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hello my name is fatima and my work here

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at lc and tokyo tech focuses on

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carbonate and rich hot springs

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i conducted a series of geochemical and

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microbial community structures surveys

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in ireland hot springs across japan as

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analogs to precambrian oceans

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my focus is on the iron cycling in these

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hot springs and the groups driving it

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including microphilic iron oxidizers

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photoferrotrophs and the simulatory iron

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reducers

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the study revealed a complete iron

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cycling present in all of the hot

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springs but with interesting trends in

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the groups driving it

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by combining the geochemistry and the

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microbial community structure we were

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able to discern two main types of

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springs low temperature and low salinity

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f-type and high temperature and high

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salinity m-type in f-type springs

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gallium acetype-iron oxidizers were more

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abundant whereas m-type springs present

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in higher abundances of set of

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protobacteria the implications for

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precambrian notions productivity and

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biosignatures will be the focus of my

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future work