Schoener, Thomas W.Losos, JonathanSpiller, David A.2009-03-152005Schoener, Thomas W., Jonathan B. Losos, and David A. Spiller. 2005. Island biogeography of populations: An introduced species transforms survival patterns. Science 310(5755): 1807-1809.0036-8075http://nrs.harvard.edu/urn-3:HUL.InstRepos:2664303Population phenomena; which provide much of the underlying basis for the theoretical structure of island biogeography, have received little direct study. We determined a key population trait-survival-in the Bahamian lizard <i>Anolis sagrei</i> on islands with an experimentally introduced predatory lizard and on neighboring unmanipulated islands. On unmanipulated islands, survival declined with several variables, most notably vegetation height: The island with the shortest vegetation had nearly the highest survival recorded for any lizard. On islands with, the introduced predator, which forages mostly on the ground, <i>A. sagrei</i> shifted to taller vegetation; unlike on unmanipulated islands, its survival was very low on islands with the shortest vegetation but was higher on the others. Thus, species introduction radically changed a resident species' relation of survival to a key island-biogeogriphical variable.en-US10.1126/science.1120165