| http://www.w3.org/ns/prov#value | - veral hypotheses have been proposed to explain variability in the strength of cascades based on factors such as life history, organism size and edibility, productivity, adaptive behaviour, nutrient recycling and non-equilibrium dynamics (Leibold 1989; DeAngelis 1992; Abrams 1993; Chase 1996, 1998, 1999; Polis 1999; Peacor & Werner 2001).
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