weblog 2007

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Landed on Ytre Bre÷yane

23 juni 2007 15:00

For the second year, Steffen Hahn is visiting the station. He is collecting and dissecting 50 eggs of barnacle geese. He will analyse stable isotopes of nitrogen and carbon. The ratio of the isotopes shows the origin of the food at the moment when the tissue was built. Are geese using nutrients of Spitsbergen, Norway or Scotland for their eggs?
One egg from each nest This egg is unfertilized At this moment, the data suggest that barnacle geese rely on southern nutrients while pinkfooted geese seem to use more energy from arctic origin. After this year it is time to write a scientific paper about this topic.

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20070621, 14:00 20070623, 15:00 20070623, 21:00 all items shown with small pics
nestcheck collecting eggs mid-summer party