Species composition and distribution of seaweeds in Phu Yen province


  • Nguyen Thi Thu Hang Graduate University of Science and Technology, VAST, Vietnam
  • Nguyen Van Tu Institute of Tropical Biology, VAST, Vietnam
  • Vo Van Phu Hue University of Science, Hue University, Vietnam
  • Nguyen Ngoc Lam Institute of Oceanography, VAST, Vietnam




Phu Yen province, species composition, distribution, seaweeds.


Results of four field surveys, conducted from June 2017 to June 2018 found that in the Phu Yen coastal water, a total of 103 seaweed species have been recorded, increasing the total number of seaweed species in Phu Yen province to 133 species, with 81 newly recorded species for Phu Yen geographic area. Among 103 seaweed species, 4 species belong to Cyanobacteria, 38 species belong to Rhdophytes, 24 species belong to Phaeophytes, and 37 species belong to Chlorophytes.  The number of species at surveyed sites V1 to V9 varies from 3 species/site (V3) to 83 species/site (V7) and on average 27 species/site. Sørensen’s similarity coefficient varies from 0.05 (between V3 and V7) to 0.86 (V3 and V4) and on average 0.25. 74/103 species were collected in the littoral zone, 67 species in sublittoral zone and most of them are distributed at 0-4 m water depth of subtidal zone. The marine algal flora is represented by mixing of subtropical and tropical characteristics as Cheney index was 3.


Download data is not yet available.


[1] Nguyen Huu Dai, Pham Huu Tri, Nguyen Xuan Vy, 2009. Species composition and resources of seaweed and seagrass of Phu Quy island, Binh Thuan province. Collection of Marine Research Works, 16, 225–243, (in Vietnamese).

[2] Nguyen, V. 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. https://doi.org/10.1515/bot-2013-0010.

[3] State Scientific & Technical Committee, 1980. Temporary integrated marine integrated investigation (seaweed section). Science and Technnics Publishing Housse, Hanoi, 205 p. (in Vietnamese).

[4] Nguyen, H. D., 1997. Sargassaceae in Viet Nam - Resource and utility. Agriculture Publishing House, 200 p, (in Vietnamese).

[5] Nguyen Huu Dai, 2007. Flora of Viet Nam (Order Fucales) Vol 11. Science and Technnics Publishing Housse, Hanoi. (in Vietnamese).

[6] Nguyen, H. D., Huynh, Q. N., Tran, N. B., Nguyen, V. T., 1993. Marine Algae of North Vietnam. Publishing House for Science and Technology, Hanoi, 364 p. (in Vietnamese).

[7] Pham-Hoang, H., 1969. Marine Algae of South Vietnam. Ministry of Education and Youth, Learning Resource Center Publishing, Saigon, 558 p. (in Vietnamese).

[8] Le, N. H., and Nguyen, H. D., 2010. Gracillaria in Viet Nam - Resource and utility. Publishing House for Science and Technology, Hanoi, 260 p., (in Vietnamese).

[9] Luan, R., Ding, L., Lu, B. and Tseng, C. K, 2013. Flora algarum marinarum sinicarum. Tomus III. Phaeophyta No. I(1) Ectocarpales Ralfsiales Sphaceariales Dictyotales. pp. [i]–xxii, 1–195, pls I–XXII. Beijing: Science Press.

[10] Tsutsui, I., Huynh, Q. N., Nguyen, H. D., Arai, S., Yoshida., T., 2005. The common marine plants of southern Vietnam. Numerous colour photographs Usa: Japan Seaweed Association. 250 p.

[11] Cheney, D. P., 1977. R and C/P-new and improved ratio for comparing seaweed floras. Journal of Phycology, 13, 12.

[12] Huynh, Q. N., 2007. Investigate planning and proposing solutions to develop sustainable seaweed culture (Kappaphycus alvarezii, Doty). Project final report. Vietnam Academy of Science and Technology. (in Vietnamese).

[13] Nguyen, V. L., 2013. Coral reef fishes in the coastal waters of Phu Yen. Vietnam Vietnam Journal of Marine Science and Technology, 13(1), 31–40.

[14] 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.

[15] Le, N. H., and Nguyen, H. D., 2006. Contribution to The Study of Gracilaria and relative genera (Gracilariales, Rhodophyta) from Vietnam. Coastal Marine Science, 30, 214–221.




How to Cite

Hang, N. T. T., Tu, N. V., Phu, V. V., & Lam, N. N. (2021). Species composition and distribution of seaweeds in Phu Yen province. Vietnam Journal of Marine Science and Technology, 20(4A), 69–80. https://doi.org/10.15625/1859-3097/15614