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Published online by Cambridge University Press: 25 September 2014
The previous articles have shown that preoccupations concerning discharge of nitrate emissions are not recent, even if they have not yet resulted in expected reductions. The Water Framework Directive, which aims at a ‘good’ ecological state of all aquatic environments in 2015, enlarges the objectives of the Nitrates Directive. We are currently witnessing the broadening of objectives for reducing emissions of all forms of nitrogen from livestock farming systems to other compartments, in particular the atmosphere. The reduction of ammonia emissions, which was a little concerned by the French context until now, is a priority for animal systems in several northern European countries. It is a subject of intense efforts of international regulations.