"This paper considers Ammophila arenaria as an invasive species that alters and homogenizes coastal dune ecosystems, creates ecosystem-modifying foredunes and threatens rare, seriously endangered, and endemic species such as Phacelia argentea. Because A. arenaria poses severe issues to P. argentea in northern California, a community group called the Tolowa Dunes Stewards (TDS), and the Tolowa Dunes State Park (TDSP) began implementing two separate...