PHYSICO-CHEMICAL STATUS OF WATER AT THE VICINITY OF  ST. MARTIN’S ISLAND, BAY OF BENGAL, BANGLADESH

M.Y.  Mehedi; S.  Islam; K.  Azam; D.  Kamal

doi:10.53808/KUS.2000.2.1.71-77-Ls

Authors

M.Y. Mehedi Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208,Bangladesh
S. Islam Institute of Marine Sciences, University of Chittagong, Chittagong 4331, Bangladesh
K. Azam Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208,Bangladesh
D. Kamal Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh

DOI:

https://doi.org/10.53808/KUS.2000.2.1.71-77-Ls

Keywords:

Physico-chemical parameter; Nutrients; St. Martin’s Island; Bay of Bengal

Abstract

Surface water around two stations of the St. Martin’s Island stretching 12 km south from southern most part of main land located in Ukhia and Teknaf were collected monthly during low tide and were analyzed for different hydrological parameters. The maximum and minimum values of water temperature, salinity, dissolved oxygen (DO), pH, water transparency, phosphate-phosphorous (PO4-P), nitrate -nitrogen (NO3-N), nitrite-nitrogen (NO2-N), ammonia-nitrogen (NH3-N) were noted as 27.9 and 25.6°C, 34.93 and 31.40 ppt., 8.71 and 6.35 mg l ^{- 1}, pH 9.39 and 7.2, 74.86 and 52.40 cm, 18.02 and 7.28 mg l ^{- 1}, 3.61 and 0.72 mg l ^-1, 1.88 and 0.07 mg l ^-1, and 1.92 and 0.08 mg l ^-1respectively. During the period of investigation, the values of DO showed inverse relationship with salinity and water temperature. Nutrient contents in the investigated areas were much higher.

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