Determining Key Water Parameters Influencing Phytoplankton in the Waterbodies of Soc Trang Province, Vietnam

IJEP 43(10): 920-928 : Vol. 43 Issue. 10 (October 2023)

Nguyen Thanh Giao1* and Tran Vang-Phu2

1. Can Tho University, College of Environment and Natural Resources, Can Tho 900000, Vietnam
2. Can Tho University, School of Law, Can Tho 900000, Vietnam

Abstract

The study aimed to identify key water quality parameters influencing on diversity of phytoplankton in the water- bodies of Soc Trang province, a coastal region of Vietnam. The results showed that the concentrations of DO, TSS, COD, NH4+-N, NO2-N, Cl, total Fe and coliform do not meet the allowable limits of QCVN 08-MT:2015/BTNMT, Column A2. The phytoplankton composition with a total of 127 species belonging to 6 phyla of Bacillariophyta, Euglenophyta, Chlorophyta, Cyanophyta, Dinophyta and Ochrophyta, in which Bacillariophyta has largest number of species. The density of phytoplankton ranges from 42 to 92,504 individuals per litre and the species composition, the density of phytoplankton present in waterbodies in study area tends to be high in rainy season. The blue-green algae (Oscillatoria perornata) dominated and appeared at most of monitoring sites, showing high nutrient status in the waterbodies. BIO-ENVI revealed that phytoplankton species composition is mainly affected by five environmental indicators, including DO, NH4+-N, NO3-N, PO43--P and coliform. The current findings provide useful scientific information for controlling bloom of phytoplankton by limiting release of nutrients into the waterbodies.

Keywords

Surface water quality, VN-WQI index, Pollution, Phytoplankton, Soc Trang province

References

  1. Alprol, A. E., et al. 2021. Assessment of water quality and phytoplankton structure of eight Alezandria beaches, Southeastern Mediterranean Sea, Egypt. J. Marine Sci. Eng., 9:1328-1343.
  2. Zaghloul, F.A.R., H.M. Khairy and N. R. Hussein. 2020. Assessment of phytoplankton community structure and water quality in the Eastern Harbor of Alexandria, Egypt. Egyptian J. Aquat. Res., 46: 145–151.
  3. Lien, N.T.K., et al. 2020. Changes in seasonal composition of phytoplankton in Hau river mouth, Hau Giang province. J. Sci. Can Tho University. 56(1): 80-91.
  4. Bruun, K. 2012. Algae can function as indicators of water pollution. Washington State Lake Protection Association.
  5. Bhat, N.A., A. Wanganeo and R. Raina. 2015. Variability in water quality and phytoplankton community during dry and wet periods in the tropical wetland, Bhopal, India. Ecosystem Ecography. 5(1): 1000160-1000168.
  6. QCVN 08-MT:2015/BTNMT. 2015. National technical regulation on surface water quality. Ministry of Natural Resources and Environment, Socialist Republic of Vietnam.
  7. Tien, D. D., and V. Hanh. 1997. Freshwater algae in Vietnam – Classification of green algae. NXB Agricultural Publishing House. (In Vietnamese).
  8. Ho, P. H. 1972. Algae. Sai Gon Publishing House. (In Vietnamese).
  9. Tuyen, N.V. 2003. Biodiversity in algae in Vietnam’s inland waters : Prospects and challenges. Agriculture Publishing House. (In Vietnamese).
  10. Fernando, C.H. 2002. A guide to tropical freshwater zooplankton: identification, ecology and impact on fisheries. Backhuys Publishers, Leiden, The Netherlands.
  11. Giao, N.T. 2020. Determination of surface water environmental indicators affecting phytoplankton in Bung Binh Thien, An Giang. J. Agric. Rural Develop., 86-95.
  12. Ty, D. V. 2018. Evaluation of water quality variation in Bung Binh Thien, An Giang province. Sci. J. Can Tho University. 53(3B):125-131.
  13. Tam, N.T., et al. 2021. Evaluation of surface water quality due to the influence of activities in the area of Can Tho city. J. Meteorol. Hydrol., 733: 39-55.
  14. Phuong, Nguyen Lan and Mai Thi Thuy Duong. 2018. Assessment of the current situation of underground water sources in Thanh Khue district, Da Nang city. J. Sci. Tech. University Danang. 5(126):56-60.
  15. Duy Hanh, L., et al. 2016. Evaluation of river water quality related to odour pollution of some inner rivers in Hanoi city. J. Sci. Vietnam National University, Hanoi. 32(1S):147-155.
  16. Sarda, P. and P. Sadgir. 2015. Assessment of multi- parameters of water quality in surface waterbodies: a review. Int. J. Res. Appl. Sci. Eng. Tech., 3(8): 331-336.
  17. Osibanjo, O., A. P. Daso and A. M. Gbadebo. 2011. The impact of industries on surface water quality of river Ona and river Alaro in Oluyole industrial estate, Ibadan, Nigeria. African J. Biotech., 10(4): 696-702.
  18. Vinh, Le Thi. 2013. Overview of research on coastal environmental quality in Khanh Hoa in the last 5 years, 2007-2011. International Conference. East Sea 2012 on Nha Trang. Proceedings, pp 196-205.
  19. Zhao, J., et al. 2011. Multivariate analysis of surface water quality in the Three Gorges area of China and implications for water management. J. Env. Sci., 23(9):1460-1471.
  20. Hang, N.T., et al. 2018. Studying the current status of water quality and assessing the capacity of receiving wastewater from Dong Nai river in the period 2012-2016, the section flowing through Dong Nai province. J. Agric. Sci. Tech., 2(3): 889-902.
  21. Malá, J., et al. 2021. Surface watercourses as sources of karst water pollution. Int. J. Env. Sci. Tech., 19:3503–3512.
  22. Dung, Tran Duc. 2021. Evaluation of water quality in La Buong river by multivariate statistical method in space and time. J. Meteorol. Hydrol., 731:36-53.
  23. Phu, V.V., N.M. Tri and N.D. Tao. 2013. Investigate, evaluate and propose solutions to protect freshwater resources on Con Co island: Quang Tri province for domestic purposes. International Conference on East sea 2012 – 90 years of marine science in vietnamese and adjacent waters in Nha Trang. Proceedings, pp 206-214.
  24. Minh, V.Q., et al. 2006. Applying the interpolation technique to determine the spatial variation of iron content in groundwater in Hau Giang province. J. Sci. Res. Works. 2016:409-414.
  25. Adeiuwon, J.O. and M. A. Adelakun. 2012. Physico-chemical and bacteriological analysis of surface water in Ewekoro local government area of Ogun state, Nigeria: Case study of Lala, Yobo and Agodo rivers. Int. J. Water Resour. Env. Eng., 4(3): 66-
    72.
  26. Iskandar, A., et al. 2020. Food preferences of nilem carp (Osteochilus hasselti) at paddy-fish culture pond in Kuningan, Garut and Tasikmalaya, West Java province. Earth Env. Sci., 521: 012009.
  27. Giao, N.T., Huynh Thi Hong Nhien and Tran Ngoc Huy. 2020. Diversity of phytoplankton and benthic fauna at Vinh Dam port in Dao Phu Quoc, Kien Giang province. Sci. J. Can Tho University. 56(6A): 42-56.
  28. Zohdi, E. and M. Abbaspour. 2019. Harmful algal blooms (red tide): a review of causes, impacts and approaches to monitoring and prediction. Int. J. Env. Sci. Tech.
  29. Giao, N.T., H.T.H. Nhien and T.N. Huy. 2020. Diver-sity of phytoplankton and benthic fauna at Vinh Dam port in Dao Phu Quoc, Kien Giang province. Sci. J. Can Tho Univ., 56(6A):42-56
  30. Zhu, H., X. G. Liu and S.P. Cheng. 2021. Phytoplankton community structure and water quality assessment in an ecological restoration area of Baiyangdian lake, China. Int. J. Env. Sci. Tech., 18:1529-1536.
  31. Trang, L. T., et al. 2019. Phytoplankton diversity and its relation to the physico-chemical parameters in main waterbodies of Vinh Long province, Vietnam. J. Vietnam. Env., 11(2):83-90.
  32. Juneja, A., R. M. Ceballos and G. S. Murthy. 2013. Effects of environmental factors and nutrient availability on the biochemical composition of algae for biofuels production: A review. Energies. 6:4607-4638.
  33. Turkoglu, M. 2010. Winter bloom and ecological behaviours of coccolithophore Emiliania huxleyi (Lohmann) in the Dardanelles (Turkish straits system). Hydrol. Res., 41:104-114.
  34. Vietnam Environment Administration. 2019. Decision no. 1460/QD-TCMT on the issuance of technical guidelines for calculation and publication of Vietnam water quality index (VN-WQI).