Alien seaweeds as indicators of environmental impacts: the case of the Phlegrean Lakes Fusaro and Miseno Lakes (Gulf of Naples, Tyrrhenian Sea)

Alien seaweeds were investigated in the Campania Phlegrean lakes, within the framework of the Flagship Project RItMare Project. One species, Hypnea cornuta (Rhodophyta, Gigartinales) was found in the Fusaro Lake; three species were detected in the Miseno Lake: Caulerpa cylindracea (Chlorophyta, Bryopsidales), Codium fragile subsp. fragile (Chlorophyta, Bryopsidales) and Gigartina cf. pistillata (Rhodophyta, Gigartinales). Importation of aquaculture organisms seems the most likely hypothesis for their introduction