Species diversity and distribution of the macro algae from Bach Long Vi Island, Vietnam

Quynh Nga Nguyen; Thi Mai Anh Nguyen; Manh Hung Vu; Duc Tien Dam

doi:10.15625/1859-3097/21968

Author affiliations

Authors

Nguyen Quynh Nga National Institute of Medical Materials, Hanoi, Vietnam; Hanoi University of Science, VNU, Vietnam
Nguyen Thi Mai Anh Institute of Marine Environment and Resources, VAST, Vietnam
Vu Manh Hung Institute of Marine Environment and Resources, VAST, Vietnam
Dam Duc Tien Institute of Marine Environment and Resources, VAST, Vietnam; Graduate University of Science and Technology, VAST, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/21968

Keywords:

Species diversity, distribution, macroalgae, Bach Long Vi Island.

Abstract

Research results on seaweed at four cross-sections of Bach Long Vi Island from 1994 onwards have shown that 129 species of macroalgae belong to 4 phyla. Among them, Cyanobacteria has ten species, accounting for 7.75% of the total number of species; Red seaweed (Rhodophyta) has 70 species (54.26%); Brown seaweed (Ochrophyta/Phaeophyta) has 27 species (20.93%), and Green seaweed (Chlorophyta) has 22 species (17.06%). They belong to 21 orders, 42 families, and 72 seaweed genera. The number of species in the studied transects ranges from 41 species (transect 4) to 99 species (transect 2) and averages 72.25 species/transect. The similarity coefficient of seaweed species at four surveyed transects ranged from 0.26 (between transects 1 and 4) to 0.74 (between transects 2 and 3) and averaged 0.48. Of the 129 known species, there were 44 species only distributed in the intertidal zone, accounting for 34.10% of the total number of species; 108 species are only distributed in the subtidal zone (83.72%) and 26 species are distributed in both intertidal and subtidal zones (20.15%); most species distributed from the low intertidal zone downward and are concentrated mainly in the low intertidal zone and the upper range of the subtidal zone. In terms of structure, the number of taxa ranges from 2 (Cyanophyta) to 12 (Rhodophyta). On average, 5.25 orders/phylum; of families from 4 (Cyanophyta, Ochrophyta) to 25 (Rhodophyta) and 10.5 families/order; of genera from 6 (Cyanophyta) to 42 (Rhodophyta) and 18; of species from 10 (Cyanophyta) to 70 (Rhodophyta) and 32.25. The average number of species/genera is quite large (32.25). However, some genera have only one species (Hydrocoryne, Asparagopsis, Parvocaulis, etc.), and some other genera have a more significant number of species (Dictyota: 10 species; Hypnea: 8 species; Peyssonnelia: 5 species, etc.). Among the families, some have only one genus (Peyssonneliaceae, Scytosiphonaceae, Codiaceae, etc.), but others have more genera (Dictyotaceae: 5, Boodleaceae: 4, Sargassaceae: 2, etc.). The total number of orders of the four phyla (Cyanophyta, Rhodophyta, Ochrophyta, and Chlorophyta) is 21. Of which, Cyanophyta has 2 orders, accounting for 9.5% of the total number of recorded orders: Rhodophyta (12 and 57.1%), Ochrophyta (4 and 19%), and Chlorophyta (3 and 14.4%).

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References

[1] Van Nguyen, T., Le, N. H., Lin, S. M., Steen, F., and De Clerck, O., 2013. Checklist of the marine macroalgae of Vietnam. Botanica marina, 56(3), 207–227.

[2] Titlyanov, E. A., and Titlyanova, T. V., 2012. Marine plants of the Asian Pacific region countries, their use and cultivation. Dalnauka and AV Zhirmunsky Institute of Marine Biology, Far East Branch of the Russian Academy of Sciences, Vladivostok. 376 p.

[3] Chapman, V. J., 1970. Seaweeds and their uses. Methuen, London, 2nd ed., 340 p.

[4] Tien, D. D., 1997. Seaweed of Bach Long Vy Island. Marine Resources and Environment. Science and Technology Publishing House, Vol. 3, pp. 243–252. (in Vietnamese).

[5] Thanh, T. D., Lan, T. D., Minh Huyen, N. T., and Huy, D. V., 2013. Nature and environment in Bach Long Vi island and sea. Publishing House for Science and Technology, Hanoi. 275 p. (in Vietnamese).

[6] Duy, D. A., and Khuong, D. V., 2013. Current status of seaweed species diversity in surveyed islands in Vietnamese waters. Vietnam Journal of Marine Science and Technology, 13(2), 105–115. (in Vietnamese).

[7] Duy, D. A., and Khuong, D. V., 2020. Diversity of seaweed species in Bach Long Vi marine reserve. Journal of Agriculture and Rural Development, 2020, 102–111. (in Vietnamese).

[8] Quang, B. D., and Quynh, H. Q., 2013. An analysis of biodiversity of Bach Long Vi island, Hai Phong city. Academia Journal of Biology, 35(4), 522–528.

[9] State Committee for Science and Technology, 1981. Temporary rules of marine general investigation (Seaweed part). Science and Technology Publishing House, Hanoi. 205 p. (in Vietnamese).

[10] English, S., Wilkinson, C., and Baker V., 1997. Manual for survey of tropical marine resources. Australian Institute of Marine Science (AIMS).

[11] Naval Command, 2024. Tide table (Vol. I). People’s Army Publishing House, Hanoi. 85 p.

[12] Institute of Marine Environment and Resources, 2014. Procedure for investigation and survey of marine resources and environment. Environmental Biology and Chemistry section. Publishing House for Science and Technology, Hanoi. 291 p. (in Vietnamese).

[13] Ban, N. T., 1997. Principles of taxonomy and botanical system. In: A series of graduate lectures at the National Center for Natural Sciences and Technology. 56 p. (in Vietnamese).

[14] Taylor, W. R., 1960. Marine algae of the Eastern tropical and subtropical coast of the Americas. Lord Baltimore Press, Michigan University. 870 p.

[15] Segawa, S., 1957. Coloured illustrations of the seaweeds of Japan (Vol. 18). Hoikusha.

[16] Ho, P. H., 1969. Vietnam seaweed (Southern part). Learning Resource Center, Saigon. 558 p. (in Vietnamese).

[17] Tseng, C. K., 1983. Common Seaweeds of China. Science press, Beijing, China. 316 p. (in Chinese).

[18] Dinh, N. H., Nang, H. Q., But, T. N., and Tien, N. V., 1993. Marine macroalgae in Vietnam (Northern part). Science and Technology Publishing House, Hanoi. 364 p. (in Vietnamese).

[19] Guiry, M. D., and Guiry, G. M., 2015. Algaebase. Worldwide electronic publication. National University of Ireland, Galway. http://www.algaebase.org; accessed August 15, 2015.

[20] Sorensen, T., 1948. A method of establishing groups of equal amplitude in plant sociology based on similarity of species content and its application to analyses of the vegetation on Danish commons. Biologiske Skrifter/Kongelige Danske Videnskabernes Selskab, 5, 1–34.

[21] Feldmann, J., 1937. Les algues marines de la côte des Albères. I–III. Cyanophycées, Chlorophycées, Phaeophycées. Rev. Algol., 9, 141–335.