Sciencenitrogenenvironmenteutrophicaion science-360-6387-legacy-nitrogen-gulf-mexico. Legacy nitrogen may prevent achievement of water quality goals in the Gulf of Mexico Legacy nitrogen may prevent achievement of water quality goals in the Gulf of Mexico K. … This legacy effect means that a dramatic shift in land-use practices, which may not be compatible with current levels of agricultural production, will be needed to control hypoxia in the Gulf of Mexico. … It has been estimated that a 60% decrease in watershed nitrogen (N) loading may be necessary to adequately reduce eutrophication in the Gulf. By Piero Visconti, et al. Apr 19th, 2019 Previous Next