Session Details
Oral [STS3]-2nd
Tue. Nov 3, 2026 10:50 AM - 12:20 PM JST
Tue. Nov 3, 2026 1:50 AM - 3:20 AM UTC
Tue. Nov 3, 2026 1:50 AM - 3:20 AM UTC
Room104(1st Floor)
Part 2: Linking Nitrogen Footprints, Efficiency, and Budgets to Policy and Consumer Action
Part 2 of this session explores two questions: how nitrogen footprints, nitrogen use efficiency (NUE), national nitrogen budgets and related metrics can complement one another while retaining their respective strengths; and how these metrics can be translated into action. In particular, we ask how production-level information can be linked to consumer-oriented interventions, policy instruments, and practical decision support in ways that reduce nitrogen losses and remain usable in practice. Across the contributions, we also consider how the causes and drivers of nitrogen losses can be connected with their impacts across farms, supply chains, trade and national systems.
Session materials and audience participation
Position papers, key claims, and background information on nitrogen metrics are available here:
https://jgserra18.github.io/N2026_nutrients2action/
During the session, please use the same page to access Mentimeter, vote on discussion topics, and submit questions to the panel.
Programme
10:50–10:52 — Introduction
Azusa Oita
10:52–11:37 — Five registered STS3-2nd oral presentations (7-min presentation + 2-min Q&A each)
10:52–11:01 — [STS3-O006] Jacques Louis Vos — The Danish N-Footprint: The Cost of Consumption and the Nᵣ Conundrum Beyond Borders
11:01–11:10 — [STS3-O007] Berent T. Baris — My-N-Print: A globally harmonized, top-down nitrogen footprint calculator for food and energy choices across 181 countries
11:10–11:19 — [STS3-O008] Azusa Oita — Incorporating production-side variability into nitrogen footprints: linking process models with a life-cycle-oriented assessment framework
11:19–11:28 — [STS3-O009] João Serra — Re-imagining how national NUE is calculated and interpreted
11:28–11:37 — [STS3-O010] Troy Baisden — From budgets to barriers and backlash: learning from New Zealand’s difficulties implementing limits on reactive nitrogen
11:37–11:40 — Transition to the panel
11:40–11:48 — Four flash talks (2 min each)
11:40–11:42 — Wilfried Winiwarter — Nitrogen efficiencies in a national nitrogen budget perspective
11:42–11:44 — Miguel Quemada — Complementing nitrogen use efficiency with fertilizer dependency
11:44–11:46 — Ming-Chien Su — Nitrogen Management: Opportunities for Taiwan’s Net-Zero Transition
11:46–11:48 — Morten Graversgaard — From nitrogen metrics to decisions: building the implementation architecture for action
11:48–12:20 — Moderated panel discussion
Moderator: Troy Baisden
Panelists: Jacques Louis Vos, Azusa Oita, Wilfried Winiwarter, Miguel Quemada, Ming-Chien Su, and Morten Graversgaard
Part 2 of this session explores two questions: how nitrogen footprints, nitrogen use efficiency (NUE), national nitrogen budgets and related metrics can complement one another while retaining their respective strengths; and how these metrics can be translated into action. In particular, we ask how production-level information can be linked to consumer-oriented interventions, policy instruments, and practical decision support in ways that reduce nitrogen losses and remain usable in practice. Across the contributions, we also consider how the causes and drivers of nitrogen losses can be connected with their impacts across farms, supply chains, trade and national systems.
Session materials and audience participation
Position papers, key claims, and background information on nitrogen metrics are available here:
https://jgserra18.github.io/N2026_nutrients2action/
During the session, please use the same page to access Mentimeter, vote on discussion topics, and submit questions to the panel.
Programme
10:50–10:52 — Introduction
Azusa Oita
10:52–11:37 — Five registered STS3-2nd oral presentations (7-min presentation + 2-min Q&A each)
10:52–11:01 — [STS3-O006] Jacques Louis Vos — The Danish N-Footprint: The Cost of Consumption and the Nᵣ Conundrum Beyond Borders
11:01–11:10 — [STS3-O007] Berent T. Baris — My-N-Print: A globally harmonized, top-down nitrogen footprint calculator for food and energy choices across 181 countries
11:10–11:19 — [STS3-O008] Azusa Oita — Incorporating production-side variability into nitrogen footprints: linking process models with a life-cycle-oriented assessment framework
11:19–11:28 — [STS3-O009] João Serra — Re-imagining how national NUE is calculated and interpreted
11:28–11:37 — [STS3-O010] Troy Baisden — From budgets to barriers and backlash: learning from New Zealand’s difficulties implementing limits on reactive nitrogen
11:37–11:40 — Transition to the panel
11:40–11:48 — Four flash talks (2 min each)
11:40–11:42 — Wilfried Winiwarter — Nitrogen efficiencies in a national nitrogen budget perspective
11:42–11:44 — Miguel Quemada — Complementing nitrogen use efficiency with fertilizer dependency
11:44–11:46 — Ming-Chien Su — Nitrogen Management: Opportunities for Taiwan’s Net-Zero Transition
11:46–11:48 — Morten Graversgaard — From nitrogen metrics to decisions: building the implementation architecture for action
11:48–12:20 — Moderated panel discussion
Moderator: Troy Baisden
Panelists: Jacques Louis Vos, Azusa Oita, Wilfried Winiwarter, Miguel Quemada, Ming-Chien Su, and Morten Graversgaard
[STS3-O006]The Danish N-Footprint: The Cost of Consumption and the Reactive Nitrogen Conundrum Beyond Borders
*Jacques Louis Vos1, Tommy Dalgaard1, Morten Graversgaard1 (1. Aarhus University Department of Agroecology (Denmark))
[STS3-O007]My-N-Print: A globally harmonized, top-down nitrogen footprint calculator for food and energy choices across 181 countries
*Berent Tevfik Baris1, Jan Willem Erisman1, David A. Crowe2, Allison Leach3, Albert Bleeker4, James N. Galloway4 (1. Leiden University (Netherlands), 2. University of Virginia (USA), 3. World Resources Institute (USA), 4. Rijksinstituut voor Volksgezondheid en Milieu (RIVM) (Netherlands))
[STS3-O008]Incorporating production-side variability into nitrogen footprints: linking process models with a life-cycle-oriented assessment framework
*Azusa Oita1,2,3, Nobuko Katayanagi1, Ryosuke Ogino4, Kathrin Grahmann2, Yo Toma5, Sonoko Dorothea Bellingrath-Kimura2 (1. National Agriculture and Food Research Organization (NARO) (Japan), 2. Leibniz-Centre for Agricultural Landscape Research (ZALF) (Germany), 3. Research Institute for Humanity and Nature (RIHN) (Japan), 4. Graduate School of Agriculture, Hokkaido University (Japan), 5. Research Faculty of Agriculture, Hokkaido University (Japan))
[STS3-O009]Re-imagining how national NUE is calculated and interpreted
*João Serra1,2 (1. Center for Landscape Research in Sustainable Agricultural Futures (Land-CRAFT), Aarhus University, Ny Munkegade 114, DK-8000, Aarhus C, Denmark (Denmark), 2. Department of Agroecology, Aarhus University, Blichers Allé 20, 8830, Tjele, Denmark (Denmark))
[STS3-O010]From budgets to barriers and backlash: learning from New Zealand’s difficulties implementing limits on reactive nitrogen
*W Troy Baisden1,2 (1. Motu Research (New Zealand), 2. Victoria University of Wellington (New Zealand))