Bacterial growth and community composition in fractions of dissolved organic carbon of different molar mass from interstitial water

2006 ◽  
Vol 51 (5) ◽  
pp. 439-444 ◽  
Author(s):  
Š. Axmanová ◽  
J. Koutný ◽  
J. Cupalová ◽  
M. Rulík
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Community Composition ◽  
Bacterial Growth ◽  
Molar Mass ◽  
Interstitial Water

scholarly journals Lack of Correlation between Turnover of Low-Molecular-Weight Dissolved Organic Carbon and Differences in Microbial Community Composition or Growth across a Soil pH Gradient

2011 ◽  
Vol 77 (8) ◽  
pp. 2791-2795 ◽  
Author(s):  
Johannes Rousk ◽  
Philip C. Brookes ◽  
Helen C. Glanville ◽  
David L. Jones
Keyword(s):  
Molecular Weight ◽  
Microbial Community ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Community Composition ◽  
Soil Ph ◽  
Predictive Power ◽  
Microbial Community Composition ◽  
Low Molecular Weight ◽  
Soil C

ABSTRACTWe studied how soil pH (pHs 4 to 8) influenced the mineralization of low-molecular-weight (LMW)-dissolved organic carbon (DOC) compounds, and how this compared with differences in microbial community structure. The mineralization of LMW-DOC compounds was not systematically connected to differences in soil pH, consistent with soil respiration. In contrast, the microbial community compositions differed dramatically. This suggests that microbial community composition data will be of limited use in improving the predictive power of soil C models.

Bacterial growth on dissolved organic carbon from a blackwater river

1987 ◽  
Vol 13 (1) ◽  
pp. 13-29 ◽  
Author(s):  
Judy L. Meyer ◽  
Richard T. Edwards ◽  
Rebecca Risley
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Bacterial Growth ◽  
Blackwater River

Dissolved organic carbon and relationship with bacterioplankton community composition in 3 lake regions of Lake Taihu, China

2014 ◽  
Vol 60 (10) ◽  
pp. 669-680 ◽  
Author(s):  
Xinghong Pang ◽  
Hong Shen ◽  
Yuan Niu ◽  
Xiaoxue Sun ◽  
Jun Chen ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Community Composition ◽  
Lake Taihu ◽  
Eutrophic Lakes ◽  
Bacterioplankton Community ◽  
Doc Concentration ◽  
Lake Center ◽  
Meiliang Bay ◽  
The Relationship

To clarify the relationships between dissolved organic carbon (DOC) and bacterioplankton community composition (BCC), a 1-year survey (June 2009 – May 2010) was conducted in 3 regions of Lake Taihu (Meiliang Bay, Lake Center, and Eastern Taihu), China. Polymerase chain reaction – denaturing gradient gel electrophoresis was used to analyze the composition and heterogeneity of the bacterioplankton community. Canonical correspondence analysis was used to explore the relationships between DOC concentration and BCC. We found a significant negative correlation between DOC concentration and bacterioplankton community diversity (as measured by the Shannon–Wiener index (H′)). The results show that spatial variation in the bacterioplankton population was stronger than the seasonal variation and that DOC concentration influences BCC in Lake Taihu. DOC concentration, followed by macrophyte biomass, water turbidity, and phytoplankton biomass were the most influential factors that account for BCC changes in Lake Taihu. More detailed studies on the relationship between DOC concentration and BCC should focus on differences in DOC concentrations and quality among these lake regions. DOC had a significant impact on BCC in Meiliang Bay. The relationship between DOC and BCC in the 2 other regions studied (Lake Center and Eastern Taihu) was weaker. The results of this study add to our understanding of the BCC in eutrophic lakes, especially regarding the role of the microbial loop in lake ecosystems.

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