Senior Research Scientist, Stanford Woods Institute for the Environment
Academic Research Staff, Woods Research Natural Capital Project
- Trade-offs between efficiency, equality and equity in restoration for flood protection ENVIRONMENTAL RESEARCH LETTERS 2022; 17 (1)
- Including Additional Pollutants into an Integrated Assessment Model for Estimating Nonmarket Benefits from Water Quality UNIV WISCONSIN PRESS. 2020: 457–77
- Increasing decision relevance of ecosystem service science NATURE SUSTAINABILITY 2020
- Shaping Land Use Change and Ecosystem Restoration in a Water-Stressed Agricultural Landscape to Achieve Multiple Benefits FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2020; 4
Global modeling of nature's contributions to people.
Science (New York, N.Y.)
2019; 366 (6462): 255–58
The magnitude and pace of global change demand rapid assessment of nature and its contributions to people. We present a fine-scale global modeling of current status and future scenarios for several contributions: water quality regulation, coastal risk reduction, and crop pollination. We find that where people's needs for nature are now greatest, nature's ability to meet those needs is declining. Up to 5 billion people face higher water pollution and insufficient pollination for nutrition under future scenarios of land use and climate change, particularly in Africa and South Asia. Hundreds of millions of people face heightened coastal risk across Africa, Eurasia, and the Americas. Continued loss of nature poses severe threats, yet these can be reduced 3- to 10-fold under a sustainable development scenario.
View details for DOI 10.1126/science.aaw3372
View details for PubMedID 31601772
INTEGRATING ENVIRONMENTAL AND SOCIAL IMPACTS WITH ECOSYSTEM SERVICES ANALYSIS
ROUTLEDGE HANDBOOK OF THE RESOURCE NEXUS
View details for Web of Science ID 000467330600011
Opportunities for natural infrastructure to improve urban water security in Latin America.
2018; 13 (12): e0209470
Governments, development banks, corporations, and nonprofits are increasingly considering the potential contribution of watershed conservation activities to secure clean water for cities and to reduce flood risk. These organizations, however, often lack decision-relevant, initial screening information across multiple cities to identify which specific city-watershed combinations present not only water-related risks but also potentially attractive opportunities for mitigation via natural infrastructure approaches. To address this need, this paper presents a novel methodology for a continental assessment of the potential for watershed conservation activities to improve surface drinking water quality and mitigate riverine and stormwater flood risks in 70 major cities across Latin America. We used publicly available geospatial data to analyze 887 associated watersheds. Water quality metrics assessed the potential for agricultural practices, afforestation, riparian buffers, and forest conservation to mitigate sediment and phosphorus loads. Flood reduction metrics analyzed the role of increasing infiltration, restoring riparian wetlands, and reducing connected impervious surface to mitigate riverine and stormwater floods for exposed urban populations. Cities were then categorized based on relative opportunity potential to reduce identified risks through watershed conservation activities. We find high opportunities for watershed activities to mitigate at least one of the risks in 42 cities, potentially benefiting 96 million people or around 60% of the urbanites living in the 70 largest cities in Latin America. We estimate water quality could be improved for 72 million people in 27 cities, riverine flood risk mitigated for 5 million people in 13 cities, and stormwater flooding mitigated for 44 million people in 14 cities. We identified five cities with the potential to simultaneously enhance water quality and mitigate flood risks, and in contrast, six cities where conservation efforts are unlikely to meaningfully mitigate either risk. Institutions investing in natural infrastructure to improve water security in Latin America can maximize their impact by focusing on specific watershed conservation activities either for cleaner drinking water or flood mitigation in cities identified in our analysis where these interventions are most likely to reduce risk.
View details for PubMedID 30576371
- Mainstreaming investments in watershed services to enhance water security: Barriers and opportunities ENVIRONMENTAL SCIENCE & POLICY 2017; 75: 19–27
Valuing investments in sustainable land management in the Upper Tana River basin, Kenya.
Journal of environmental management
We analyze the impacts of investments in sustainable land use practices on ecosystem services in the Upper Tana basin, Kenya. This work supports implementation of the Upper Tana-Nairobi Water Fund, a public-private partnership to safeguard ecosystem service provision and food security. We apply an integrated modelling framework, building on local knowledge and previous field- and model-based studies, to link biophysical landscape changes at high temporal and spatial resolution to economic benefits for key actors in the basin. The primary contribution of this study is that it a) presents a comprehensive analysis for targeting interventions that takes into account stakeholder preferences, local environmental and socio-economic conditions, b) relies on detailed, process-based, biophysical models to demonstrate the biophysical return on those investments for a practical, decision-driven case, and c) in close collaboration with downstream water users, links those biophysical outputs to monetary metrics, including: reduced water treatment costs, increased hydropower production, and crop yield benefits for agricultural producers in the conservation area. This study highlights the benefits and trade-offs that come with conducting participatory research as part of a stakeholder engagement process: while results are more likely to be decision-relevant within the local context, navigating stakeholder expectations and data limitations present ongoing challenges.
View details for DOI 10.1016/j.jenvman.2016.10.013
View details for PubMedID 27815005
- OPAL: An open-source software tool for integrating biodiversity and ecosystem services into impact assessment and mitigation decisions ENVIRONMENTAL MODELLING & SOFTWARE 2016; 84: 121-133
- Managing forest ecosystem services for hydropower production ENVIRONMENTAL SCIENCE & POLICY 2016; 61: 221-229
- One size does not fit all: Natural infrastructure investments within the Latin American Water Funds Partnership ECOSYSTEM SERVICES 2016; 17: 217-236
- Who loses? Tracking ecosystem service redistribution from road development and mitigation in the Peruvian Amazon FRONTIERS IN ECOLOGY AND THE ENVIRONMENT 2015; 13 (6): 309-315
Process matters: a framework for conducting decision-relevant assessments of ecosystem services
International Journal of Biodiversity Science, Ecosystem Services & Management
2014; 11 (3): 190–204
View details for DOI 10.1080/21513732.2014.966149
- Ecosystem services research in Latin America: The state of the art ECOSYSTEM SERVICES 2012; 2: 56-70