

Where We Come From was created by the Ecosystem Marketplace, a project of Forest Trends. Ecosystem Marketplace is a leading source of news, data, and analytics on markets and payments for ecosystem services (such as water quality, carbon sequestration, and biodiversity). We believe that by making accessible information on policy, finance, regulation, science, business, and other market-relevant factors, markets for ecosystem services will one day become a fundamental part of our economic system, helping give value to environmental services that, for too long, have been taken for granted. In providing free reliable market information, we hope not only to facilitate transactions (thereby lowering transaction costs), but also to catalyze new thinking, spur the development of new markets and the infrastructure that supports them, and achieve effective and equitable nature conservation.

Markets depend on transparent and reliable information to function. What is true for investors on Wall Street is equally true for environmental market players trading in carbon, water quality, and biodiversity.

Unfortunately, obtaining information for these markets can sometimes be exceedingly difficult. In many ways they resemble the Wall Street of the 1800s – with information closely guarded by those who profit from it – rather than the stock markets of today. But markets grow and evolve, and they do so, in part, because of the transformative power of reliable and transparent information. Providing such information is the role of Ecosystem Marketplace.


Biodiversity offset - Biodiversity offsets are measurable conservation outcomes resulting from actions designed to compensate for significant residual adverse biodiversity impacts arising from project development after appropriate prevention and mitigation measures have been taken. The goal of biodiversity offsets is to achieve no net loss and preferably a net gain of biodiversity on the ground with respect to species composition, habitat structure and ecosystem function and people’s use and cultural values associated with biodiversity.

Compensation - in general, a recompense for some loss or service, and is something which constitutes an equivalent to make good the lack or variation of something else. It can involve something (such as money) given or received as payment or reparation (as for a service or loss or injury). Specifically, in terms of biodiversity, compensation involves measures to restore, create, enhance, or avoid loss or degradation of a community type, in order to compensate for residual impacts on it and / or its associated species. We use the term compensation fund to indicate a third-party mechanism that collects and administers fees from developers to offset their impacts to biodiversity. The money may go directly towards compensating biodiversity loss, or to more indirect biodiversity-related projects (i.e. funding protected area management, research).

Banking - indicates a system that allows restoration, establishment, enhancement and/or preservation of resources (e.g., wetlands, species, native vegetation) for the purpose of providing compensatory mitigation for impacts to biodiversity. In general, a banking system allows a bank owner to sell compensatory mitigation credits to developers whose obligation to provide compensatory mitigation is then transferred to the mitigation bank sponsor.

Key Staff

Katherine Hamilton - Director, Ecosystem Marketplace

Tel. - 202-298-2007   |   Email - khamilton (at)

Katherine is the Managing Director of Forest Trends' Ecosystem Marketplace. At Ecosystem Marketplace, she has authored numerous pieces on carbon and water markets, as well as co-authored the book Voluntary Carbon Markets and three annual State of the Voluntary Carbon Markets reports. Before joining Ecosystem Marketplace, Katherine worked as a Hixon Center for Urban Ecology Fellow with the United Nations Development Program-Latin America/Caribbean and as a lead research assistant at the Yale Environmental Law and Policy Center. She has also held positions with Natural Capitalism Inc. in Boulder, Colorado, the International Council for Science in Paris, France, and teaching outdoor environmental education. Katherine holds a Master of Environmental Management degree from Yale University and Bachelor's degree from the University of Michigan.

Nathaniel Carroll - Director, Ecosystem Marketplace - Biodiversity

Tel. - 202-446-1981   |   Email - ncarroll (at)

Nathaniel is Director of Biodiversity Program, Ecosystem Marketplace. He has helped develop the biodiversity market program, co-authoring the book Conservation and Biodiversity Banking, and spearheading the design and launch of Nathaniel currently directs the development of market-crosscutting projects for Ecosystem Marketplace, including the Ecosystem Services Matrix and MarketWatch, which help stakeholders understand the shape, relationship, and scope of ecosystem markets. In addition to his work with Ecosystem Marketplace, Nathaniel has worked with Forest Trends’ Business Development Facility and consulted to several eco-asset investment groups. Before joining Forest Trends, Nathaniel worked with a private forestry and real estate company in Panama, channeling private investment to restore degraded lands. Nathaniel spent two years with Conservation International's Rapid Assessment Program and Conservation Tools Program. He has experience conducting ecological research, from the Rocky Mountains to Andes, from the Northwest Hawaiian Islands to the Penobscot Bay. Nathaniel holds a Bachelor of Science from Tufts University and a Master's in Forest Science from Yale University.

Becca Madsen - Program Manager, Ecosystem Marketplace - Biodiversity

Tel. - 202-446-1976   |   Email - bmadsen (at)

Becca is the Biodiversity Program Manager of Forest Trends' Ecosystem Marketplace. Becca has led maintenance, updates, and the expansion of as well as the development of the State of Biodiversity Marketsreport. Prior to joining Ecosystem Marketplace, she was a Presidential Management Fellow with the US Forest Service, informing mitigation banking business proposals while on loan to Environmental Banc & Exchange and analyzing demand for water-quality trading. Becca completed a Master of Environmental Management from Duke University, where she was selected as a Doris Duke Conservation Fellow. Before attending graduate school, she served as a small business volunteer with the Peace Corps in Mali and worked on water quality and land conservation issues in city government in Texas.

Ben Dappen - IT & Design Associate

Tel. - 202-298-2010   |   Email - bdappen (at)

Ben has worked with Forest Trends since November 2000 as Webmaster and IT Associate, and also provides design and publishing support. He also serves as a web developer for a number of Forest Trends' partners, including the Rights and Resources Initiative (RRI) and Ecoagriculture Partners. Ben graduated from Reed College in 2004 with a History degree.

Daniel Kandy - Research Fellow, Ecosystem Marketplace - Biodiversity and Forest Carbon

Tel. - 202-446-1973   |   Email - dkandy (at)

Daniel is a Research Fellow at Ecosystem Marketplace, providing research and administrative support the Biodiversity Markets Program and Forest Carbon Program. He graduated from Washington University in St. Louis in 2009 with a Bachelor of Arts in Cultural Anthropology, focusing on agriculture and the environment. He has experience conducting ethnographic field work and using GIS to examine land-use changes in both urban and rural environments. Daniel has also worked for the Worldwatch Institute, researching sustainable agriculture. 

Contact Us

Ecosystem Marketplace
1050 Potomac St NW
Washington, DC  20007
Tel: 202.298.3000
Email: info (at)