2021 – a very successful year for the Nansen Legacy master students

A major goal in the Nansen Legacy project is to educate a new generation of Arctic scientists. In 2021, five Nansen Legacy master students finished their degrees. Congratulation to all of them for a very successful work in the fields of oceanography, marine biology, and geology.
Allegra Liltved

Allegra Alexandra Liltved successfully defended her master at UiB (supervisors: Ulysses S. Ninnemann, UiB, Nil Irvali, UiB, Eystein Jansen, UiB).  

Liltved studied stable isotope records of pelagic and benthic foraminifera in a sediment core from the Kvitøya Trough. Her focus was here to determine the properties of Atlantic Water North of Svalbard during the Younger Dryas. Liltved concludes that an abrupt warming event (up to 5-8 °C) of the intermediate Atlantic water layer occurred in the Kvitøya Trough ca. 12500 to 12000 years before now.

Allegra Alexandra Liltved (2021) Abrupt deglacial changes in the properties of the Atlantic Water entering the Arctic. Master thesis, University of Bergen.

Malin Lunde successfully defended her master at UiB (supervisors Ulysses S. Ninnemann, UiB, Pål Mørkved, UiB, Allyson Tessin, Kent State University).

Malin Lunde

She studied carbon isotopes (δ13CDIC), oxygen, pH and nitrate in the pore water in 11 sediment cores collected mostly on or close to the continental slope in the Nordic Seas. Lunde found that the studied sites were characterized by a higher carbon turnover rate than many other oceanic areas. This suggests that these regions may play a unique role in the global carbon cycle.

Malin Lunde (2021) The role of Arctic shelves in the global carbon cycling assessed using stable isotope geochemistry of Arctic and sub-Arctic pore waters. Master thesis, University of Bergen

Martin Skaugset

Martin Skaugset finished his Master at NTNU (supervisors Martin Ludvigsen, NTNU, Trygve O. Fossum, NTNU).

Skaugset examined how a single autonomous underwater vehicle can make deliberate choices and plan an adaptive path of when and where to collect data. One of the central results in the thesis is that data collection using adaptive path planning gain better results than manually planned data collection missions do.

Martin Skaugset (2021) Using Monte Carlo simulations to evaluate adaptive sampling strategies in synthetic and real ocean models. Master thesis, Norwegian University of Science and Technology

Simon Hasselø Kline graduated from UiO (supervisors: Luka Supraha, UiO & NIVA, Bente Edvardsen, UiO, Tom Andersen, UiO).

Simon Kline

Kline studied 6 strains of Arctic Sea ice and pelagic diatoms (mostly collected during Nansen Legacy cruises). He found that not all these species were equally well identified with the 28S rRNA gene and that a combination of genetic sequencing and morphological analyses is most beneficial. Further, Kline showed through growth experiments that the two phytoplankton strains were more flexible in adjusting to changes in salinity, temperature and light than the sea ice species.

Simon Hasselø Kline (2021) A tale of six diatoms: an insight into the taxonomy of Arctic diatoms from different sea-ice communities and their physiological response to climate change. Master thesis, University of Oslo

Simon Pierre Lefèvere graduated from UiB (supervisors Ulysses S. Ninnemann, UiB, Nil Irvali, UiB, Matthias Forwick, UiT, Helga Kleiven, UiB). Lefèvere analyzed a sediment core to study the variability of the Atlantic Water inflow North of Svalbard during the last glaciation. He documented an inverse relationship between flow speed and temperature of Atlantic Water suggesting an important role for sea ice in modulating Atlantic Meridional Overturning Circulation during abrupt climate changes.

Simon Pierre Lefèvere (2021) Natural variability of the Atlantic Water inflow to the Arctic during the last deglaciation – Based on sediment grain size and foraminiferal stable isotope geochemistry. Master thesis, University of Bergen