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About Us

The People in Ecosystems/Watershed Integration (PEWI) tool is a simple web-based educational game designed to assist people in multidimensional land-use decision making. PEWI is an open-source project that can be utilized in classrooms and by land-managers or resource professionals to explore how different land cover types and configurations result in trade-offs in ecosystem services.  

To learn more about how to use PEWI, watch this brief video tutorial (1.5 min), this more comprehensive video tutorial (4 min), or download the PEWI User Guide.

To use the tool, click here.

Questions about PEWI? Email pewi@iastate.edu.

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What's Next?

Over time we will continue to develop PEWI to improve features, design, and usability. In the future, we envision expanding PEWI even further—potentially with more land covers and indicators, additional complexities, other land-use contexts, and more interactive graphics. Our vision includes incorporating ecosystem services indicators, such as nutritional value of food produced and energy produced from biomass. The possibilities for PEWI are endless, and feedback from PEWI users will be an instrumental part of future development efforts.

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Objectives

PEWI, or People in Ecosystems/Watershed Integration, is a simple web-based learning tool to help people understand human-landscape interactions and ecosystem service tradeoffs. PEWI addresses our need to balance agricultural production with other environmental benefits, including clean water, abundant wildlife, and recreation, among others. While PEWI focuses on the US Corn Belt, its lessons can apply to agricultural regions globally. 

To ensure the constant improvement and widespread availability of PEWI, we have made the tool open source and offer multiple opportunities to collaborate.  To learn more about how to contribute to the science or code that drives PEWI, visit our Collaborate page.  To download lesson plans that incorporate PEWI, visit our Lesson Plans library. Email pewi@iastate.edu with questions and feedback for the development team.

 

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PEWI Science Model Diagram

We created an interactive, expandable tree diagram of PEWI’s science model for users to explore the components of all seven science modules. By navigating to the science model webpage, you can click on any node to expand the model out to increasing levels of detail. For example, the nitrate-nitrogen concentration module contains four subcomponents:conservation practices, row crop area, precipitation, and strategic wetlands.

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Thank You to Our Funders!

The development of PEWI has been funded through grants from The McKnight Foundation, Iowa State University Department of Agronomy, USDA McIntire-Stennis Program (IOW5354), US Forest Service Northern Research Station, and Leopold Center for Sustainable Agriculture. We would not be able to provide PEWI without their generous support. Thank you!

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