PHASE 1: Integrated Ecological Economic Modeling and Valuation of Watersheds.

PHASE 2: Whole watershed health and restoration: applying the Patuxent and Gwynns Falls landscape models to designing a sustainable balance between humans and the rest of nature.

Funding for this research has been provided by the U.S. EPA (in conjunction with the National Science Foundation)

For specific questions about the project please get in touch with


Robert Costanza - PI - strategic ideas, goals and objectives of PLM, ecosystem health and integration.
Alexey Voinov - hydrologic, nutrient and plant modules, spatial implementation of the model, spatial calibration, scenario runs, web-based watershed management.
Roelof Boumans - GEM unit model, modification and calibration of plant sectors, models of human and social development.
Helena Voinov - data acquisiton and processing, spatial data management, GIS support.
Thomas Maxwell - development of the SME software package, including the java-based interface and Simulation Module Markup Language
Ferdinando Villa - software development, procedures for non-spatial calibration, MPI.
Josh Farley - project management, workshops, stakeholder involvement.
Matthew Wilson - survey research methods, ecosystem service valuation and group decisionmaking.