Sea Ice Biogeochemist
Dr Delphine Lannuzel
Dr Lannuzel’s research interests lie in the study of trace metal distributions, speciation and biogeochemistry in polar regions. During her PhD Dr Lannuzel developed a method for sampling and measuring iron in the sea ice environment since such technologies did not presently exist worldwide. She then implemented this technology in Australia and became a key member of the productive trace metal biogeochemistry team assembled at the ACE CRC. The iron and other trace elements profiles generated during her research represented the first data for the Antarctic pack ice zone. Her pioneering work highlighted the accumulation of trace element iron in the sea ice medium and therefore the paramount importance of Antarctic sea ice to iron biogeochemical cycling in polar ecosystems.
CURRENT RESEARCH
Dr Lannuzel currently leads an international (AUS-US-Belgium-Japan) multi-disciplinary project to assess the physical and biological drivers of both the iron and carbon cycles in the seasonal ice zone (AAS #4291 – “Impact of the predicted changes in sea ice extent on primary productivity in the Southern Ocean: links between the iron and carbon cycles in fast ice and the marginal ice zone’). This project is motivated by the fact that despite its potential to naturally fertilize the Southern Ocean with iron, the sea ice zone is understudied compared to open ocean regions with respect to its contribution to the biological carbon pump. Combining a fast ice process study and laboratory experiments on archived samples, this project will generate an improved understanding of the biogeochemistry required to constrain predictions of the changing sea ice habitat in the East Australian sector.
Dr Lannuzel is part of the ACE CRC’s Carbon Uptake and Chemical Change project.
AWARDS & GRANTS
Australian Research Council (ARC) Discovery Early Career Researcher Award (DECRA), 2012
University of Tasmania Vice Chancellor Award for Research Excellence, 2011
Japan Society for the Promotion of Science (JSPS) Award, 2011
Australian Research Council (ARC) Australian Post Doctoral Fellowship, 2009
Scientific Committee on Antarctic Research (SCAR) international fellowship, 2007
SELECTED PUBLICATIONS
Lannuzel, D and Grotti, M and Abelmoschi, M and Van Der Merwe, P, “Organic ligands control the concentrations of dissolved iron in Antarctic sea ice”, Marine Chemistry, 174 pp. 120-130. ISSN 0304-4203 (2015)
Lannuzel, D, Chever, F, van der Merwe, PC, Janssens, J, Roukaerts, A, Cavagna, A-J, Townsend, AT , Bowie, AR, Meiners, KM, “Iron biogeochemistry in Antarctic pack ice during SIPEX-2”, Deep-Sea Research II pp. 1-12. ISSN 0967-0645 (In Press)
Lannuzel, D ,van der Merwe, PC , Townsend, AT , Bowie, AR, “Size fractionation of iron, manganese and aluminium in Antarctic fast ice reveals a lithogenic origin and low iron solubility”, Marine Chemistry, 161 pp. 47-56. ISSN 0304-4203 (2014).
Lannuzel, D , Schoemann, V, Dumont, I, Content, M , de Jong, J , Tison, JL , Delille, B and Becquevort, S, “Effect of melting Antarctic sea ice on the fate of microbial communities studied in microcosms”, Polar Biology, 36 (10) pp. 1438-1497. ISSN 0722-4060 (2013)
Lannuzel, D, Bowie, AR, Van Der Merwe, P, Townsend, AT , Schoemann, V, “Distribution of dissolved and particulate metals in Antarctic sea ice”, Marine Chemistry: An International Journal for Studies of All Chemical Aspects of The Marine Environment, 124 (1-4) pp. 134-146. ISSN 0304-4203 (2011)
Van Der Merwe, P ,Lannuzel, D, Bowie, AR , Mancuso Nichols, CA and Meiners, K, “Iron fractionation in pack and fast ice in East Antarctica: Temporal decoupling between the release of dissolved and particulate iron during spring melt”, Deep-Sea Research. Part II: Topical Studies in Oceanography, 58 (9-10) pp. 1222-1236. ISSN 0967-0645 (2011)
Lannuzel, D, Schoemann, V, de Jong, J , Pasquer, B, van der Merwe, P, Masson, F, Tison, JL and Bowie, AR, “Distribution of dissolved iron in Antarctic sea ice: Spatial, seasonal, and inter-annual variability”, Journal of Geophysical Research, 115 (3) EJ ISSN 0148-0227 (2010)
van Der Merwe, P, Lannuzel, D , Mancuso Nichols, CA, Meiners, K, Heil, P, Norman, Lm Thomas, DN and Bowie, AR, “Biogeochemical observations during the winter-spring transition in East Antarctic sea ice: Evidence of iron and exopolysaccharide controls”, Marine Chemistry: An International Journal for Studies of All Chemical Aspects of The Marine Environment, 115 (3-4) pp. 163-175. ISSN 0304-4203 (2009)
Lannuzel, D, Schoemann, V, de Jong, J, Chou, L , Delille, B, Becquevort, S, Tison, JL, “Iron study during a time series in the western Weddell pack ice”, Marine Chemistry, 108 (1-2) pp. 85-95. ISSN 0304-4203 (2008)
Authorised by the CEO of the Antarctic Climate and Ecosystems Cooperative Research Centre October 2019.
The ACE CRC was established and supported under the Australian Government’s Cooperative Research Centres Program.
core participants
