Diversity of Green Macroalgae Genus Ulva (Chlorophyta) in Hai Phong and Potential Uses

The knowledge of marine algae species composition is imperative not only for understanding the structure, function and biogeographical affinities but also planning strategies conservation management. This study was carried out to determine diverse evaluate some use-values green macroalgae from genus Ulva in Hai Phong, where many different habitats such as estuarine floodplains, lagoons or small bays bottom (hard, sandy, sandy-mud bottom). samples were collected at 11 sites 5 areas 2021. Based on results composition, identified Ulva. Phong accounted 73.3% total recorded Vietnam; accounting 19.6% number Asian species, 12.9% world. Cluster MDS (Multi-Dimensional Scaling analysis) similarity vertical distribution geographical among studied species. active ingredients uses value, determined 9 with economic value.