Damashek summary.docx - Dr Damashek critique Dr Julian Damashek studies thaumarchaeota which are archaea that have the ability to oxidize ammonia into

Damashek summary.docx - Dr Damashek critique Dr Julian...

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Dr. Damashek critique Dr. Julian Damashek studies thaumarchaeota, which are archaea that have the ability to oxidize ammonia into nitrate. They have adapted to oligotrophic environments, and have a high affinity for ammonia and oxygen. This allows them to have a good ability to compete for ammonia in a scarce ammonia environment. He then explained what the nitrogen cycle, and how human activity can affect the cycle, which in turn can affect ecosystem productivity. He further said that ammonia oxidizers are critical in the N cycle. Dr. Damashek looked at a study that published data from the Amazon River. This study took samples of microbes from the amazon river, which is high in carbon and sediments. They found a large amount of thaumarchaeota in their samples, which was odd since the environment of the amazon river is far from what the thaumarchaeota like. Dr. Damashek wanted to know how they thrive in such an environment. He used the genome sequences of the Amazon River study, and sequenced the DNA and RNA. He
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  • Spring '14
  • LawrenceR.Aaronson

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