Papers by Shafiqul Islam Shafiq
Water Quality and bottom habitat Assessment Around Nijhumdwip Island, Hatia, Chittagong, Bangladesh, 2023
In the first week of December 2016, this investigation was carried out to determine the ecologica... more In the first week of December 2016, this investigation was carried out to determine the ecological border around Nijhum Dwip Island. During the investigation period, chosen stations 1-8(N 22 0 05′ 06.7″ E 91 0 01′ 58.8″ , N 22 0 06′ 07.2″ E 90 0 58′ 56.9″, N 22 0 03′ 18.1″ E 90 0 56′ 38.5″, N 22 0 01′ 37.6″ E 90 0 57′ 58.8″, N 22 0 05′ 00.8″ E 91 0 01′ 25.1″, N 22 0 03′ 44.6″ E 91 0 06′ 50.9″, N 22 0 04′ 38.8″E 91 0 05′ 55.9″, N 22 0 03′ 42.4″ E 91 0 02′ 25.2″) recorded air temperatures ranging from 24.1°C to 27.5°C. Significant correlations between air and water temperatures were seen, and daylight had an impact as well. During the study period, the stations' surface water temperatures varied from 25.1°C to 27°C. Throughout the research area, the pH values were largely constant. Between the locations, the pH of the surface water varied from 7.4 to 7.8. Between 3.70 ppt to 5.45 ppt, the salinity of the surface water reported at eight locations was low. Freshwater runoff from the lower Meghna Estuary may be the cause of this. From 5.20 to 8.20 mg/l of dissolved oxygen were found in surface water at stations 1 through 8. Normal estuarine biota will thrive in this environment. The research area's water transparency was very low. During the study period, the Secchi-Disc transparency varied across stations 1-8 from 4-15 cm. Between stations 1 and 8, the surface water's total dissolved solids (TDS) ranged from 575 to 709 mg/l.
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Papers by Shafiqul Islam Shafiq