The 3rd BONUS symposium will present results from four BONUS projects ending in 2018: BONUS BALTICAPP, BONUS GO4BALTIC, BONUS MIRACLE and BONUS SOILS2SEA which are of interest for policy makers, stakeholders and scientists.

Examples of issues of particular interests for policy makers and stakeholders include:
• How changes in climate and land use are likely to affect future nutrient loads and ecosystem services, including compliance with HELCOM goals
• Are there synergies or conflicts between climate, nutrient and agricultural policies, and how can coherence be achieved?
• How will future developments of the agricultural sector affect the implementation of the policy objectives?
• How is the implementation of agri-environmental measures and the uptake of subsidy schemes by farmers affected by regulation, economic conditions (including investment possibilities) and other factors in the countries around the Baltic Sea?
• What is the technical and economic effectiveness of mitigation measures, including new approaches?
• Is trade mechanisms an effective instrument to allocate nutrients among farmers and regions?
• How can research results feed into advise and suggestions for more efficient and cost-efficient nutrient and climate policies?
• What are stakeholder views on existing and new governance concepts

Issues of particular interest for scientists include:
• Overview and examples of improved data and tools for agro-hydrological modelling of the flow, transport and fate of nutrients from hillslope to Baltic Sea Basin scale
• Improved linkages between economic and hydrological catchment models, used in scenario analyses of agricultural and environmental policy changes
• Overview of new data and analyses of farmers’ preferences for agri-environmental contracts and investments in technologies
• New approaches for combining stakeholder analysis at local and regional scales.
• New approaches for developing scenarios following the Shares Socio-economic Pathway approach
• New models for assessing how changes in land use will materialise under different climate and socio-economic assumptions
• New methods for analysing impacts of agricultural management scenarios.
• Modelling and analysis of technology diffusion and innovation
• Modelling of trade mechanisms for allocation of nutrients and animal manure