M Scheffer 2001 + Folke 2004: ecosystems exhibit hysteretic regime-shifts; lake eutrophication + coral-reef bleaching; early-warning critical-slowing-down indicators.
M Scheffer 2001 + Folke 2004: ecosystems exhibit hysteretic regime-shifts; lake eutrophication + coral-reef bleaching; early-warning critical-slowing-down indicators.