|Mission Antarctica Field Reports - Week 12|
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Week 12, October 18-24, 2011
This week marked the end of the field season with the entire team. The Gould left on Thursday taking Joe and many of our station friends with it. Neal, Clair, and Keith- we cannot thank you enough for the welcoming way you accepted and cared for us over the past three months. As for Joe, you constantly provided the team with both strength and comic relief and we will miss you as we wrap up the field season. That being said, Iva, Deneb, Austin, and I have lots to do in the coming weeks and are as enthusiastic as ever!
When the Gould departs from Palmer Station it is tradition to take the ‘polar plunge’. In honor of Joe and our departing friends, Austin, Iva and I joined the group and took the plunge from the pier into the below freezing water. The group of jumpers dash across the snow, assemble in the hot tub, and warm up before heading back to work. It was cold, exhilarating, and provided much needed catharsis after a sad morning of goodbyes.
In the lab, Iva processed the net tows from the field as usual. Most samples were preserved in RNA later and one sample at each depth was extracted to check the quality of RNA. The light adaptation experiment came to a close early this week; 500 ml of each culture were collected and preserved in RNA later for future sequencing. To learn more about this experiment check out the video on the culture experiments on the videos page. We are now repeating the same experimental method but with three new cultures of very different morphologies. By studying how cultured diatoms of varying shapes and sizes adapt to shifting light conditions under laboratory conditions, we can better understand how diatoms adjust in nature. Austin and I began cell counting these new cultures on Saturday and the whole team will begin taking fluorometric measurements every four hours starting Monday.
In addition to losing Joe, we also lost the stationary fluorometer that was -until it’s departure on the Gould- taking continuous measurements on the local sea water. To compensate, the team is manually taking measurements every four hours.
Deneb has been hard at work both in the field and in her microscope cubical studying and identifying phytoplankton species. Although Corethron criophilium has continued to be the most abundant diatom in our Station E samples from the start, the population has basically doubled between sampling on September 16th and October 10th. To learn more and see the data, check out our Field Data.
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