Key concepts and research topics in landscape ecology revisited: 30 years after the Allerton Park workshop

This year marks the 30th anniversary of a momentous meeting in the history of landscape ecology-the Landscape Ecology Workshop held in Allerton Park, Illinois, USA in 1983. On this special occasion, I am inspired to make some observations and comments on the state-of-the-science of landscape ecology as a tribute to this historic event. One may argue that the workshop galvanized a shift in paradigm and the development of an "identity" for landscape ecology. The field has advanced swiftly and productively during the past three decades, and reviewing the publications in the flagship journal Landscape Ecology indicates that the Allerton Park vision has been amazingly influential in shaping the direction of the field. Based on a synoptic analysis of the literature, I discuss the core questions, key topics, and future direction of landscape ecology.