Arctic seals as tracers of environmental and ecological change

Autor: Camille de la Vega, Claire Mahaffey, Robyn E. Tuerena, David J. Yurkowski, Steven H. Ferguson, Garry B. Stenson, Erling S. Nordøy, Tore Haug, Martin Biuw, Sophie Smout, Jo Hopkins, Alessandro Tagliabue, Rachel M. Jeffreys

Publikováno v: Limnology and Oceanography Letters, Vol 6, Iss 1, Pp 24-32 (2021)

Abstract Knowledge of species trophic position (TP) is an essential component of ecosystem management. Determining TP from stable nitrogen isotopes (δ15N) in predators requires understanding how these tracers vary across environments and how they re

Externí odkaz: https://doaj.org/article/0c6ea8ecc0aa4aa3b834ad4868cf547f

Permafrost degradation and nitrogen cycling in Arctic rivers: insights from stable nitrogen isotope studies

Autor: Adam Francis, Raja S. Ganeshram, Robyn E. Tuerena, Robert G. M. Spencer, Robert M. Holmes, Jennifer A. Rogers, Claire Mahaffey

Publikováno v: eISSN
Francis, A, Ganeshram, R, Tuerena, R, Spencer, R G M, Holmes, R M, Rogers, J A & Mahaffey, C 2023, ' Permafrost degradation and nitrogen cycling in Arctic rivers: Insights from stable nitrogen isotope studies ', Biogeosciences . < https://bg.copernicus.org/articles/20/365/2023/ >

Across the Arctic, vast areas of permafrost are being degraded by climate change, which has the potential to release substantial quantities of nutrients, including nitrogen into large Arctic rivers. These rivers heavily influence the biogeochemistry

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fda13bff7276f7cac567a0c498b7b648
https://bg.copernicus.org/articles/20/365/2023/

An Arctic Strait of Two Halves: The Changing Dynamics of Nutrient Uptake and Limitation Across the Fram Strait

Autor: Antonia Doncila, Pearse J. Buchanan, Ian Salter, Claire Mahaffey, Kai U. Ludwichowski, Paul A. Dodd, Alessandro Tagliabue, Jo Hopkins, Camille de la Vega, Robyn E. Tuerena, Raja S. Ganeshram, Louisa Norman, Wilken-Jon von Appen, Martin Graeve

Publikováno v: EPIC3Global Biogeochemical Cycles, Wiley Online Library
Tuerena, R E, Hopkins, J, Buchanan, P J, Ganeshram, R S, Norman, L, W-jvon-appen, Tagliabue, A, Doncila, A, Graeve, M, Ludwichowski, K, Dodd, P A, Vega, C D L, Salter, I & Mahaffey, C 2021, ' An Arctic strait of two halves: The changing dynamics of nutrient uptake and limitation across the Fram Strait ', Global Biogeochemical Cycles . https://doi.org/10.1029/2021GB006961

The hydrography of the Arctic Seas is being altered by ongoing climate change, with knock-on effects to nutrient dynamics and primary production. As the major pathway of exchange between the Arctic and the Atlantic, the Fram Strait hosts two distinct

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::120b185a7d357a57cca689a0eb01e374
https://doi.org/10.1029/2021gb006961

Internal Tides Drive Nutrient Fluxes Into the Deep Chlorophyll Maximum Over Mid‐ocean Ridges

Autor: Robyn E. Tuerena, Jonathan Sharples, Richard G. Williams, Alexander Forryan, Alberto C. Naveira-Garabato, Clément Vic, Claire Mahaffey, J. A. Mattias Green

Publikováno v: Tuerena, R E, Williams, R G, Mahaffey, C, Vic, C, Green, J A M, Naveira-Garabato, A, Forryan, A & Sharples, J 2019, ' Internal Tides Drive Nutrient Fluxes Into the Deep Chlorophyll Maximum Over Mid-ocean Ridges ', Global Biogeochemical Cycles, vol. 33, no. 8, pp. 995-1009 . https://doi.org/10.1029/2019GB006214
Global Biogeochemical Cycles: an international journal of global change
Global Biogeochemical Cycles (0886-6236) (Amer Geophysical Union), 2019-08, Vol. 33, N. 8, P. 995-1009

Diapycnal mixing of nutrients from the thermocline to the surface sunlit ocean is thought to be relatively weak in the world's subtropical gyres as energy inputs from winds are generally low. The interaction of internal tides with rough topography en

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59f5ab7847b40c4afb9ac67a0a84bd23
https://doi.org/10.1029/2019gb006214

Seasonal variations in the transport and biogeochemical turnover of mainly dissolved organic nitrogen from the Lena Delta to the nearshore Laptev Sea

Autor: Gesine Mollenhauer, Robyn E. Tuerena, Juri Palmtag, Kirstin Dähnke, Jens Strauss, Matthias Fuchs, Charlotte Haugk, Tina Sanders, Olga Ogneva, Claudia Fiencke

Pan-arctic rivers transport a huge amount of nitrogen to the Arctic Ocean. The permafrost-affected soils around the Arctic Ocean containe a large reservoir of organic matter including carbon and nitrogen, which partly reach the river after permafrost

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aca0cea9ea2c21b90c6ed05630fb4735
https://doi.org/10.5194/egusphere-egu21-8191