Visitation rates to the Apostle Islands National Lakeshore and the introduction of the non-native species Lymantria dispar (L.)This article is part of a larger document. View the larger document here.
The introduction of non-native species has accelerated due to increasing levels of global trade and travel, threatening the composition and function of ecosystems. Upon arrival and successful establishment, biological invaders begin to spread and often do so with considerable assistance from humans. Recreational areas can be especially prone to the problem of accidental non-native species transport given the number of visitors that arrive from geographically diverse areas.