Workshop on Nitrogen Deposition, Critical Loads and Biodiversity, 16-18th November 2009, in Edinburgh, UK

Tuesday, November 16, 2010 - 14:00 to Thursday, November 18, 2010 - 14:00

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.
Key Issues

Significant uncertainty in total deposition estimates around the globe;
Uncertainty about the relation between biodiversity loss, N (dynamics) and critical loads;
Lack of field-based evidence for biodiversity effects;
Indicators of biodiversity loss in areas that have exceeded critical N loads;
Accounting for impacts of N addition on ecosystem services and climate change interactions.

For more information see here (