title: Abrupt global shifts in ecosystem states.
authors.affiliation: Department of Geology and Geophysics and Program in Ecology and Evolutionary Biology, Texas A&M University, College Station, TX 77843-3115 olszewski@geos.tamu.edu.
authors.forename: Thomas D
authors.initials: TD
authors.lastname: Olszewski
mesh_terms: D000818:Animals; D004463:Ecology; D053476:Extinction, Biological; D008974:Mollusca