@article{Kabir_Naser_2011, title={Physico-chemical aspects of <i>Chandbill</i> Oxbow lake of Meherpur, Bangladesh}, volume={20}, url={https://www.banglajol.info/index.php/DUJBS/article/view/8835}, DOI={10.3329/dujbs.v20i1.8835}, abstractNote={&lt;p&gt;Some physico-chemical parameters of &lt;em&gt;Chandbill Baor&lt;/em&gt;, 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&amp;deg;C (x-bar&amp;plusmn; SE : 27.73 &amp;plusmn; 1.22&amp;deg;C). The Water temperature (17.10 to 32.10&amp;deg;C; x-bar&amp;plusmn; SE: 28.24 &amp;plusmn; 1.32&amp;deg;C), Secchi disc depth (8.89 to 53.34 cm; x-bar&amp;plusmn; SE : 26.19 &amp;plusmn; 4.29 cm), water depth (132.08 to 307.34 cm; x-bar&amp;plusmn; SE : 183.93 &amp;plusmn; 13.88 cm); total alkalinity (51.3 to 85.5 mg/l; x-bar&amp;plusmn; SE : 68.4 &amp;plusmn; 3.64 mg/l), total hardness (85.5 to 188.10 mg/l; x-bar&amp;plusmn; SE : 125.81 &amp;plusmn; 9.38 mg/l), dissolved oxygen (5.0 to 12.0 mg/l; x-bar&amp;plusmn; SE: 8.42 &amp;plusmn; 0.62 mg/l), free CO&lt;sub&gt;2&lt;/sub&gt; (5.0 to 30.0 mg/l; x-bar&amp;plusmn; SE : 14.58 &amp;plusmn; 2.64 mg/l), pH (8.0 to 10; x-bar&amp;plusmn; SE : 8.54 &amp;plusmn; 0.19), ammonia-nitrogen (0.3 to 0.7 mg/l; x-bar&amp;plusmn; SE: 0.46 &amp;plusmn; 0.04 mg/l) in the ’&lt;em&gt;Baor&lt;/em&gt;’ water were found to be suitable for survival of aquatic fauna. Nitrite-nitrogen was absent in the ’em&amp;gt;Baor’ throughout the year. Positive correlations were observed in between air and water temperature (r = 0.978); free CO&lt;sub&gt;2&lt;/sub&gt; and Secchi depth (r = 0.839), free CO&lt;sub&gt;2&lt;/sub&gt; 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 = &amp;minus;0.727); ammonia-nitrogen with Secchi disc depth (r = &amp;minus;0.840); dissolved oxygen with free CO&lt;sub&gt;2&lt;/sub&gt; (r = &amp;minus;0.636); pH with Secchi disc depth (r = &amp;minus;0.581) and pH with free CO&lt;sub&gt;2&lt;/sub&gt; (r = &amp;minus;0.825). The productivity of the lake was found to be medium and could be improved to higher level. Alkaline pH (8.54 &amp;plusmn; 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 &amp;lsquo;&lt;em&gt;Baor&lt;/em&gt;&amp;rsquo; (Oxbow lake) of Meherpur district, Bangladesh.&lt;/p&gt;&lt;p&gt;&lt;em&gt;Key words: &lt;/em&gt;Physico-chemical aspects; Oxbow lake; Meherpur&lt;/p&gt;&lt;p&gt;DOI: &lt;a href=&quot;http://dx.doi.org/10.3329/dujbs.v20i1.8835&quot;&gt;http://dx.doi.org/10.3329/dujbs.v20i1.8835&lt;/a&gt;&lt;/p&gt;&lt;p&gt;Dhaka Univ. J. Biol. Sci. &lt;strong&gt;20&lt;/strong&gt;(1): 31-39, 2011 (January)&lt;/p&gt;}, number={1}, journal={Dhaka University Journal of Biological Sciences}, author={Kabir, AKM Nazrul and Naser, M Niamul}, year={2011}, month={Nov.}, pages={31–39} }