Fig. 1.
Stages of invasion adapted from Blackburn et al. (2011), including the associated biological responses as well as where anthropogenic contributions may facilitate invasions
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.