Global patterns in human consumption of net primary production

@article{Imhoff2004GlobalPI,
  title={Global patterns in human consumption of net primary production},
  author={Marc L. Imhoff and Lahouari Bounoua and Taylor H. Ricketts and Colby J. Loucks and Robert Harriss and William T. Lawrence},
  journal={Nature},
  year={2004},
  volume={429},
  pages={870-873}
}
The human population and its consumption profoundly affect the Earth's ecosystems. A particularly compelling measure of humanity's cumulative impact is the fraction of the planet's net primary production that we appropriate for our own use. Net primary production—the net amount of solar energy converted to plant organic matter through photosynthesis—can be measured in units of elemental carbon and represents the primary food energy source for the world's ecosystems. Human appropriation of net… 
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