Testing the role of biotic stress in the stress gradient hypothesis. Processes and patterns in arid rangelands

@article{Graff2011TestingTR,
  title={Testing the role of biotic stress in the stress gradient hypothesis. Processes and patterns in arid rangelands},
  author={P. Graff and M. Aguiar},
  journal={Oikos},
  year={2011},
  volume={120},
  pages={1023-1030}
}
Since many arid ecosystems are overstocked with domestic herbivores, biotic stress could have a stronger influence in modulating the balance of species interactions than expected from the stress gradient hypothesis (SGH). Here we tested a priori predictions about the effect of grazing on species interactions and fine scale spatial structure of grasses in water-limited ecosystems. We used detailed vegetation mapping and spatial analysis, and performed a field experiment where the direct and… Expand
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