| |
| |
|
|
|
|
| |
 |
Ocean Observation: From Microfluidics to Global Scale
|
| |
|
|
Effects of elevated pCO2 on DMS release from bacterial perspective
P-OB-11
Sheng-hui Zhang* , Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC)
Gui-peng Yang, Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Ministry of Education/Qingdao Collaborative Innovation Center of Marine Science and Technology
Da-wei Pan, Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC)
Presenter Email: shzhang@yic.ac.cn |
| Natural A. catenella and sterile A. catenella were used to investigate the microbial community contribution to DMS and DMSP production. Results show that DMS production ability in the sterile A. catenella decreased notably compared with that of natural A. catenella, while Chl a and DMSP concentrations showed no significant difference. These findings suggest that the attached bacteria are dominant in DMS production. In addition, we found that the DMS-producing isolates behavior differed greatly in MAMS medium, and decreasing pH had variable effects on their abundances and DMS production ability. Meanwhile, elevated pCO2 also had controversial effects on DMS-prodution per cell. Considering the important role of bacteria in DMS prodution, this uncertainty and complexity may be the main reason that previous laboratory incubation, shipboard incubation and mesocosm experiments have not obtained uniform conclusions on the effects of decreasing pH on DMS release. |
|
|
|
|
|
|
|
|