Elizabeth Shadwick homepage

Elizabeth Shadwick

Affiliated Scholar

Department: Physical Sciences 2/23

  • BSc., McGill University, 2003
  • MSc., University of Alberta, 2006
  • PhD., Dalhousie University, 2010
Research Interests

My research interests include inorganic carbon (CO2) chemistry, air-sea exchange of biogenic gases, ocean acidification, and other effects of climate change in coastal systems. I am particularly interested in quantifying changes to the ocean carbon system on seasonal, annual, and multi-annual time scales and in distinguishing between natural and anthropogenic trends in the ocean. My work has been largely focused on high-latitude (Arctic and Antarctic) environments, but will soon include exploring the interplay between hypoxia and acidification in Chesapeake Bay. I am interested in expanding my focus beyond an observational chemical basis, to include coupling with physical processes and impacts on biological systems.

Recent Publications
Please [[v|shadwick, email me]] if you would like an electronic copy of any of the following publications.
  • E.H. Shadwick, T.W. Trull, B. Tilbrook, A.J. Sutton, E. Schulz, and C.L. Sabine (2015) Seasonality of biological and physical controls on air-sea CO2 fluxes from hourly observations at the Southern Ocean Time Series site south of Australia. Global Biogeochem. Cy. doi: 10.1002/2014GB004906.
  • Alin, S.R., R.E. Brainard, N.N. Price, J.A. Newton, A. Cohen, W.T. Peterson, E.H. DeCarlo, E.H. Shadwick, S. Noakes, and N. Bednaršek (2015) Characterizing the natural system: Toward sustained, integrated coastal ocean acidification observing networks to facilitate resource management and decision support. Oceanography 28(2):92–107, doi: 10.5670/oceanog.2015.34.
  • E.H. Shadwick and H. Thomas (2014) Seasonal and spatial variability in the CO2 system on the Scotian Shelf (Northwest Atlantic). Mar. Chem., 160: 42-55, doi: 10.1016/j.marchem.2014.01.009.

  • E.H. Shadwick, B. Tilbrook, N. Cassar, T.W. Trull and S.R. Rintoul. (2014) Summertime physical and biological controls on O2 and CO2 in the Australian Sector of the Southern Ocean. J. Marine Syst., doi: 10.1016/j.jmarsys.2013.12.008.

  • E.H. Shadwick, B. Tilbrook and G.D. Williams. (2014) Biological modification of carbonate chemistry in dense water outlfows from the Mertz Polynya, East Antarctica. J. Geophys. Res. 119: 1-14, doi: 10.1002/2013JC009286

  • S.E. Craig, H. Thomas, C.T. Jones, W.K.W. Li, B.J.W. Greenan, E.H. Shadwick, and W.J. Burt (2014) The effect of seasonality in phytoplankton community composition on CO2 uptake on the Scotian Shelf,  J. Mar. Syst., doi:10.1016/j.jmarsys.2014.07.006.

  • B.D. Fry, D. Justic, P. Riekenberg, E. Swenson, E. Turner, L. Wang, L. Pride, N. Rabalais, J. Kurtz, J. Lehrter, M. Murrell, E.H. Shadwick, and B. Boyd (2014) Carbon Dynamics on the Louisiana Continental Shelf and Cross-Shelf Feeding of Hypoxia. Estuaries and Coasts, doi: 10.1007/s12237-014-9863-9.

  • E.H. Shadwick, S.R. Rintoul, B. Tilbrook, G.D. Williams, N. Young, A.D. Fraser, J. Smith, H. Marchant, and T. Tamura (2013) Glacier tongue calving reduced dense water formation and enhanced carbon uptake. Geophys. Res. Lett. 40: 1-6, doi:10.1002/grl.50178

  • E.H. Shadwick, T.W. Trull, H. Thomas, and J.A.E. Gibson (2013) Vulnerability of Polar oceans to anthropogenic acidification: An Arctic-Antarctic comparison. Nat. Sci. Rep. 3:2339, doi: 10.1038/srep02339

  • A. Fransson, M. Chierici, L.A. Miller, G. Carnat, E. Shadwick, H. Thomas, S. Pineault and T.N. Papakyriakou (2013). Impact of sea ice processes on the carbonate ssytem and ocean acidification state at the ice-water interface of the Amundsen Gulf, Arctic Ocean. J. Geophys. Res., 118: 1-23, doi:10.1002/2013JC009164

  • N. R. Roden, E.H. Shadwick, B. Tilbrook, and T.W. Trull. Annual cycle of carbonate chemistry and decadal acidification change in coastal Prydz Bay, East Antarctica (2013) Mar. Chem. 155: 135-147, doi: 10.1016/j.marchem.2013.06.006

  • S. Pineault, J.-É. Tremblay, M. Gosselin, H. Thomas, and E.H. Shadwick (2013) The isotopic signature of particulate organic C and N in bottom ice: controlling factors and applications for tracing the fate of ice-algae in the Arctic Ocean. J. Geophys. Res., 118: 287-300, doi:10.1029/2012JC008331

  • S. Signorini, A. Mannino, R. Najjar, M. Friedrichs, W.-J. Cai, J.E. Salisbury, Z.A. Wang, H. Thomas and E.H. Shadwick. Surface Ocean pCO2 Seasonality and Sea-Air CO2 Flux Estimates for the North American East Coast. (2013) J. Geophys. Res., 118, doi: 10.1029/jgrc.20369.

  • B. Else, T.N. Papakyriakou, R.J. Galley, A. Mucci, M. Gosselin, L.A. Miller, E.H. Shadwick, and H. Thomas (2012) Annual Cycles of pCO2sw in the Southeastern Beaufort Sea: New Understandings of Air-Sea CO2 Exchange in Arctic Polynyas. J. Geophys. Res., 117: C00G13, doi:10.1029/2011JC007346

  • N.-X. Geilfus, G. Carnat, T. Papakyriakou, J.-L. Tison, B. Else, H. Thomas, E.H. Shadwick, and B. Delille (2012) pCO2 dynamics and related air-ice CO2 fluxes in the Arctic coastal zone (Amundsen Gulf, Beaufort Sea). J. of Geophys. Res., 117: C00G10, doi:10.1029/2011JC007118.

  • H. Thomas, S. Craig, B. J. W. Greenan, W. Burt, G. J. Herndl, S. Higginson, L. Salt, E.H. Shadwick, and J. Urrego-Blanco (2012) Direct observations of diel biological CO2 fixation in the oceans. Biogeosciences 9: 2301-2309, doi:10.5194/bg-9-2301-2012

  • E.H. Shadwick, H. Thomas, K. Azetsu-Scott, B.J.W. Greenan, E. Head and E. Horne (2011) Seasonal variability of dissolved inorganic carbon and surface water pCO2 in the Scotian Shelf region of the northwestern Atlantic. Mar. Chem. 124: 23-37, doi:10.1016/j.marchem.2010.11.004

  • E.H. Shadwick, H. Thomas, M. Chierici, B. Else, A. Fransson, C. Michel, L. A. Miller, A. Mucci, T. Papakyriakou and J.-É. Tremblay (2011)  Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea. Limnol. Oceanogr. 56(1): 303:322, doi:10.4319/lo.2011.56.1.0303

  • E.H. Shadwick, H. Thomas, D. Leong, S. A. Moore, T. Papakyriakou, and A. E. F. Prowe (2011) The export of Pacific carbon through the Arctic Archipelago to the North Atlantic. Continental Shelf Res. 31: 806-816, doi:10.1016/j.csr.2011.01.014

  • M. Chierici, A. Fransson, B. Lansard, L.A. Miller, A. Mucci, E.H. Shadwick, H. Thomas, J.-É. Tremblay, and T. N. Papakyriakou (2011) Magnitude and strength of biogeochemical processes and temperature on the calcium carbonate saturation in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean. J. Geophys. Res., 116: C00G08, doi:10.1029/2011JC007184

  • A. Forest, J.-É. Tremblay, Y. Gratton, J. Martin, J. Gagnon, G. Darnis, M. Sampei, L. Fortier, M.Ardyna, M. Gosselin, H. Hattori, D. Nguyen, R. Maranger, D. Vaqué, C. Marrasé, C. Pedrós-Alió, A. Sallon, C. Michel, C. Kellogg, J. Deming, E. Shadwick, H. Thomas, H. Link, P. Archambault, and D. Piepenburg (2011). Biogenic carbon flows through the planktonic food web of the Amundsen Gulf (Arctic Ocean): A synthesis of field measurements and inverse modeling analyses. Progress in Oceanogr., doi: 10.1016/j.pocean.2011.05.002.

  • H. Thomas, E.H. Shadwick, F. Dehairs, B. Lansard, J. Navez, Y. Gratton, F. Prowe, A. Mucci, M. Chierici, A. Fransson, T.N. Papakyriakou, E. Sternberg, and L.A. Miller (2011) Barium and Carbon fluxes in the Canadian Arctic Archipelago. J. Geophys. Res., 116: C00G08, doi:10.1029/2011JC007120

  • E.H. Shadwick, H. Thomas, A. Comeau, S.E. Craig, C.W. Hunt, and J.E. Salisbury (2010) Air-sea CO2 fluxes on the Scotian Shelf: Seasonal to multi-annual variability. Biogeosciences 7: 3851-3867, doi:10.5194/bg-7-3851-2010

  • H. Thomas, L.-S. Schiettecatte, K. Suykens, Y.J.M. Koné, E.H. Shadwick, A.E.F. Prowe, Y. Bozec, H.J.W. de Baar and A.V. Borges (2009) Enhanced ocean carbon storage from anaerobic alkalinity generation in coastal sediments. Biogeosciences, 6: 267-274,

Edited Book Chapters
  • T. Papakyriakou, G. Carnat, M. Chierici, B. Delille, B. Else, A. Fransson, N.-X. Geilfus, B. Lansard, L. Miller, A. Mucci, E. Shadwick, H. Thomas and J.-L. Tison (2012) Air-Sea CO2 Exchange and the carbon source/sink balance in the southeast Beaufort Sea. In: D. Barber, D., Tjaden, T., Leitch, D., Barber, L., Chan, W. (Eds.). On the edge: From knowledge to action during the Fourth International Polar Year Circumpolar Flaw Lead (CFL) system study (2007-2008). University of Manitoba Press, Winnipeg, Canada.
  • J.-É. Tremblay, C. Michel, R. Maranger, H. Thomas, J. Deming, K. Cochrane, A. Forest, A., D. Nguyen, and E. Shadwick (2012) Biogenic fluxes of carbon and nutrients in the marine ecosystem of the southeast Beaufort Sea. In: D. Barber, D., Tjaden, T., Leitch, D., Barber, L., Chan, W. (Eds.). On the edge: From knowledge to action during the Fourth International Polar Year Circumpolar Flaw Lead (CFL) system study (2007-2008). University of Manitoba Press, Winnipeg, Canada.
  • E.H. Shadwick and H. Thomas (2011) Carbon dioxide in the coastal ocean: A case study in the Scotian Shelf region, In: The Ocean Year Book Volume 25, Martinus Nijhoff, Boston: 171-204.
  • H. Thomas, D. Unger, J. Zhang, K.-K. Liu, and E.H. Shadwick (2009)  Biogeochemical cycling in semi-enclosed marine systems and continental margins, In: Watersheds, Bays, and Bounded Seas, Island Press, Washington:169-190.