Biological Nitrogen Fixation Prevents the Response of a Eutrophic Lake to Reduced Loading of Nitrogen: Evidence from a 46-Year Whole-Lake Experiment

  title={Biological Nitrogen Fixation Prevents the Response of a Eutrophic Lake to Reduced Loading of Nitrogen: Evidence from a 46-Year Whole-Lake Experiment},
  author={Scott N. Higgins and Michael J. Paterson and Robert E. Hecky and David W. Schindler and Jason J. Venkiteswaran and David L. FindlayD.L. Findlay},
AbstractA whole-ecosystem experiment in Lake 227 (L227) at the Experimental Lakes Area, ongoing since 1969, examined the roles of carbon (C), nitrogen (N), and phosphorus (P) in controlling eutrophication. During 2011, we conducted a series of sub-experiments and more intensive monitoring to improve estimates of N fixation and its ability to meet algal growth demands in the decades following the cessation of artificial N loading, while maintaining long-term high artificial P loading… 

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Comment: Lake 227 shows clearly that controlling inputs of nitrogen will not reduce or prevent eutrophication of lakes

The conclusion from our earlier paper, that decreasing nitrogen (N) inputs to lakes does not substantially reduce symptoms of eutrophication (Schindler et al. 2008), was recently challenged by Scott