Workshop

An international workshop in collaboration with experts from the Convention on Long-range Transboundary Air Pollution (LRTAP) and the Convention on Biological Diversity (CBD)

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More Details: see website at: http://initrogen.org/144.0.html

Increases in nitrogen (N) deposition in broad areas of Europe and North America, and parts of Asia, over the last 50 years have resulted in losses of plant diversity, shifts in plant communities, changes in ecosystem services and food webs, and other adverse environmental effects. Recent modelling projects increased rates of atmospheric N deposition over the next decades in most regions of the globe. Some parts of the world, such as Europe and Canada, have adopted an effects threshold approach for assessing the impacts of N deposition, known as Critical Loads. N deposition is above or approaching critical loads in parts of Asia, Africa and Latin America. However, shortcomings in several areas currently hamper adoption of the approach and general assessment of nitrogen impacts.

Workshop Goals:

• Assess N deposition estimates at regional to global scales;
• Evaluate N critical loads and their exceedances as suitable tools/indicators;
• Consider options for the assessment of ecosystem responses to N addition in different regions of the world;
• Integrate global scientific knowledge and promote policy and management actions

COST 729 Mid-term Workshop 2009

Nitrogen Deposition and Natura 2000
Science & practice in determining environmental impacts

18-20 May, 2009 Brussels

Goal
To harmonize approaches for determining the impacts of atmospheric nitrogen deposition on Natura 2000 and review the future policy options.

At present there is no common European approach for determining the impacts of nitrogen deposition on individual sites or on conservation status. This provides key challenges for this workshop: to develop best practices in environmental assessment and decision making, and to inform the needs for future policy development. The workshop will compare case studies from different European countries, review the scale of the nitrogen threat to Natura 2000 sites and conservation status, linking the science and decision making at local to European scales.

For registration and more information on the topics and key themes visit the workshop web pages.

The first workshop of this COST Action was held in Braunschweig (21-23 November 2005) and was hosted by the Bundesforschungsanstalt für Landwirtschaft (FAL), one of the members of this COST Action. This workshop was jointly organised with the UNECE Convention on Long-range Transboundary Air Pollution (LRTAP).

General description

Excess nitrogen has effects on a wide range of issues and the environmental policy responses to-date have been equally diverse. Atmospheric emissions of NO_x and their impacts on acidification, eutrophication and ground-level O₃ are being addressed under the Gothenburg Protocol of the UNECE Convention on Long-Range Transboundary Air Pollution, as well as under the EU National Emissions Ceilings Directive (NECD). The agreements now also include the first tentative steps to reduce European NH₃ emissions, mainly from agriculture, and are also beginning to address the abatement of atmospheric aerosol concentrations.

The UN/ECE Taskforce on Integrated Assessment Modelling, COST Action 729 and the ESF Programme NinE jointly organised a workshop on 'Integrated Assessment Modelling of Nitrogen', hosted by the International Institute of Applied Systems Analyses (IIASA) located at Laxenburg (Austria).