Checklist of the marine macroalgae of Vietnam - Phycology ...

224 T.V. Nguyen et al.: Marine macroalgae of VietnamNumber of species120010008006004002000CyanobacteriaRhodophytaPhaeophyceaeChlorophytaVietnam Phillipines Malaysia Thailand TaiwanCountryTable 1 Comparison of Vietnamese seaweed flora with neighbouringcountries.Neighbouring country Vietnam (N a= 827)N bN a + bC sPhilippines 1011 295 0.319Malaysia 241 107 0.200Thailand 182 93 0.184Taiwan 288 112 0.201N b, number of individuals in the neighbouring country; N a + b, thenumber of taxa shared with Vietnam; S ø rensen similarity index:C s= (2N a + b)/(N a+ N b).Figure 4 Numbers of species of seaweeds in Vietnam and neighbouringcountries.appear to be the most diverse country with a staggeringtotal of 1011 species, whereas Vietnam harbours acomparable 827 species (Figure 4 ). S ø rensen similarityindexes are low (C s< 0.5; Table 1 ). These low values arecounterintuitive. Within similar climatic zones and in theabsence of major dispersal barriers, marine biodiversityis expected to be much more homogenous (see Spaldinget al. 2007 ). Even though we cannot rule out the existenceof a biogeographical pattern making the Vietnameseseaweed flora highly distinct, we are of the opinion thatthe low similarity with neighbouring countries is primarilyan artifact resulting from taxonomic inconsistencies.The checklist presented here could serve as a valuabletool, listing the Vietnamese seaweed diversity and stimulatingintraregional comparative research. It may thenbecome clear that many local endemics have a muchwider distribution.Acknowledgements: Tu Van Nguyen is indebted to theBelgian Technological Cooperation for a grant as PhDresearcher. We express our gratitude towards Mike Guiryand the Algaebase team for their help with retrieving thecorrect names of Vietnamese seaweeds.Received 24 January, 2013; accepted 10 May, 2013ReferencesAbbott, I.A. 1999. Note on some species of Halymenia in thesouthwestern Pacific In : (I.A. Abbott, ed.) Taxonomy of economicseaweeds with reference to some Pacific species. Vol. 7. CaliforniaSea Grant College Program, La Jolla, CA. pp. 163 – 172. ( 1 )Abbott, I.A., J. Fisher and K.J. McDermid. 2002. Newly reported andrevised marine algae from the vicinity of Nha Trang, Vietnam.In : (I.A. Abbott, ed.) Taxonomy of economic seaweeds withreference to some Pacific species. Vol. 8. California Sea GrantCollege Program, La Jolla, CA. pp. 291 – 321. ( 2 )Agardh, J.G. 1848. Species genera et ordines algarum ... Volumenprimum: algas fucoideas complectens . Berling, Lundae [Lund].pp. viii + 363.Agardh, J.G. 1851 – 1863. Species genera et ordines algarum ...Volumen secundum: algas florideas complectens . Berling,Lundae [Lund]. pp. xii +1291.Ajisaka, T., Q.N. Huynh and H. Dinh Nguyen. 1995. Studies of twozygocarpic species of Sargassum (subgenus Sargassum ) fromVietnam. In : (I.A. Abbott, ed.) Taxonomy of economic seaweedswith reference to some Pacific species. Vol.5. California SeaGrant College Program, La Jolla, CA. pp. 45 – 55 ( 3 ).Ajisaka, T., Q.N. Huynh, H. Dinh Nguyen and T. Yoshida. 1997a.S. carpophyllum J. Agardh var. nhatrangense (Pham)Ajisaka comb. Nov. and S. piluliferum (Turner) C. Agardhvar. serratifolium Yamada from Vietnam. In : (I.A. Abbott, ed.)Taxonomy of economic seaweeds with reference to some Pacificspecies. Vol.6. California Sea Grant College Program, La Jolla,CA. pp. 51 – 60. ( 4 )Ajisaka, T., Q.N. Huynh, H. Dinh Nguyen, B.R. Lu, Y.-M. Chiangand T. Yoshida. 1997b. Sargassum hemiphyllum (Turnner) C.Agardh var. chinensis J. Agardh from Vietnam, the Chinesemainland, and Taiwan. In : (I.A. Abbott, ed.) Taxonomy ofeconomic seaweeds with reference to some Pacific species.Vol.6. California Sea Grant College Program, La Jolla, CA.pp. 51 –60. (5 )Chiang, Y.-M., T. Yoshida, T. Ajisaka, G. Trono, C.K. Tseng andB.R. Lu. 1992. Distribution and variation in Sargassumpolycystum C.A. Agardh (Fucales, Phaeophyta). In : (I.A. Abbott,ed.) Taxonomy of economic seaweeds with reference to somePacific and Western Atlantic species . Vol.3. California Sea GrantCollege Program, La Jolla, CA. pp. 35 – 42. ( 6)Brought to you by | Universiteit GentAuthenticated | 157.193.165.84Download Date | 6/10/13 3:38 PM