Nutrient limitation of phytoplankton growth in aquatic systems is moving towards a higher incidence of P and Si limitation as a result of increased nitrogen loading, a N:P fertilizer use of 26:1 (molar basis), population growth, and relatively stable silicate loading. This result will likely alter phytoplankton community composition, and may compromise diatom-->zooplankton-->fish food webs.
Future aquatic nutrient limitations. - ResearchGate. Available from: http://www.researchgate.net/publication/10623162_Future_aquatic_nutrient_limitations [accessed May 30, 2015].