Articles | Volume 18, issue 15
Biogeosciences, 18, 4491–4510, 2021
https://doi.org/10.5194/bg-18-4491-2021
Biogeosciences, 18, 4491–4510, 2021
https://doi.org/10.5194/bg-18-4491-2021

Research article 02 Aug 2021

Research article | 02 Aug 2021

Stable isotope ratios in seawater nitrate reflect the influence of Pacific water along the northwest Atlantic margin

Owen A. Sherwood et al.

Related authors

Global Inventory of Gas Geochemistry Data from Fossil Fuel, Microbial and Burning Sources, version 2017
Owen A. Sherwood, Stefan Schwietzke, Victoria A. Arling, and Giuseppe Etiope
Earth Syst. Sci. Data, 9, 639–656, https://doi.org/10.5194/essd-9-639-2017,https://doi.org/10.5194/essd-9-639-2017, 2017
Short summary

Related subject area

Biogeochemistry: Stable Isotopes & Other Tracers
High-resolution 14C bomb peak dating and climate response analyses of subseasonal stable isotope signals in wood of the African baobab – a case study from Oman
Franziska Slotta, Lukas Wacker, Frank Riedel, Karl-Uwe Heußner, Kai Hartmann, and Gerhard Helle
Biogeosciences, 18, 3539–3564, https://doi.org/10.5194/bg-18-3539-2021,https://doi.org/10.5194/bg-18-3539-2021, 2021
Short summary
Geographic variability in freshwater methane hydrogen isotope ratios and its implications for global isotopic source signatures
Peter M. J. Douglas, Emerald Stratigopoulos, Sanga Park, and Dawson Phan
Biogeosciences, 18, 3505–3527, https://doi.org/10.5194/bg-18-3505-2021,https://doi.org/10.5194/bg-18-3505-2021, 2021
Short summary
Seasonality of nitrogen sources, cycling, and loading in a New England river discerned from nitrate isotope ratios
Veronica R. Rollinson, Julie Granger, Sydney C. Clark, Mackenzie L. Blanusa, Claudia P. Koerting, Jamie M. P. Vaudrey, Lija A. Treibergs, Holly C. Westbrook, Catherine M. Matassa, Meredith G. Hastings, and Craig R. Tobias
Biogeosciences, 18, 3421–3444, https://doi.org/10.5194/bg-18-3421-2021,https://doi.org/10.5194/bg-18-3421-2021, 2021
Short summary
Evaluating the response of δ13C in Haloxylon ammodendron, a dominant C4 species in Asian desert ecosystems, to water and nitrogen addition as well as the availability of its δ13C as an indicator of water use efficiency
Zixun Chen, Xuejun Liu, Xiaoqing Cui, Yaowen Han, Guoan Wang, and Jiazhu Li
Biogeosciences, 18, 2859–2870, https://doi.org/10.5194/bg-18-2859-2021,https://doi.org/10.5194/bg-18-2859-2021, 2021
Short summary
Modern silicon dynamics of a small high-latitude subarctic lake
Petra Zahajská, Carolina Olid, Johanna Stadmark, Sherilyn C. Fritz, Sophie Opfergelt, and Daniel J. Conley
Biogeosciences, 18, 2325–2345, https://doi.org/10.5194/bg-18-2325-2021,https://doi.org/10.5194/bg-18-2325-2021, 2021
Short summary

Cited articles

Aksenov, Y., Bacon, S., Coward, A. C., and Holliday, P.: Polar outflow from the Arctic Ocean: A high resolution model study, J. Mar. Syst. 83, 14–37, https://doi.org/10.1016/j.jmarsys.2010.06.007, 2010. 
Altabet, M. A., Pilskaln, C., Thunell, R., Pride, C., Sigman, D. M., Chavez, F., and Francois, R.: The nitrogen isotope biogeochemistry of sinking particles from the margin of the eastern North Pacific, Deep.-Sea Res. Pt. I, 46, 655–679, https://doi.org/10.1016/S0967-0637(98)00084-3, 1999. 
Anderson, L. A. and Sarmiento, J. L.: Redfield ratios of remineralization determined by nutrient data analysis, Global Biogeochem. Cy., 8, 65–80, https://doi.org/10.1029/93GB03318, 1994. 
Arrigo, K. and van Dijken, G. L.: Secular trends in Arctic Ocean net primary production, J. Geophys. Res., 116, C09011, https://doi.org/10.1029/2011JC007151, 2011. 
Azetsu-Scott, K., Petrie, B., Yeats, P., and Lee, C.: Composition and fluxes of freshwater through Davis Strait using multiple chemical tracers, J. Geophys. Res., 117, C12011, https://doi.org/10.1029/2012JC008172, 2012. 
Download
Short summary
Pacific water flowing eastward through the Canadian Arctic plays an important role in redistributing nutrients to the northwest Atlantic Ocean. Using samples collected from northern Baffin Bay to the southern Labrador Shelf, we show that stable isotopic ratios in seawater nitrate reflect the fraction of Pacific to Atlantic water. These results provide a new framework for interpreting patterns of nitrogen isotopic variability recorded in modern and archival organic materials in the region.
Altmetrics
Final-revised paper
Preprint