Regulation of Lake Primary Productivity by Food Web Structure.

  title={Regulation of Lake Primary Productivity by Food Web Structure.},
  author={Stephen R. Carpenter and James F. Kitchell and James R. Hodgson and Philip A. Cochran and James J. Elser and Monica M. Elser and David M. Lodge and Donald W. Kretchmer and X. He and C. N. von Ende},
  volume={68 6},
We performed whole-lake manipulations of fish populations to test the hypothesis that higher trophic levels regulate zooplankton and phytoplankton community structure, biomass, and primary productivity. The study involved three lakes and spanned 2 yr. Results demonstrated hierarchical control of primary production by abiotic factors and a trophic cascade involving fish predation. In Paul Lake, the reference lake, productivity varied from year to year, illustrating the effects of climatic… 

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