title: Effect of predators and area on invasion: an experiment with island spiders.
abstract: To assay the effect of area and predators on invasion success, spiders were introduced onto islands that were large, with lizard predators; large, without lizard predators; or small, without lizard predators. Short-term survival was greater on islands without than with predators; area had no effect. Spiders initially increased substantially on both groups of islands without lizards, but after 5 years they nearly died off on small islands while persisting on most large islands; populations in the presence of predators never increased above initial sizes. Results show how predators as well as area are important in determining invasion success.
authors.forename: T W
authors.initials: TW
authors.lastname: Schoener
authors.forename: D A
authors.initials: DA
authors.lastname: Spiller