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Scenarios. What are CNS scenarios?. C hanges in N utrient flows into the watersheds Atmospheric deposition Imported food, feed, fertilizer BMP implementation types, location Landscapes alterations
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What are CNS scenarios? • Changes in • Nutrient flows into the watersheds • Atmospheric deposition • Imported food, feed, fertilizer • BMP implementation • types, location • Landscapes alterations • Cropland, pasture land, riparian buffer, urban/suburban intensification or green infrastructure, etc. • Cropping activities • POTW discharges
What will we use them for? • Experimental treatments • Generate data from model simulations and analyses to address objectives related to science & policy questions • Some generated by us • Some generated with stakeholders • Generate insights about how to work with stakeholders to elicit, present, and evaluate scenarios process and tools development objectives
Examples • What are the economic and ecological benefits of spatial targeting of BMPs and land retirement to achieve the Bay TMDL? • Compare “least-cost” set of BMPs located in space to solution to random draws of WIP BMPs • What are the economic and ecological tradeoffs between BMPs, land retirement, reduced external nutrient inputs? • Redo the above with plausible changes in atmospheric deposition or other nutrient imports?
Selecting Scenarios • What are the specific science and policy questions we want to address? • E.g., Change in nutrient flows regionally, or implementation of Bay recommended most efficient BMPs, protection of most sensitive habitats • What are the experimental designs that allow us to address them within the resource and other project constraints? • E.g., Multiple practices with multiple locations make for a huge set of alternatives
Selection strategies • About 6 options maximum per watershed (e.g., H, M, L intensity x 2 spatial configurations) • Possible type criteria (can be used in combo.): • Sort by N, P, S reduction efficiencies • Focus on selected ecosystem services • Sort by cost efficiency • Compatibility with farming systems, perhaps determined by stakeholders • Others???
Approach • Conduct scenarios building workshop with smaller cadre of CNS personnel (June) • Refine scenarios working with Informatics Team • Deliver suggested options to Community Partners Council ahead of Sept. All Hands Mtg. • Discuss responses of CPC at All Hands Mtg. at SERC in Sept. • Implement modeling and assessment of this first set of scenarios on target watersheds