In January 2013, scientists detected ancient chemical autotrophic microorganisms in water samples collected from Lake Whelanth, whose energy sources are carbon dioxide, iron, sulfur and ammonia, etc., from the biology of Montana State University John Prescu is the head of the Microbiology team at the Whelansi Lake survey project, and he is also one of the famous scholars in the field of Antarctic microbiology research. There are also some heterotrophic microorganisms, which cannot be converted into energy by using carbon dioxide, and need to obtain a carbon source from the surrounding environment. Therefore, heterotrophic microorganisms can relish “taste†what the self-trophic microorganisms “discard†Carbonaceous materials.
The researchers also tested the presence of eukaryotes in the water samples. This work is still in progress. During the process of obtaining deep water samples from Lake Whelansi, scientists have adopted strict sterilization measures to prevent ground Microorganisms enter the isolated Whelan Lake to ensure that water samples are not interfered by microbes in the ground environment from collection to bottling. Under these strict measures, scientists have also discovered that there are incredible methane bubbles at the bottom of the lake. It is being observed whether these bubbles are generated by bacteria or gas left in ancient sediments.
The research team also discovered an unexplainable phenomenon. The sediment samples collected at the bottom of the lake are somewhat salty. As the depth continues to increase, the sediment samples become more and more salty, which shows that the deeper the water content in the sample The higher the salinity, the phenomenon caught John Prescu's attention. He thinks that we have never seen such a high salinity before, even in Antarctic lakes that were once submerged by the ocean. In addition, information such as lake sediment samples and historical water levels suggest that the environment suitable for microbial growth that we have discovered may not exist 10 years ago.
Lake Whelanth is located west of Antarctica and is hidden nearly 800 meters below the ice. Since 2006, scientists have found that the lake has "filled up" and "dried up" twice. The tracking plan is mainly through the The increase and decrease of ice cover on the lake surface infer the change of water level, so the "age" of Whelansi Lake may be less than 10 years old.
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