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Nurse plants, tree saplings and grazing pressure: changes in facilitation along a biotic environmental gradient

Smit, Christian ; Vandenberghe, Charlotte ; Ouden, Jan den ; Müller-Schärer, Heinz

In: Oecologia, 2007, vol. 152, no. 2, p. 265-273

Current conceptual models predict that an increase in stress shifts interactions between plants from competitive to facilitative; hence, facilitation is expected to gain in ecological importance with increasing stress. Little is known about how facilitative interactions between plants change with increasing biotic stress, such as that incurred by consumer pressure or herbivory (i.e....