Distribution and Diversity of Oligochaetes in Selected Ponds of Thiruvananthapuram District, Kerala, South India

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td align="left">Period of study</td><td align="center">Seasons</td><td align="center">P1</td><td align="center">P2</td><td align="center">P3</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td align="left" rowspan="3">2006-2007</td><td align="center">Postmonsoon</td><td align="center">1.90</td><td align="center">2.00</td><td align="center">1.73</td></tr><tr><td align="center"> Premonsoon</td><td align="center">1.94</td><td align="center">1.97</td><td align="center">1.72</td></tr><tr><td align="center">Monsoon</td><td align="center">1.92</td><td align="center">2.03</td><td align="center">1.78</td></tr><tr><td align="center" colspan="5"><hr/></td></tr><tr><td align="left" rowspan="3">2007-2008</td><td align="center">Postmonsoon</td><td align="center">1.85</td><td align="center">1.97</td><td align="center">1.76</td></tr><tr><td align="center">Premonsoon</td><td align="center">1.89</td><td align="center">1.98</td><td align="center">1.69</td></tr><tr><td align="center">Monsoon</td><td align="center">1.91</td><td align="center">2.05</td><td align="center">1.75</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Shannon-Weaver diversity index (<svg height="17.7125" id="M7" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 19.1875 17.7125" width="19.1875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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Advances in Ecology

tab3

Table 3

Table 3: Distribution and Diversity of Oligochaetes in Selected Ponds of Thiruvananthapuram District, Kerala, South India 