Primary production required to sustain global fisheries

@article{Pauly1995PrimaryPR,
  title={Primary production required to sustain global fisheries},
  author={Daniel Pauly and Villy Christensen},
  journal={Nature},
  year={1995},
  volume={374},
  pages={255-257}
}
THE mean of reported annual world fisheries catches for 1988-1991 (94.3 million t) was split into 39 species groups, to which fractional trophic levels, ranging from 1.0 (edible algae) to 4.2 (tunas), were assigned, based on 48 published trophic models, providing a global coverage of six major aquatic ecosystem types. The primary production required to sustain each group of species was then computed based on a mean energy transfer efficiency between trophic levels of 10%, a value that was… 

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