- Nurse plants, tree saplings and grazing pressure: changes in facilitation along a biotic environmental gradientChristian Smit
Department of Biology, Unit of Ecology and Evolution, University of Fribourg, Chemin du Musee 10, 1700 Fribourg, Switzerland
Oecologia 152:265-73. 2007..Empirical studies are needed to test the applicability of this model. In conclusion, we suggest that current conceptual facilitation models should at least consider the possibility of decreasing facilitation at high levels of stress...