NDLI: Distribution of ammonia-oxidizing Betaproteobacteria community in surface sediment off the Changjiang River Estuary in summer

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Distribution of ammonia-oxidizing Betaproteobacteria community in surface sediment off the Changjiang River Estuary in summer

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Acta Oceanologica Sinica : Volume 30, Issue 2, March 2011

Acta Oceanologica Sinica : Volume 30, Issue 1, January 2011

Acta Oceanologica Sinica : Volume 29

Distribution of ammonia-oxidizing Betaproteobacteria community in surface sediment off the Changjiang River Estuary in summer

Content Provider	Springer Nature Link
Author	Li, Jialin Bai, Jie Gao, Huiwang Liu, Guangxing
Copyright Year	2011
Abstract	The spatial distribution of ammonia-oxidizing Betaproteobacteria (βAOB) was investigated by FISH (fluorescence in situ hybridization) and DGGE (denaturing gradient gel electrophoresis) techniques in the sediment off the Changjiang River Estuary. Sediment samples were collected from eight stations in June before the formation of hypoxia zone in 2006. The abundance of βAOB ranged from 1.87×10$^{5}$ to 3.53×10$^{5}$ cells/g of sediment. βAOB abundance did not present a negative correlation with salinity, whereas salinity was implicated as the primary factor affecting nitrification rates. The DGGE profiles of PCR-amplified amoA gene fragments revealed that the βAOB community structure of sample S2 separated from other samples at the level of 40% similarity. The variations in composition of βAOB were significantly correlated with the salinity, temperature, absorption ability of sediments and TOC. The statistical analysis indicates that the βAOB abundance was a main factor to influence nitrification rates with an influence ratio of 87.7% at the level of 40% biodiversity similarity. Considering the good correlation between βAOB abundance and nitrification estimates, the abundance and diversity of βAOB community could be expected as an indirect index of nitrification activity at the study sea area in summer.
Starting Page	92
Ending Page	99
Page Count	8
File Format	PDF
ISSN	0253505X
Journal	Acta Oceanologica Sinica
Volume Number	30
Issue Number	3
e-ISSN	18691099
Language	English
Publisher	The Chinese Society of Oceanography
Publisher Date	2011-07-28
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ammonia-oxidizing Betaproteobacteria (βAOB) diversity abundance nitrification surface sediment Changjiang River Estuary (CRE) Oceanography Environmental Chemistry Engineering Fluid Dynamics Marine & Freshwater Sciences Ecology Climate Change
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Oceanography

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