BioInvasions Records (2015) Volume 4, Issue 4: 243–248 Open Access doi: http://dx.doi.org/10.3391/bir.2015.4.4.02 © 2015 The Author(s). Journal compilation © 2015 REABIC Rapid Communication Range expansion of a non-native, invasive macroalga Sargassum horneri (Turner) C. Agardh, 1820 in the eastern Pacific 1,2 2 2 1,2 2,3 Lindsay M. Marks *, Paulina Salinas-Ruiz , Daniel C. Reed , Sally J. Holbrook , Carolynn S. Culver , 2 4 2 5 6 John M. Engle , David J. Kushner , Jennifer E. Caselle , Jan Freiwald , Jonathan P. Williams , Jayson R. 7 8 9 Smith , Luis E. Aguilar-Rosas and Nikolas J. Kaplanis 1Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, Santa Barbara, California 93106-6150, USA 2Marine Science Institute, University of California Santa Barbara, Santa Barbara, California 93106-6150, USA 3California Sea Grant, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093-0232, USA 4Channel Islands National Park, 1901 Spinnaker Drive, Ventura, California 93001, USA 5Reef Check Foundation, 13723 Fiji Way, B-2, Marina del Rey, California 90292, USA 6Moore Laboratory of Zoology, Occidental College, Los Angeles, California 90041, USA 7Department of Biological Sciences, California State Polytechnic University, Pomona, California 91768, USA 8Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Carr. Transpeninsular Ensenada-Tijuana, 3917. Frac. Playitas, Ensenada, Baja California, México. C.P. 22860 9Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093-0202, USA *Corresponding author E-mail:
[email protected] Received: 11 July 2015 / Accepted: 18 August 2015 / Published online: 19 October 2015 Handling editor: Charles Martin Abstract Sargassum horneri (Turner) C.