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Tackling legacy nitrogen modeling in highly altered landscapes: status and future directions
Citation:
Golden, H., G. Evenson, J. Christensen, AND C. Lane. Tackling legacy nitrogen modeling in highly altered landscapes: status and future directions. WaterSciCon24, St. Paul, MN, June 24 - 27, 2024.
Impact/Purpose:
Currently, scientists and water managers are relatively ill-equipped to estimate how legacy nitrogen moderates in-stream nitrogen responses to land conservation practices, in part because modeling tools and associated long-term monitoring approaches to answer these questions remain inadequate. In this presentation, we explore the status of nitrogen legacy modeling in anthropogenically impacted landscapes and opportunities to advance the state of the science. We specifically propose ways to strengthen watershed models and modeling approaches to improve future analyses that supports long-term sustainable nitrogen land management across the globe.
Description:
Nitrate levels in many global waterways remain high, despite the widespread implementation of watershed nitrogen reduction programs. Legacy nitrogen is a prominent feature in highly altered watersheds, particularly those in agricultural settings, and is one of several explanations behind this lack of progress. Watershed legacy nitrogen is the long-term retention of nitrogen in soils and groundwater. Currently, scientists and water managers are relatively ill-equipped to estimate how legacy nitrogen moderates in-stream nitrogen responses to land conservation practices, in part because modeling tools and associated long-term monitoring approaches to answer these questions remain inadequate. In this presentation, we explore the status of nitrogen legacy modeling in anthropogenically impacted landscapes and opportunities to advance the state of the science. We specifically propose ways to strengthen watershed models and modeling approaches to improve future analyses that supports long-term sustainable nitrogen land management across the globe.
