6 Biodiversity and Ecosystem Functioning in Grasslands

  title={6 Biodiversity and Ecosystem Functioning in Grasslands},
  author={Osvaldo E. Sala and William K. Lauenroth and Samuel J. McNaughton and Graciela M. Rusch and Xinshi Zhang},
Grasslands are the potential natural ecosystem type on approximately 25% (33x lo6 km2) of the land surface of the earth (Shantz 1954). Current estimates of the global extent of grasslands range from 16% (Whittaker and Likens 1973, 1975) to 30% (Ajtay et al. 1979). The difference between the estimates of the potential extent of grasslands and the current extent provides an indication of the degree to which humans have, and are, modifying this ecosystem type. In the temperate regions much of the… CONTINUE READING
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