The chapter addresses whether the critical load of nutrient nitrogen (N) is a relevant, necessary and sufficient indicator to address adverse effects of reactive nitrogen (Nr) on biodiversity in different regions of the world. Based on a description of the critical loads concept for nutrient N, and the relationship to biodiversity endpoints, applications of the critical load for nutrient N are summarized in the context of policies under the Long-range Transboundary Air Pollution (LRTAP) Convention. Potential applications of critical loads are addressed with respect to the relevance of adverse effects of N under the Convention on Biological Diversity (CBD). The chapter considers the prospects for effect-based applications in different regions of the world and poses some questions that need to be addressed. Finally, the potential for a broader indicator for N (a ‘threshold’ rather than a ‘load’) that could apply to all forms and impacts of N is considered, as it could potentially increase the coherence between CLRTAP and CBD.
CITATION STYLE
Hettelingh, J. P., De Vries, W., Posch, M., Reinds, G. J., Slootweg, J., & Hicks, W. K. (2014). Development of the critical loads concept and current and potential applications to different regions of the world. In Nitrogen Deposition, Critical Loads and Biodiversity: Proceedings of the International Nitrogen Initiative Workshop, Linking Experts of the Convention on Long-Range Transboundary Air Pollution and the Convention on Biological Diversity (pp. 281–293). Springer Netherlands. https://doi.org/10.1007/978-94-007-7939-6_30
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