Assessing the impacts of nonindigenous marine macroalgae: an update of current knowledge Davidson, Alisha D. Campbell, Marnie L. Hewitt, Chad L. Schaffelke, Britta Botanica Marina 2015 Warsaw, Poland 2015-04-01 58 2 55 79 (Yendo) Fensholt Fensholt Yendo [166,390,914,940] Phaeophyceae Sargassaceae Sargassum Chromista Fucales 9 64 Ochrophyta species muticum  Several of the case studies of the impacts of  Sargassum muticumintroductions showed negative effects, such as being an undesirable food source for herbivores ( Monteiro et al. 2009), suppression of native algal assemblages ( Olabarria et al. 2009), and space monopolization ( Thomsen et al. 2006). However, several of the studies had ambiguous results, with some taxonomic groups showing increased abundance and some showing decreased abundance ( Lang and Buschbaum 2010, Gestoso et al. 2012).  Sargassum muticumalso enhanced epibiotic diversity in soft-bottom environments ( Buschbaum et al. 2006), and at time scales of <1 week after colonization ( Rodil et al. 2008). This species was a preferred forage material for the snail  Lacuna vinctaMontagu ( Britton-Simmons et al. 2011), and its presence increased overall faunal abundance (  Stronget al. 2006).