2012 Fiscal Year Final Research Report
Elucidation of the role of anaerobic respiration for the sulfur and nitrogen circulation in the ocean and Antarctic lakes
| Project/Area Number |
22510013
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Environmental dynamic analysis
|
|---|
| Research Institution | Hiroshima University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
IMURA Satoshi 国立極地研究所, 研究教育系, 准教授 (90221788)
KUDOH Sakae 国立極地研究所, 研究教育系, 准教授 (40221931)
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Keywords | 硫黄循環 / 窒素循環 / 南極湖沼 / 気候変動 |
|---|
| Research Abstract |
The bacterial community structures of salt lakes in which haloclines exist differed between these three salt lakes, indicating that there were many unidentified bacteria, and that they were rich in biodiversity. The bacterial communities of eight freshwater lakes formed a simple structure, such as Thiomicrospira sp., which inhabits the ocean in polar regions and fall water around McMurdo Dry Valleys, becomes the predominant genus. Phylogenetic analysis revealed that these bacteria growing in salt and freshwater lakes were closely related genera. DMSP concentrations from phytoplankton and DMS and dissolved DMSP concentrations in the water samples are shown. There is a negative correlation between the abundance of DMSO-respiring bacteria and DMSP, there are many Marinobacter in the surface water.
|
