Susan L. Williams,¹ Ian C. Davidson,² Jae R. Pasari,³ Gail V. Ashton,⁴ James T. Carlton,⁵ R. Eliot Crafton,⁶ Rachel E. Fontana,⁷ Edwin D. Grosholz,⁸ A. Whitman Miller,⁹ Gregory M. Ruiz,⁹ Chela J. Zabin<sup>10

1</sup>Susan L. Williams ( ) is a professor and coastal marine ecologist with the Bodega Marine Laboratory, in Bodega Bay, California, and the Department of Evolution and Ecology at the University of California, Davis (UC Davis). slwilliams@ucdavis.edu
²Ian C. Davidson is a research associate at the Aquatic Bioinvasion Research and Policy Institute of the Smithsonian Environmental Research Center, in Edgewater, Maryland, and is affiliated with the Environmental Sciences and Management Department of
³Jae R. Pasari is affiliated with the Bodega Marine Laboratory, of UC Davis, in Bodega Bay.
⁴Gail V. Ashton is a marine ecologist at the Smithsonian Environmental Research Center, in Tiburon, California.
⁵James T. Carlton is a professor and marine biologist at Williams College and director of the Williams-Mystic Maritime Studies Program, in Mystic, Connecticut.
⁶R. Eliot Crafton is a PhD candidate in the Graduate Group in Ecology at UC Davis.
⁷Rachel E. Fontana is an environmental oceanographer and a National Sea Grant Knauss Marine Policy Fellow in Washington, DC, who was affiliated with the Bodega Marine Laboratory and with the Graduate Group in Ecology at UC Davis during the project.
⁸Edwin D. Grosholz is a professor and benthic marine ecologist in the Department of Environmental Science and Policy at UC Davis.
⁹A. Whitman Miller is a research scientist and Gregory M. Ruiz is a senior scientist and head of the Smithsonian Environmental Research Center's Marine Invasion Research Laboratory.
¹⁰Chela J. Zabin is a marine ecologist with the Smithsonian Environmental Research Center and with the Department of Environmental Science and Policy at UC Davis.