Silvestrum Climate Associates includes 2 member firms: Silvestrum Climate Associates LLC based in the San Francisco Bay Area, California, USA and Silvestrum based in Europe.

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The Core Team

Silvestrum Climate Associates LLC, USA


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Kris May
Principal, Climate Adaptation and Engineering

Kris May is a coastal engineer and scientist with more than 20 years of experience providing leadership and technical expertise related to coastal and extreme hazard analysis, coastal restoration, and climate change resilience and adaptation strategy development. In addition to her scientific and technical background, Kris has a solid understanding of the policies and guidance in place that are driving climate change adaptation planning. Kris served as a technical advisor supporting the Mayor of San Francisco’s Adaptation Initiative to foster the development of county-wide climate change planning policies. Kris has also lent her unique blend of science, engineering, policy, and visualization techniques on collaborative, multi-agency projects focused on providing San Francisco Bay Area coastal resource and land use managers and planners locally-relevant tools to help them understand, visualize, and anticipate vulnerabilities to sea level rise and storms. Most recently, she served as a key strategy partner for the Rockefeller Foundation’s 100 Resilient Cities effort, leading stakeholder discussions on coastal resilience and sea level rise in support of their 100-City Resiliency Challenge.


Picture Steve

Steve Crooks
Principal, Wetlands Science and Coastal Management

Steve Crooks is a wetland scientist / geomorphologist with 20 years post-PhD experience in the science and practice of wetland restoration. He has served in many roles bridging academia and private sector to deliver scientifically credible and practicable best-practice solutions for coastal management. After working in academic institutes in the UK with climate scientists and economists Steve joined a leading engineering consultancy specialized in ecosystem restoration as a senior geomorphologist. He started their climate change practice. More broadly, Steve has focused on defining best-practice climate mitigation and adaptation strategies. He was a Lead Author of the IPCC 2013 Wetland Supplement. He is a NASA Carbon Monitoring System Principal Investigator, is co-founder of the International Blue Carbon Initiative. He is an author of the Verified Carbon Standard (VCS) Wetland Restoration and Conservation requirements, and a Wetland Expert for the VCS. Steve is a member of the IUCN Species Survival Commissions Mangrove Specialist Group.


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Moritz von Unger
Principal, Climate Policy

Moritz von Unger is a senior policy expert with more than fifteen years of professional experience as an international advisor of governments, business and not-for-profit institutions. He specializes in international environment and climate interventions, with a special focus on land tenure policies, finance and the institutional management of low carbon investments in forests, wetlands and landscape approaches. He has extensive experience in assisting the private sector and governments with land-use based interventions, participatory processes, and institutional country climate transformations. He works both top-down focusing on policy designs, the interaction of national agencies with communities, investors and civil society, and bottom-up focusing on community involvement, program efficiency, revenue distribution and re-investment schemes.
Moritz holds a PhD in international law from the University of Hamburg (Germany) and teaches and publishes regularly. He is fluent English, French, alongside his native German.


Silvestrum, Europe



Igino Emmer
Principal, Carbon Project Development

Igino Emmer holds a PhD in Earth Sciences and has been working in the field of land use and climate change since the early 1990s. He is the founder of the European branch and forerunner of Silvestrum Climate Associates in 2008. He built up experience in the development, management and certification of AFOLU projects in Europe, Southeast Asia, Africa and South America, coordinating work with experts from various environmental, social, economic and legal disciplines, in governmental and non-governmental organisations, and business. He has been a member to the A/R Working Group of the UNFCCC’s CDM Executive Board, the Technical Advisory Group of the VCS AFOLU standard, is a member to the CI/IUCN Blue Carbon Working Group and has been the lead author of the VCS WRC requirements and various AFOLU baseline and monitoring methodologies.


The team at work in West Papua, 2016 – Steve, Igino, Moritz