Friday evening I returned to McMurdo Station from Cape Royds. In Antarctic lingo, we call that going back to "Mactown." There, I met up with two more of my group members that have just arrived in Antarctica. Here we are, all three together!
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We will be a three-member team until early January, when Ross (our fourth member) arrives.
During my two days in town, I've been processing the samples I collected from F6 and Cape Royds. One of the things I have to do is clean the soil off of the moss I've been collecting, so that I can measure the nutrient content of the moss back in the U.S. To do this, I have to place the moss in a dish under the microscope:
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I showed you before what patches of moss look like in the field. It looks like a piece of carpet, and it's hard to tell the individual plant stems apart.
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This is what a piece of that patch looks like through the microscope lens:
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The green parts you see are just a small part of the moss. Those are the leaves, which grow on a stem. Below all of those green tops are a large mass of brown rhizoids, that work like roots for keeping the moss in place and collecting nutrients.
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In this picture, the stems are bigger than the rhizoids, but in the moss I work with, there's a lot more rhizoids than stems. There's a lot of soil stuck in that tangle of rhizoids, and I have to wash all of that out. If I don't, when I take my nutrient measurements, I won't be able to tell the difference between what nutrients are in the moss versus the soil. It's very time-consuming, and requires a lot of patience!
Once the moss is clean, I put it in an oven (at a low temperature) to dry it out so that I can safely ship it back to the U.S. for analysis.
This is just one of the chores I've been doing since I've been in Mactown. It's been busy, because tomorrow I head back to F6 on Lake Fryxell for more field work!
[Photo credits: Moss diagram from http://www.botany.hawaii.edu]