Abstract
With ongoing climate change, the search for indicators
of imminent ecosystem shifts is attracting increasing
attention (e.g., Scheffer et al. 2009). Recently, the spatial
organization of ecosystems has been suggested as a good
candidate for such an indicator in spatially structured
ecosystems (Rietkerk et al. 2004, Ke´fi et al. 2007a,
Guttal and Jayaprakash 2009).