Unravelling the importance of the Laptev Sea system in the Arctic biogeochemical cycling of nitrogen
Final Report Abstract
The objectives of the proposal were completely fulfilled. Our main publication in Global Biogeochemical Cycle is a contribution to the better understanding of the Arctic nitrogen cycle. We believe that this publication should have a long-lasting impact on the community interested in nutrient cycling and climate change in the Arctic. On the basis of our understanding of the modern nitrogen cycle in the Laptev Sea we were able to additionally extend our research into the past. Using a well-dated, high-resolution sediment sequence from the eastern Laptev Sea, we explored the potential of nitrogen isotopes (in the sediments) to reconstruct past environmental conditions and how these data integrate into the large-scale climate picture of the evolving Arctic environment during the last 9000 years. As a first example, the results and interpretation were recently published in Quaternary Science Reviews and are built on the finding of our first publication.
Publications
- River Water and Brine Inventory over the Laptev Sea Shelf: 2007 To 2011. American Geophysical Union Fall meeting, San Francisco, December, 2014
Thibodeau B & Bauch D
- (2015) Stratification-induced variations in nutrient utilization in the Polar North Atlantic during past interglacials. XIX INQUA 2015, Nagoya (Japan), 26. July- 2 August, 2015
Thibodeau B., Bauch H.A., Pedersen T.F.
- (2016) Nutrient utilization in the Northern Polar Ocean and its relation to present and past warm climate conditions. Past Gateways 4th International Conference, Trondheim (Norway), May 23-27, 2016
Bauch H.A., Thibodeau B., Pedersen T.F.
- (2016) Stratification-induced variations in nutrient utilization in the Polar North Atlantic during past interglacials. Earth and Planetary Science Letters
Thibodeau B., Bauch H.A., Pedersen T.F.
(See online at https://doi.org/10.1016/j.epsl.2016.09.060) - (2017) Implications of polar ocean surface stratification changes on a warming climate. European Geoscienes Union (EGU), General Assembly 2017, Vienna (Austria), April 33-28, 2017
Bauch H.A., Kandiano E.S., Thibodeau B., Pedersen T.F.
- (2017) The Sensitivity of Nordic Seas upper-ocean stratification to freshwater input. Goldschmidt Conference, Paris, August 13-18, 2017
Thibodeau B., Bauch H.A., Pedersen T.F., Schmittner A.
- 2017. Nitrogen dynamic in Eurasian coastal Arctic ecosystem: Insight from nitrogen isotope, Global Biogeochemical Cycles 31 (5), 836-849
Thibodeau B, Bauch D and M Voss
(See online at https://doi.org/10.1002/2016GB005593) - Evidence of dissolved organic nitrogen assimilation in arctic coastal ecosystem, ASLO Aquatic Sciences Meeting, Hawaii, February 2017
Thibodeau B, Bauch D, Voss, M
- Evidence of dissolved organic nitrogen assimilation in arctic coastal ecosystem, Third Xiamen Symposium on Marine Environmental Sciences, Xiamen (China), January, 2017
Thibodeau B, Bauch D, Voss, M
- 2018. Impact of Arctic shelf summer stratification on Holocene climate variability, Quaternary Science Reviews 191, 229-237
Thibodeau B, Bauch HA and J Knies
(See online at https://doi.org/10.1016/j.quascirev.2018.05.017)
