Bacterial diversity of water and sediment in the Changjiang estuary and coastal area of the East China Sea
| Autor: | Bi-Wei Feng, Jin-Hui Wang, Ling-Yun Xiang, Zhe-Xue Quan, Ziye Hu, Han Meng, Xiao-Ran Li |
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| Rok vydání: | 2009 |
| Předmět: |
DNA
Bacterial China Geologic Sediments Firmicutes Oceans and Seas Biology Applied Microbiology and Biotechnology Microbiology Diversity index RNA Ribosomal 16S Gammaproteobacteria Cluster Analysis Seawater Phylogeny Principal Component Analysis geography geography.geographical_feature_category Bacteria Ecology Species diversity Bacteroidetes Sediment Estuary Biodiversity Sequence Analysis DNA biology.organism_classification Rarefaction (ecology) Water Microbiology |
| Zdroj: | FEMS Microbiology Ecology. 70:236-248 |
| ISSN: | 1574-6941 0168-6496 |
| DOI: | 10.1111/j.1574-6941.2009.00772.x |
| Popis: | The Changjiang estuary and the coastal area of the East China Sea (ECS) represent important interfaces of terrestrial and marine environments. This study included analyses of water and sediments collected during different seasons in these regions to determine the composition of microbial assemblages by means of 16S rRNA gene clone libraries. We retrieved 1946 sequences and 779 distinct operational taxonomic units from 36 clone libraries. Shannon-Weaver diversity index values and rarefaction analysis indicated that bacterial diversity in the sediment samples was much higher than in the water samples. Proteobacteria (72.9%) was the most abundant phylum, followed by Firmicutes (6.4%), Bacteroidetes (4.6%) and Actinobacteria (4.1%). In the water, clone sequences related to Alphaproteobacteria were the most abundant, whereas in the sediment samples, sequences affiliated with Gammaproteobacteria were predominant. Principal coordinate analysis showed that water samples collected from the Changjiang estuary and the ECS clustered separately. However, this spatial pattern could not be observed in sediment samples, which were mainly distinguished from one another by the season. Bacterial diversity in the Changjiang estuary was higher than that in the ECS, which may be the result of the mixing of bacterial communities from the Changjiang River, the estuary and the coastal ocean. |
| Databáze: | OpenAIRE |
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