Nitrogen dynamics with Japanese team
21 July 2015
|Last year, I visited Blomstrand kittiwake clif with Kentaro,
to discuss options for research. This year he has returned with two colleagues to quantify nitrification and denitrification along a gradient of
fertilization by sea gulls. I join them today to the other side of the fjord as their boatsman and polar bear guard.
|They sample headspace in a small chamber after an hour incubation and collect soil and plant material.|
|From left to right: Keisuke Ono, Kentaro Hayashi and Yukiko Tanabe, all from Japan.|
|It is a steep cliff, towering 150 meter above sea level.|
Reindeer love the tall grasses. In the background some of the 400 pair of kittiwake nesting here and fertilizing the soil with faeces.
|Kittiwakes, coloured for science.||Sometimes a young falls out of the nest.|
|Kentaro and me, photo Yukiko Tanabe.||
|The results are published: |
Hayashi, K., Y. Tanabe, K. Ono, M.J.J.E. Loonen, M. Asano, H. Fujitani, T. Tokida, M. Uchida & M. Hayatsu (2018)
Seabird-affected taluses are denitrification hotspots and potential N2O emitters in the High Arctic.
Nature Scientific Reports 8 (1): 17261.