VARIATION OF WATER QUALITY IN NHA TRANG BAY

Authors

  • Phan Minh Thu Principal Researcher of Institute of Oceanography
  • Nguyen Trinh Duc Hieu Institute of Oceanography
  • Pham Thi Phuong Thao Ho Chi Minh City Institute of Physics

DOI:

https://doi.org/10.15625/1859-3097/16/2/7235

Keywords:

Nha Trang bay, water quality.

Abstract

Based on survey data in the period of 2013 - 2015 and historical data between 1996 - 1998, the paper showed the variation of water quality parameters by time. The concentration of total suspended sediment, chlorophyll-a, dissolved inorganic nitrogen, dissolved inorganic phosphorus and ratio of N:P changed significantly by season. The results of assessing water quality by UNTRIX (integrated concentration of Chlorophyll-a, dissolved inorganic nitrogen, dissolved inorganic phosphorus and level of saturated oxygen) indicated the quality levels were increased from meso-eutrophication in 1996 (average UNTRIX: 4.54 ± 0.76) to oligo-eutrophication in the period of 2013 - 2015 (average UNTRIX from 2.62 ± 0.66 to 3.81 ± 0.45).

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Author Biography

Phan Minh Thu, Principal Researcher of Institute of Oceanography

Marine Ecology

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Published

2016-06-30

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