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| Diversity and Succession of Flora in Sediments of Fish Farming Ponds in Different Years |
| TANG Ling,KUANG Sheng-yao,LIU Xing-guo,ZHANG Chun,ZHANG Jin-xiu |
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Abstract The bacterial diversity and succession was investigated in 1 year pond‐sediment (M1) and 4 year pond‐sediment (M4) using the constructed 16S rRNA gene library .A total of 145 clones was obtained from M1 with Shannon‐waver index of 2 .37 and 172 clones from M4 with Shannon‐waver index of 2 .22 . The Simpson was found to be 9 .36 in M1 with coverage of 100% and 7 .58 in M4 with coverage of 93 .3% . The M1 were dominanted by Prolixibacter (34/145) ,Thiocapsa (17/145) , Planctomycetacia (15/145) and Desulfomicrobium (12/145) ,while Longilinea (41/172) , Prolixibacter (31/172) , Xanthomonas (22/172) ,Cetobacterium (21/172) and Cytophaga (15/172) were prevalent in M4 .The community si‐milarity coefficient between M1 and M4 was 0 .6171 at species level .The findings suggested that the fishpond was colonized a complicated bacterial community ,and the community succession associated with the culture process .
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Received: 25 November 2014
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