Determinants of species richness in the Park Grass Experiment.

  title={Determinants of species richness in the Park Grass Experiment.},
  author={Michael J. Crawley and A E Johnny Johnston and Jonathan Silvertown and Mark Dodd and Claire de Mazancourt and M S Heard and D F Henman and Grant R. Edwards},
  journal={The American naturalist},
  volume={165 2},
The Park Grass Experiment at Rothamsted in southeast England was started in 1856, making it the longest-running experiment in plant ecology anywhere in the world. Experimental inputs include a range of fertilizers (nitrogen, phosphorus, potassium, and organic manures) applied annually, with lime applied occasionally, and these have led to an increase in biomass and, where nitrogen was applied in the form of ammonium sulfate, to substantial decreases in soil pH. The number of species per plot… CONTINUE READING
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