Volume : 7, Issue : 3, March - 2018

Zooplankton density and diversity indices in the Bhakra-Yamuna link canal system in Narwana region, Haryana.

Parmila Devi, Anil K. Tyor

Abstract :

<p>&nbsp;</p> <p class="MsoNormal" style="text-align:justify;text-indent:49.65pt;line-height:&#10;150%"><span lang="EN-IN" style="font-size:12.0pt;line-height:150%;font-family:&#10;&quot;Times New Roman&quot;,&quot;serif&quot;">Present study was undertaken to analyse the <span style="mso-bidi-font-style:italic">qualitative and quantitative </span>variations in abundance and diversity indices of zooplankton of Bhakra &ndash;Yamuna link canals in the Narwana region, Haryana. For analysis, samples were collected from three selected sites (S₁, S₂, and S₃) on Bhakra-Yamuna Link canals for a period of one year from January to December, 2013. For diversity index, Shannon and weaver diversity index, Simpson dominance index and Pielou evenness index were used and to calculate similarity index between selected sites, Jaccard similarity coefficient was used. Result revealed that a total of 13 species of zooplanktons were recorded belonging to group protozoa, rotifera, cladocera and insecta.</span><span lang="EN-IN" style="font-size:12.0pt;line-height:150%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;&#10;mso-fareast-font-family:TimesNewRomanPSMT"> Population density of zooplankton was low at site S₁ and higher at site S₂.</span><span lang="EN-IN" style="font-size:12.0pt;line-height:150%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;&#10;mso-bidi-font-style:italic">The diversity indices revealed a significant decline in the population of zooplankton from site S₂ to S₃ after linking with site S₁. </span><span lang="EN-IN" style="font-size:12.0pt;line-height:150%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Similarity coefficient was more between S₂ and S₃ as compare to site S₃ and S₁ and site S₁and S₂. Cladocerans were dominant at site S₁and Protozoans were dominant at site S₂. </span><span lang="EN-IN" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;&#10;line-height:150%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;"><o:p></o:p></span></p>