Phytoplankton flora of Tanguar Haor ecosystem of Bangladesh: Chlorophyta

Bhuiyan, Mah; Kowser, Abu; Islam, Sams; Mohid, Mahin; Islam, Md. Saiful; Kakoly, SA; Asaduzzaman, Khandoker; Khondker, Moniruzzaman

doi:10.3329/jbcbm.v5i2.44920

Cited by 2 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Eudorina sp., Pleuodorina sp., Pandorina morum, Dictyosphaerium pulchellum, Coelastrum microporum, Closterium kuetzingianum var. kuetzingianum, Pediastrum duplex and Fragilaria virescens were found common in occurrence in both the Haor Ecosystems (4)(5) .…”

Section: Resultsmentioning

confidence: 94%

“…The latter compound was recorded >1.0 mg/l, except the Rauar Station of Tanguar Haor. Bhuiyan et al (2)(3)(4)(5) observed the mean water transparency 2.51 m, SRP 17.19 µg/l and chl-a 5.47 in Tanguar Haor (2)(3)(4)(5) , while the measurements carried out in the Hakaluki Haor during the fish kill event were: water transparency 1.24 m, SRP 12.50 µg/l and chl-a 38.05 µg/l. Tanguar Haor has a relatively deeper basin compared to Hakaluki and holding little clearer water, as it is evident by the data on Secchi Disc value and chl-a measured for both the Haors.…”

Section: Resultsmentioning

confidence: 97%

“…In this Haor Basin of Bangladesh, Tanguar Haor has been declared as an Ecologically Critical Area (ECA) by the Government of the People's Republic of Bangladesh and as a Ramsar Site by UNESCO in 1999. The physicochemical condition of this Haor from Rauar and Watch Tower Station were studied (2)(3)(4)(5) .Phytoplankton composition of at least 5 out of 10 algal divisions of this Haor were also worked out (2)(3)(4)(5) . Considering area, the largest haor ecosystem of Bangladesh named Hakaluki is situated in the districts of Moulvibazar and Sylhet.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Plankton composition of Hakaluki Haor of Moulvibazar, Bangladesh

Bhuiyan

Mohid

Islam

et al. 2021

Dhaka Univ. J. Biol. Sci

View full text Add to dashboard Cite

In the present study, physicochemical and biological variables related to the water quality of Hakaluki Haor were studied. Three study stations viz. Bakshimul, Jalabeel and Dudhai were investigated because of an event of mass scale of dead fish and other aquatic organisms were reported. The stations had water depths from 2.74 - 5.13 m and Secchi Disc Transparency were 0.74 - 1.91 m. The air and water temperature among the three stations ranged from 28.2 - 30.4°C and 21.8 - 28.8°C, respectively. TDS ranged from 35 - 42 mg/l, while the electric conductivity of water showed 40 - 50 μS/cm. SRP, nitrate and SRS ranged from 10.68 - 12.32 μg/l, 0.116 - 0.122 mg/l and, 16.08 - 35.42 mg/l, respectively. The concentration of DO was very poor which ranged from 2.8 - 5.4 mg/l. In all the three studied stations, the free CO2 concentration was 0.096 mg/l. Chlorophyll-a value was moderate in all the three stations (ranged within 34.67 and 40.60 μg/l). The phaeopigment concentration was low and ranged from 1.51- 8.72 μg/l among the studied stations. Concentration of ammonia was much higher (1.03 - 1.72 mg/l) than the standard value for Bangladesh (0.5 mg/l). From this analysis, it is observed that during fish kill event the concentration of ammonia was higher with low DO content which might have resulted because of the decomposition of upper foliar parts of the rice plant due to the sudden inundation. Gross α and β counts were found to be 0.01 and 0.10 Bq/l in the Haor water at the time of fish kill. From the planktonic community, 16 phytoplanktons from green algae, 14 euglenoids, 5 diatoms, 5 dinoflagellates and 12 zooplankton species were recorded. A shift in the pH of the Haor water from acidic to alkaline might have occurred during the last 3 decades. A detailed limnological study covering the climatic seasons of Bangladesh has been recommended to be carried out for Hakaluki Haor. Dhaka Univ. J. Biol. Sci. 30(1): 69-78, 2021 (January)

show abstract

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Plankton composition of Hakaluki Haor of Moulvibazar, Bangladesh

Bhuiyan

Mohid

Islam

et al. 2021

Dhaka Univ. J. Biol. Sci

View full text Add to dashboard Cite

show abstract

“…The excessive pollution of Tanguar Haor has recently drawn the attention of scientists from Bangladesh [14,15]. Previously, a number of studies has been conducted in Tanguar Haor regarding biodiversity [7,[16][17][18][19], birds [20], aquatic plants [21], water quality [17], radioactivity [15], and ecosystem management [22,23]. However, none of them focused on heavy metal contamination or its ecological risk to inhabitants.…”

Section: Introductionmentioning

confidence: 99%

Contamination and Ecological Risk Evaluation of Metals in Sediments from a Wetland of International Importance (Ramsar Site)

et al. 2023

View full text Add to dashboard Cite

Wetlands are highly productive and diverse ecosystems providing home to thousands of organisms. These ecosystems reduce water pollution, sequester carbon, support livelihoods, and increase food security. However, these ecological functions are being impeded due to increased levels of metals in the environment. Therefore, the primary objective of this study was to evaluate the degree of metal contamination in the surface sediment of a wetland, Tanguar Haor, for the first time. The result demonstrated that the mean concentrations of Fe, Cu, Zn, As, Pb and Hg varied from 13140.39 to 45675, 40.07 to 46.29, 47.60 to 57.15, 18.89 to 35.23, 1.24 to 2.64, and 0.35 to 0.42, respectively. The concentration of As was found to be higher than the average shale value. The concentration of Cu (44.19 μg/g) and Hg (0.38 μ/g) was very close to the shale value (45 μg/g and 0.40 μg/g, respectively), indicating a moderate level of contamination. The contamination level was further evaluated by multi-indices, e.g., the contamination factor (CF), the enrichment factor (EF), and the geo-accumulation index (Igeo). The average EF values for As (115.41), Cu (57.68), and Hg (55.47) were >50, indicating a high degree of contamination (extremely severe enrichment). However, CF values showed varied levels of pollution; for example, the majority of the area was only somewhat contaminated with As, Cu, and Hg, but less contaminated with Fe, Zn, and Pb. According to Igeo, sampling sites were found to be unpolluted or less polluted by heavy metals. Based on potential ecological risk assessment (PERI), the degree of risk from the six heavy metals decreased in the following sequence: As > Cu > Zn > Pb > Cr > Ni. PERI values indicated the study area has been exposed to moderate risk to As and low risk to other metals. This study provides an opportunity for frequent monitoring of heavy metals in this ecologically critical environment, and thus curbing heavy metal pollution.

show abstract

Phytoplankton flora of Tanguar Haor ecosystem of Bangladesh: Chlorophyta

Cited by 2 publications

References 2 publications

Plankton composition of Hakaluki Haor of Moulvibazar, Bangladesh

Plankton composition of Hakaluki Haor of Moulvibazar, Bangladesh

Contamination and Ecological Risk Evaluation of Metals in Sediments from a Wetland of International Importance (Ramsar Site)

Contact Info

Product

Resources

About