Our ecosystems experts


  • Rudek, Joe Senior Scientist

    Areas of expertise: Agricultural emissions to land, water, and air from livestock, rice and upland crops; methane emissions from natural gas end use; and supply chain sustainability

  • Schwartzman, Steve Senior Director, Tropical Forest Policy

    Areas of expertise: Climate change, tropical forest policy, Reducing Emissions from Deforestation and forest Degradation (REDD), Brazil and the Amazon, indigenous peoples, incentives for environmental protection

    Office: Washington, D.C.

  • Sellers, Scott Habitat and Water Research Associate

    Areas of expertise: California water policy, water conservation, wildlife conservation, water markets, habitat markets, groundwater management

    Office: San Francisco

  • Silleck, Elizabeth Senior Conservation Manager, Gulf of Mexico

    Areas of expertise: Environmental Policy, Marine Conservation, Fisheries Management

  • Spiller, Beia Senior Economist

    Areas of expertise: Transportation, energy demand, shale gas

    Office: New York City

  • Toombs, Ted Conservation Scientist, Ecosystems

    Areas of expertise: Social-ecological systems, environmental psychology, conservation program design and governance, grassland and shrub-land ecology, livestock grazing and wildlife habitat relationships, endangered species, conservation banking and biodiversity metrics

  • Areas of expertise: Ecosystems, rivers and deltas, trial-oriented litigation

    Office: New York City

  • Wolfe, David Director, Conservation Strategies

    Areas of expertise: conservation biology, conservation of at-risk species, working effectively with private landowners, Safe Harbor, Farm Bill

    Office: Austin, Texas

  • Wyerman, Jim Director of Strategic Partnerships and Communications, Mississippi River Delta Restoration

    Areas of expertise: Ecosystems, strategic communications and outreach, nonprofit management, environmental law and policy, natural infrastructure, rivers and deltas

    Office: Washington, D.C.

  • Zaragoza-Watkins, Matthew High Meadows Senior Economist

    Areas of expertise: Electricity, Natural Gas and GHG Market Design; Water Economics; Transportation Economics; Applied Econometrics; Program Evaluation

    Office: Boston