Physico-chemical aspects of <i>Chandbill</i> Oxbow lake of Meherpur, Bangladesh

Abstract

Some physico-chemical parameters of Chandbill Baor, a natural oxbow lake of Meherpur district were studied from September 2006 to August 2007. Air temperature of the study area varied from 18.10 to 32.10°C ( x ± SE : 27.73 ± 1.22°C). The Water temperature (17.10 to 32.10°C; x ± SE: 28.24 ± 1.32°C), Secchi disc depth (8.89 to 53.34 cm; x ± SE : 26.19 ± 4.29 cm), water depth (132.08 to 307.34 cm; x ± SE : 183.93 ± 13.88 cm); total alkalinity (51.3 to 85.5 mg/l; x ± SE : 68.4 ± 3.64 mg/l), total hardness (85.5 to 188.10 mg/l; x ± SE : 125.81 ± 9.38 mg/l), dissolved oxygen (5.0 to 12.0 mg/l; x ± SE: 8.42 ± 0.62 mg/l), free CO2 (5.0 to 30.0 mg/l; x ± SE : 14.58 ± 2.64 mg/l), pH (8.0 to 10; x ± SE : 8.54 ± 0.19), ammonianitrogen (0.3 to 0.7 mg/l; x ± SE: 0.46 ± 0.04 mg/l) in the 'Baor' water were found to be suitable for survival of aquatic fauna. Nitrite-nitrogen was absent in the 'Baor' throughout the year. Positive correlations were observed in between air and water temperature (r = 0.978); free CO2 and Secchi depth (r = 0.839), free CO2 and water depth (r = 0.714); water depth and Secchi depth (r = 0.903); total hardness and total alkalinity (r = 0.861) and pH with DO (r = 0.661). However, inverse relations were observed among ammonia-nitrogen with water depth (r = −0.727); ammonia-nitrogen with Secchi disc depth (r = −0.840); dissolved oxygen with free CO2 (r = −0.636); pH with Secchi disc depth (r = −0.581) and pH with free CO2 (r = −0.825). The productivity of the lake was found to be medium and could be improved to higher level. Alkaline pH (8.54 ± 0.19) was supposed to be helpful for proper growth and development of fishes and aquatic organisms. This is the first limnological report from a natural 'Baor' (Oxbow lake) of Meherpur district, Bangladesh.

Water quality parameters of six selected oxbow lakes (baors) in Bangladesh

“…This observation has similarity with the findings of Kabir and Naser (2011) (2) . There is no significant difference (p > 0.05) of means of DO between the Baors.…”

“…The mean value of pH 8.29 ± 0.04 recorded in the present study showed that the water of the six baors was alkaline in nature. Kabir and Naser (2011) made similar observations from the Chandbill oxbow lake (2) . According to Trivedi and Raj (1992), the optimum pH range for aquatic life varied from 6.8 to 9.0 (8) .…”

Physico-chemical assessment of water bodies and Socio-economic analysis from the coastal belt of Chittagong

“…Taken together, continuous monitoring of that area is given prime importance to the researcher. Physico-chemical are one of the important water quality monitoring tools as any disturbance of these parameters may impose detrimental e ect to the living organisms (G.W et al, 2015;Kabir and Naser, 2011). It is worthwhile to mention that any physico-chemical disturbance of the water health ultimately e ect the national socio-economic status of the country.…”

Comprehensive Overview of REDD+ in India: Status, Opportunities and Challenges

“…Every water use requires a certain minimum water quality ensuring no harm to the user (Kabir et al, 2020). At present land use changes, urban human habitation, inland navigation activity as well as major development scheme in terms of road, bridge and other construction works are greatly affecting this freshwater resource (Rubel et al, 2019;Kabir and Naser, 2011).…”